• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention relates to the pressure transfer device, system comprising the pressure transfer device, a fleet comprising the system and use of a pressure transfer device to pump fluid at pressures above 500 bar, the pressure transfer device pressure (1 ', 1' ') comprising a pressure chamber housing (1', 1 '') and at least one connection port (3 ', 3' '), with at least one connection port (3 ', 3' ') can be connected to a double acting liquid pressure increasing partition (2) via fluid media (26', 27 '; 26' ', 27' '), the chamber compartment pressure system comprises: - a pressure cavity (4 ', 4' ') inside the pressure chamber compartment and at least one first port (5', 5 '') for fluid inlet and / or outlet to the pressure cavity pressure (4 ', 4' '), - a bellows (6', 6 '') defining an internal volume (7 ', 7' ') within the pressure cavity (4', 4 '') and in which the internal volume (7 ', 7' ') is in fluid communication with the connection port (3 ', 3' '), where the pressure cavity (4', 4 '') has a central axis (C ', C' ') with an axial length (L ) defined by the distance between the connection port (3 ', 3' ') and the first port (5', 5 '') and an area of variable cross section over at least a part of the axial length (L), and in that the bellows (6 ', 6' ') is configured to move in a direction substantially parallel to the central axis (C', C '') over a part of the axial length (L) of the pressure cavity (4 ', 4 '').
    公开号:BR112020000126A2
    申请号:R112020000126-0
    申请日:2018-06-27
    公开日:2020-07-07
    发明作者:Torbjørn Mollatt
    申请人:Rsm Imagineering As；
    IPC主号:
    专利说明:

    [001] [001] The invention relates to a pressure transfer device and system and associated use, for pumping high volumes of fluids with particles (mud / sludge) at high pressures, such as pressures above 500 bar and up to 1500 bar or even more. The pressure transfer device preferably forms part of a larger pumping system, comprising, in addition to the pressure transfer device, one or more of a double acting pressure increase liquid partition device and a flow regulation set ( as a valve manifold).
    [002] [002] The pressure transfer device is suitable for use with high pressures, varying above 500 bar, and is especially suitable for hydraulic fracturing of oil / gas wells, where it is difficult to pump fluids with particles as propellants form part of the fluid . However, the pumping system can also be used in other well applications, such as drilling operations to pump drilling fluids and in cementing operations, blocking and abandoning operations, completion or stimulation operations, acidification or nitrogen circulation .
    [003] [003] Hydraulic fracturing (also fracturing, coating, billing or hydrofracting) is a well stimulation technique in which the rock is fractured by a pressurized fluid, in the form of gel, foam, sand or water. Chemicals can be added to water to increase fluid flow or improve specific properties of water,
    [004] [004] In general, piston / piston pump units are used.
    [005] [005] When several pumps are connected to the same flow line to the well and are online simultaneously, there is a risk of forming interference patterns that correspond to the reference frequency of the flow line to the well. This leads to moving flow lines, which can cause damage to equipment and personnel (called a "snake", because the flow line moves like a snake).
    [006] [006] In fracturing operations, when the pumps are turned off and hydraulic pressure is no longer applied to the well, small grains of hydraulic fracturing propellants keep the fractures open. Propellants are typically made of a solid material, such as sand. The sand can be treated with sand or synthetic or natural materials, such as ceramic. In land fracturing, usually a fleet called fracking comprising a number of trailers or trucks is transported and positioned on site. Each truck is provided with a pumping unit to pump fracturing fluid into the well. Therefore, there are weight and physical limitations on the equipment to be used, limited by the total weight capacities of the truck on the road and the physical limitations given by the trucks.
    [007] [007] The prior art, not suitable for fracturing, but disclosing a system in which the clean hydraulic fluid is separated from the liquid to be pumped, includes document EP 2913525, relating to a hydraulically driven diaphragm pumping machine ("pump" ), in particular for water and difficult-to-pump materials. The system comprises at least two pumping units side by side. Each pumping unit comprises a pump cylinder and a hydraulic cylinder. The pump cylinder (reference signs related to EP 2913525, 1,2) has a first lower end with a first inlet and outlet for the liquid to be pumped and a second upper end
    [008] [008] However, the EP 2913525 solution is not applicable to hydraulic fractures at high pressures (i.e., more than 500 bar) due to the cylindrical pump chamber. The cylinder shape of the pump chamber will not be able to withstand the high pressures experienced in combination with a high number of cycles when used in hydraulic fracturing. In addition, the bellows are made of polymer, resulting in the risk of particles being squeezed between the cylindrical wall and the bellows, with the possibility of damage to the bellows. In addition, a hydraulic cylinder is connected to each pump cylinder. The hydraulic cylinder is not configured to increase the pressure entering the bottom side of the piston (19, 20) because the effective area is smaller in the
    [009] [009] Hydromechanical connections in general have some disadvantages, including: - cannot synchronize with several units, - cannot vary the ramp up / down, depending on pressure and flow (cannot offer precise control of pump characteristics ), - it cannot partially spill, - it cannot compensate pressure / flow fluctuations in the flow, - it would never be able to overlap and make a laminar flow, - it generates a pressure drop on the control valve, which leads to the heating of the oil and efficiency loss in the range of 5 to 10%.
    [010] [010] There is a problem with conventional pumps used for fracturing, that parts of the system can break after a few hours and need to be repaired. Thus, to provide redundancy in the system, fleets comprising a plurality of backup pumps are normal. This generates costs in both maintenance and working hours, as a technician can only operate a few trucks.
    [011] [011] Thus, an objective of the present invention is to solve at least some disadvantages in relation to the prior art and more specific solutions for keeping the moving parts (pistons, seals) away from the particulate fluid (i.e., pumped medium) and avoiding particles to damage the moving parts.
    [012] [012] More specifically, it is an objective of the present invention to provide smooth, shock-free pumping of large flows at high pressures, reducing the wear of all components in the flow circuit and, at the same time, providing a unit capable of integrating and adapts perfectly to any pressure flow rate demand without the need for mechanical reconstruction or alterations. In addition, the ability of the present invention to synchronize with multiple units minimizes the risk of possible snakes.
    [013] [013] More specifically, one of the objectives of the invention is to provide a fracturing system that can operate at high pressures with a high volume flow.
    [014] [014] Another objective is to provide a system in which the liquid to be pumped is separated into the largest possible number of moving parts.
    [015] [015] More specifically, an objective is to minimize the risk of damaging the bellows.
    [016] [016] Another objective is to provide a pumping system that has reduced weight, and the pumping system must be able to be arranged and transported in ordinary trucks or trailers that are part of the so-called frack-frets used in hydraulic fracturing.
    [017] [017] Another objective is to provide a system that does not require an external guide system for the bellows.
    [018] [018] Another objective is to provide a fully continuous speed / stroke control below to avoid pressure spikes, flow spikes and fluctuations.
    [019] [019] Another objective is to create a pump system for all pressure and flow configurations, normally used in fracturing or high pressure pumping industries, without the need for mechanical reconstruction.
    [020] [020] Another objective of the invention is to prevent sedimentation at the bottom of the pressure cavity of the pressure transfer device.
    [021] [021] Another objective of the invention is to provide an advanced control system and synchronization of several units, to eliminate the problems with conventional systems.
    [022] [022] Another objective is to provide a solution that can be used in new installations and be connected to existing installations, such as the modernization of existing systems.
    [023] [023] The invention is presented and characterized in the independent claims, while the dependent claims describe other features of the invention.
    [024] [024] The present invention provides significant improvements over known solutions. The pumping system and its associated components provide the possibility to pump at pressures up to 1500 bar and above with a high volume flow. For example, the project provides for the possibility of pumping 1 m3 at 1000 bar of pressure per minute or 2 m3 at 500 bar per minute and any rate between rate and pressure. The pressure transfer device according to the present invention provides flexibility with respect to the desired pump rates and pressures, for example, reduced flow rates at high pressures and high flow rates at reduced pressures, in all modes with a flow substantially laminar. The pressure transfer device preferably forms part of a larger pumping system comprising, in addition to the pressure transfer device, one or more of a double acting pressure increase liquid partition device and a flow regulation assembly (such as a valve manifold.) typically pressurizes the double-acting pressure-increasing liquid partition device, where
    [025] [025] Thus, the pumping system can be a positive displacement pump in which the volume variations in the pressure cavity are achieved using a bellows, such as a fluid-tight bellows, which is radially rigid and axially flexible. This configuration results in a bellows that moves substantially in the axial direction, while movements in the radial direction are prohibited or limited.
    [026] [026] In all aspects of the invention, the bellows should be understood as a watertight barrier that separates the internal volume of the bellows and the volume between the outside of the bellows and the inside of the pressure cavity. That is, the bellows have a fixed outside diameter, but it is axially flexible, providing an annular space (size of the space, for example, at least corresponding to the diameter of the particles in the fracturing fluid) between the inner surface of the pressure chamber housing and the bellows in all positions of the bellows and at all pressures.
    [027] [027] The bellows is preferably fixedly connected to the top of the pressure cavity, and the bellows are surrounded by the pressure cavity in all directions, that is, below, radially and possibly partially on the upper side of the parts that are not part of the connection port for hydraulic fluid entering and leaving the internal volume of the bellows. The total volume of the pressure cavity is constant, while the internal volume of the bellows is
    [028] [028] The pumping system can be a positive displacement pump where volume changes in the pressure transfer device are achieved using a fluid-tight bellows that is radially rigid and axially flexible. When the bellows is in a first position, that is, a compressed state, the volume remaining in the pressure cavity is greater, while when the bellows is in a second position, that is, an extended state, the volume remaining in the pressure cavity is greater. pressure is less. The proportion of the dimensions of the internal surface of the pressure cavity and the external surface of the bellows is designed to form a space between the internal surface of the pressure cavity and the external surface of the bellows in all positions of the bellows, thus preventing particles get stuck between the inner surface of the pressure cavity and the bellows. Thus, the fracturing fluids surround the bellows and the gap is formed so that its minimum extension is greater than the largest particle size of the propellants. The radial rigidity of the bellows ensures that they do not come into contact with the internal surface of the pressure chamber housing. The hydraulic fluid that enters the internal volume of the bellows through the connection port pressurizes the barrier and, due to the rigid properties of the bellows and / or the possible internal orientation, all movement of the bellows is in the axial direction. The liquid to be pumped, e.g. fracturing fluid, is pressurized by filling the internal volume of the bellows with hydraulic fluid, thereby increasing the displaced volume of the bellows, which results in a reduction of the remaining volume in the pressure cavity outside the bellows and an increase in the pressure of the liquid to be pumped . The liquid to be pumped is coming out for the first
    [029] [029] The pressure transfer device has no sliding surfaces in contact with the liquid to be pumped. Thus, the service life of the parts is extended, as there are no vulnerable parts in the sliding contact with any abrasive liquid to be pumped. The pressure transfer device is compensated in such a way that the hydraulic actuation pressure is equal to the pressure in the liquid to be pumped, that is, the fracturing fluid and, as such, the bellows do not need to withstand the differential pressure between the hydraulic system. internal actuation pressure and pressure in the liquid to be pumped.
    [030] [030] The pressure transfer device can be operated by pressure fed from a double acting pressure increasing liquid partition device, double acting pressure increasing liquid partition device which is pressurized by a pump unit hydraulic. The double-acting pressure increase liquid partition device is part of a closed hydraulic circuit volume with the internal volume of the bellows and is capable of feeding and retracting a large amount of hydraulic fluids under high pressure to the internal volume of the bellows.
    [031] [031] It is clear that all hydraulic systems have a degree of internal leakage of hydraulic fluid, however, throughout the description and states that the term closed circuit hydraulic system was used for a "closed" system to distinguish from systems that they are not defined by a hydraulic system. set volume.
    [032] [032] The bellows can be returned to the first position, that is, the compressed state, by assisting the supply pressure in the liquid to be pumped. The liquid to be pumped, that is, the supply pressure of the pumping liquid of the feed pump to be pumped, provides
    [033] [033] The invention relates to a pressure transfer device for pumping fluid with particles at pressures above 500 bar, the pressure transfer device comprising a pressure chamber compartment and at least one connection port, at least one connection port can be connected to a double acting pressure increasing liquid partition device via fluid communication means, the pressure chamber compartment comprises: - a pressure cavity within the pressure chamber compartment and at least one first fluid inlet and / or outlet port to the pressure cavity,
    [034] [034] The pressure transfer device can be a pressure transfer fracturing device, such as devices used in hydraulic fracturing operations.
    [035] [035] Thus, the pressure cavity has a different cross section, e.g. at least two different cross sections, in their longitudinal direction. Preferably, the transition areas between different cross sections are smooth or continuous (without sharp edges). Such smooth or continuous transition areas prevent sedimentation and allow higher pressures without weak points in the pressure cavity. That is, the forces applied to the pressure cavity are the result of internal pressure. The geometry is optimized to make these forces as uniform as possible.
    [036] [036] The connection port is thus adapted for suction of hydraulic fluid and / or expulsion of pressurized hydraulic fluid into and out of the pressure cavity.
    [037] [037] The first port is adapted for the entry / exit of liquid to be pumped and discharged out of the pressure cavity.
    [038] [038] According to one aspect, the bellows can be connected to an internal surface of the pressure cavity. Preferably, the bellows is connected at the top of the pressure cavity with means that provide a fluid-tight connection between the bellows and the internal surface of the pressure cavity. As such, fluids are prevented from flowing from an internal volume of the bellows and into the pressure cavity.
    [039] [039] The bellows have a shape adapted to the shape of the pressure cavity, so that the bellows, in all their operational positions, are prevented from coming into contact with an internal surface of the pressure chamber housing. This means that the bellows, in all their operational positions, have a maximum extension in the axial and radial direction less than the restrictions defined by the internal surface of the pressure chamber housing.
    [040] [040] In one aspect, the pressure cavity tapers towards the first port, thus creating a natural funnel where sediment / propellants / sand can escape along with the fluid. Consequently, the first orifice of the pressure chamber housing is preferably shaped to prevent the accumulation of sedimentation (propellants / sand etc.) by tilting the pressure cavity towards the first orifice. The first orifice can thus preferably be arranged in a lower section of the pressure cavity, so that sediment can escape through the first orifice by means of gravity.
    [041] [041] In one aspect, the pressure cavity can be elongated, egg-shaped, elliptical, circular, spherical, ball-shaped or oval, or has two parallel sides and at least a portion of a smaller cross-section than cross section in the parallel portion.
    [042] [042] In another aspect, the pressure cavity can be circular. In yet another aspect, the pressure cavity can be multi-bubbled (for example, like the “Michelin man”).
    [043] [043] In one aspect, the bellows has a radial and axial extension less than an internal surface of the pressure chamber compartment (that is, defining the radial and axial extension of the pressure cavity), forming a space between the outer circumference of the bellows and an inner circumference, that is, the inner surface, of the pressure chamber housing in all the operational positions of the bellows. Thus, at all pressures, the fluid is surrounding at least two sides of the bellows during the operation of the pressure transfer device.
    [044] [044] According to one aspect, the bellows can have a cylindrical shape, similar to an accordion or accordion shape. The construction of the bellows cylinder provides minimal bellows loads, since its entire surface is constantly in a hydraulically balanced state. The bellows can thus comprise an accordion-type side wall, providing axial flexibility and a fluid-tight end cap connected to the bellows side wall. The side wall of the accordion type can thus comprise a plurality of folds or circular convolutions provided in a neighboring relationship. Neighboring folds or convolutions can, for example, be welded together or connected together using other suitable fastening means, such as glue, mechanical connections. Neighboring folds or convolutions can be formed so that particles in the fracturing fluid are prohibited from being trapped between neighboring folds or convolutions in the bellows during the retraction and extraction of the bellows. This can be achieved through the operational range of the bellows, that is, the predefined maximum bellows extension and retraction, so that the openings between the neighboring folds or between the folds and the internal surface of the pressure cavity are always larger
    [045] [045] The bellows is preferably made of a sufficiently rigid material: metal, composite, rigid plastic, ceramic or combinations thereof, etc., providing a fluid-tight bellows, which is radially rigid and axially flexible. The bellows preferably move substantially in the axial direction, while movements in the radial direction are prohibited or limited. The bellows material is chosen to withstand wide variations in pressure and chemicals in the fluid to be pumped, thus minimizing fatigue and the risk of damage. If the bellows is made of metal, it can be used at higher temperatures than bellows that are made of materials that are more sensitive to temperature (that is, materials that cannot operate at higher temperatures).
    [046] [046] Of course, other parts that are part of the general system can also be made of appropriate materials, depending on the demands of specific projects, such as metal (iron, steel, special steel or examples above). However, other materials can also be used, such as composites, rigid plastic, ceramics or, alternatively, combinations of metal, composite, rigid plastic and ceramics.
    [047] [047] In one aspect, the bellows may comprise a guide system coinciding with, or being parallel to a central axis of the pressure cavity, and in which the bellows expands and retracts axially in a longitudinal direction along the central axis.
    [048] [048] In one aspect, the guidance system may comprise a guide.
    [049] [049] The pressure transfer device may also comprise a monitoring position for the bellows position sensor and or a temperature sensor that monitors the temperature of a
    [050] [050] The bellows may comprise a guide system comprising a guide. The guide can be connected to a lower part of the bellows and can be configured to be guided in the pressure chamber housing. The guide in the pressure chamber compartment can be part of the hydraulic fluid inlet and outlet into and out of the internal bellows volume. The guide may be coinciding with or parallel to a central axis of the pressure cavity and the bellows may expand and retract axially in a longitudinal direction along the central axis.
    [051] [051] The bellows position sensor can be a linear position sensor. The bellows position sensor can be arranged on the connection port and comprise axial through-holes for unrestricted fluid flow.
    [052] [052] In one aspect, when the bellows position sensor is a linear sensor, a reading device can be fixedly connected to the bellows position sensor and a magnet can be fixedly connected to the guide, and where the reading device can be an inductive sensor that can read the position of the magnet so that the bellows position sensor can inductively monitor a relative position of the magnet and thus the bellows.
    [053] [053] In one aspect, the inductive sensor can be an inductive rod adapted to read the position of a magnet and, therefore, the bellows.
    [054] [054] In one aspect, the inductive sensor may comprise an inductive rod adapted to read the position of a magnet connected to the guide, so that the bellows position sensor inductively monitors the relative position of the magnet and, therefore, the bellows.
    [055] [055] The pressure transfer device may further comprise an additional fluid-tight barrier within the bellows. This can be used to further reduce or minimize the risk of leakage
    [056] [056] In one aspect, the pressure transfer device may further comprise an external barrier between the bellows and an internal surface of the pressure chamber housing. This external barrier can be protective against particles (filter) or fluid-tight, and can be a flexible material, a bellows-like bellows in place, a filter etc.
    [057] [057] The invention also relates to a system comprising: - the pressure transfer device as defined above and, - a hydraulic pump unit that pressurizes and drives a double-acting pressure increase liquid partition device and the double-acting pressure increase liquid partition device that pressurizes and drives the pressure transfer device, - a flow regulation set configured to distribute the fluid between an inlet manifold, the pressure cavity and an outlet manifold.
    [058] [058] The system can be a fracturing system, like a system used in fracturing operations.
    [059] [059] The system may further comprise a control system to control the working range of a pump bellows and is configured to decide whether the bellows operates within a predetermined operating range of the bellows position defined by maximum limitations, as maximum retraction position and maximum extension position of the bellows, the control system being adapted to compare the position by calculating whether an amount of hydraulic fluid volume is outside the predetermined operating range of the position
    [060] [060] The control system thus compares the signals from the bellows position sensor and the double acting pressure boosting liquid partition device on the double acting pressure boosting liquid partition device to decide whether the system operates within the predefined working ranges.
    [061] [061] In addition, the control system may, based on the input of the potential temperature sensor (s), be able to decide when to use the oil management system valve to change (refill, drain) the oil in the closed hydraulic circuit system.
    [062] [062] The predetermined operating range of the bellows position can be defined by specific physical end positions for the bellows, both for compression and for bellows extension. Alternatively, instead of physical end positions, the end positions can be software operated positions, indicating the end positions. A signal can be transferred to the control system, indicating that the bellows has reached the final position (s). The physical or software operated positions that provide the final positions can be integral parts of the bellows, for example as part of a guide system or a bellows position sensor or separate from the bellows. The control system can then decide whether the bellows has reached its final position. If the bellows do not reach the end position, the control system can decide that an (expected) signal is not read and instruct the management system valve
    [063] [063] The control system also allows partial courses when working with large propellants and / or at startup. This is crucial in situations where the unit has had an unplanned shutdown, where the pumped liquid is still a slurry, allowing propellants to fall out of suspension and sediment. The partial stroke is then applied to resuspend the propellants in a (suspended) paste.
    [064] [064] In one aspect, the system can comprise two pressure transfer devices and the double acting pressure increase liquid partition device can be configured to sequentially pressurize the two pressure transfer devices, so that a pressure transfer device pressure transfer is pressurized and discharged (fractured fluid discharged) while the other is depressurized and charged (charged by new fracturing fluid) and vice versa. The depressurization and loading operation can be aided by the feed pump.
    [065] [065] The system can also comprise two double-acting pressure-boosting liquid partition devices configured to be operated individually, so that they can pressurize two of the pressure transfer devices simultaneously, that is, synchronously or asynchronously, that is, overlapping.
    [066] [066] In another aspect, the system may comprise four pressure transfer devices and two double acting pressure increasing liquid partition devices, each of the double acting pressure increasing liquid partition devices being configured to pressurize and sequentially discharge two pressure transfer devices, so that two pressure transfer devices are
    [067] [067] It is also possible to provide a trailer, container or skid, comprising the pressure transfer device as defined above and / or the system defined above used in hydraulic fracturing together with an engine and the necessary trim.
    [068] [068] The system may also comprise a bellows position sensor adapted to monitor an axial extension of the bellows and, therefore, a quantity of fluid entering and leaving the internal volume of the bellows, as well as a positioning device positioning sensor. double-acting pressure booster liquid monitor that monitors the position of the double-acting pressure booster liquid partition device, where signals from the double-action bellows position sensor and the liquid-partition device position sensor Dual-action monitoring is monitored by the control system and compared with predefined working ranges for bellows extension and position of the double-acting pressure reinforcing liquid partition device. This is done because it is advantageous to know and be able to control the position of the axial extension of the bellows (the bellows should never be fully compacted or stretched to the maximum). Thus, the entrance to the control system is important. For example, if there is a leakage of hydraulic fluid from the closed system of the hydraulic circuit, there is a risk that the bellows will be damaged if they contract / compress too much (ie outside the predefined operating range). Too much contraction can lead to planks or sand being trapped between neighboring folds or convolutions in the bellows and / or increased delta pressure, while too much extension can lead to, for example, increased bellows fatigue or potential collision with the lower housing surface pressure chamber, reducing the expected life of the bellows.
    [069] [069] The volume flowing in and out of the internal bellows volume is monitored using the bellows position sensor, providing high accuracy and controlled bellows acceleration / deceleration at the turning point of the augmenting liquid partition device double acting pressure, which again results in calm and soft valve seats, that is, the 'reduced' movement of the valves in the flow regulation system. The slow and controlled movement of the valves avoids or minimizes the risk of damaging the valve seats in the flow regulation system. Thus, to achieve this, the system is able to monitor the position of the double-acting pressure-increasing liquid partition device using the position sensor of the double-acting pressure-increasing liquid partition device and, when approaching the position Finally, the discharge speed of the unit is reduced to dampen the speed of the valve element before entering the valve seat.
    [070] [070] The double-acting pressure-boosting liquid partition device that provides control of the volume to be discharged into and out of the bellows, and also functions as a pressure boosting or amplifying device, is preferably a hydraulic pump of double acting cylinder / piston, where the hydraulic pump the pressure of the pump entering the pump is pressing an area with a fixed proportion greater than the secondary area. The secondary area is the area that works with the fluid entering and leaving the internal volume of the bellows. This configuration provides double, triple or even quadruple (or more) working pressure in the secondary area. The hydraulic pump system that drives the double-acting pressure increase liquid partition device, having a pressure range of, for example 350 bar, for example, can supply 700-1400 bar to the internal volume of the bellows and therefore the same pressure in the pressure cavity. In order to obtain a pressure transfer device and a double action pressure booster liquid partition device to function and function
    [071] [071] The double-acting pressure-increasing liquid partition device is preferably double-acting, where a primary side, defined by a first piston area, of the operating double-acting liquid partition device operates with a difference of pressure of 350-400 bar and, on the secondary side, defined by a second piston area, can have a multiple pressure, for example, 1050 bar or more, which will be similar to the pressure under which the pressure transfer device, or that is, the bellows and the pressure cavity can operate.
    [072] [072] More specifically, the double-acting pressure-boosting liquid partition device is capable of feeding and retracting a large amount of hydraulic fluid under high pressures to and from at least one first pressure transfer device and second transfer device pressure pumps pumping fluids with particles with high volumes and pressures above 500 bar, where the double-acting pressure-boosting liquid partition device is controllable by a variable flow supply through at least one first drive fluid port and a second handling fluid port, wherein the double-acting pressure-increasing liquid partition device comprises:
    [073] [073] The pressure transfer device can be operated by the hydraulic pump unit, for example a variable pump above
    [074] [074] The pressure transfer device is preferably pressure compensated, which means that the bellows is operated hydraulically, guiding an amount of oil or other hydraulic fluid into and out of the bellows internal volume, moving the bellows between a first position, that is, compressed state and a second position, that is, extended state. In operation, there will be the same pressure in the hydraulic fluids in the internal volume of the bellows as in the fracturing fluid (that is, medium to be pumped) in the pressure cavity outside the bellows. The liquid or medium to be pumped, e.g. fracturing fluid, being disposed below the bellows and in the space formed between the outside of the bellows and the inner surface of the pressure chamber housing.
    [075] [075] The pressure transfer device or the double acting pressure increase liquid partition device do not have sliding surfaces in contact with the liquid to be pumped. Thus, the service life of the parts is extended, as there are no vulnerable parts in the sliding contact with any abrasive liquid to be pumped.
    [076] [076] The invention further relates to a fleet comprising at least two trailers, each trailer comprising at least one system as described above.
    [077] [077] The control system, which can be computer-based, also allows the possibility of several parallel pumping systems to act as one, tying them to a field bus. This can be done by arranging the pumping systems in parallel and using the control system to force or operate the individual pumping systems asynchronously. This minimizes the risk of snakes due to interference.
    [078] [078] The invention also relates to the use of a pressure transfer device as defined above, a system as defined above or a fleet as defined above in the extraction or production of hydrocarbons
    [079] [079] The invention further relates to the use of a pressure transfer device as defined above, a system as defined above or a fleet as defined above in hydraulic fracturing operations.
    [080] [080] The invention also relates to the use of a pressure transfer device as defined above, a system as defined above or a fleet as defined above in any of the following operations: plug and abandon operations, well drilling, completion or stimulation, cementation, acidification, nitrogen circulation.
    [081] [081] The system can be controlled by an electromechanical control system. The inputs for the pump control may include one or more of the following items: - pressure sensors in the low pressure hydraulic system (clean oil) and in the slurry / sludge supply line - position sensors in the liquid augmentation partition device double acting pressure sensors, including piston / plunger position and bellows
    [082] [082] The pressure transfer device (via the double acting pressure increase liquid partition device) is controlled by supplying the hydraulic pump units, e. axial piston pumps above center, variable instructions based on inputs.
    [083] [083] Briefly, the invention and the electromechanical control system that may be part of the invention, may have benefits in comparison with the prior art solutions, including: - Variable pressure, power and flow; As the conditions of a pumping task can vary, the system can adapt to specific conditions. For example. if the pressure increases, the system can automatically adjust the flow to the maximum allowable power. If there is a set pressure, the electromechanical control system can vary the flow to maintain that pressure. If there is a defined flow, the electromechanical control system can vary the pressure and energy up to the limitations of the system. It is also possible to combine the control parameters.
    [084] [084] Throughout the description and claims, different words were used for the liquid to be pumped. The term should be understood as the liquid in the pressure cavity outside the bellows, e.g. the hydraulic fracturing fluid, fracturing fluid, fracturing, hydrofracting or hydrofracking, or mud, stimulation fluid, acid, cement etc.
    [085] [085] In addition, several terms have been used for the position of the double acting pressure reinforcing liquid partition device or the position of the rod or piston in the double acting pressure reinforcing liquid partition device. It should be understood as the position of the rod or piston in relation to the outer casing of the double acting pressure reinforcing liquid partition device.
    [086] [086] These and other features of the invention will be clear from the following description of a preferred form of modality, given as a non-restrictive example, with reference to the accompanying drawings in which; Brief description of the drawings
    [087] [087] Fig. 1 shows an operational configuration of a pressure transfer device and associated system according to the present invention;
    [088] [088] Fig. 2 shows details of a double acting pressure booster liquid partition device used in connection with the pressure transfer device according to the present invention.
    [089] [089] Fig. 1 shows an overview of an operational configuration of a pressure transfer device and associated system according to the present invention. A well stimulation pressure transfer device designed specifically for very high pressure (500 bar and above) at high rates (eg 1000 liters / min or more for the specific system disclosed in Figure 1), pumping fluids is disclosed , like sludge, containing high amounts of abrasive particles. Two identical configurations are shown in Figure 1, with a common double acting pressure reinforcement liquid partition device 2, in which the configuration elements on the left side are indicated with a single apostrophe (') and the elements in the configuration identical to the right side is indicated with a double apostrophe ('').
    [090] [090] Details of the double-acting pressure increase liquid partition device 2 used in connection with the pressure transfer device 1 ', 1' 'are shown in Figure 2. A pressure transfer device 1' is shown , 1 '' to pump fluid at pressures above 500 bars, the pressure transfer device 1 ', 1' 'comprising a pressure chamber housing and a 3', 3 '' connection port, the 3 'connection port , 3 '' being connectable to a double-acting pressure increase liquid partition device 2 via fluid communication means in the form of the first orifice of the valve 26 ', 26' 'and the second orifice of the valve
    [091] [091] The pressure transfer device 1 ', 1' comprises a bellows, exemplified as a fluid tight bellows hydraulically operated 6 ', 6' 'comprising an internal guide 9', 9 '' and a position sensor of bellows 12 ', 12' 'with an inductive rod 43', 43 '' adapted to read a 10 ', 10' 'magnet. The 10 ', 10' 'magnet can be fixedly connected to the 9', 9 '' guide. The guide 9 ', 9' 'is itself guided in the pressure chamber compartment, for example, along the longitudinal extension of the connection port 3', 3 ''. In the disclosed example, the guide 9 ', 9' 'is connected to the lower end of the bellows 6', 6 '' at one end and is guided in the pressure chamber compartment at the upper end thereof. The guide 9 ', 9' 'and therefore the magnet 10', 10 '', follows the movement of the bellows 6 ', 6' '. The bellows position sensor 12 ', 12' ', for example measuring rod 43', 43 '' can comprise means for detecting and determining the position of the magnet 10 ', 10' '(and therefore the guide 9 ', 9' 'and bellows 6', 6 ''), for example by inductive detection of the position of the magnet.
    [092] [092] The bellows 6 ', 6' 'are placed in a pressure cavity 4', 4 '' with a defined clearance for the internal surface of the pressure chamber housing. The drive fluid is directed in and out of an internal volume 7 ', 7' 'of the bellows 6', 6 '' through a connection port 3 ', 3' 'at the top of the pressure cavity 4' , 4 '' (ie the upper part of the pressure chamber compartment). The bellows 6 ', 6' 'are fixedly connected at the top of the pressure cavity 4', 4 '' to the internal surface of the pressure chamber housing by means known to the skilled person. The 3 ', 3' 'connection port is in communication with a double acting 2 pressure increase liquid partition device and possibly a 16', 16 '' oil management system valve.
    [093] [093] The pressure transfer device 1 ', 1' 'may further comprise an air vent (not shown) to vent the air from the fluid to be pumped. Air ventilation can be any operable ventilation to extract or vent excess air from a closed system, such as any appropriate valves (choke) or similar.
    [094] [094] The pumped medium, for example, particulate fracturing fluid, enters and leaves the pressure cavity 4 ', 4' 'through a first port 5', 5 '' at the bottom of the pressure cavity 4 ', 4 '' (ie, pressure chamber compartment). The first port 5 ', 5' 'is in communication with a flow regulation device 13, such as a valve manifold. The flow regulation device 13 is explained in more detail below.
    [095] [095] Conducted by the double acting pressure reinforcing liquid partition device 2, the pressure cavity 4 ', 4' ', in combination with the bellows 6', 6 '', pumps the fluid by retracting and expanding the bellows 6 ', 6''between its predefined minimum and maximum limitation. Keeping the bellows within this predefined minimum and maximum limitation extends the life of the bellows. To ensure that the 6 ', 6' 'bellows function within their predefined limitation, this movement is monitored by the bellows position sensor 12', 12 ''. Dynamically moving bellows out of these predefined minimum and maximum limitations can dramatically reduce bellows life. Without this control, the bellows 6 ', 6' 'over time, as a result of internal leakage, mainly in the double-acting pressure reinforcing liquid partition device 2, will be overloaded by excess extension (eventually they will fall with the cavity pressure 4 ', 4' 'or super compress (retracts), causing particles in the fluid to deform or puncture the bellows 6', 6 '' or generate delta pressure). A central guide system 9 ', 9' ', exemplified as guide 9', 9 '', ensures that the bellows 6 ', 6' 'retract and expand in a linear manner, ensuring that the bellows 6', 6 ' 'do not hit the side walls of the pressure cavity 4', 4 '' and, at the same time, ensure accurate positioning readings of the bellows position sensor 12 ', 12' '. Thus, the pressure cavity 4 ', 4' 'is specifically designed to withstand high pressures and cyclic loads while preventing the accumulation of sedimentation. The defined distance between the outside of the bellows 6 ', 6' 'and the internal dimension of the pressure chamber housing guarantees the balance of the internal pressure of the bellows pressure 6', 6 '' and the average pressure of the pump in the pressure 4 ', 4' '.
    [096] [096] This pressure cavity is designed to transport the cyclic loads to which this system will be subjected and to house the bellows and the bellows positioning system. The connection port 3 ', 3' 'has a cylindrical shape machined and sharpened through the base material of the
    [097] [097] The first port 5 ', 5' 'from the bottom in the pressure cavity 4', 4 '' is shaped to prevent the accumulation of sedimentation by tilting or thinning the pressure cavity 4 ', 4' 'towards the first port 5 ', 5' '. Consequently, the accumulation of sedimentation is prevented because the sediments or particles of the liquid to be pumped flow naturally, that is, with the aid of gravity, leaving the pressure cavity 4 ', 4'out through the first port 5', 5 '' . Without this inclined or conical shape, the build-up of sedimentation can lead to problems during the initialization of the pressure transfer device and / or the sediment can accumulate and eventually surround the undersides of the outside of the 6 ', 6' 'bellows.
    [098] [098] The double-acting pressure increase liquid partition device 2 comprises a hollow cylinder with a longitudinal extension, wherein the cylinder comprises a first and a second part with a first cross-sectional area a1 and a third part with a second cross-sectional area a2 of different size than the first and second part. The double-acting pressure-increasing liquid partition device comprises a rod movably arranged like a piston within the cylinder. The rod has a cross-sectional area corresponding to the first cross-sectional area a1 and defines a second piston area 31 ', 31' 'and in which the rod, when disposed within the hollow cylinder, defines a first piston chamber 17' and a second piston chamber 17 '' in the first and second part. The rod further comprises a projecting portion 30 which has a cross-sectional area corresponding to the second cross-sectional area a2 and the projecting portion which defines a first area of cross-section.
    [099] [099] The first piston chamber 17 'comprises a first piston port 18' which is in communication with the internal volume 7 'of the bellows 6', alternatively through the first valve of the oil management system 16 '. Likewise, the second chamber of the piston 17 '' comprises a second port of the piston 18 '' which is in communication with the internal volume 7 '' of the bellows 6 '', alternative through the second valve of the oil management system 16 '' The volumes within the first and second piston chambers 17 ', 17' 'are varied with the stem 19 being extracted and retracted within / outside the respective first and second piston chambers 17', 17 ''. The stem 19 may comprise a position sensor of a double-acting pressure-increasing liquid partition device 21. The first and second seals 22 ', 22' can be arranged between the projecting portion 30 of the stem and the first piston 17 'and the second piston chamber 17' ', respectively. Said first and second seals 22 ', 22' 'can be ventilated and cooled by a separate or common lubrication system 23', 23 ''.
    [0100] [0100] Rod 19 is driven back and forth, allowing the pressurized fluid in sequence, such as oil or other suitable hydraulic fluid, to flow to the first inlet / outlet port 24 'and out of the second inlet / exit 24 '' and then be inverted to go in the opposite direction. The first and second inlet outlet ports 24 ', 24' 'are in communication with a hydraulic pump unit 11.
    [0101] [0101] The first and second valves of the oil management system 16 ', 16' 'are positioned between the bellows 6', 6 '' and the double acting pressure reinforcing liquid partition device 2 and are exemplified as two three-way valves that can comprise a first and second actuator 25 ', 25' 'operating the first and second three-way valves, respectively. The configurations of the first and second valves of the oil management system 16 ', 16' 'and their connection to the different pressure transfer devices 1', 1 '' are identical. Thus, in the following, the system on the left side, that is, the system in communication with the first piston port 18 ', will be described in more detail. The valve of the oil management system 16 ', in the drawings exemplified as a three-way valve, comprises three orifices, including a first orifice of the valve 26' in communication with the first orifice of the plunger 18 ', a second orifice of the valve 27 'in communication with the connection port 3' of the pressure transfer device and a third valve port 28 'in communication with an oil reservoir 29'. Likewise, with reference to the pressure transfer device 1 '' on the right side, the valve of the oil management system 16 '' in communication with the second orifice of the plunger 18 '', comprises three orifices, including the first orifice valve 26 '' in communication with second plunger port 18 '', a second valve port 27 '' in communication with connection port 3 '' of pressure transfer device 1 '' and a third valve port 28 '' in communication with an oil reservoir 29 ''.
    [0102] [0102] The hydraulic pump unit 11 may comprise central axial piston pumps which are controlled by the position data of the bellows position sensor 12 ', 12' 'and the double-acting pressure-increasing liquid partition device. position 21 in the double-acting pressure increase liquid partition device 2 and possibly according to the input data of the operator terminal (HMI) and / or the
    [0103] [0103] The flow regulation set 13, for example a valve manifold, can be a common flow regulation set for the identical systems on the left and right side of the Figure. With respect to the system on the left side, the flow regulation assembly 13 may comprise a pump port 36 'in communication with the first port 5' of the pressure transfer device 1 ', a supply port 35' in communication with the liquid to be pumped through an inlet manifold 14 in the flow regulation set 13 and a discharge port 37 'in communication with the discharge manifold 15 in the flow regulation set 13. In order to switch and operate between the different inlets and outlets, the flow regulator the assembly may comprise the supply valve 38 'which comprises a check valve which allows the supply of fluid from the pump when the pressure in the inlet manifold 14 is greater than the pressure in the pressure cavity 4' and less than the pressure in the discharge valve 39 '. Inlet manifold 14 is in communication with a feed pump and a mixer. The mixer mixes the liquid to be pumped and the feed pump pressurizes the inlet manifold 14 and distributes said mixed fluid to the pressure transfer devices 1 ', 1' '(pressure cavities 4', 4 ''). The blender usually mixes the liquid to be pumped with particles such as sand and propellants. This feed pump and mixer are known to the person skilled in the art and will not be described in more detail here.
    [0104] [0104] Likewise, for the system on the right side of the Figure, the flow regulation assembly 13 can comprise a pump port 36 '' in communication with the first port 5 '' of the pressure transfer device 1 '' , a 35 '' power port in communication with the liquid
    [0105] [0105] The flow regulation set 13 distributes the pumped liquid between the inlet manifold 14, the pressure cavity 4 ', 4' and the outlet manifold 15 using two check valves, one for inlet and one for outlet and loading / unloading port positioned between them. The 38 ', 38' feed valve positioned between the 35 ', 35' 'feed port and the 36', 36 '' pump port, allowing the fluid to load the 4 ', 4' 'pressure cavity when 6 ', 6' 'bellows are retracting, that is, the liquid to be pumped provides pressure from below, assisting in the retraction / compression of the 6', 6 '' bellows. The assist pressure of the liquid for the pressure transfer device in the inlet manifold 14 is typically in the range of 3 to 10 bars, replenishing the pressure cavity 4 ', 4' 'and preparing the next dose of the high pressure medium at be pumped into the well. When the bellows 6 ', 6' 'start to extend (ie the pressurized fluid is filling the internal volume 7', 7 '' of the bellows 6 ', 6' '), the supply valve 38', 38 ' 'closes when the pressure exceeds the supply pressure in the inlet manifold 14 and thus forces the discharge valve 39', 39 '' to open and thus discharge the contents in the pressure cavity 4 ', 4' 'through the discharge port 37 ', 37' 'and into the discharge manifold 15. This
    [0106] [0106] The hydraulic pump unit 11 uses central axial piston pumps configured in an industrially defined closed circuit volume, also called oscillating plate pumps. Swashplate pumps have a set of rotating cylinders containing pistons. The pistons are connected to the oscillating plate by means of a spherical joint and are pushed against the stationary oscillating plate, which is at an angle to the cylinder. The pistons suck the fluid during half a revolution and push the fluid out during the other half. The higher the slope, the more the pump pistons move and the more fluid they transfer. These pumps have a variable displacement and can alternate between the first 24 'pressure inlet / outlet port and the second 24' 'inlet / outlet port, thus directly controlling the liquid augmentation partition device (s). double acting pressure 2.
    [0107] [0107] The 16 ', 16' 'oil management system valve is exemplified as a three-way valve. However, other configurations can be used, such as an arrangement of two or more valves. The valve of the oil management system is controlled by a control system that can determine whether the correct volume of hydraulic fluid circulates between the internal volume 7 ', 7' 'of the bellows 6', 6 '' and the first and second piston chambers 17 ', 17' ', using the position sensors on the bellows and the double-acting pressure increase liquid partition device. At the same time, it allows the system to replace the oil in this closed-loop volume if the temperature in the oil reaches operating limits. This is done by isolating the second valve port 27 ', 27' 'from the double-acting pressure increasing liquid partition device and opening the communication between the first valve port 26', 26 '' and the third valve port 28 ', 28' ', thus allowing piston 30 or rod 19 in the
    [0108] [0108] The double acting pressure reinforcing liquid partition device 2 is, for example, controllable by a variable flow source of and hydraulic pump unit 11 through the first inlet / outlet port 24 'and second inlet port / outlet 24 ''. The projecting portion 30 comprising a first end (i.e., via the first piston area 30 ') in fluid communication with the first inlet / outlet port 24' and a second end (i.e., through the first piston area 30 '' ) in fluid communication with the second 24 '' input / output port. The rod 19 further defines a second piston area 31 ', 31' 'smaller than the first piston area 30', 30 ''. The rod 19 separating the first and second piston chambers 17 ', 17' 'is operated to vary volumes of the first and second piston chambers 17', 17 '' by extracting and retracting rod 19 in / out of the first and second piston chambers 17 ', 17' ', respectively. The stem 19 is partially hollow and comprises a first recess 40 'and a second recess 40' '. The first and second recesses 40 ', 40' are separated from each other. Thus, the fluid is allowed to flow between the first and the
    [0109] [0109] Function 2 of the double acting pressure increase liquid partition device is to ensure that a fixed volume of hydraulic fluid, for example oil, is loading / unloading the 6 ', 6' 'bellows. At the same time, it works as a pressure amplifier (intensifier or intensifier). In the illustrated double-acting pressure increase liquid partition device 2, the pressure is increased by having a first piston area greater 30 ', 30' 'than the second piston area 31' in the first piston chamber 17 'and second piston area 31 '' in the second piston chamber 17 '', respectively. There is a fixed ratio between the first piston area 30 ', 30' 'and the second piston area 31', 31 '', depending on the difference in the areas of the first and second piston. Therefore, a fixed pressure in the first or second outer chamber 44 ', 44' provides a fixed pressure amplified by the pressure difference of the first and second piston areas. However, the inlet pressure may vary to obtain a different pressure, but the proportion is fixed. Pressure amplification is vital to allow pumping of fluids beyond the maximum normal pressure range of industrial hydraulic pump units 11 that supply the unit and are varied to meet the pressure needs of the industry.
    [0110] [0110] The double acting pressure increasing liquid partition device 2 may comprise the position sensor 21 of the double acting pressure increasing liquid partition device which communicates continuously with the general control system which can operate at 16 ', 16' 'oil management system valve to replenish or drain the hydraulic fluid from the closed circuit volume volume based on the position sensor input of the double acting 21 pressure boost liquid partition device in the device pressure reinforcement liquid partition
    [0111] [0111] Specifically, the first and second piston chambers 17 ', 17' 'will be subjected to extreme pressure. All transitions are modeled to avoid stress concentrations. The rod 19 in the double-acting pressure-boosting liquid partition device is preferably a hollow rod to compensate for the housing balloon (case = the outer walls of the double-acting pressure-increasing liquid partition device 2) during one cycle pressure. Preferably, the hollow stem balloon is marginally smaller than the shell balloon to prevent any extrusion space between the hollow stem and the shell from exceeding the permitted limits. If this space is too large, there will be leakage on the first and second seals 22 ', 22' ', resulting in uneven volumes of fluids
    [0112] [0112] The control system has three main functions. The first main function of the control system is to control the output characteristics of the pressure transfer device 1 ', 1' ': the pressure transfer device 1', 1 '' is capable of providing flow based on various parameters, such as: flow, pressure, power or combinations of these. In addition, if two double-acting pressure-boosting liquid partition devices 2 are used, the pressure transfer device 1 ', 1' 'can provide a free pulse flow up to 50% of the maximum theoretical rate, overlapping the two pressure-reinforcing double-acting liquid partition devices 2 in such a way that one is taking control (rising to double speed) when the other is reaching its position of rotation. Thus, it achieved reduced flow rates at high pressures and high flow rates at reduced pressures, in all modalities with a substantially laminar flow. This is achieved with an overcapacity in the hydraulic unit of the pump 11. As the rate increases, there will be gradually less space for overlap and thus an increasing amount of pulsations. The variable displacement hydraulic pump unit 11 in combination with pressure sensors and bellows position sensor 12 ', 12' 'and double acting pressure increase liquid partition device position sensor 21 is critical to the flexibility that the system offers. The control system, which can be computer-based, also allows the possibility of several parallel pumping systems to act as one, tying them to a bus.
    [0113] [0113] The second main function of the control system is to provide complete control of the 6 ', 6' 'bellows movement through cycles in relation to the double acting pressure reinforcing liquid partition device
    [0114] [0114] The third main function of the control system is the valve of the oil management system 16 ', 16' 'of the control system that acts when the control system finds a difference between the positions of the augmenting liquid partition device double acting pressure 2 and the bellows 6 ', 6' 'or that the temperature is outside the predefined limits. The double acting pressure reinforcing liquid partition device 2 has, in general, the same forces and failures as a hydraulic cylinder, is robust and precise, but has a degree of internal leakage over the first and second seals 22 ', 22 '' time accumulates as an addition or retraction factor in the volume of the closed hydraulic circuit between the first and second piston chambers 17 ', 17' 'and the internal volume 7', 7 '' of the bellows 6 ', 6 ''. To solve these problems, the bellows 6 ', 6' 'and the double acting pressure reinforcement liquid partition device 2 are equipped with position sensors 12', 12 '', 21 that continuously monitor the position of these units
    [0115] [0115] Thus, at least one of the objectives of the invention is achieved by the invention, as described in the drawings, that is, a pressure transfer device and a fracturing system that can operate at high pressures with a high volume flow
    [0116] [0116] In the previous description, various aspects of the invention have been described with reference to illustrative modalities. For the sake of explanation, systems and configurations have been established to provide a complete understanding of the system and its operation. However, this description is not intended to be interpreted in a limiting sense. Several modifications and variations of the illustrative modalities, as well as other modalities of the system, which are evident to those skilled in the art
    45/46 that belongs to the disclosed subject, are considered to be within the scope of the present invention.
    Table 1: Reference List 1 ', 1' '1 Pressure transfer device 2 3.1 Double acting pressure reinforcing liquid partition device 3 2.2 Connection port 4', 4 '' 2.1 Pressure cavity 5 '2.3 First door 6 1.1 bellows 7 Internal volume of bellows 8 bellows 9 ', 9' '1.2 Guide 10', 10 '' magnet 11 7.1 Hydraulic pump unit 12 ', 12' '1.3 Bellows position sensor 13 5.1 Adjustment set of flow 14 10.1 Inlet manifold 15 9.1 Outlet manifold 16 '4.1 First valve of the oil management system 16' '4.1 Second valve of the oil management system 17' 3.2 First plunger chamber 17 '' 3.2 Second plunger chamber 18 '3.3 First plunger port 18' '3.3 Second plunger port 19 3.4 Rod 20 Hollow cylinder housing 21 3.6 Double-acting pressure reinforcing liquid partition device position 22' 3.7 First seal 22 '3.7 Second seal 23 6.1 Lubrication system
    46/46
    24 '3.8 First inlet / outlet port 24' '3.9 Second inlet / outlet port 25' 4.3 First actuator 25 '' 4.3 Second actuator 26 '4.4 First valve port 26' '4.4 First valve port 27' 4.5 Second port valve 27 '' 4.5 Second valve port 28 '4.6 Third valve port 28' '4.6 Third valve port 29' 8.1 Oil reservoir 29 '' 8.1 Oil reservoir 30 Protruding part 30 'First piston area 30' ' First piston area 31 'Second piston area 31' 'Second piston area 35' 5.2 Feed port 35 '' 5.2 Feed port 36 'Pump port 36' 'Pump port 37' Discharge port 37 '' Port discharge valve 38 'supply valve 38' 'supply valve 39' discharge valve 39 '' discharge valve 40 'first interval 40' 'second interval 42, 42' 'temperature sensor 43' inductive stem 43 '' inductive stem 44 'First external chamber 44' 'First external chamber
    权利要求:
    Claims (22)
    [1]
    1. Pressure transfer device (1 ', 1' ') for pumping fluid with particles at pressures above 500 bar, the pressure transfer device (1', 1 ') characterized by comprising a pressure chamber housing and at least one connection port (3 ', 3' '), at least one connection port (3', 3 '') that can be connected to a double-acting pressure increase liquid partition device (2) by means for fluid communication (26 ', 27'; 26 '', 27 ''), the pressure chamber housing comprises: - a pressure cavity (4 ', 4' ') within the pressure chamber compartment and at minus a first port (5 ', 5' ') for fluid inlet and / or outlet to the pressure cavity (4', 4 ''), - a bellows (6 ', 6' ') defining an internal volume ( 7 ', 7' ') inside the pressure cavity (4', 4 '') and in which the internal volume (7 ', 7' ') the bellows is in fluid communication with the connection port (3', 3 ''), so that the drive fluid in the form of hydraulic fluid pressurizes that the double-acting pressure-increasing liquid partition device (2) can enter and exit the internal volume (7 ', 7' ') of the bellows (6', 6 ''), in which the pressure cavity ( 4 ', 4' ') has a central axis (C) with an axial length (L'; L '') defined by the distance between the connection port (3 ', 3' ') and the first port (5', 5 '') and where the bellows (6 ', 6' ') is configured to move in a direction parallel to the central axis (C ', C' ') over part of the axial length (L', L '') of the pressure cavity (4 ', 4' '), in which the bellows (6', 6 '') comprises a guide system (9 ', 9' ') comprising a guide (9', 9 ''), the guide (9 ', 9' ') being connected to a lower part of the bellows (6 ', 6' ') and is configured to be guided in the pressure chamber housing that is part of the connection port (3', 3 ''), in which the guide
    (9 ', 9' ') is to coincide with or be parallel to a central axis (C', C '') of the pressure cavity (4 ', 4' ') and the bellows (6', 6 '') ) expands and retracts axially in a longitudinal direction along the central axis (C ', C' '), and in which the pressure transfer device further comprises a monitoring position of the bellows position sensor (12', 12 '') of the bellows (6 ', 6' ').
    [2]
    2. Pressure transfer device (1 ', 1' ') according to claim 1, characterized in that the pressure cavity (4', 4 '') has a variable cross-sectional area over at least part of the axial length (L ', L' ').
    [3]
    3. Pressure transfer device (1 ', 1' ') according to claim 1 or claim 2, characterized in that the bellows (6', 6 '') are radially rigid and axially flexible, so that any movement of the bellows (6 ', 6' ') is in the axial direction of it.
    [4]
    Pressure transfer device (1 ', 1' ') according to claims 1, 2 or 3, characterized in that the pressure cavity (4', 4 '') tapers towards the first port (5 ' , 5 '').
    [5]
    Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that the bellows (6', 6 '') have a radial and axial extension less than an internal surface of the pressure cavity (4 ', 4' '), thus forming a space (8', 8 '') between an external circumference of the bellows (6 ', 6' ') and an internal circumference of the pressure cavity (4', 4 '') in all bellows operating positions (6 ', 6' ').
    [6]
    6. Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that the first port (5', 5 '') is arranged in a lower section of the pressure cavity (4 ', 4' ')
    [7]
    Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that the pressure cavity (4', 4 '') is egg-shaped, elliptical, circular, spherical , ball-shaped or oval.
    [8]
    Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that the bellows (6', 6 '') have a shape adapted to the shape of the pressure cavity (4 ' , 4 '') so that the bellows, in all their operational positions, are prevented from coming into contact with an internal surface of the pressure chamber housing.
    [9]
    9. Pressure transfer device (1 ', 1' ') according to claim 7, characterized in that the bellows (6', 6 '') have a cylindrical shape, a shape similar to the accordion or a shape accordion.
    [10]
    Pressure transfer device (1 ', 1' ') according to claim 8, characterized in that the bellows (6', 6 '') are made of a rigid material.
    [11]
    Pressure transfer device (1 ', 1' ') according to claims 8 or 9, characterized in that the bellows (6', 6 '') are formed so that the particles are prohibited from being trapped between folds neighbors or convolutions in the bellows during the retraction and extraction of the bellows (6 ', 6' ').
    [12]
    Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that it further comprises a temperature sensor (42', 42 '') monitoring the temperature of a drive fluid.
    [13]
    13. Pressure transfer device (1 ', 1' ') according to claim 1, characterized in that the bellows position sensor (12', 12 '') is a linear position sensor.
    [14]
    Pressure transfer device (1 ', 1' ') according to claim 13, characterized in that a reading device (43', 43 '') is fixedly connected to the bellows position sensor (12 ', 12' ') and a magnet (10', 10 '') is fixedly connected to the guide (9 ', 9' ') and where the reading device is an inductive sensor that can read the position of the magnet so that the bellows position sensor (12 ', 12' ') can monitor a relative position of the magnet inductively and thus the bellows (6', 6 '').
    [15]
    Pressure transfer device (1 ', 1' ') according to claim 14, characterized in that the inductive sensor is an inductive rod (43', 43 '') reading the position of the magnet (10 ', 10 '').
    [16]
    Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that it further comprises an additional fluid-tight bellows within the bellows (6' ', 6' ').
    [17]
    17. Pressure transfer device (1 ', 1' ') according to any one of the preceding claims, characterized in that it also comprises an external barrier between the bellows (6', 6 '') and an internal surface of the housing of the pressure chamber.
    [18]
    18. System characterized by comprising: - the pressure transfer device (1 ', 1' ') according to any one of the preceding claims 1-17 and, - a hydraulic pump unit (11) pressurizing and acting a pressure device double-acting pressure-boosting liquid partition (2) and the double-acting pressure-boosting liquid partition (2) pressurizing and acting on the pressure transfer device (1 ', 1' '), - a set of flow regulation (13) configured to distribute the fluid between an inlet manifold (14), the pressure cavity (4 ', 4' ') and an outlet manifold (15).
    [19]
    19. System according to claim 18, further comprising a control system to control the working range of a pump bellows (6 ', 6' ') and configured to decide whether the bellows operates within a range operating position of predetermined bellows position, defined by maximum limitations, such as maximum retraction position and maximum bellows extension position, the control system being adapted to calculate if a quantity of hydraulic fluid volume is outside the operating range predetermined of the position of the bellows or not and / or monitor the positions of the bellows and the increase of pressure of double action liquid partition device and comparing with the predetermined operating range of the position of the bellows.
    [20]
    20. System according to claim 18 or 19, characterized in that it further comprises a feed pump for pumping fluid with particles into the pressure cavity, and in which the system comprises two pressure transfer devices (1 ', 1 '') and the double acting pressure booster liquid partition device (2) being configured to pressurize and discharge sequentially / - depressurize and load aided by the feed pump, the two pressure transfer devices (1 ', 1 '') operating the hydraulic pump unit (11), so that one pressure transfer device (1 ', 1' ') is pressurized and discharged while the other pressure transfer device (1', 1 '') it is depressurized and charged, and vice versa.
    [21]
    21. Fleet characterized by comprising at least two trailers, each of the trailers comprising at least one system according to any of the preceding claims 18, 19 or 20.
    [22]
    22. Use of a pressure transfer device according to any one of the preceding claims 1 to 17, a system according to claims 18 to 20 or a fleet according to claim 21, characterized in that it is in any of the following operations: hydrocarbon extraction or production, hydraulic fracturing, buffering and abandonment operations, well drilling,
    completion or stimulation operations, cementation, acidification, nitrogen circulation.
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    同族专利:
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    RU2020102351A|2021-08-04|
    US20200132058A1|2020-04-30|
    NO20171099A1|2019-01-07|
    AR112372A1|2019-10-23|
    EP3649346B1|2021-04-14|
    EP3649346A1|2020-05-13|
    US11268502B2|2022-03-08|
    AU2018298330B2|2021-05-06|
    ZA201908280B|2021-04-28|
    RU2020102351A3|2021-11-03|
    CN111065816B|2022-02-22|
    WO2019007768A1|2019-01-10|
    CA3066540A1|2019-01-10|
    CN111065816A|2020-04-24|
    PL3649346T3|2021-08-23|
    AU2018298330A1|2020-01-02|
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    法律状态:
    2021-11-03| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    NO20171099|2017-07-04|
    NO20171099A|NO20171099A1|2017-07-04|2017-07-04|Pressure transfer device and associated system, fleet and use, for pumping high volumes of fluids with particles at high pressures|
    PCT/EP2018/067209|WO2019007768A1|2017-07-04|2018-06-27|Pressure transfer device and associated system, fleet and use, for pumping high volumes of fluids with particles at high pressures|
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