• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    intervention tool for downhole use in a wellbore, method of limiting a seal to create a repair repair adhesive in a downhole well, and use of a magnetorheological fluid. certain aspects are directed to devices for use in a wellbore in an underground formation. an intervention tool is provided that can be used to place a self-assembly repair screen, adhesive, plug, create a repair isolation zone, conduct repair fixup, or otherwise provide a repair repair to one or more components completion in a downhole configuration. the intervention tool may have a tool shaft, at least two magnets positioned with respect to the tool shaft, a carrier fluid containing magnetically responsive particles, one or more injection holes in the tool shaft, and a fluid deployment system for cause implantation of carrier fluid off the tool axis through one or more injection holes.
    公开号:BR112016008740B1
    申请号:R112016008740-2
    申请日:2013-12-19
    公开日:2021-08-10
    发明作者:Zachary Ryan Murphree；Michael Linley Fripp；Thomas Jules Frosell
    申请人:Halliburton Energy Services, Inc；
    IPC主号:
    专利说明:

    Technical Field of Development
    [0001] The present disclosure relates generally to devices for use in a wellbore in an underground formation, and more particularly (though not necessarily exclusively) to an intervention tool that can be used to place a repair screen of self-assembly, adhesive, plug, create a repair isolation zone, conduct repair fixup, or otherwise provide a repair repair for one or more components in a downhole configuration. Refers to an intervention tool that can create a seal or inject fluid through a completion. Background
    [0002] Various devices can be used in a well that crosses an underground formation containing hydrocarbon. In many cases, it may be desirable to divide an underground formation into zones and isolate those zones from one another to prevent cross-flow of fluids from the rock formation and other areas into the annular space. There are inflow control devices that can be used to balance production, for example to avoid all production from a well zone. Without such devices, the zone can produce sand, be subjected to erosion, water rupture or other detrimental problems.
    [0003] For example, a packer device can be installed along the production pipeline in the well. Expansion of an elastomeric element can cause the packer to expand and limit fluid flow through an annular space between the packer and tubing. Shutters are placed when the completion is seated. However, there are other cases when one or more zones of a well may need to be separated or blocked during repair work.
    [0004] Zones can also be separated by one or more screens. For example, screens can be used to control the migration of formation sands into production tubes and surface equipment, which can cause washouts and other problems, particularly from unconsolidated sand formations from offshore fields. In a gravel pack, fluids can be used to load gravel from the surface and deposit the gravel in the annular space between a sand control screen and the wellbore. This can help hold the formation sand in place. Formation fluid can flow through the gravel, screen and into the production tube. Sometimes screens become damaged due to pressure from gravel, erosion or other environmental forces or conditions.
    [0005] There are also inflow control devices (ICD) that can be used to control unwanted fluids from entering production piping. For example, an inflow control device can be installed and combined with a sand screen in an unconsolidated reservoir. Reservoir fluid flows from the formation through the sand screen and into the flow chamber, where it continues through one or more tubes. Tube lengths and their inside diameters are generally designed to induce the proper pressure drop to move the flow through the tube at a constant pace. The inflow control device serves to equalize the pressure drop. Equalized pressure drop can provide more efficient completion. Other inflow control devices can be referred to as standalone inflow control devices (AICD). An AICD can be used when production causes unwanted gas and/or water to migrate into the wellbore. An ACID can be used when irregular production distribution results due to pressure drop in the pipeline. An AICD initially functions as a passive ICD, yet limits water and gas production at the break to minimize gas and water cuts.
    [0006] Although shutters, screens and inflow control systems are often fitted in completion, there are cases when repair or overhaul work needs to be done on components after they have already been placed. Brief Description of Drawings
    [0007] Figure 1 shows a side view of a wellbore with a damaged screen section.
    [0008] Figure 2 shows a side view of an intervention tool being supplied to the damaged screen section.
    [0009] Figure 3 shows a side view of fluid being supplied to repair the damaged screen section by creating a seal.
    [0010] Figure 4 shows the sealed screen section after tool removal.
    [0011] Figure 5 shows a side view of a wellbore with a water inflow area that needs to be plugged.
    [0012] Figure 6 shows a side view of an intervention tool being provided to the area.
    [0013] Figure 7 shows a side view of fluid being supplied to the area to create a seal.
    [0014] Figure 8 shows the capped area after tool removal.
    [0015] Figure 9 shows a side view of a wellbore with a water inflow control device that may be defective and needs to be blocked.
    [0016] Figure 10 shows a side view of an intervention tool being provided to the inflow control device area.
    [0017] Figure 11 shows a side view of fluid being supplied to the inflow control device area to create a seal.
    [0018] Figure 12 shows the inflow control device blocked after tool removal.
    [0019] Figure 13 shows a side view of a wellbore with boreholes to be plugged.
    [0020] Figure 14 shows a side view of an intervention tool being provided to the drilling area.
    [0021] Figure 15 shows a side view of fluid being supplied to the perforations to create repair fixture.
    [0022] Figure 16 shows the perforations sealed after removal of the tool.
    [0023] Figure 17 shows a side view of a completion with an ICD/AICD in a completion having pre-placed magnets along it.
    [0024] Figure 18 shows a side view of figure 17 with an intervention tool in use.
    [0025] Figure 19 shows a side view of a shunt tube having magnets pre-placed along it. Detailed Description
    [0026] Certain aspects and examples of the present disclosure are directed towards a service tool (which may also be referred to as an "intervention tool," a laying tool, or any other tool that can be extended to the bottom of the well after a completion has been done). The intervention tool can function as a service tool that can be extended down from completion through the production liner. The intervention tool can carry a fluid that is used to create a repair seal or adhesive. The intervention tool has certain features that allow it to implant the fluid and hold the fluid in place while the fluid cures, sets or otherwise hardens.
    [0027] In one aspect, the intervention tool is used to charge a fluid filled with magnetically responsive particles (ie, a magnetorheological fluid). The fluid generally includes a carrier fluid and magnetically responsive particles. The fluid can be viscous so that it has certain and various flow properties. The intervention tool is designed to carry fluid to the downhole location that needs a repair repair. When fluid is implanted from the tool, one or more magnets in the intervention tool attract the magnetically responsive particles. The magnetic attraction between the fluid and the magnets slows down fluid movement. This decrease in fluid movement generally helps to keep the fluid in the desired space between the magnets. Magnets essentially “hold” the fluid in motion by virtue of the magnetic attraction between the magnetically responsive particles in the fluid and magnets. This allows a repair seal or adhesive to be formed.
    [0028] Co-pending application no. PCT/US2013/076456 entitled “Self-assembling packer” reveals a self-assembling packer that can be deployed using this magnetic technology. For example, self-assembly packer components can be seated in a pipe string that is a part of the components initially transported to the bottom of the well at completion. The packer is generically a self-assembly packer that is created by injecting a fluid filled with magnetically responsive particles into an annular space between a pair of magnets positioned in a pipeline. When a magnetic field passes through the fluid, the particles align with a magnetic field created by the magnets so that the particles hold the carrier fluid between magnets. After the carrier fluid is allowed to cure and harden, the resulting material functions as a packer. This allows the packer to be placed without a hydraulic grip or other forces typically used to form a packer.
    [0029] However, in addition to instances when a packer needs to be placed during completion, there are also instances when a repair seal needs to be placed during maintenance, for example, on a wireline, slickline, spiral piping, articulated piping, or another line during later repair work after completion has already been extended. Aspects of this disclosure are thus related to the provision of an intervention tool that allows self-assembly packer technology to be applied in situations that require or benefit from repair work. This disclosure therefore provides methods of locally controlling the axial flow of fluid (eg, a carrier fluid with magnetically responsive particles) that has been injected into the bottom of the well.
    [0030] These illustrative examples are given to introduce the reader to the general subject discussed here and are not intended to limit the scope of the concepts revealed. The following sections describe various additional aspects and examples with reference to the drawings in which like numerals indicate similar elements, and directional descriptions are used to describe the illustrative aspects. The following sections use directional descriptions such as “above,” “below,” “top”, “bottom”, “up”, “down”, “left”, “right”, “wellhead”, “bottom of well", etc., in relation to the illustrative aspects as shown in the figures, the upward direction being towards the top of the corresponding figure and the downward direction being towards the bottom of the corresponding figure, the mouth direction of well being towards the well surface and the downhole direction being towards the toe of the well. As illustrative aspects, numerals and directional descriptions included in the following sections are not to be used to limit the present disclosure.
    [0031] In one aspect, it may be desirable to provide an intervention tool that can transfer a magnetorheological fluid to the bottom of the well. The fluid can be used to create a seal that acts to close or “stick” or otherwise repair a damaged area. For example, the fluid can be used to repair a damaged section of screen by locally capping the screen with a sealant. The fluid can be used to plug a water inflow area into a wellbore production zone. The fluid can be used to block an inflow control device (ICD or AICD) flow path to selectively stop zone production from a zone. The fluid can be used to create a repair fix or otherwise locally fix a section of the completion. These are just non-limiting examples of potential uses for downhole fluid: other uses are possible and considered to be within the scope of this disclosure.
    [0032] More specifically, in one aspect, the intervention tool can be used to transport a magnetorheological fluid seal to the bottom of the well. Limiting magnets on the tool serve to “freeze” the fluid seal in the desired location due to magnetic forces between magnetically responsive particles in the seal and a magnetic field created by the tool. When the tool is positioned where the repair work is to be carried out, the fluid seal is injected, and the tool remains in place so that limiting magnets will limit the axial flow of the fluid seal until it hardens. After the seal has hardened, the tool can be removed.
    [0033] Figures 1-4 show an intervention tool 10 as can be used to repair a damaged screen section 16 by locally capping the screen with a sealant. Figure 1 is a side view of a wellbore with a damaged screen section 16. Figure 2 shows a side view of an intervention tool 10 being supplied to the damaged screen section 16. This figure shows the tool 10 when transporting the fluid 12 to the bottom of the well, with magnetic components 20, 22 in the laying tool 10. The tool 10 may be wireline, slickline, spiral tube, articulated tubing, or any other system suitable for the location of damage.
    [0034] The tool 10 generally has an axis 11 that can be provided for the bottom of the well. When tool 10 has reached the location where fluid 12 is to be injected, fluid 12 is induced to be pushed out of tool 10 through injection holes 24. Figure 3 shows a side view of fluid 12 being supplied to the section of 16 damaged screen to create a seal. Figure 4 shows the seal 18 created in the screen section after removing tool 10.
    [0035] In one aspect, the fluid 12 provided is generally a carrier fluid 12 which is a magnetorheological fluid, ferrofluid, or a fluid otherwise having magnetically responsive particles 14 contained therein. Fluid 12 may generally be a fluid to which its fluid resistance is modified by subjecting it to a magnetic field. Carrier fluid 12 can be formed from magnetically responsive particles 14 and a carrier to form a paste. In one aspect, fluid 12 contains magnetically responsive particles 14 of a ferromagnetic material, such as iron, nickel, cobalt, any ferromagnetic, diamagnetic or paramagnetic particles, ferromagnetic particles, any combination thereof, or any other particles that can receive and react to a magnetic force. Any particles 14 that are attracted to magnets can be used in fluid 12 and are considered to fall within the scope of this disclosure. (It should be noted that the figures are not drawn to scale and are for illustrative purposes only. For example, particles 14 are not easily visible due to their small size, and thus have been exaggerated in the figures for ease of viewing.)
    [0036] Any suitable particle size can be used for particles 14 of fluid 12. For example, nanoparticles can range from nanometer size to micrometer size. In one example, particles can be in the size range of approximately 100 nanometers to approximately 1000 nanometers. In another example, the particles might be less than 100 nanometers. In another example, the particles can vary in micrometer size, for example, up to approximately 100 microns. It should be understood that other particle sizes are possible and considered to be within the scope of this disclosure. In embodiments where particles are referred to as "nanoparticles", it should be understood that the particles can also be micron sized, or a combination of nanoparticles and microparticles. Particles 14 may also be of any shape, non-limiting examples of which include spheres, spheroids, tubular, corpuscular, fiber, oblate spheroids, or any other suitable shape. Multiple shapes and multiple sizes can be combined into a single particle group 14.
    [0037] The shape of the actual particles can be altered in an effort to create improved internal particle locking. For example, round particles can be used. However, elongated or rod-shaped particles can lock more securely and create a stronger packer in place. Particles can be shaped to better entangle between to form the packer. Particle length can also be modified to provide variable lock settings. It is believed that a particularly useful length could be from approximately 10 nanometers to approximately 1 millimeter, although other options are possible and understood within the scope of this disclosure.
    [0038] The fluid 12 may generally be formed from magnetically responsive particles 14 that are mixed into a carrier fluid. Any suitable carrier fluid can be used that can contain the magnetically responsive particles 14, allow for a flow of the particles 14, and can be used to form a seal 18. In a specific aspect, the carrier fluid is a polymer precursor. The polymer precursor can be a material that forms crosslinks. Non-limiting examples of polymer precursors that can be used in connection with this disclosure include, but are not limited to, plastics, adhesives, thermoplastics, thermoset resins, elastomeric materials, polymers, epoxies, silicones, sealants, oils, gels, glues, acids, thixotropic fluids, dilating fluids, or any combination thereof. The polymer path can be a single piece (eg a UV or moisture curing silicone). Alternatively, the polymer precursor can be a multi-part system (for example, a vinyl addition or a platinum catalyst curing silicone).
    [0039] The polymer precursor should generally be a material that can charge magnetically responsive particles 14 and cure or otherwise harden after appropriate forces, environmental conditions or time. The polymer precursor must be a material that can create a seal. The polymer precursor must be a material that can be loaded down the well into tool 10 and activated or otherwise mixed into the downhole. For example, a material that has a requirement to be mixed on the surface and pumped to the bottom of the well, such as cement, is not preferable. Polymer precursors provide the characteristic of being distributed to the bottom of the well without having to be activated for immediate use. Any other type of polymer precursor or other material that can act as a carrier for magnetically responsive particles 14 and that can cure to form a seal or otherwise act as a seal is generally considered to be within the scope of this disclosure.
    [0040] Carrier fluid 12 can form a seal or otherwise act as a seal in response to appropriate forces, environmental conditions or weather. A non-limiting example of a suitable carrier fluid includes an epoxy. Other non-limiting examples of suitable carriers include one-part or multi-part systems. A specific option can be a one-part or multi-part epoxy. Other non-limiting examples of a suitable carrier fluid include silicones, oils, polymers, gels, elastomeric materials, glues, sealants, water, soap, acids, fusible metals, thixotropic fluids, expanding fluids, any combination thereof, or any other fluid that can contain the nanoparticles and allow them to flow, yet create a final seal. Any material that can act as a carrier for the particles 14 and that can solidify, cure or harden (to form a seal or otherwise act as a sealant under appropriate forces, environmental conditions or weather) is possible for use and considered to be within the scope of this revelation.
    [0041] In some aspects, the carrier can be formed in multiple stages. For example, an epoxy can be used that has a two-part configuration (eg a two-part epoxy), where parts A and B are housed separately from each other and mixed as they pass through a static mixer on your way to the damaged area to be repaired. In another aspect, the particles 14 can be in one part of fluid and another part of the carrier fluid can be in a second part, so that the two (or more) parts are combined after dispensing.
    [0042] The tool contains the carrier fluid 12 in it. In one aspect, carrier fluid 12 can be housed in a housing with a distribution conduit. The housing can house carrier fluid 12 in a pre-arranged condition. Alternatively, the housing may be designed to hold portions A and B of carrier fluid 12 separately until just prior to implantation of carrier fluid 12. For example, a divider wall may be provided in the housing to hold polymer precursor portions of the carrier fluid. 12 separated from each other until implantation.
    [0043] As shown in Figures 2 and 3, tool 10 may have a pair of magnet rings 20, 22. Magnet rings 20, 22 may surround the outer diameter of tool shaft 11, may be positioned on the inner diameter of the tool 10, may be incorporated in the tool material, or otherwise. Magnets 20, 22 can be attached or otherwise secured to tool 10 by any suitable method. Non-limiting examples of suitable methods include adhesives, welding, mechanical fastening, incorporating the magnets into the tool material, or any other option. Additionally or alternatively, magnet components may be installed prior to completion, as described for additional aspects below. Magnets can be permanent magnets or electromagnets.
    [0044] Although shown and described as rings 20, 22, the magnets can be magnetic blocks or any other formed magnetic component that can be separated in tool 10 and provide the desired functions of attracting magnetically responsive particles 14 from fluid 12. For example Although two magnet rings 20, 22 are shown for ease of reference, it is to be understood that magnet rings 20, 22 can be a series of individual magnets positioned in a ring around the area to be made magnetic. The general concept is that magnets 20, 22 form a magnetic space between them that racially extends from the tool 10. The magnetic space extends beyond the outer diameter of the tool.
    [0045] The aspects described can also work on the electrorheological fluid principle, where the fluid responds to electric fields that are produced by a component(s) in the laying tool, completion, or both.
    [0046] The tool may also have one or more fluid injection holes 24. One or more injection holes 24 carry fluid 12 from the interior of the tool 10 to the desired target area. In one aspect, injection ports 24 may be sealed or otherwise covered by a component that prevents carrier fluid 12 from exiting tool 10 until desired. In one aspect, a rupture disc can be provided, which ruptures upon application of pressure. Carrier fluid 12 can be implanted through the tool via any suitable method, such as pressure from a piston or any other component or force that can apply pressure to the fluid 12.
    [0047] In one aspect, the rupture disk may be a small piece of sheet, metal or other material that contains a fluid 12 within the intervention tool 10 until pressure is applied. In another aspect, the rupture disk may be a dissolvable buffer that dissolves at a certain ambient pH, or otherwise ceases to contain fluid 12 in response to a preselected shot. For example, the rupture disk can be formed as a temperature sensitive material or buffer of shape memory material that dissolves at a certain temperature, shrinks or increases under a certain environmental condition, or otherwise ceases to contain fluid 12 in response. to a pre-selected trigger. For example, tampon dissolution can cause a piston to push fluid 12 out of the opening created.
    [0048] In additional or alternating aspects, a passive implantation of the rupture disk may allow fluid 12 to disperse into the target area. For example, an electronically triggered system can be used to trigger fluid release. Fluid 12 can be pushed through injection port 24 by a downhole power unit (DPU), an electronic rupture disk (ERD), hydrostatic pressure, a Ledoux-style or moyno-style hydraulic pump, or any other number. of means. Any method or system that delivers fluid from the interior of the tool to the desired location near the damaged screen is thought to fall within the scope of this disclosure.
    [0049] After implantation, the carrier fluid 12 passes through a magnetic field created by the magnets 20, 22. This causes the magnetically responsive particles 14 to align with the created magnetic field. This alignment causes the magnetically responsive particles 14 to retain the carrier fluid 12 between the magnets 20, 22. The interaction between the particles 14 and the magnets 20, 22 allows the carrier fluid 12 to fill the space 26 between the magnets 20, 22. , but prevents fluid 12 from moving too fast beyond the desired space 26.
    [0050] This allows fluid 12 to create a seal or repair fabric adhesive 18 by affixing the damaged section of fabric 16 by locally capping the damaged fabric area with a sealant. The seal (formed of carrier fluid 12 and magnetically responsive particles 14) is pumped out of tool 10 into screen 16. Magnets 20, 22 limit its axial flow. After the sealant has hardened and the fabric section 16 is no longer permeable or otherwise secured as desired, then the tool 10 can be removed.
    [0051] Tool 10 may have an outer coating that allows easy release of the tool from the cured or hardened seal. The outer coating can be a Teflon® coating, a mold release coating, or any other type of coating that allows removal of tool 10 without breaking seal 18.
    [0052] In another embodiment, the tool 10 can be used to plug inflow of water. One of the problems that can occur during the process of recovering oil from a formation is the loss of well productivity at the beginning of the inflow of water. Therefore, it may be necessary to block and/or stop water production zones. Tool 10 and its method of use described here can be used to apply a sealant over an area 28 that is producing unwanted water influx, as shown by the “W” filled arrows. The desired oil inflow is shown by the dotted “O” arrows. Figure 5 shows a side view of a wellbore with a water inflow area 28 that needs to be plugged. Figure 6 shows a side view of an intervention tool 10 being supplied to the area. Figure 7 shows a side view of carrier fluid 12 being supplied to the area 28 to be sealed. Figure 8 shows the sealed area after removal of tool 10. This figure shows the still water flow “W”, but the flow “O” of continuous oil. In use, magnets 20, 22 cause shrinkage and standstill of carrier fluid 12 due to the interaction between magnetically responsive particles 14 and magnets 20, 22. After seal 18 has been formed, tool 10 is removed.
    [0053] In one aspect, the independent repair system extrudes a carrier fluid 12 comprising a seal or a tensile stress fluid over the water production site 28. The water production site is shown by arrows W. The result is that flow from that zone of water inflow area 28 is minimized. No more water W can flow into the production pipeline. This is evidenced by the dotted “O” arrows in figure 8, which indicate the flow of oil, but no water, into the production pipeline.
    [0054] In a related aspect, it may be necessary to block an inflow device flow path (ICD and/or an AICD) 30. As shown in Figures 9-12, the intervention tool 10 can be used to selectively stop the producing a zone with an ICD/AICD control 30 by compressing a sealing fluid 12 into the ICD/AICD flow path 32. Figure 9 is a side view of a wellbore with a water inflow control device 30 which is defective and must be blocked. The fluid produced travels through the screen 34, through an ICD/AICD 30, and into the production line 36. Figure 10 shows a side view of an intervention tool 10 being supplied through the production line 36 and to the inflow control device area 30. Figure 11 shows a side view of carrier fluid 12 being supplied to the inflow control device flow path 32 to be blocked to create a seal 18. Figure 12 shows the control device blocked inflow 30 with a seal 18 after tool removal. This shows that after fluid 12 (which may be an epoxy, polymer precursor, or other sealing substance with magnetically responsive particles) is implanted or extruded out of tool 10, tool 10 can be removed. The result is that the blocked zone would no longer produce. This would allow an ICD/AICD 30 to be turned off, rather than simply limiting the flow.
    [0055] Another aspect may be to provide repair zonal isolation. Tool 10 can be extended into a section of screens. In this regard, tool 10 can be used to isolate different zones on those screens that would otherwise be in communication outside of completion. This is similar to the repair screen traversal concept described above, but with a different intent. In this case, there is no damage to the screen being secured with the seal. Instead, fluid 12 is pumped to isolate the production at the top of the screen from that at the bottom. This can prevent fluid communication in the outer annular space between these two zones.
    [0056] An additional aspect provides repair fixing. For example, tool 10 can be used to locally clamp a section of the completion. For example, tool 10 can be used to plug perforations 38 or as a repair fastening system. Figure 13 shows a side view of the wellbore with perforations 38 to be plugged. Figure 14 shows a side view of an intervention tool 10 being provided for the drilling area. Figure 15 shows a side view of carrier fluid 12 being fed into perforations 38 to create repair attachment. Figure 16 shows the sealed perforations after tool removal.
    [0057] In any of the aspects described, after carrier fluid 12 has been positioned as desired, fluid 12 is allowed to cure or harden or otherwise create a seal. The polymer precursor material of carrier fluid 12 may begin to cross-link and cure. For example, the passage of time, applied heat and/or exposure to certain fluids or environments causes the carrier fluid 12 to harden and/or cure to form a packer 10 at the desired location. For example, an elastomeric carrier can cure through vulcanization. A one-part epoxy can cure after a time of being exposed to wellbore fluids. A silicone sealant can be used as a one-part epoxy that hardens and cures on exposure to water. A slow hardening gel or other gel can harden in the presence of water. Two-part systems generally cure due to a chemical reaction between the two-part components after mixing. Other carriers/sealants can be used that cure based on temperature or any other environmental cure.
    [0058] Additional aspects, alternative options, and possible changes to the above disclosure are also possible. For example, carrier fluid 12 can be selected so that it has self-healing properties that will provide a self-cure seal. For example, silicone sealants have been shown to have self-healing properties. Carrier fluids that harden into a self-curing material can be advantageous for repairing damage from over-bending, over-pressurizing, piping movement, and so on. Self-cure can additionally be accomplished by adding an encapsulated curing agent and catalyst to the mixture. Crack formation would break up the encapsulated curing agent that would seal the crack. The use of hollow glass fibers can also provide a self-healing packer element.
    [0059] Additionally, in the aspects described above, the implantation of the carrier fluid 12 is accomplished by generally forcing the carrier fluid into the area to be sealed. Alternatively, the particle solution can be enclosed in a dissolvable pouch or bladder. When the bladder dissolves or degrades, particles can be attracted towards the magnets. The particle solution can be enclosed in a water-soluble box with a material such as polyglycolic acid (PGA), polylactic acid (PLA), salt, sugar, or other water-soluble (or other solution-soluble material such as brine contact) or acid). Reactions can be triggered by contact with water, acid or brine solution. Additionally or alternatively, the carrier fluid 12 may be enclosed in a temperature degradable housing with a material such as a fusible metal, a low-melting thermoplastic, or a magnesium or aluminum housing that would galvanically react in water. Applied voltages can be used to cause the galvanic reaction to occur almost instantaneously and/or the voltage can be used to delay the galvanic reaction.
    [0060] Although some methods and aspects have been described above, the general steps and methods described for using the intervention tool 10 can be used for repair work anywhere along the wellbore after completion has been laid.
    [0061] Additionally or alternatively, an additional aspect provides pre-placed magnets at completion. The pre-placed magnet aspect can be used with the intervention tool 10 as shown and described above, which has magnets 20, 22 positioned on it. Additionally or alternatively, magnets pre-placed at completion can be used with a service/supply tool that can deliver fluid 12 but do not have magnets positioned in it. For example, in one aspect, one or more magnets can be installed at predetermined locations in the completion before the completion is extended into the well. As an example, if zonal isolation is required between two screen sections, magnetic barriers can be pre-installed between the screen sections. One or more injection holes can be installed between the magnets. This provides the possibility to create a seal through the screens if this becomes necessary. For example, the magnetic field can be created with one or more magnets built into the screens during assembly. Additionally or alternatively, if an intervention tool with magnets is used, the magnetic field may permeate through the screens from the inside diameter of the tool 10.
    [0062] As another example, magnets 40, 42 can be pre-positioned on either side of an ICD/AICD 30. Figure 17 shows a side view of a completion with an ICD/AICD 30 having magnets pre-placed along it. This would allow the later option of supplying a carrier fluid 12 to that area to block the ICD/AICD 30 if necessary. Forming fluid "F" is shown flowing through forming wall 44, into the ICD or AICD 30, and into an opening 46 in the production line 36. If carrier fluid 12 is supplied into the opening 46, would effectively block the function of the ICD/AICD 30. In this example, carrier fluid 12 can be drawn into the ICD/AICD 30. By providing magnets 40, 42 on completion 36 instead of laying tool 10 (as previously described) , traditional closure elements can be relied upon to limit fluid movement between tool 10 and completion 36. Magnets 40, 42 can provide axial flow limitation external to completion.
    [0063] In a further aspect, magnets 40, 42 can be positioned on completion as well as on an intervention tool 10. This option is illustrated by figure 18. Figure 18 shows a side view of figure 17 with an intervention tool. 10 having magnets 20, 22 positioned thereon in use. This figure illustrates an intervention tool 10 that is configured to inject fluid 12 into a desired space 48 (eg, between tool 10 and completion). Magnets 20, 22 in tool 10 can limit carrier fluid 12 from forming a seal in desired space 48. In this example, carrier fluid 12 would form a seal in space 48 between magnets 20, 22 in tool 10 to block opening 46 on completion .
    [0064] The features described in the present invention can be used to block or seal other parts of the completion. For example, Figure 19 shows a side view of a bypass tube 50 having magnets 52, 54 pre-placed adjacent to them. Bypass tube 50 is shown positioned generally parallel to completion column 56 with a packer element 58 in place. A pack of 60 gravel is also in place. The bypass tube 50 is generally used as an underpass below the packer 58. It is desirable to have the bypass tube 50 open and flowing to the gravel pack process, however it may be desirable to cap the bypass tube 50 after the pack of gravel. 60 gravel has been laid. In that case, magnets 52, 54 positioned directly on the bypass tube 50 can decrease the carrier fluid 12 that can be supplied along with (or through) the gravel pack. This carrier fluid 12 can be referred to as a gravel-laden fluid in this case. The gravel-laden carrier fluid 12 is allowed to pass through the bypass tube 50, but induced to stop due to magnetic forces between the magnetically responsive particles in the fluid 12 and magnets 52, 54 in the bypass tube 50. This would effectively block the bypass tube. bypass 50 to carry additional fluids.
    [0065] The aspects described here can also be used to supply any type of working fluid to the downhole. for example, tool 10 can be used to deliver magnetorheological acids that could be used to dissolve buffers, provide localized well stimulation, clean boreholes, or any other uses. This disclosure is in no way intended to limit the alternative fluids that may be provided. For example, in a variation, a first fluid can be injected into an AICD/ICD to stop flow through the device. This first fluid can be used to create complete water lock. After time, a second fluid can be injected into the AICD/ICD to remove the first fluid. This would flow back through the canvas section. Alternatively the second fluid can be used to dissolve a bypass around the AICD/ICD and return flow through the screen section.
    [0066] The repair process described generally uses magnets to limit the fluid and guide the fluids toward the area that needs sealing or treatment described. This disclosure also allows a user to create a fluid location placement in an existing wellbore. Magnets are used to limit the fluid and guide the fluid to its target location. This approach includes adding magnetically or magnetically responsive iron particles to a carrier fluid so that the resulting magnetorheological fluid interacts with magnets in a service tool or elsewhere. The result is targeted stimulation, targeted acid work, or targeted placement of chemical such as a scale inhibitor or any other working fluid to be delivered down the well.
    [0067] In one aspect, an intervention tool for downhole use in a wellbore is provided, comprising a tool shaft; at least two magnets positioned with respect to the tool axis; a carrier fluid comprising a polymer precursor and magnetically responsive particles; one or more injection holes in the tool shaft, a fluid implantation system for causing implantation of carrier fluid outside the tool axis through the one or more injection holes.
    [0068] In a further aspect, there is provided a method for limiting a seal to create a repair adhesive for repair in a downhole wall, comprising: providing a radially extended magnetic force field; providing a magnetorheological carrier fluid with a polymer precursor component that cures to form a seal; Dispense the magnetorheological fluid so that the fluid is limited by the magnetic force field, allowing the fluid to cure to form a repair adhesive for repair.
    [0069] The above description, including aspects and illustrated examples, has been presented for illustration and description purposes only and is not intended to be exhaustive or limiting of the precise forms disclosed. Numerous modifications, adaptations and uses thereof will be apparent to those skilled in the art without departing from the scope of the present disclosure.
    权利要求:
    Claims (24)
    [0001]
    1. Intervention tool for use at the bottom of the well in a wellbore, characterized in that it comprises: - a tool axis (11); at least two magnets (20, 22) positioned in relation to the tool axis (11 ); - a carrier fluid (12) comprising a polymer precursor configured to crosslink, cure and form a seal (18) and magnetically responsive particles (14); - one or more injection holes (24) in the tool shaft (11 );- a fluid implantation system for causing implantation of the carrier fluid (12) outside the tool axis (11) through one or more injection holes (24), at least two magnets (20, 22) comprising ring magnets positioned on an outside diameter of the tool shaft (11).
    [0002]
    2. Intervention tool according to claim 1, characterized in that a magnetic field from at least two magnets (20, 22) comprises a radially extended magnetic field that guides the magnetically responsive particles (14) to seal a space (26) in need of a repair repair.
    [0003]
    3. Intervention tool according to claim 1, characterized in that the carrier fluid (12) is a non-cement sealant that cures and hardens to harden, creating a secure seal.
    [0004]
    4. Intervention tool according to claim 1, characterized in that the carrier fluid (12) comprises at least one of plastic, adhesive, thermoplastic, thermoset resin, elastomeric material, polymer, epoxy, silicone, sealant, oil, gel, glue, acid, thixotropic fluid, dilating fluid or any combination thereof.
    [0005]
    5. Intervention tool according to claim 1, characterized in that the magnetically responsive particles (14) comprise nanoparticles.
    [0006]
    6. Intervention tool according to claim 1, characterized in that the magnetically responsive particles (14) comprise iron, nickel, cobalt, diamagnetic particles, paramagnetic particles, ferromagnetic particles or any combination thereof.
    [0007]
    7. Intervention tool according to claim 1, characterized in that the carrier fluid (12) comprises a silicone and the magnetically responsive particles (14) comprise iron particles.
    [0008]
    8. Intervention tool according to claim 1, characterized in that the intervention tool (10) is used for a repair repair to repair one or more damaged screens (16), blocking a water production zone ( 28), block inflow through an inflow control device (30) or an autonomous inflow control device to provide permanent fluid flow stop, block inflow through a screen section (16), provide targeted stimulation, a bleached acid work, targeted placement of a chemical, or targeted delivery of a magnetorheological acid.
    [0009]
    9. A method of limiting a seal to create a repair repair adhesive in a downhole well, characterized in that it comprises:- providing a radially extended magnetic force field; - providing a magnetorheological carrier fluid (12) with a polymer precursor component that cures to form a seal (18); - dispensing the magnetorheological fluid so that the fluid is limited by the magnetic force field; - allowing the fluid to cure to form a repair repair adhesive, the magnetic force field being provided on a service tool (10).
    [0010]
    10. Method according to claim 9, characterized in that the service tool (10) is used for a repair repair to repair one or more damaged screens (16).
    [0011]
    11. Method according to claim 9, characterized in that the service tool (10) is used to block a water production zone (28).
    [0012]
    12. Method according to claim 9, characterized in that the service tool (10) is used to block inflow through an inflow control device (30) or an autonomous inflow control device to provide stopping of permanent fluid flow.
    [0013]
    13. Method according to claim 9, characterized in that the service tool (10) is used to block inflow through a screen section (16) to provide stop of fluid flow.
    [0014]
    14. Method according to claim 9, characterized in that the service tool (10) is used for targeted stimulation, bleached acid work, targeted placement of a chemical, or targeted delivery of a magnetorheological acid.
    [0015]
    15. Method according to claim 9, characterized in that the magnetic force field is provided in a well completion.
    [0016]
    16. Intervention tool for use at the bottom of the well in a wellbore, characterized in that it comprises: - a tool axis (11); - at least two magnets (20, 22) positioned in relation to the tool axis ( 11); - a carrier fluid (12) comprising a polymer precursor configured to crosslink, cure and form a seal (18) and magnetically responsive particles (14); - one or more injection holes (24) in the tool shaft ( 11); - a fluid implantation system to cause implantation of the carrier fluid (12) outside the tool axis (11) through one or more injection holes (24), with a piston being driven by a power unit of downhole), an electronic rupture disc, hydrostatic pressure, or a hydraulic pump.
    [0017]
    17. Intervention tool according to claim 16, characterized in that a magnetic field from at least two magnets (20, 22) comprises a radially extended magnetic field that guides the magnetically responsive particles (14) to seal a space (26) in need of a repair repair.
    [0018]
    18. Intervention tool according to claim 16, characterized in that the carrier fluid (12) is a non-cement sealant that cures and hardens to harden, creating a secure seal.
    [0019]
    19. Intervention tool according to claim 16, characterized in that the carrier fluid (12) comprises at least one of plastic, adhesive, thermoplastic, thermoset resin, elastomeric material, polymer, epoxy, silicone, sealant, oil, gel, glue, acid, thixotropic fluid, dilating fluid or any combination thereof.
    [0020]
    20. Intervention tool according to claim 16, characterized in that the magnetically responsive particles (14) comprise nanoparticles.
    [0021]
    21. Intervention tool according to claim 16, characterized in that the magnetically responsive particles (14) comprise iron, nickel, cobalt, diamagnetic particles, paramagnetic particles, ferromagnetic particles or any combination thereof.
    [0022]
    22. Intervention tool according to claim 16, characterized in that the carrier fluid (12) comprises a silicone and the magnetically responsive particles (14) comprise iron particles.
    [0023]
    23. Intervention tool according to claim 16, characterized in that a magnet (20, 22) is fixed on one side of the injection orifice (24) and another magnet (20, 22) is fixed on the other side of the injection orifice (24).
    [0024]
    24. Intervention tool according to claim 16, characterized in that the intervention tool (10) is used for a repair repair to repair one or more damaged screens (16), blocking a water production zone ( 28), block inflow through an inflow control device (30) or an autonomous inflow control device to provide permanent fluid flow stop, block inflow through a screen section (16), provide targeted stimulation, a bleached acid work, targeted placement of a chemical, or targeted delivery of a magnetorheological acid.
    类似技术:
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    同族专利:
    公开号 | 公开日
    SA516370947B1|2020-07-07|
    WO2015094274A1|2015-06-25|
    GB2535043A|2016-08-10|
    SG11201602016UA|2016-04-28|
    NO20160428A1|2016-03-14|
    GB2535043B|2017-08-30|
    US9982508B2|2018-05-29|
    CA2927575C|2019-03-19|
    AU2013408294B2|2017-04-13|
    US20150345250A1|2015-12-03|
    AU2013408294A1|2016-04-07|
    MX2016006386A|2016-08-01|
    CA2927575A1|2015-06-25|
    GB201604646D0|2016-05-04|
    BR112016008740A2|2017-08-01|
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    法律状态:
    2020-03-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-06-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-08-10| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/US2013/076505|WO2015094274A1|2013-12-19|2013-12-19|Intervention tool for delivering self-assembling repair fluid|
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