• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Disclosed embodiments include a punch assembly (100, 100A, 100B, 300, 500) including a housing (106) and at least one piercing load (102) disposed within the housing (106). In addition, the perforator assembly (100, 100A, 100B, 300, 500) includes a detonating cord (118) disposed within the housing (106) and ballistically coupled to the at least one perforation load ( 102). In addition, the spike assembly (100, 100A, 100B, 300, 500) includes a first coupling location (116) and a second coupling location (114) each configured to be coupled to an additional spike assembly. A detonator assembly (118, 118A, 302) disposed within the first coupling location (116) is also included in the punch assembly (100, 100A, 100B, 300, 500). A detonator (124) of the detonator assembly (118, 118A, 302) is positioned to trip in a direction away from the detonating cord (108) disposed within the housing (106).
    公开号:FR3073617A1
    申请号:FR1859416
    申请日:2018-10-11
    公开日:2019-05-17
    发明作者:Darren Philip Walters；Thomas Earl Burky；Stuard Michael Wood
    申请人:Halliburton Energy Services Inc；
    IPC主号:
    专利说明:

    BACKGROUND The present disclosure generally relates to downhole perforators used inside a well, and more specifically an arrangement of perforator components.
    [0002] When transporting downhole perforators between a perforator loading installation and a well site for final use, certain precautions are taken. For example, downhole perforators may include removable ballistic interruptions between the detonators and the detonating cords of the downhole perforators. The removable ballistic break for each perforator is manually removed before deploying the downhole perforator inside a well. In addition, the removal of ballistic interruptions leads to additional operational steps and to the manual manipulation of a primed perforator.
    Alternatively, the detonators can be transported separately from the perforators and assembled on the site of the well. Likewise, the perforator well site assembly leads to additional operational steps and additional manual manipulation of a primed perforator. In addition, the wellsite assembly may result in a reduction in the quality of the perforator wiring connections. For example, when rock drills are assembled in the field, critical electrical connections are highly likely to be damaged or obstructed by field debris.
    PRESENTATION The present disclosure includes each of Aspects 1 to 28 set out below. These Aspects represent embodiments, in addition to those disclosed in the following parts of this disclosure, which are an integral part of the framework of this disclosure. These Aspects are:
    Aspect 1: A perforator assembly, comprising: a housing; at least one puncture charge disposed inside the housing; a detonating cord disposed inside the housing and ballistically coupled to the at least one piercing charge; a first coupling location and a second coupling location each configured to be coupled to an additional punch assembly; and a detonator assembly disposed within the first coupling location, wherein a detonator of the detonator assembly is positioned to fire in a direction of separation (or an opposite direction respectively) relative to the detonating cord disposed at the inside the housing.
    Aspect 2: Assembly according to Aspect 1, in which the detonator assembly comprises a detonator control card, and in which the detonator control card is configured to receive a trigger signal and control the triggering of the detonator .
    Aspect 3: Assembly according to Aspect 1 or Aspect 2, in which the detonator assembly is configured to detonate a second detonating cord of a second perforator assembly, when said second perforator assembly is coupled to the perforator assembly.
    Aspect 4: An assembly according to at least any one of Aspects 1 to 3, comprising an amplifier coupled to the detonating cord and adjacent to the second coupling location.
    Aspect 5: An assembly according to at least any one of Aspects 1 to 4, comprising a second detonator assembly disposed inside the second coupling location.
    Aspect 6: Assembly according to Aspect 5, in which the second detonator assembly is configured to be arranged inside a second perforator assembly, when said second perforator assembly is coupled to the perforator assembly.
    Aspect 7: An assembly according to at least any one of Aspects 1 to 6, wherein the at least one puncture charge is configured to drill holes in casing of a wellbore.
    Aspect 8: An assembly according to at least any one of Aspects 1 to 7, in which the detonator assembly is individually addressable.
    Aspect 9: An assembly according to at least any one of Aspects 1 to 8, in which the detonator assembly is non-addressable.
    Aspect 10: Assembly according to at least any one of Aspects 1 to 9, in which the detonator assembly is fixed inside the first coupling location using a threaded connection.
    Appearance 11: An extended perforator assembly, comprising: a first perforator section, comprising: a first housing; a first set of one or more perforation charges disposed within the first housing; a first detonating cord disposed inside the first housing and ballistically coupled to the first set of one or more perforation charges; a first coupling location and a second coupling location; a first detonator assembly disposed within the first coupling location, a first detonator of the first detonator assembly being configured to detonate the first detonating cord; and a second detonator assembly disposed inside the second coupling location, a second detonator of the second detonator assembly being positioned to fire in a direction of separation (or an opposite direction respectively) relative to the first detonating cord disposed at the 'interior of the first housing; and a second puncher section, comprising: a second housing; a second set of one or more perforation charges arranged inside the second housing; a second detonating cord disposed inside the second casing and ballistically coupled to the second set of one or more perforation charges, the second detonator of the second detonator assembly being configured to detonate the second detonating cord; and a third coupling location and a fourth coupling location, the third coupling location being coupled to the second coupling location of the first puncher section.
    Aspect 12: Assembly according to Aspect 11, comprising a third detonator assembly disposed inside the fourth coupling location of the second puncher section.
    Aspect 13: Assembly according to Aspect 11 or Aspect 12, in which the first detonator assembly is more downhole than the second detonator assembly when the extended perforator assembly is deployed inside a borehole.
    Aspect 14: Assembly according to at least any one of Aspects 11 to 13, in which the first detonator assembly is more at the head of the hole than the second detonator assembly when the extended perforator assembly is deployed inside d 'a borehole.
    Aspect 15: An assembly according to at least any one of Aspects 11 to 14, in which the first detonator assembly and the second detonator assembly are individually addressable by control signals.
    Aspect 16: An assembly according to at least any one of Aspects 11 to 15, in which the first detonator assembly is non-addressable.
    Aspect 17: Assembly according to at least any one of Aspects 11 to 16, in which the first detonator assembly is fixed inside the first coupling location and the second detonator assembly is fixed inside the second coupling location, each using threaded connections.
    Aspect 18: An extended perforator assembly, comprising: a first perforator section, comprising: a first housing; a first set of one or more perforation charges disposed within the first housing; a first detonating cord disposed inside the first housing and ballistically coupled to the first set of one or more perforation charges; a first coupling location and a second coupling location; and a first detonator assembly disposed within the first coupling location, a first detonator of the first detonator assembly being positioned to fire in a direction opposite to the first detonating cord disposed within the first housing; and a second puncher section, comprising: a second housing; a second set of one or more perforation charges arranged inside the second housing; a second detonating cord disposed inside the second casing and ballistically coupled to the second set of one or more perforation charges, the first detonator of the first detonator assembly being configured to detonate the second detonating cord; a third coupling location and a fourth coupling location, the fourth coupling location being coupled to the first coupling location of the first puncher section; and a second detonator assembly disposed inside the third coupling location, a second detonator of the second detonator assembly being positioned to fire in a direction of separation (or an opposite direction respectively) relative to the second detonating cord disposed at the inside the second case.
    Aspect 19: Assembly according to Aspect 18, comprising: a third puncher section, comprising: a fifth coupling location and a sixth coupling location, the sixth coupling location being coupled to the third coupling location of the second perforator section.
    Aspect 20: Assembly according to Aspect 18 or Aspect 19, in which the extended perforator assembly is arranged inside a well in a triggering configuration from top to bottom.
    Aspect 21: Assembly according to at least any one of Aspects 18 to 20, in which the extended perforator assembly is arranged inside a well in a triggering configuration from bottom to top.
    Aspect 22: An assembly according to at least any one of Aspects 1 to 10, comprising: a second perforator assembly coupled to the first coupling location comprising: a second housing; a second set of at least one puncture charge disposed inside the second housing; a second detonating cord disposed inside the second housing and ballistically coupled to the second set of at least one piercing charge, wherein the detonator assembly disposed inside the first coupling location is configured to detonate the second detonating cord; a third coupling location and a fourth coupling location positioned at opposite ends of the second punch assembly, each configured to be coupled to an additional punch assembly; and a second detonator assembly disposed inside the third coupling location, a second detonator of the second detonator assembly being positioned to fire in a direction of separation (or an opposite direction respectively) relative to the second detonating cord disposed at the inside the second case.
    Aspect 23: Extended perforator assembly, comprising: a perforator assembly according to at least any one of Aspects 1 to 10; and a second punch assembly coupled to the first coupling location, said second punch assembly comprising: a second housing; a second set of at least one puncture charge disposed inside the second housing; a second detonating cord disposed inside the second housing and ballistically coupled to the second set of at least one piercing charge, wherein the detonator assembly disposed inside the first coupling location is configured to detonate the second detonating cord; a third coupling location and a fourth coupling location positioned at opposite ends of the second punch assembly, each configured to be coupled to an additional punch assembly; and a second detonator assembly disposed inside the third coupling location, a second detonator of the second detonator assembly being positioned to fire in a direction of separation (or an opposite direction respectively) relative to the second detonating cord disposed at the inside the second case.
    Aspect 24: Assembly according to Aspect 22 or Aspect 23, comprising a third detonator assembly disposed inside the fourth coupling of the second perforator assembly.
    Aspect 25: Assembly according to at least any one of Aspects 22 to 24, in which the detonator assembly is more down the hole than the second detonator assembly when the perforator assembly and the second perforator assembly are deployed at inside a borehole.
    Aspect 26: Assembly according to at least any one of Aspects 22 to 25, in which the detonator assembly is more at the head of the hole than the second detonator assembly when the perforator assembly and the second perforator assembly are deployed at inside a borehole.
    Aspect 27: An assembly according to at least any one of Aspects 22-26, wherein the detonator assembly and the second detonator assembly are individually addressable by control signals.
    Aspect 28: Assembly according to at least any one of Aspects 22 to 27, in which the detonator assembly is fixed inside the first coupling location and the second detonator assembly is fixed inside the second coupling location, each using threaded connections.
    BRIEF DESCRIPTION OF THE DRAWINGS Illustrative embodiments of the present disclosure are described in detail below with reference to the appended schematic figures, which are incorporated herein by reference and in which:
    Figure 1 is a schematic sectional view of a perforator assembly comprising a detonator assembly;
    Figure 2 is a schematic sectional view of a puncher assembly of Figure 1;
    Figure 3 is a schematic sectional view of an extended perforator assembly;
    Figure 4 is a schematic sectional view of the extended perforator assembly of Figure 3 positioned inside a wellbore in a top-down trigger configuration; and Figure 5 is a schematic sectional view of the extended perforator assembly of Figure 3 positioned within a wellbore in a bottom-up trigger configuration.
    The illustrated figures are intended exclusively to serve as examples and are not intended to assert or imply any limitation with regard to the environment, architecture, design or process in which different embodiments can to be implemented.
    DETAILED DESCRIPTION In the following detailed description of the illustrative embodiments, reference is made to the accompanying drawings which form part thereof. These embodiments are described in sufficient detail to allow those skilled in the art to practice the object described, and it is understood that other embodiments can be used and that logical structural, mechanical modifications, electrical and chemical may be made without departing from the scope of this disclosure. In order to avoid unnecessary details to allow those skilled in the art to practice the embodiments described here, the description may omit certain information known to those skilled in the art. The following detailed description should therefore not be taken in a limiting sense, and the scope of the illustrative embodiments is defined only by the appended claims.
    It will further be understood that the terms "comprises" and / or "comprising", when used in the present description and / or the claims, indicate the presence of the characteristics, stages, operations, elements and / or components mentioned, but do not in any way prevent the presence or addition of one or more other functionalities, stages, operations, elements, components and / or groups thereof. Additionally, the steps and components described in the above embodiments and figures are merely illustrative and do not imply that any particular step or component is a requirement of a claimed embodiment.
    Unless otherwise indicated, any use of any form of the terms "connect", "engage", "couple", "attach" or any other term describing an interaction between elements is not intended to limit the interaction to the direct interaction between the elements and may also include an indirect interaction between the elements described. In the following description and in the claims, the terms "including" and "comprising" are used in a non-restrictive manner and should therefore be interpreted as meaning "including, but not limited to". Unless otherwise indicated, as used in this document, "or" does not require mutual exclusivity.
    The present disclosure relates to a perforator which drills holes in a casing at a downhole location. More particularly, the present disclosure relates to an arrangement of components of the perforator which allows the transport of the perforator while the detonator assembly is fixed and reduces the manual manipulation of the primed perforators. The embodiments presently described can be used in horizontal, vertical, deviated or non-linear wells in any type of underground formation. Embodiments can be implemented in completion operations to perforate casing before production.
    Referring to Figure 1, a schematic sectional view of a perforator assembly 100 is provided. The perforator assembly 100 includes a plurality of charges 102 which are directed in various directions radially outward from a longitudinal axis 104 of the perforator assembly 100. In other embodiments, the charges of the plurality of charges 102 can all be directed in one direction facing radially outward of the longitudinal axis 104. The charges 102 include a small amount of a powerful explosive which is formed to produce a pressure punch capable of drilling holes in casing inside a well. In one embodiment, the pressure punch is capable of drilling holes in steel, cement, rock formations or any other surface with which the load pressure punch 102 can come into contact in a bottom well . The perforator assembly 100 also includes a housing 106 which provides structural support to the perforator assembly 100. The housing 106 houses the detonating cord 108 located inside the perforator assembly 100 ballistically coupled to the charges 102 to make detonate charges 102.
    The perforator assembly 100, as illustrated in FIG. 1, is triggered from top to bottom, as indicated by the arrow 110. In an additional or other embodiment, the perforator assembly 100 can be tilted vertically to trigger from bottom to top, as indicated by arrow 112. The triggering from top to bottom (for example in the direction of arrow 110) of the perforator assembly 100 is used to pass a detonation wave of a hole head coupling 114 to downhole coupling 116 of the perforator assembly 100. This configuration reduces the length of cable feed through the perforator assembly 100. Triggering from bottom to top of the perforator assembly 100 is used for a detonation wave to travel from the bottom of the hole coupling 116 to the head of the hole coupling 114 of the punch assembly 100. In either embodiment, the operator has the possibility of selectively trigger each section 120 of the hole punch assembly 100 in an order from the most distant downhole section 120 of the hole punch assembly 100 to the most overhead section 120 of the hole punch assembly 100 on order.
    The perforator assembly 100 illustrated in Figure 1 shows the perforator 100 in an assembled displacement state. That is, the perforator assembly 100 is illustrated in a state capable of being transported with a detonator assembly 118 loaded inside the downhole coupling 116. The detonator assembly 118 is positioned so providing the detonation force to a section 120 of the perforator assembly 100 positioned in a downhole location of the illustrated section 120 of the perforator assembly 100. In a bottom-up triggering configuration, the perforator assembly 100 is tilted vertically, and the detonator assembly 118 is positioned to provide detonation force to section 120 of the perforator assembly positioned at a holehead location from the illustrated section 120 of the perforator assembly 100.
    The detonator assembly 118 includes a detonator control card 122 and a detonator 124. The detonator control card 122 controls the triggering of the detonator 124 based on the control signals received from the surface of the well. The detonator 124 is aligned in a direction which is triggered by moving away (or opposite respectively) from the detonating cord 108 of the section 120 in which the detonator assembly 118 is installed. In addition, the detonator 124 is separated from the detonating cord 108 by an impenetrable ballistic watertight bulkhead 130. In this way, even if the detonator 124 is triggered inadvertently while it is installed inside the section 120 of the perforator assembly 100, the detonator 124 is not aligned with a section of the detonating cord 108 inside the section 120 in which the detonator assembly 118 is installed. Thus, individual sections 120 of the perforator assembly 100 are transportable while the detonator assembly 118 is installed inside the individual sections 120 without threat of inadvertent triggering of charges 102. While the present application generally refers to detonator 124 as a detonator, in one embodiment, the detonator 124 can be replaced by an igniter. An igniter is triggered by an electrical signal similar to that of detonator 124, but the igniter is designed to initiate combustion of a gas generator wafer contained in an adjustment tool located at a downhole end of a chain of sections 120 of the perforator assembly 100. In this way, the adjustment tool can be used to define a variety of index cards or other devices immediately before the start of the perforation operations. The igniter may be located at a downhole end of sections 120, as illustrated with detonator 124, or the igniter may be placed in a threaded extension in a downhole end of the punch assembly 100 which s coupling to the adjustment tool.
    When an additional section 120 is coupled to the illustrated section 120 either at the bottom of the hole or at the head of the hole relative to the illustrated section 120 of the perforator assembly 100, an amplifier 126 aligned with the detonating cord 108 is also aligned with the detonator 124 of the additional section 120. When the amplifier 126 of the illustrated section 120 aligns with the detonator 124 of the additional section 120, the charges 102 of the illustrated section 120 are in a configuration capable of firing when detonating the detonator 124. To help align the components of the different sections 120 precisely, the amplifier 126 can be centered inside a load chain alignment bulkhead 128. In d ' other embodiments, the amplifier 126 can be off-center as long as the detonator 124 aligns with the amplifier 126 once connected to transfer the ballistic wave detonating cord 108. The load chain alignment watertight partition 128 positions the amplifier 126 directly in line with a detonator 124 of a detonator assembly 118 when several sections 120 of the perforator assembly 120 are connected together. In addition, the amplifier 126 is aligned with the detonating cord 108 of the individual section 120 in which the amplifier 126 is positioned. Adjacent to the downhole coupling 116, a watertight bulkhead 130 is provided inside the housing 106 of the perforator assembly 100. The watertight bulkhead 130 provides a ballistic break between the detonating cord 108 and the detonator assembly 118. in addition, sections 120 of the perforator assembly 100 can be coupled together using female threads 132 at the hole head coupling 114 and corresponding male threads 134 at the downhole coupling 116. Any other hardware or configuration suitable coupling for coupling the sections 120 is also envisaged within the framework of the subject presently described.
    Figure 2 is a schematic sectional view of a detonator assembly 118. The detonator assembly 118 comprises a housing 200 with a thread 202 on an outer edge of the housing 200. The thread 202 allows installation and removal from the detonator assembly 118 to and from the perforator assembly 100. Other methods of securing the detonator assembly 118 that sufficiently retain the detonator assembly 118 within section 120 of the perforator assembly 100 are also contemplated in connection with this disclosure. A section 120 of the perforator assembly 100 which is positioned farthest at the head of the hole inside a wellbore in a top-down trigger configuration or the furthest down the hole in a configuration triggering from bottom to top comprises an additional detonator assembly 118 which begins to trigger the charges 102 of the initial section 120 of the perforator assembly 100. This detonator assembly 118 receives the initial command signal at the level of the control card 122 and provides the instructions for triggering the detonator 124.
    In one embodiment, the detonator assembly 118 added to the most distant section at the head of the hole or the most distant at the bottom of the hole 120 may be the detonator assembly 118 which is shipped with the section 120 positioned at an opposite end of the perforator assembly 100. Once the individual sections 120 reach the well site, the section 120 installed at one end of the charge chain includes a detonator assembly 118 which is not positioned to fire at level of an amplifier 126 of a following section 120. In such an embodiment, the detonator assembly 118 of section 120 installed at the end of the perforator assembly 100 is removed and placed in a first section 120 of the charge chain in line with the amplifier 126 of the first section 120 of the perforator assembly 100. In another embodiment, a number of detonator assemblies 118 or assembly s igniters can be purchased and / or shipped separately from the assembled sections 120, and the separate detonator assemblies 118 are installed on an initial section 120 of the perforator assembly 100 since the perforator assembly 100 is assembled to be deployed in the well.
    Returning to Figure 3, a schematic sectional view of an extended perforator assembly 300 is shown. The extended punch assembly 300 includes a first section 120A and a second section 120B. While only the two sections 120A and 120B are illustrated, other sections are also envisaged to constitute the extended perforator assembly 300. For example, the extended perforator assembly 300 may, in one embodiment, comprise up to ten 120 or more sections. Each of sections 120A and 120B may include between one and twenty or more charges 102.
    The extended perforator assembly 300 includes multiple sections 120 (for example, sections 120A and 120B) coupled end to end. For example, each of the sections 120 includes a hole head coupling 114 and a downhole coupling 116. The hole head coupling 114 of a section 120 mates with a downhole coupling 116 of a different section 120. Consequently, the extended perforator assembly 300 can be personalized on the basis of a certain number of charges 102 desired at a bottom location inside the wellbore and / or a certain number of locations or areas inside the well where perforations are desired. In one embodiment, each of the sections 120 comprises a detonator assembly 118 and / or 302 which detonates the detonating cord 108 of an individual section 120.
    The detonator assemblies 118 and 302 can be radio frequency (RF) protection detonators. That is, the detonator assemblies 118 and 302 can operate so as to provide security around devices operating using radio frequency communications. For example, operators at the surface of a well can communicate on radio frequency channels to coordinate activity at a well site. Since the detonator assemblies 118 and 302 are RF protection detonators, operators can continue to communicate on the radio frequency channels while the detonator assemblies 118 and 302 are positioned inside the extended perforator assembly 300 before deployment at the bottom of the hole inside the well.
    In addition to being RF protection detonators, the detonator assembly 118A can be dispatched when it is assembled inside the section 120A. As discussed in detail above with respect to Figure 1, the detonator assembly 118A detonates in a direction away from (or respectively opposite to) the detonating cord 108 of section 120A. In this way, the section 120A of the extended perforator assembly 300 is transportable to a well site while the detonator assembly 118A is installed inside the section 120A.
    A detonator assembly 302 is installed inside a reception orifice 304 of section 120A. In one embodiment, the detonator assembly 302 can be removed from a detonator assembly port 306 of section 120B to be installed in the receiving port 304. In this manner, a number of sections 120 used to the extended perforator assembly 300 can be transported with the detonator assemblies 118/302 installed inside the sections 120 without depending on additional detonator assemblies 118/302 (for example, the detonator assemblies 118/302 shipped outside a assembled section 120) which are placed at the level of the reception orifice 304 to start the triggering of the extended perforator assembly 300.
    Figure 4 is a schematic sectional view of the extended perforator assembly 300 positioned inside a wellbore 400 in a triggering configuration from top to bottom. The extended perforator assembly 300 is positioned inside a wellbore casing 402. In one embodiment, the loads 102 of the perforator assembly 100 are positioned in the immediate vicinity of the wellbore casing 402 of so that the loads 102 pierce holes in the wellbore casing 402 upon triggering. The positioning of the loads 102 relative to the well casing 402 can be such that when the loads 102 pierce the well casing 402, an effective flow communication is provided between the well 200 and a geological formation 404. Tel as used herein, the term "immediate proximity" means that the loads 102 are positioned closer to the wellbore casing 402 than seventy-five percent of the diameter of the wellbore casing 402.
    The extended perforator assembly 300 can be introduced into the wellbore 400 using a metal cable 406. In certain embodiments, the metal cable 406 can be replaced by a smooth cable, or the extended perforator assembly 300 can be transported by hose. In one embodiment, the wire rope 406 provides a signal to the detonator assemblies 118A and 302 assembled inside the extended perforator assembly 300. When receiving a detonation signal from the wire rope 406, the sets detonators 118A and / or 302 detonate the amplifiers 126, causing the detonation of the detonating cord 108. The detonating cord 108 detonates the charges 102 of the extended perforator assembly 300 to pierce the wellbore casing 402.
    The triggering configuration from top to bottom of the extended perforator assembly 300 can be used for extended perforator assemblies 300 which each trigger sections 120A, 120B, and any additional sections 120 simultaneously. In other words, all the sections 120A, 120B, or all the additional sections 120 of the extended perforator assembly 300 are triggered at the same time when the control cards 122 of the detonator assemblies 118A, 302 or of any additional detonator assembly 118 receive a trigger signal. As illustrated, the trigger signal can come from the metal cable 406 which is used to pass the extended perforator assembly 300 downhole inside the wellbore 400. Other signal control lines are also envisaged to provide the trigger signal to detonator assemblies 118A, 302, or any additional detonator assembly 118.
    In another embodiment, the triggering configuration from top to bottom of the extended perforator assembly 300 can be used in a selective triggering operation. That is, the top-down trigger configuration can be used when selective triggering of individual sections 120A or 120B is desired. In such an embodiment, wire rope 406, or any other suitable signal control line, provides the trigger signal to each of sections 120 individually rather than to all sections 120 at the same time.
    In an embodiment with selective triggering of the triggering configuration from top to bottom, the metal cable 406 or the signal control line extends the length of the extended perforator assembly 300 to a detonator assembly 118 positioned in line with the most distant downhole section 120 of the extended punch assembly 300 (for example, 120B in the illustrated embodiment). Each of the detonator assemblies 118 and 302 can be individually addressable so that the detonators 124 are triggered using different signals supplied to each of the detonator assemblies 118 and 302. For example, each of the detonator assemblies 118 and 302 can include addresses Separate IPs for communication with a well surface. Therefore, an operator at the well surface can request the individual sections 120A and 120B to trigger the charges 102 independently of the other individual sections 120A and 120B. This allows a single extended perforator assembly 300 to perforate tubing 402 at a number of different locations or areas within wellbore 400.
    Figure 5 is a schematic sectional view of an extended perforator assembly 500 positioned inside the wellbore 400 in a triggering configuration from bottom to top. In the bottom-up triggering configuration of the extended perforator assembly 500, the extended perforator assembly 500 is deployed within the wellbore 400 to drill holes in the casing 402 and / or the surrounding geological formation 404 the wellbore 400. The bottom-up trigger configuration can be used for the extended punch assemblies 500 which each trigger sections 120A, 120B, and any additional sections 120 with a selective trigger arrangement. That is, the bottom-up trigger configuration can be used when selective triggering of individual sections 120A or 120B is desired. In such an embodiment, wire rope 406, or any other suitable signal transmission component, provides the trigger signal to each of sections 120 individually rather than to all sections 120 at the same time. In one embodiment, the bottom-up trigger configuration is generally the extended punch assembly 300 in an inverted arrangement. For example, section 120A is the most distant downhole section 120 in the extended punch assembly 500 and section 120B is the most distant hole head section 120 in the extended punch assembly 500.
    In the selective triggering embodiment of the bottom-up triggering configuration, the metal cable 406 or another control cable can extend over the length of the extended perforator assembly 500 to a detonator assembly 118 positioned in line with the most distant downhole section 120 (for example, 120A in the illustrated embodiment). Each of the detonator assemblies 118 and 302 can be individually addressable so that the detonators 124 are triggered using different signals supplied to each of the detonator assemblies 118 and 302. Therefore, an operator at a well surface can ask the individual sections 120A and 120B to trigger the loads 102 independently of the other individual sections 120A and 120B. This allows a single extended perforator assembly 500 to perforate tubing 402 at a number of different locations or areas within wellbore 400.
    Another embodiment of the selective triggering arrangement in the bottom-up triggering configuration of the extended perforator assembly 500 uses non-addressable detonators 124. In such an embodiment, the detonator assembly of the most distant downhole 118 or 302 (for example the detonator assembly 302 in the illustrated embodiment) is activated when the extended perforator assembly 500 is inserted inside the wellbore 400. The assemblies remaining detonators 118 or 302 of the extended perforator assembly 500 remain in an inactive state. For example, control cards 122 of the remaining detonator assemblies 118 and 302 are not coupled to a signal line that provides the trigger signal to the detonator assemblies 118 and 302. When the most distant downhole section is triggered 120 (for example, section 120A in the illustrated embodiment), the percussion of section 120A leads the watertight bulkhead 130 of section 120A to trigger a mechanical switch at the next detonator assembly 118 or 302 (for example, the detonator assembly 118A in the illustrated embodiment). The triggering of the mechanical switch couples the control card 122 to the signal line which supplies the trigger signal to the detonator assembly 118A. This process is repeated when each individual section 120 is triggered until the final section 120 of the extended punch assembly 500 is triggered (for example, section 120B in the illustrated embodiment).
    In another embodiment, each of the sections 120A and 120B of the extended perforator assembly 500 is triggered simultaneously. In other words, all the sections 120A, 120B, or all the additional sections 120 of the extended perforator assembly 500 are triggered simultaneously when the control cards 122 of the detonator assemblies 118A, 302 or any other detonator assembly 118 receive a signal from trigger. In such an embodiment, the trigger signal at each of the control cards 122 will be the same. As illustrated, the trigger signal can come from the metal cable 406 which is used to pass the extended perforator assembly 500 downhole inside the wellbore 400. Other signal transmission configurations are also envisaged to provide the trigger signal to detonator assemblies 118A, 302, or any additional detonator assembly 118.
    The embodiments described above have been presented for the purposes of illustration and to allow those skilled in the art to practice the description, but the description is not intended to be exhaustive or limited to described forms. Many non-substantial modifications and variations will be apparent to those skilled in the art, without departing from the scope of this disclosure. The scope of the claims is intended to largely cover the embodiments described and any modification of this type.
    Although this specification provides specific details relating to certain components relating to a perforator assembly, it can be appreciated that the list of components is only illustrative and is not intended to be exhaustive or limited to the forms described. Other components related to the perforator casings inside a wellbore will appear to those skilled in the art without departing from the scope of the present disclosure. Furthermore, the scope of the claims is intended to broadly cover the components described and all components of this type which are apparent to those skilled in the art.
    It should be obvious from the foregoing disclosure of illustrative embodiments that significant benefits have been provided. The illustrative embodiments are not limited to the descriptions and illustrations included in this disclosure, and may instead be subject to various changes and modifications without departing from the scope of this disclosure.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. Punch assembly (100, 100A, 100B, 300, 500), characterized in that it comprises:
    a housing (106);
    at least one puncture charge (102) disposed inside the housing (106);
    a detonating cord (108) disposed inside the housing (106) and ballistically coupled to the at least one piercing charge (102);
    a first coupling location (116) and a second coupling location (114) each configured to be coupled to an additional punch assembly; and a detonator assembly (118, 118A, 302) disposed within the first coupling location (116), wherein a detonator (124) of the detonator assembly (118, 118A, 302) is positioned to fire in a direction of separation relative to the detonating cord (108) disposed inside the housing (106).
    [2" id="c-fr-0002]
    The assembly (100, 100A, 100B, 300, 500) of claim 1, wherein the detonator assembly (118, 118A, 302) comprises a detonator control card (122), and wherein the control card The detonator (122) is configured to receive a trigger signal and control the triggering of the detonator (124).
    [3" id="c-fr-0003]
    3. assembly (100, 100A, 100B, 300, 500) according to claim 1 or 2, in which the detonator assembly (118, 118A, 302) is configured to detonate a second detonating cord of a second perforator assembly, when said second perforator assembly is coupled to the perforator assembly (100, 100A, 100B, 300, 500).
    [4" id="c-fr-0004]
    4. An assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 3, comprising an amplifier (126) coupled to the detonating cord (108) and adjacent to the second coupling location (114).
    [5" id="c-fr-0005]
    5. An assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 4, comprising a second detonator assembly (302) disposed inside the second coupling location (114).
    [6" id="c-fr-0006]
    6. The assembly (100, 100A, 100B, 300, 500) according to claim 5, wherein the second detonator assembly is configured to be disposed inside a second perforator assembly, when said second perforator assembly is coupled to the '' perforator assembly (100, 100A, 100B, 300, 500).
    [7" id="c-fr-0007]
    7. An assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 6, in which the at least one perforation charge (102) is configured to pierce holes in a casing (402) a wellbore (400).
    [8" id="c-fr-0008]
    8. An assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 7, in which the detonator assembly (118, 118A, 302) is individually addressable.
    [9" id="c-fr-0009]
    9. An assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 7, in which the detonator assembly (118, 118A, 302) is non-addressable.
    [10" id="c-fr-0010]
    10. Assembly (100, 100A, 100B, 300, 500) according to any one of claims 1 to 9, in which the detonator assembly (118, 118A, 302) is fixed inside the first coupling location ( 116) using a threaded connection (202).
    [11" id="c-fr-0011]
    11. An assembly (300, 500) according to any one of claims 1 to 10, comprising:
    a second perforator assembly (100A, 100B) coupled to the first coupling location (116), comprising:
    a second housing (106);
    a second set of at least one puncture charge (102) disposed inside the second housing (106);
    a second detonating cord (108) disposed inside the second housing (106) and ballistically coupled to the second set of at least one piercing charge (102), wherein the detonator assembly (118A, 302) disposed inside the first coupling location (116) is configured to detonate the second detonating cord (108);
    a third coupling location (116) and a fourth coupling location (114) positioned at opposite ends of the second punch assembly (100A, 100B), each configured to be coupled to an additional punch assembly;
    and a second detonator assembly (118A, 302) disposed within the third coupling location (116), a second detonator (124) of the second detonator assembly (118A, 302) being positioned to fire in a direction of separation relative to the second detonating cord (118) disposed inside the second housing (106).
    [12" id="c-fr-0012]
    12. An assembly (300, 500) according to claim 11, comprising a third detonator assembly disposed inside the fourth coupling (114) of the second perforator assembly (100A, 100B).
    [13" id="c-fr-0013]
    13. An assembly (300, 500) according to claim 11 or 12, in which the detonator assembly (118A, 302) is more downhole than the second detonator assembly (118A, 302) when the perforator assembly and the second puncher assembly are deployed within a wellbore (400).
    [14" id="c-fr-0014]
    14. An assembly (300, 500) according to any one of claims 11 to 13 dependent on claim 8, wherein the detonator assembly (118A, 302) and the second detonator assembly (118A, 302) are individually addressable by of the
    5 control signals.
    [15" id="c-fr-0015]
    15. An assembly (300, 500) according to any one of claims 11 to 14, in which the detonator assembly (118A, 302) is fixed inside the first coupling location (116) and the second detonator assembly ( 118 A, 302) is attached to
    10 inside the second coupling location (114), each using threaded connections (202).
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    同族专利:
    公开号 | 公开日
    US20200063536A1|2020-02-27|
    DE112017007928T5|2020-06-18|
    US10876381B2|2020-12-29|
    GB2581632A|2020-08-26|
    GB202005323D0|2020-05-27|
    WO2019098991A1|2019-05-23|
    BR112020007245A2|2020-10-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    WO2015179787A1|2014-05-23|2015-11-26|Hunting Titan, Inc.|Box by pin perforating gun system and methods|
    US20170115102A1|2015-10-23|2017-04-27|G&H Diversified Manufacturing Lp|Perforating tool|US20180306010A1|2016-12-30|2018-10-25|Halliburton Energy Services, Inc.|Modular charge holder segment|US4850438A|1984-04-27|1989-07-25|Halliburton Company|Modular perforating gun|
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    法律状态:
    2019-10-30| PLFP| Fee payment|Year of fee payment: 2 |
    2020-04-24| PLSC| Search report ready|Effective date: 20200424 |
    2021-05-14| RX| Complete rejection|Effective date: 20210407 |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/US2017/061523|WO2019098991A1|2017-11-14|2017-11-14|Detonator assembly for transportable wellbore perforator|
    USWOUS2017061523|2017-11-14|
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