Downhole tool system with multiple safety barriers

Abstract

The present invention discloses a downhole tool system with multiple safety barriers. The system comprises a power comms module for controlling the timing of activation of a firing head assembly, while providing multiple safety barriers. The system comprises a setting tool having a setting piston, and a firing head assembly connected to the setting tool. The firing head assembly comprises a housing with inlet ports, a sealing module blocking the opening port, a firing pin, and a tensile element. The setting piston is configured to control the movement of the sealing module and open the inlet ports, on receiving a signal from the power comms module after implementation of safety barriers. The tensile element is configured to shear if the external pressure exceeds the pressure rating of the tensile element. The tensile element shears to shift the firing pin into position to strike an initiator to cause an explosion event.

Description

DOWNHOLE TOOL SYSTEM WITH MULTIPLE SAFETY BARRIERS TECHNICAL FIELD

[0001] The present disclosure relates generally to a downhole tool system, and more particularly, to a downhole tool system with multiple safety barriers.BACKGROUND

[0002] The completion of oil or gas wells often involves perforating the well casing to create passages or holes, allowing fluid communication between the wellbore and the hydrocarbon-producing formation. The perforations in oil or gas wells are typically created using a downhole system having a perforating gun equipped with shaped charges. This gun is inserted into the wellbore using various means such as electric wireline, slickline, tubing, or coiled tubing. The gun is lowered to reach a desired depth, usually adjacent to a hydrocarbon-producing formation. Subsequently, a surface signal activates a firing head associated with the perforating gun.

[0003] The firing head triggers the detonation of the shaped charges. The resulting projectiles or jets penetrate the casing, enabling formation fluids to flow from the formation through the perforations and into the production string for extraction to the surface. In the conventional downhole system, the entire tool is exposed to a high-pressure environment and the operation of the system could not be halted during overpressure events. Further, a tensile element shears and activates the firing head on receiving a signal from the downhole system. The tensile element acts as a barrier to prevent unintentional detonation of explosives.

[0004] However, conventional downhole systems provide only one barrier and fail to offer adequate measures to prevent inadvertent activation of explosive elements. The lack of enhanced safety protocols and preventative measures within downhole operations increases the risk of unintended detonation, which could lead to serious consequences such as injury, equipment damage, or environmental hazards. One scenario involves a downhole tool, such as a perforating gun, prematurely discharging at the surface of a wellbore while personnel are in the process of rigging the tool for deployment into the wellbore. Such incidents pose significant risks to the safety of personnel and the integrity of equipment.

[0005] Therefore, there is a need for a downhole tool system that facilitates the safe and consistent initiation of shaped charges within a firing head assembly in a wellbore tool. Further, there is a need for a firing head assembly equipped with safety features that prevent the firinghead assembly from firing unless specific deliberate actions are taken by the operator, indicating a clear intent to initiate the firing sequence.SUMMARY OF THE INVENTION

[0006] The present invention discloses a downhole tool system. The system comprises a pressure isolation firing head assembly coupled to a setting tool, which houses a power comms module. The power comms module is configured to control timing of activation of the firing head assembly. The power comms module is configured to provide at least two safety barriers to activate the firing head assembly. In one embodiment, the power comms module comprises a timer module and a motion sensor. The timer module prevents activation of the firing head assembly until a pre-defined first time period has elapsed after connection of the power comms module to the firing head assembly. The first time period defines a first safety barrier.

[0007] The power comms module is further configured to apply a pre-defined motion sequence to the downhole system to indicate the firing head assembly is to be activated in a pre-defined second time period. A pre-defined physical motion is applied to the downhole tool after the elapse of the first time period. The pre-defined motion sequence defines a second safety barrier.

[0008] The setting tool comprises a first housing and a setting piston disposed within the first housing. The firing head assembly comprises a second housing having a first end portion and a second end portion, one or more inlet ports defined on the second housing at the first end portion, a sealing module configured to control opening of the inlet port, a firing pin disposed below the sealing module and a tensile element arranged between the firing pin and a percussion initiator.

[0009] The sealing module comprises a slick rod disposed in the second housing and a pull rod extends within the slick rod. The slick rod blocks the inlet port. The sealing module is restrained from axial movement within the second housing. The setting piston enables the slick rod and pull rod to move on receiving the signal to open the inlet port. The power comms module activates to unlock the pressure isolation feature after the implementation of the predefined physical motion and elapse time period.

[0010] Further, the firing pin is shiftable from a first position to a second position to strike aninitiator. The tensile element is configured to shear in response to a threshold pressure applied to the tensile element to release the firing pin from the first position to move to the second position. The opening of the inlet port exposes the tensile element to an external pressure condition existing external to the second housing and if the external pressure applied to the tensile element is greater than a pressure rating of the tensile element, the tensile element shears thereby shifting the firing pin to the second position to strike the initiator. The tensile element defines a third safety barrier.

[0011] The downhole tool system further comprises a first tubular member extending from the second end portion of the second housing. The firing pin is disposed at the first tubular member. The downhole tool system further comprises a second tubular member connected to the first tubular member. The percussion initiator is disposed at the second tubular member. The downhole tool system further comprises a drop bar connected to the firing pin. The drop bar extends from the first tubular member to the second tubular member. The downhole tool system further comprises a ball retainer having ball bearings to hold the pull rod in position and prevent movement of the pull rod. The downhole tool system further comprises a pin member disposed adjacent to the pull rod configured to lock components of the firing head assembly. The pin member is configured to shear on operation of the setting piston.

[0012] In one embodiment, a method of operation of the downhole tool system is disclosed. At one step, a pre-defined first time period is set in the timer module to prevent activation of the firing head assembly until the first time period has elapsed. At yet another step, the timer module is initiated after the connection of the power comms module to the firing head assembly. At yet another step, the power comms module is configured to apply a pre-defined motion sequence to the downhole system to indicate the firing head assembly to be activated in a second pre-defined time period. At yet another step, the inlet ports are opened to expose the tensile element to an external pressure condition existing external to the second housing. The setting piston enables the slick rod and pull rod to move on receiving the signal to open the inlet port. Further, the tensile element is exposed to a pressure rating of the tensile element to shear the tensile element. At yet another step, the shearing of the tensile element causes the firing pin to strike the percussion initiator and create the explosion event.BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 exemplarily illustrates a side view of a downhole tool system, according to an embodiment of the present invention.

[0014] FIG. 2 exemplarily illustrates a see- through view of the downhole tool system of FIG.1.

[0015] FIG. 3 exemplarily illustrates a side view of a firing head assembly of the downhole tool system of FIG. 1.

[0016] FIG. 4 exemplarily illustrates a see-through view of the firing head assembly of the downhole tool system of FIG. 1.

[0017] FIG. 5 exemplarily illustrates a side view of an arrangement of a slick rod and a slick rod nut of the firing head assembly, according to an embodiment of the present invention.

[0018] FIG. 6 exemplarily illustrates a side view of an arrangement of a pull rod and ball bearings of the firing head assembly, according to an embodiment of the present invention.

[0019] FIG. 7 exemplarily illustrates a side view of an arrangement of a firing pin, a drop bar and an initiator of the firing head assembly, according to an embodiment of the present invention.

[0020] FIG. 8 exemplarily illustrates a flowchart of a method of operation of the downhole tool system of FIG. 1.DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0021] Example, embodiments of the disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which example embodiments are shown. The concepts discussed herein may, however, be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope to those of ordinary skill in the art. Like numbers refer to like elements but not necessarily the same or identical elements throughout.

[0022] Referring to FIG. 1 and FIG. 2, a downhole tool system 100 comprises a a firing headassembly 104 coupled to a setting tool 102. The system 100 further com prises a power comms module () 106 configured to control the setting tool 102. The power comms module 106 is configured to control the timing of activation of the firing head assembly 104. The power comms module 106 is configured to provide at least two safety barriers to activate the firing head assembly 104. The power comms module 106 comprises a timer module and a motion sensor.

[0023] Referring to FIG. 2 to FIG. 4, the setting tool 102 comprises a first housing 108 and a setting piston 110 disposed within the first housing 108. The firing head assembly 104 comprises a second housing 112, one or more inlet ports 114, a sealing module, a firing pin 120, a tensile element 122 and a percussion initiator 124. The second housing 112 is coupled to outer threads of the first housing 108. The second housing 112 comprises a first end portion and a second end portion. The inlet ports 114 are formed on the second housing 112 at the first end portion.

[0024] Referring to FIG. 4 and FIG. 7, the sealing module comprises a pull rod 118 and a slick rod 116. The slick rod 116 is disposed at the first end portion of the second housing 112. The pull rod 118 is disposed below the slick rod 116. The sealing module is connected to the setting piston 110. Further, one or more O-rings 140 are provided at the slick rod 116. The slick rod 116 blocks the inlet port 114. The sealing assembly and the O-rings 140 prevent entry of pressure into the firing head assembly 104. The power comms module 106 sends the signal to the sealing module after the implementation of the safety barrier. The setting piston 110 enables the slick rod 116 and the pull rod 118 to move or perform stroking operation. The setting piston 110 enables the slick rod 116 and the pull rod 118 to move on receiving the signal to open the inlet port 114.

[0025] The firing head assembly 104 comprises a pin member 136 disposed proximal to the pull rod 118. The pin member 136 is configured to lock the components of the firing head assembly 104. The pin member 136 is configured to shear on operation of the setting piston 110 and enables the operation of the components of the firing head assembly 104.

[0026] Referring to FIG. 5 and FIG.6, a slick rod nut 138 is provided to lock the slick rod 116. Further, the pull rod 118 is disposed below the slick rod 116. The pull rod 118 extends within the slick rod 116 through the slick rod nut 138. Further, the firing head assembly 104 comprises one or more ball bearings 134 and a ball retainer 132 to lock the pull rod 116. The slick rod 116 and the pull rod 118 is positioned above a first tubular member 126. The ball bearing 134 also locks the pull rod 118. On shearing of the pin member 136, the pull rod 118 is enabled to operate.

[0027] Referring to FIG. 4 to FIG. 7, the firing pin 120 is disposed below the sealing module. Specifically, the firing pin 120 is disposed below the pull rod 118. The firing pin 120 is configured to shift from a first position to a second position to strike the initiator 124. The firing head assembly 104 comprises a first tubular member 126 extending from the second end portion of the second housing 112. The firing pin 120 is disposed at the first tubular member 126. The firing pin 120 disposed at the first tubular member 126 extends from the second end portion of the second housing 112 and is received within the first tubular member 126. The firing head assembly 104 further comprises a second tubular member 128 connected to the first tubular member 126. The initiator 124 is disposed at the second tubular member 128. The tensile element 122 is arranged between the firing pin 120 and the initiator 124. Further, a drop bar 130 is connected to the firing pin 120. The drop bar 130 is disposed to extend from the first tubular member 126 to the second tubular member 128.

[0028] The tensile element 122 is exposed to pressure on movement of the pull rod 118 and the slick rod 116 above the inlet port 114. The tensile element 122 is configured to shear in response to a threshold pressure applied to the tensile element 122 to release the firing pin 120 from the first position to move to the second position. Further, if the tensile element 122 is exposed to an external pressure exceeding its rated pressure, the tensile element 122 will shear, thereby causing the firing pin 120 to transition from the initial first position to the subsequent second position.

[0029] In operation, the system 100 is designed to prevent exposure of the firing head assembly 104 to wellbore pressure during run-in-hole or any other operation. The power comms module 106 exposes the firing head assembly 104 to pressure only for initiation of the primary explosive event. The system 100 is configured to open the inlet ports 114 to expose the tensile element 122 to an external pressure condition existing external to the second housing 112. The setting piston 110 enables the slick rod 116 and pull rod 118 to move on receiving the signal to open the inlet port 114. Further, the tensile element 122 is exposed to a pressure rating of the tensile element 122 to shear the tensile element 122. The shearing of the tensile element 122 causes the firing pin 120 to strike the percussion initiator 124 and create the explosion event.

[0030] In another embodiment, the power comms module 106 sends the signal to the setting tool 102 to initiate operation, only after implementation of the safety barrier. A pre-defined first time period is set in the timer module to prevent activation of the firing head assembly 104 until the first time period has elapsed. The first time period defines a first safety barrier.

[0031] Further, a pre-defined motion sequence is applied to the downhole system 100 to indicate the firing head assembly 104 is to be activated in a pre-defined second time period.The pre-defined physical motion or motion sequence is applied to the downhole system 100 after elapse the first time period. The pre-defined motion sequence defines a second safety barrier. The pre-defined physical motion is set using software. The application of the predefined motion sequence defines a second safety barrier. The power comms module activates to unlock the pressure isolation feature after the implementation of the pre-defined physical motion and elapse time period.

[0032] After applying the pre-defined motion sequence and elapse of a pre-defined time, the power comms module 106 sends a signal to operate the slick rod 116 and the pull rod 118 to open the inlet port 114. The slick rod 116 and the pull rod 118 move upwards and pass the inlet port 114 to open the inlet port 114.

[0033] The ball bearings 134 and the pin member 136 acts as a dependent barrier. During operation of the slick rod 116 and the pull rod 118, the dependent barriers are disengaged. The ball bearing 134 prevents the pull rod 118 from moving downwards towards the firing pin 120. Once the stroking mechanism takes place, the firing head assembly 104 is exposed to pressure and the ball bearings 134 drops over the firing pin 120. Thereafter, the firing head assembly 104 is pressured up to exceed a pressure rating of the tensile element 122, which fires the explosive. The tensile element 122 shears and enables the drop bar 130 to activate the percussion initiator 124. The initiator 124 activates by impact of the drop bar 130 which creates the explosive event. For example, if the pressure rating of the tensile element 122 is 1500psi and the external pressure is 2000psi, the exposure of the tensile element 122 to the external pressure shears the tensile element 122. In another example, if the pressure rating of the tensile element 122 is 3500psi and the external pressure is 1500psi, the tensile element 122 will not shear even after exposure to the external pressure. This could act as another safety barrier. In such conditions, the external pressure is further increased to control the shearing of the tensile element 122 and activation of the percussion initiator 124.

[0034] FIG. 8 exemplarily illustrates a flowchart 800 of a method of operation of the downhole tool system 100, according to an embodiment of the present invention. At step 802, the downhole tool system 100 is lowered into a wellbore. In one embodiment, the wellbore is formed by a drilling process in which dirt, rock and other subterranean materials are removed to create the wellbore. In some embodiments, a portion of the wellbore is cased with a casing (not illustrated). In other embodiments, the wellbore is maintained in an open-hole configuration without casing. The embodiments described herein are applicable to either cased or open-hole configurations of wellbore, or a combination of cased and open-hole configurations in a particular wellbore.

[0035] After drilling of wellbore is complete and the associated drill bit and drill string are“tripped” from wellbore, a tubing or a conveyance, which may be a drill string, drill pipe, coiled tubing, production tubing, wireline, downhole tractor or another type of tubing deployable in a wellbore, is lowered into wellbore.

[0036] In certain configurations, the tubing serves as a conduit for lowering downhole tool system 100. The tubing facilitates the movement of the tool system 100 to a desired downhole location within the formation. The tubing provides a pathway for fluid communication between the surface of the well and the downhole location. This allows fluids to flow into an annulus surrounding the system 100. Subsequently, the tool system 100 could be activated or manipulated as needed to perform specific operations within the wellbore.

[0037] After the deployment of the setting tool 102 and the firing head assembly 104, the pulse control module 106 is connected to the setting tool 102 upon run-in-hole. Further, following the acquisition of run-in-hole time from the previous run, a first time period is set on the timer module of the fire-on-command power comms module 106 to provide minimum time for the system 100 to reach target depth before any tool initiation begins. The power comms module 106 prevents activation of firing head assembly 104 until the first time period has elapsed. Furthermore, the timer module is set and would only commence once the power comms module 106 is connected to setting tool 102 upon Run-in-hole. The first time period defines a first safety barrier and keeps the inlet port 114 closed.

[0038] At step 804, after the tool system 100 reaches the target depth and elapse of the first time period, the power comms module 106 is configured to apply a pre-defined motion sequence to the downhole system 100 to indicate the firing head assembly 104 is to be activated in a pre-defined second time period. The pre-defined motion sequence is performed to initiate the arming sequence. The application of the pre-defined motion sequence defines a second safety barrier. After arming the firing head assembly 104, depth adjustment or any extra correlation could be performed during this stage.

[0039] After application of the pre-defined motion sequence, the firing head assembly 104 requires a fixed amount of time or third pre-defined time period to release other dependent barriers of the firing head assembly 104 before opening the pressure inlet port 114. On elapse of the third pre-defined time period, the setting piston 110 is configured to move, which initiates the movement of the slick rod 116 and pull rod 118 and enables shearing of the pin member 136. The shearing of the pin member 136, and the movement of the slick rod 116 and the pull rod 118 opens the inlet port 114 and exposes the tensile element 122 to external pressure or borewell pressure.

[0040] At step 806, the opening of the inlet port 114 exposes the tensile element 122 to anexternal pressure condition existing external to the second housing 112. If the rated pressure of the tensile element 122 is lower than the pressure of the external pressure, the tensile element 122 shears thereby shifting the firing pin 120 to the second position to strike the initiator 124. The system 100 enables to apply pressure exceeding a pressure rating of the tensile element 122, which has been planned before run-in-hole. As a result, the tensile element 122 undergoes shear failure and imparts an impacton the initiator 124 to initiate firing.

[0041] Upon completion of the downhole operation, a waiting period of 15 minutes is observed following the pressurization and verification of the successful detonation of downhole explosives. Subsequently, the pressure is gradually bled off, and the process of pulling out of the hole (POOH) is initiated, following the specific procedure outlined by the customer. Finally, with the conclusion of the operation, the downhole tool system 100 is disengaged.

[0042] The system 100 is utilized for initiating primary explosive events, which in turn activate various explosive events commonly employed in oil industry operations such as tube puncture, tubing cutter, and event perforation. These operations are frequently utilized in plug and abandon (P&A) procedures within the oil industry. The system 100 controls the opening of the inlet port 114 to control the firing of the firing head assembly 104. The multiple safety barriers of system 100 prevent the firing head assembly 104 from firing unless specific deliberate actions are taken by the operator, indicating a clear intent to initiate the firing sequence.

[0043] Although the features, functions, components, and parts have been described herein in accordance with the teachings of the present disclosure, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all embodiments of the teachings of the disclosure that fairly fall within the scope of permissible equivalents.

[0044] Many modifications and other implementations of the disclosure set forth herein will be apparent having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the disclosure is not to be limited to the specific implementations disclosed and that modifications and other implementations are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

CLAIMS1. A method for activating a downhole tool system, comprising:lowering a downhole tool system into a tubing;positioning the downhole tool system at a desired location within the tubing, wherein the downhole system comprises a power comms module, a setting tool and a firing head assembly coupled to the setting tool,wherein the power comms module is configured to control timing of activation of a firing head assembly, wherein the power comms module is configured to provide at least two safety barriers to activate the firing head assembly,wherein the setting tool is connected to the power comms module, wherein the setting tool comprises a first housing and a setting piston disposed within the first housing, andwherein the firing head assembly coupled to the setting tool comprising:a second housing having a first end portion and a second end portion;one or more inlet ports defined on the second housing at the first end portion;a sealing module configured to control opening of the inlet port, wherein the sealing module comprises a slick rod disposed in the second housing and a pull rod extends within the slick rod, wherein the slick rod blocks the inlet port, wherein the sealing module is restrained from axial movement within the second housing,a firing pin disposed below the sealing module, wherein the firing pin is shiftable from a first position to a second position to strike a percussion initiator to create an explosion event, anda tensile element arranged between the firing pin and the initiator, the tensile element is configured to shear in response to a threshold pressure applied tothe tensile element to release the firing pin from the first position to move to the second position;connecting the power comms module to the setting tool, wherein the power comms module comprises a timer module and a motion sensor module;opening the inlet port to expose the tensile element to an external pressure condition existing external to the second housing, wherein the setting piston enables the slick rod and pull rod to move on receiving signal to open the inlet port,applying pressure at the tensile element exceeding a pressure rating of the tensile element, andshearing a tensile element to cause the firing pin to strike the percussion initiator and create the explosion event.

2. The method of claim 1, wherein, before opening of the inlet port, the method further comprises steps of:setting a pre-defined first time period in the timer module to prevent activation of the firing head assembly until the first time period has elapsed;initiating the timer module after connection of the power comms module to the firing head assembly, andenabling the power comms module to receive a pre-defined motion sequence of the downhole system to indicate the firing head assembly to be activated in a second predefined time period.

3. The method of claim 1, wherein the first time period defines a first safety barrier, the application of the pre-defined motion sequence defines a second safety barrier and the tensile element defines a third safety barrier.

4. The method of claim 1 , wherein the firing head assembly further comprises a first tubular member extending from the second end portion of the second housing, wherein the firing pin is disposed at the first tubular member.

5. The method of claim 1 , wherein the firing head assembly further comprises a second tubular member connected to the first tubular member, wherein the initiator is disposed at the second tubular member.

6. The method of claim 5, wherein the firing head assembly further comprises a drop bar connected to the firing pin, wherein the drop bar extends from the first tubular member to the second tubular member.

7. The method of claim 1 , wherein the firing head assembly further comprises a ball retainer having ball bearings to hold the pull rod in position and prevent movement of the pull rod.

8. The method of claim 1 , wherein the firing head assembly further comprises a pin member disposed adjacent to the pull rod configured to lock components of the firing head assembly, wherein the pin member is configured to shear on operation of the setting piston.

9. A downhole tool system, comprising:a firing head assembly coupled to a setting tool, wherein the setting tool connected to a power comms module, wherein the setting tool comprising a first housing and a setting piston disposed within the first housing, wherein the power comms module is configured to provide at least two safety barriers to activate the firing head assembly and control timing of activation of the firing head assembly,wherein the firing head assembly comprising:a second housing having a first end portion and a second end portion;one or more inlet ports defined on the second housing at the first end portion;a sealing module configured to control opening of the inlet port, wherein the sealing module comprises a slick rod disposed in the second housing and a pull rod extends within the slick rod, wherein the slick rod blocks the inlet port, wherein the sealing module is restrained from axial movement within the second housing, wherein the setting piston enables the slick rod and pull rod to move on receiving signal to open the inlet port, wherein the power comms module sends the signal to the sealing module after implementation of the safety barrier;a firing pin disposed below the sealing module, wherein the firing pin is shiftable from a first position to a second position to strike a percussion initiator, anda tensile element arranged between the firing pin and the initiator, the tensile element is configured to shear in response to a threshold pressure applied to the tensile element to release the firing pin from the first position to move to the second position, wherein the opening of the inlet port exposes the tensile element to an external pressure condition existing external to the second housing and if the external pressure applied to the tensile element is greater than a pressure rating of the tensile element, the tensile element shears thereby shifting the firing pin to the second position to strike the initiator.

10. The downhole tool system of claim 9, wherein the power comms module comprises a timer module and a motion sensor.

11. The downhole tool system of claim 10, wherein the timer module prevents activation of firing head assembly until a pre-defined first time period has elapsed after connection of the power comms module to the firing head assembly, wherein the first time period defines a first safety barrier.

12. The downhole tool system of claim 9, wherein the power comms module is configured to receive a predefined motion sequence of the downhole system to indicate the firing head assembly is to be activated in a predefined second time period, wherein the power comms module receive the motion sequence of the downhole system after the elapse of the first time period, power comms modulewherein the application of the pre-defined motion sequence defines a second safety barrier.

13. The downhole tool system of claim 9, wherein the tensile element defines a third safety barrier.

14. The downhole tool system of claim 9, further comprises a first tubular member extending from the second end portion of the second housing, wherein the firing pin is disposed at the first tubular member.

15. The downhole tool system of claim 14, further comprises a second tubular member connected to the first tubular member, wherein the initiator is disposed at the secondtubular member.

16. The downhole tool system of claim 15, further comprises a drop bar connected to the firing pin, wherein the drop bar extends from the first tubular member to the second tubular member.

17. The downhole tool system of claim 9, further comprises a ball retainer having ball bearings to hold the pull rod in position and prevent movement of the pull rod.

18. The downhole tool system of claim 9, further comprises a pin member disposed adjacent to the pull rod configured to lock components of the firing head assembly, wherein the pin member is configured to shear on operation of the setting piston.

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