CN212671625U

CN212671625U - Releasing tool

Info

Publication number: CN212671625U
Application number: CN202020728415.1U
Authority: CN
Inventors: 罗勇; 邹来方; 张燕萍; 吴千里; 何坤; 曹川�; 彭嵩; 侯福祥; 冯来; 刘志同; 陈元夫
Original assignee: China National Petroleum Corp; CNPC Engineering Technology R&D Co Ltd
Current assignee: China National Petroleum Corp; CNPC Engineering Technology R&D Co Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-03-09
Anticipated expiration: 2030-05-06

Abstract

The utility model provides a releasing tool, releasing tool includes the main casing body, go up the crossover sub, the transition casing, the locating part, the mandrel, drive division and lower crossover sub, wherein, go up the first cable channel that goes up the crossover sub, the main cable channel of the main casing body and the lower cable channel of lower crossover sub communicate in proper order, go up the last drilling fluid passageway of crossover sub, the main drilling fluid passageway of the main casing body, the supplementary drilling fluid passageway of mandrel and the lower drilling fluid passageway of crossover sub communicate in proper order, and, through the drive division, the cooperation action of mandrel and locating part, can realize the separation of the main casing body that has connected and transition casing, thereby realize the releasing function. Therefore, the releasing tool can ensure the releasing function while penetrating through the cable, and meets the use requirement of the cable type continuous pipe.

Description

Releasing tool

Technical Field

The utility model relates to an oil field exploitation technical field particularly, relates to a releasing tool.

Background

With the development of coiled tubing drilling technology, the continuous type of coiled tubing makes the cable threading of a drilling string more convenient, which provides an electric power approach for the electric control and informatization of a coiled tubing drilling tool. With the rise of coiled tubing electric control tools, the drilling process of the cabled coiled tubing is gradually improved, which puts new requirements on coiled tubing releasing tools.

The coiled tubing releasing tool needs to be thrown and pressed to achieve a releasing function, however, a cable penetrates through the middle of a coiled tubing in a cable-type coiled tubing drilling well, the existing coiled tubing releasing tool cannot achieve ball throwing through the cable-type coiled tubing, the cable of the coiled tubing needs to penetrate through the releasing tool to supply power to a tool connected to the lower portion of the releasing tool, the existing coiled tubing releasing tool is not provided with a cable penetrating structure, and therefore the existing coiled tubing releasing tool cannot be used in the cable-type coiled tubing drilling well, and the requirement for designing the releasing tool meeting the requirement for the cable-type coiled tubing is met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a releasing tool to satisfy the user demand that has cable formula coiled tubing.

In order to achieve the above object, the utility model provides a releasing tool, include: a main housing having a main cable passage and a main drilling fluid passage; an upper crossover joint disposed within the main housing, the upper crossover joint having a first upper cable passage and an upper drilling fluid passage; the transition shell is detachably connected with the main shell; the limiting piece is movably arranged on the main shell and provided with a connecting position connected with the transition shell and a separating position separated from the transition shell, the transition shell is connected with the main shell when the limiting piece is located at the connecting position, and the transition shell is separated from the main shell when the limiting piece is located at the separating position; the mandrel is movably arranged in the transition shell and provided with an auxiliary drilling fluid channel, and the mandrel is provided with a limiting position in limiting fit with the limiting piece and an avoiding position for avoiding the limiting piece, wherein the limiting piece is positioned at the connecting position when the mandrel is positioned at the limiting position, and the limiting piece is positioned at the separating position when the mandrel is positioned at the avoiding position; a drive portion disposed within the main housing, the drive portion for driving the mandrel to move within the transition housing; a lower crossover joint disposed within the transition housing, the lower crossover joint having a lower cable passage and a lower drilling fluid passage; the first upper cable channel, the main cable channel and the lower cable channel are communicated in sequence, and the upper drilling fluid channel, the main drilling fluid channel, the auxiliary drilling fluid channel and the lower drilling fluid channel are communicated in sequence.

Further, the drive portion includes the pump body, the transition casing with the oil storage chamber has between the mandrel, the pump body with the oil storage chamber intercommunication, the pump body is followed when the operation the oil storage chamber absorbs hydraulic oil and to the mandrel carries hydraulic oil, with through hydraulic oil promotes the mandrel removes.

Further, the main casing body has the oil feed passageway and the passageway of producing oil that installation cavity, interval set up, the pump body sets up in the installation cavity, the entry of the pump body passes through the oil feed passageway with oil storage cavity intercommunication, the export of the pump body with the passageway intercommunication of producing oil, the one end orientation of the passageway of producing oil the mandrel.

Further, the upper adapter has a second upper cable channel, the second upper cable channel is communicated with the installation cavity, and the driving part further includes: the motor is arranged in the mounting cavity and used for driving the pump body to operate; and the control circuit board is arranged in the mounting cavity and is used for controlling the motor.

Furthermore, the mandrel comprises a cylinder body, a first ring body and a second ring body which are arranged on the outer wall of the cylinder body at intervals, a through hole in the cylinder body is the auxiliary drilling fluid channel, and hydraulic oil output by the pump body faces to the end face of the first ring body; the first ring body, the second ring body, the inner wall of barrel and the region between the inner wall of the main casing body is for dodging the district, the removal of mandrel can make dodge the district or the second ring body with the locating part corresponds, wherein, under the second ring body with the condition that the locating part corresponds, the second ring body with the locating part butt is so that the locating part keeps in hookup location, dodge the district with under the condition that the locating part corresponds, at least a part of locating part gets into dodge in the district so that the locating part moves to the isolated position.

Further, the releasing tool further comprises: the elastic piece is arranged in the transition shell, one end of the elastic piece is abutted to the lower conversion joint, and the other end of the elastic piece is abutted to the mandrel.

Further, a part of cover of transition casing is established on the main casing body, the main casing body has the card hole, the locating part is movably worn to establish in the card hole, the draw-in groove has on the inner wall of transition casing, the one end of locating part be used for with the draw-in groove joint.

Further, one end of the mandrel is movably arranged in the main drilling fluid channel in a penetrating mode, and the other end of the mandrel is movably arranged in the lower drilling fluid channel in a penetrating mode.

Further, the releasing tool further comprises: the upper joint is connected with the end part of the main shell, one part of the upper conversion joint is arranged in the upper joint in a penetrating way, and the upper drilling fluid channel is communicated with a cavity in the upper joint; and the first cable plug is positioned in the cavity of the upper joint and is connected with the end part of the upper adapter.

Further, the releasing tool further comprises: the lower joint is connected with the end part of the transition shell, one part of the lower conversion joint is arranged in the lower joint in a penetrating mode, and the lower drilling fluid channel is communicated with a cavity in the lower joint; and the second cable plug is positioned in the cavity of the lower joint and is connected with the end part of the lower adapter.

Use the technical scheme of the utility model, a releasing tool is provided, releasing tool includes the main casing body, go up the crossover sub, the transition casing, the locating part, the mandrel, drive division and crossover sub down, wherein, go up the cable channel on the first of crossover sub, the main cable channel of the main casing body and the lower cable channel of crossover sub communicate in proper order down, go up the last drilling fluid channel of crossover sub, the main drilling fluid channel of the main casing body, the assistance drilling fluid channel of mandrel and the lower drilling fluid channel of crossover sub communicate in proper order down, and, through the drive division, the cooperation action of mandrel and locating part, can realize the separation of the main casing body and the transition casing that has connected, thereby realize releasing function. Therefore, the releasing tool can ensure the releasing function while penetrating through the cable, and meets the use requirement of the cable type continuous pipe.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a releasing tool provided by an embodiment of the present invention;

FIG. 2 shows another schematic view of the releasing tool of FIG. 1;

FIG. 3 shows a partial enlarged view of FIG. 2;

FIG. 4 shows a schematic view of the main housing of FIG. 1;

FIG. 5 shows a schematic view of the up-conversion joint of FIG. 1;

fig. 6 shows a schematic view of the lower adapter of fig. 1.

Wherein the figures include the following reference numerals:

10. a main housing; 11. a main cable channel; 12. a primary drilling fluid passage; 13. a mounting cavity; 14. an oil inlet channel; 15. an oil outlet channel; 17. a clamping hole; 18. a keyway; 20. an upper crossover sub; 21. a first upper cable channel; 22. an upper drilling fluid channel; 23. a second upper cable channel; 30. a transition housing; 31. an oil storage chamber; 32. a card slot; 40. a limiting member; 50. a mandrel; 51. a barrel; 52. a first ring body; 53. a second ring body; 54. an auxiliary drilling fluid channel; 55. an avoidance zone; 60. a drive section; 61. a pump body; 62. a motor; 63. a control circuit board; 70. a lower crossover sub; 71. a lower cable channel; 72. a downhole fluid channel; 81. an elastic member; 82. an upper joint; 83. a first cable plug; 84. a lower joint; 85. a second cable plug; 86. a key block; 87. a one-way valve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a releasing tool, including: a main housing 10, the main housing 10 having a main cable passage 11 and a main drilling fluid passage 12; an upper adaptor 20 disposed within the main housing 10, the upper adaptor 20 having a first upper cable passage 21 and an upper drilling fluid passage 22; a transition housing 30 detachably coupled to the main housing 10; a limiting member 40 movably disposed on the main housing 10, wherein the limiting member 40 has a connection position connected to the transition housing 30 and a separation position separated from the transition housing 30, wherein the transition housing 30 is connected to the main housing 10 when the limiting member 40 is at the connection position, and the transition housing 30 is separated from the main housing 10 when the limiting member 40 is at the separation position; a mandrel 50 movably disposed within the transition housing 30, the mandrel 50 having an auxiliary drilling fluid passage 54, the mandrel 50 having a limiting position in limiting engagement with the limiting member 40 and an avoidance position to avoid the limiting member 40, wherein the limiting member 40 is in the connected position when the mandrel 50 is in the limiting position and the limiting member 40 is in the disconnected position when the mandrel 50 is in the avoidance position; a driving part 60 disposed in the main housing 10, the driving part 60 for driving the spindle 50 to move in the transition housing 30; a lower crossover joint 70 disposed within transition housing 30, lower crossover joint 70 having a lower cable passage 71 and a lower drilling fluid passage 72; the first upper cable channel 21, the main cable channel 11 and the lower cable channel 71 are sequentially communicated, and the upper drilling fluid channel 22, the main drilling fluid channel 12, the auxiliary drilling fluid channel 54 and the lower drilling fluid channel 72 are sequentially communicated.

Use the technical scheme of the utility model, a releasing tool is provided, releasing tool includes main casing body 10, go up conversion joint 20, transition casing body 30, locating part 40, mandrel 50, drive division 60 and lower conversion joint 70, wherein, cable channel 21 on the first of going up conversion joint 20, main casing body 10's main cable channel 11 and lower conversion joint 70's lower cable channel 71 communicate in proper order, go up conversion joint 20's last drilling fluid channel 22, main casing body 10's main drilling fluid channel 12, mandrel 50's assistance drilling fluid channel 54 and lower conversion joint 70's lower drilling fluid channel 72 communicate in proper order, and, through drive division 60, mandrel 50 and locating part 40's cooperation action, can realize the separation of main casing body 10 and transition casing body 30 connected, thereby realize the function of releasing. Therefore, the releasing tool can ensure the releasing function while penetrating through the cable, and meets the use requirement of the cable type continuous pipe.

In the present embodiment, the driving portion 60 includes a pump body 61, the transition housing 30 and the spindle 50 have an oil storage chamber 31 therebetween, the pump body 61 is communicated with the oil storage chamber 31, and the pump body 61 absorbs hydraulic oil from the oil storage chamber 31 and sends hydraulic oil to the spindle 50 during operation, so as to push the spindle 50 to move by the hydraulic oil. Therefore, the hydraulic oil can be conveyed through the pump body 61, the mandrel 50 is driven to move through the hydraulic oil, the releasing function is realized, the transmission is stable and reliable, and the structure is compact.

In this embodiment, the main housing 10 has a mounting cavity 13, an oil inlet channel 14 and an oil outlet channel 15, the pump body 61 is disposed in the mounting cavity 13, an inlet of the pump body 61 is communicated with the oil storage cavity 31 through the oil inlet channel 14, an outlet of the pump body 61 is communicated with the oil outlet channel 15, and one end of the oil outlet channel 15 faces the spindle 50. This facilitates the oil path arrangement and the flow of the hydraulic oil.

Optionally, the releasing tool further comprises a one-way valve 87, the one-way valve 87 being provided at the outlet of the pump body 61. The one-way valve 87 is provided to ensure one-way flow of hydraulic oil to prevent backflow to drive the movement of the mandrel 50.

In this embodiment, the upper conversion joint 20 has a second upper cable passage 23, the second upper cable passage 23 communicates with the mounting chamber 13, and the driving part 60 further includes: the motor 62 is arranged in the mounting cavity 13, and the motor 62 is used for driving the pump body 61 to operate; and the control circuit board 63 is arranged in the mounting cavity 13, and the control circuit board 63 is used for controlling the motor 62. This facilitates control of the pump body 61. Moreover, the arrangement of the cable can be facilitated by the above arrangement.

In this embodiment, the mandrel 50 includes a cylinder 51, and a first ring 52 and a second ring 53 that are disposed on the outer wall of the cylinder 51 at intervals, a through hole in the cylinder 51 is an auxiliary drilling fluid channel 54, and hydraulic oil output by the pump body 61 faces the end face of the first ring 52; the area between the first ring 52, the second ring 53, the inner wall of the cylinder 51 and the inner wall of the main housing 10 is an avoidance area 55, and the movement of the mandrel 50 can make the avoidance area 55 or the second ring 53 correspond to the limiting member 40, wherein under the condition that the second ring 53 corresponds to the limiting member 40, the second ring 53 abuts against the limiting member 40 to keep the limiting member 40 at the connection position, and under the condition that the avoidance area 55 corresponds to the limiting member 40, at least a part of the limiting member 40 enters the avoidance area 55 to make the limiting member 40 move to the separation position. With this solution, the movement of the spindle 50 can be matched with the position-limiting member 40, so that the movement of the position-limiting member 40 from the connection position to the separation position is realized, and thus, after the main housing 10 is pulled, the separation of the main housing 10 and the transition housing 30 can be realized.

Optionally, the second ring 53 has a through hole communicating the relief area 55 with the reservoir 31 to provide pressure equalization to ensure movement of the mandrel 50.

Alternatively, the thickness of the limiting member 40 is greater than the depth of the relief area 55, which prevents the limiting member 40 from being separated from the main housing 10, thereby preventing the spindle 50 from being separated from the main housing 10.

Optionally, a limit step is provided in the main housing 10, and the limit step is disposed corresponding to the first ring 52, so as to limit the axial direction of the spindle 50.

In this embodiment, the releasing tool further comprises: and the elastic piece 81, the elastic piece 81 is arranged in the transition shell 30, one end of the elastic piece 81 is abutted with the lower conversion joint 70, and the other end of the elastic piece 81 is abutted with the mandrel 50. The elastic member 81 can apply an elastic force to the spindle 50, so that the spindle 50 maintains a position-limiting state of the position-limiting member 40 during normal operation, thereby preventing the position-limiting member 40 from moving and improving reliability. Optionally, the elastic member 81 is sleeved on the cylinder 51, and the elastic member 81 abuts against the second ring 53.

In this embodiment, a part of the transition housing 30 is sleeved on the main housing 10, the main housing 10 has a card hole 17, the limiting member 40 is movably disposed in the card hole 17, the inner wall of the transition housing 30 has a card slot 32, and one end of the limiting member 40 is used for being connected with the card slot 32 in a clamping manner. Thus, the stop member 40 is engaged with the card hole 17 and the card slot 32, so that the main housing 10 and the transition housing 30 can be reliably connected.

Optionally, the end of the limiting member 40 is in a tooth-shaped structure, and the bottom wall of the slot 32 is in a tooth-shaped structure, so that the connection strength can be improved, and the limiting member 40 can be pulled out of the slot 32 by an external force through the guiding of the inclined planes on the two tooth-shaped structures.

Optionally, there is a keyway 18 between the transition housing 30 and the main housing 10, and the releasing tool further comprises a key block 86, the key block 86 being disposed in the keyway 18 to limit the circumference of the transition housing 30 and the main housing 10.

In this embodiment, one end of the mandrel 50 is movably disposed through the main drilling fluid passage 12 and the other end of the mandrel 50 is movably disposed through the lower drilling fluid passage 72. By this arrangement, communication of the respective drilling passages can be achieved and both ends of the mandrel 50 can be guided to achieve smooth movement of the mandrel 50.

Optionally, a seal ring is provided between the mandrel 50 and the inner wall of the main drilling passage and a seal ring is provided between the mandrel and the inner wall of the lower drilling passage to improve the sealing and avoid leakage of drilling fluid.

In this embodiment, the releasing tool further comprises: an upper joint 82, wherein the upper joint 82 is connected with the end of the main shell 10, a part of the upper conversion joint 20 is arranged in the upper joint 82 in a penetrating way, and the upper drilling fluid channel 22 is communicated with the cavity in the upper joint 82; and a first cable plug 83 located in the cavity of the upper connector 82, wherein the first cable plug 83 is connected with the end of the upper conversion connector 20. This allows for easy connection to other tubing via the top sub 82. Moreover, the arrangement and connection of the cables can be facilitated by the first cable plug 83.

Optionally, the upper joint 82 is screwed to the main housing 10 with a sealing ring therebetween, an end surface of the upper joint 82 abuts against one side of the upper conversion joint 20, and a step in the main housing 10 abuts against the other side of the upper conversion joint 20 to position the upper conversion joint 20.

Further, the releasing tool further comprises: a lower sub 84, the lower sub 84 being connected to the end of the transition housing 30, a portion of the lower transition sub 70 being disposed through the lower sub 84, the lower drilling fluid passage 72 being in communication with the cavity in the lower sub 84; and a second cable plug 85 located within the cavity of the lower connector 84, the second cable plug 85 being connected to the end of the lower connector 70. This allows for easy connection to other tubing via the lower sub 84. Moreover, the arrangement and connection of the cables can be facilitated by the second cable plug 85.

Optionally, the lower joint 84 is threadedly connected to the transition housing 30 with a seal therebetween, the end face of the lower joint 84 abuts one side of the lower transition joint 70, and a step in the transition housing 30 abuts the other side of the lower transition joint 70 to position the lower transition joint 70.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A releasing tool, comprising:

a main housing (10), said main housing (10) having a main cable passage (11) and a main drilling fluid passage (12);

an upper crossover sub (20) disposed within the main housing (10), the upper crossover sub (20) having a first upper cable passage (21) and an upper drilling fluid passage (22);

a transition housing (30) detachably connected to the main housing (10);

a limiting member (40) movably arranged on the main casing (10), wherein the limiting member (40) has a connecting position connected with the transition casing (30) and a separating position separated from the transition casing (30), the transition casing (30) is connected with the main casing (10) when the limiting member (40) is at the connecting position, and the transition casing (30) is separated from the main casing (10) when the limiting member (40) is at the separating position;

a mandrel (50) movably disposed within the transition housing (30), the mandrel (50) having an auxiliary drilling fluid passage (54), the mandrel (50) having a limiting position in limiting engagement with the limiting member (40) and an avoidance position to avoid the limiting member (40), wherein the limiting member (40) is in the connection position when the mandrel (50) is in the limiting position and the limiting member (40) is in the disconnection position when the mandrel (50) is in the avoidance position;

a drive section (60) disposed within the main housing (10), the drive section (60) for driving the spindle (50) to move within the transition housing (30);

a lower crossover joint (70) disposed within the transition housing (30), the lower crossover joint (70) having a lower cable passage (71) and a lower drilling fluid passage (72);

the first upper cable channel (21), the main cable channel (11) and the lower cable channel (71) are sequentially communicated, and the upper drilling fluid channel (22), the main drilling fluid channel (12), the auxiliary drilling fluid channel (54) and the lower drilling fluid channel (72) are sequentially communicated.

2. The releasing tool according to claim 1, wherein the driving part (60) comprises a pump body (61), an oil storage chamber (31) is arranged between the transition housing (30) and the mandrel (50), the pump body (61) is communicated with the oil storage chamber (31), and the pump body (61) absorbs hydraulic oil from the oil storage chamber (31) and transmits the hydraulic oil to the mandrel (50) when in operation so as to push the mandrel (50) to move through the hydraulic oil.

3. The releasing tool according to claim 2, wherein the main housing (10) has a mounting cavity (13), an oil inlet channel (14) and an oil outlet channel (15) which are arranged at intervals, the pump body (61) is arranged in the mounting cavity (13), an inlet of the pump body (61) is communicated with the oil storage cavity (31) through the oil inlet channel (14), an outlet of the pump body (61) is communicated with the oil outlet channel (15), and one end of the oil outlet channel (15) faces the mandrel (50).

4. The releasing tool according to claim 3, wherein the upper transition joint (20) has a second upper cable passage (23), the second upper cable passage (23) communicating with the mounting cavity (13), the driving portion (60) further comprising:

the motor (62) is arranged in the mounting cavity (13), and the motor (62) is used for driving the pump body (61) to operate;

and the control circuit board (63) is arranged in the mounting cavity (13), and the control circuit board (63) is used for controlling the motor (62).

5. The releasing tool as claimed in claim 2, wherein the mandrel (50) comprises a cylinder (51) and a first ring body (52) and a second ring body (53) which are arranged on the outer wall of the cylinder (51) at intervals, the through hole in the cylinder (51) is the auxiliary drilling fluid channel (54), and the hydraulic oil output by the pump body (61) faces the end face of the first ring body (52); the first ring body (52), the second ring body (53), the inner wall of the cylinder body (51) and the inner wall of the main casing (10) are arranged in an avoiding region (55), the movement of the mandrel (50) can enable the avoiding region (55) or the second ring body (53) to correspond to the limiting member (40), wherein under the condition that the second ring body (53) corresponds to the limiting member (40), the second ring body (53) is abutted to the limiting member (40) to enable the limiting member (40) to be kept at the connecting position, and under the condition that the avoiding region (55) corresponds to the limiting member (40), at least one part of the limiting member (40) enters the avoiding region (55) to enable the limiting member (40) to move to the separating position.

6. The releasing tool of claim 1, wherein the releasing tool further comprises:

the elastic piece (81) is arranged in the transition shell (30), one end of the elastic piece (81) is abutted with the lower conversion joint (70), and the other end of the elastic piece (81) is abutted with the mandrel (50).

7. The releasing tool according to claim 1, wherein a part of the transition housing (30) is sleeved on the main housing (10), the main housing (10) is provided with a clamping hole (17), the limiting member (40) is movably arranged in the clamping hole (17) in a penetrating way, a clamping groove (32) is arranged on the inner wall of the transition housing (30), and one end of the limiting member (40) is used for being clamped with the clamping groove (32).

8. The releasing tool of claim 1, wherein one end of the mandrel (50) is movably disposed through the main drilling fluid passage (12) and the other end of the mandrel (50) is movably disposed through the lower drilling fluid passage (72).

9. The releasing tool of claim 1, wherein the releasing tool further comprises:

the upper connector (82), the upper connector (82) is connected with the end of the main shell (10), a part of the upper conversion connector (20) is arranged in the upper connector (82) in a penetrating mode, and the upper drilling fluid channel (22) is communicated with a cavity in the upper connector (82);

a first cable plug (83) located within the cavity of the upper adapter (82), the first cable plug (83) being connected to an end of the upper adapter (20).

10. The releasing tool of claim 1, wherein the releasing tool further comprises:

a lower sub (84), the lower sub (84) connected to an end of the transition housing (30), a portion of the lower crossover sub (70) disposed through the lower sub (84), the lower drilling fluid passage (72) in communication with a cavity in the lower sub (84);

a second cable plug (85) located within the cavity of the lower adapter (84), the second cable plug (85) being connected to an end of the lower adapter (70).