CN209781874U

CN209781874U - clip assembly for fixing logging cable

Info

Publication number: CN209781874U
Application number: CN201822269794.8U
Authority: CN
Inventors: 刘锐熙; 杨万虎; 赵宏伟; 朱治理; 陈洁辉; 董耀华
Original assignee: Central Plains Geophysical Log Co Of Petroleum Works Co Ltd Of China Petrochemical Industry; Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Co Ltd
Current assignee: Zhongyuan Measurement And Control Co Of Sinopec Jingwei Co ltd; Sinopec Oilfield Service Corp; Sinopec Zhongyuan Petroleum Engineering Co Ltd; Sinopec Jingwei Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-13
Anticipated expiration: 2028-12-29

Abstract

The utility model provides a checkpost subassembly for fixed logging cable, including two mutual checkposts to pasting with pressing from both sides tight logging cable (1), two mutual seat pieces to pasting in order to form the seal receptacle, and gland nut (5) of cover on the seal receptacle, the checkpost has the bolt hole that supplies to step up bolt (8) and pass, gland nut (5) have the inlet wire breach, the ring chamber between the inner wall of gland nut (5) and the surface of seal receptacle is used for holding the last end connector of preventer, gland nut (5) and the last end connector threaded connection of preventer, the surface of seal receptacle have with the flange of the flange butt on gland nut (5) inner wall, the one end of seal receptacle is connected with the lower extreme of checkpost, the other end has the seal chamber that is used for filling gland packing (4). The utility model provides a checkpost subassembly leakproofness is better, can avoid the emergence of gas leakage phenomenon in the well to reduce environmental pollution's risk effectively, and provide the safety guarantee for the field work personnel.

Description

Clip assembly for fixing logging cable

Technical Field

The utility model relates to an oil gas well production logging auxiliary assembly technical field especially relates to a checkpost subassembly for fixing logging cable.

Background

During the production process, various production wells of the oil and gas field often acquire underground data through production logging to acquire data such as stratum parameter information, production dynamic information and the like. Due to complex well conditions or other multiple reasons, abnormal conditions such as the fact that a logging cable is clamped in the well or the logging cable is clamped in a blowout prevention control head and the like can occur in the logging process, and the cable needs to be fixed on a well head by a cable clamp and then processed by a special method.

However, the cable clip used at present only plays a role in fixing the cable and does not have a sealing function, and toxic gas in the well can escape from a gap between the cable and the clip under the action of pressure in the well, so that the cable clip is selected as an adultCasualties and environmental pollution, therefore, the current cable clip is difficult to be applied to high H content₂S、CO₂and (5) logging construction of oil and gas wells.

in summary, how to improve the cable clamp to avoid the gas leakage in the well is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a checkpost subassembly for fixing logging cable, this checkpost subassembly leakproofness is better, can avoid the emergence of gas leakage phenomenon in the well to reduce environmental pollution's risk effectively, and provide the safety guarantee for the field work personnel.

In order to achieve the above object, the utility model provides a following technical scheme:

A clip assembly for securing a logging cable, comprising:

The clamp is provided with a bolt hole for a clamping bolt to pass through, and the axis of the bolt hole is vertical to the facing surface of the clamp;

The two seat sheets are mutually attached to form a sealing seat, one end of the sealing seat is provided with a hanging head connected with the lower end of the clamp, the other end of the sealing seat is provided with a sealing cavity used for filling sealing filler, a through hole for the logging cable to pass through is formed between the sealing cavity and the hanging head, and the outer surface of the sealing seat is provided with a flange;

The cover is in gland nut on the seal receptacle, the seal receptacle the hanger stretches out gland nut, just the seal receptacle the flange with be located flange butt on the gland nut inner wall, the inlet wire breach has been seted up on gland nut's the lateral wall, the one end of inlet wire breach is in along radial extension to on the flange gland nut's axle center, gland nut's inner wall with ring chamber between the surface of seal receptacle is used for holding the upper end connector of preventer, gland nut have with the external screw thread complex internal thread of upper end connector.

Preferably, in the above-described clip assembly, an end of the seal cavity adjacent to the hanging head is tapered.

preferably, in the above-mentioned card subassembly, a nylon sleeve is sleeved on the sealing seat, the nylon sleeve is located on the side of the flange far away from the hanging head, and the upper end joint of the blowout preventer is located in an annular cavity formed by the nylon sleeve and the gland nut.

preferably, in the above clip assembly, a gasket is further included at an end of the sealing seat away from the hanging head, and the gasket has a central hole through which the logging cable passes.

preferably, in the above card sub-assembly, an outer surface of the compression nut has a knurling.

Preferably, in the above card sub-assembly, an outer surface of the compression nut has a plurality of recesses for cooperating with a hook wrench.

Preferably, in the above card sub-assembly, the seat piece and the clip are of an integral structure.

Preferably, in the above card assembly, the facing surface of the clip is provided with a groove for accommodating the logging cable.

Preferably, in the above card assembly, the recess has a surface shape conforming to an outer surface of the wireline cable.

Preferably, in the clip assembly, the tool further comprises a copper sleeve sleeved with the logging cable, and the copper sleeve is installed in a containing cavity formed by the grooves of the two clips together.

according to the technical proposal, in the clip component for fixing the logging cable provided by the utility model, the two seat sheets are attached to each other to form a sealing seat, a hanging head of the sealing seat is connected with the lower end of the clamp, the lower end of the sealing seat is provided with a sealing cavity for filling sealing filler, a through hole for a logging cable to pass through is arranged between the sealing cavity and the hanging head, the sealing seat is connected to the upper end joint of the blowout preventer, the gland nut sleeved on the sealing seat is in threaded connection with the upper end joint of the blowout preventer, the pressing nut can move downwards by screwing, because the flange of the sealing seat is abutted against the flange of the pressing nut, so that the gland nut pushes the seal seat to move downwards, therefore, the sealing packing deforms under the joint extrusion of the upper end connector and the seal seat of the blowout preventer to fill the seal cavity, thereby eliminating the gap between the sealing filler and the logging cable and achieving the purpose of sealing the gas in the well. After the compression nut moves in place, the two clamps above the sealing seat clamp the logging cable, and the clamping force is provided through the clamping bolt to bear the weight of the logging cable and the downhole tool string. Therefore, the utility model provides a checkpost subassembly leakproofness is better, can avoid the emergence of gas leakage phenomenon in the well to reduce environmental pollution's risk effectively, and provide the safety guarantee for the site work personnel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a clip assembly for securing a logging cable according to an embodiment of the present invention;

FIG. 2 is a top view of the piece 5 of FIG. 1;

FIG. 3 is a front view of the piece 9 of FIG. 2;

3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 5 is a schematic view of member 6 of FIG. 1 in a split configuration;

FIG. 6 is a schematic view of the part 61 of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 6;

FIG. 8 is a schematic view of member 62 of FIG. 5;

Fig. 9 is a left side view of fig. 8.

Labeled as:

1. a logging cable; 2. a gasket; 3. a nylon sleeve; 4. sealing and filling; 5. a compression nut; 51. a pin boss; 52. a pit; 53. knurling; 6. a card body; 61. a clip; 611. bolt holes; 612. a groove; 613. a first pin hole; 62. a seat sheet; 621. sealing the cavity; 622. a second pin hole; 7. a copper sleeve; 8. tightening the bolt; 9. a security pane.

Detailed Description

For the sake of understanding, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 5, fig. 1 is a schematic diagram illustrating a clip assembly for fixing a logging cable according to an embodiment of the present invention, fig. 5 is a schematic diagram illustrating a part clip body 6 in the embodiment shown in fig. 1 in a split structure, it should be noted that, when fixing the logging cable 1, the logging cable 1 is sandwiched between two opposite clip bodies 6, therefore, in the embodiment shown in fig. 5, the clip assembly includes two clips 61 and two seat pieces 62, as can be seen from fig. 1, the two clips 61 are attached to each other to clamp the logging cable 1, the clamping force is provided by a fastening bolt 8, as shown in fig. 6 and 7, the clips 61 have bolt holes 611 for the fastening bolt 8 to pass through, and the axes of the bolt holes 611 are perpendicular to the facing surfaces of the clips 61; the two seat pieces 62 are attached to each other to form a sealing seat, one end of the sealing seat is provided with a hanging head connected with the lower end of the clip 61, as shown in fig. 7 and 9, the hanging head of the seat piece 62 is provided with a second pin hole 622 corresponding to the first pin hole 613 of the clip 61, as shown in fig. 8, the hanging head of the seat piece 62 is forked, the lower end of the clip 61 is placed in the middle of the hanging head, the first pin hole 613 and the second pin hole 622 are aligned, and then the clip 61 and the seat piece 62 are connected by a pin to obtain the clip body 6.

as can be seen from fig. 1, the other end of the sealing seat formed by the two seat sheets 62 has a sealing cavity 621 for filling the sealing filler 4, a through hole for the logging cable 1 to pass through is formed between the sealing cavity 621 and the hanging head, and the outer surface of the sealing seat has a flange.

The clip assembly includes 2 clip bodies 6, and a gland nut 5 sleeved on the seal seat, as shown in fig. 1, the suspension head of the seal seat extends out of the gland nut 5, and the flange of the seal seat abuts against the rib on the inner wall of the gland nut 5, the annular cavity between the inner wall of the gland nut 5 and the outer surface of the seal seat is used for accommodating an upper end connector (not shown in the figure) of the blowout preventer, and the gland nut 5 has an internal thread matched with the external thread of the upper end connector. The side wall of the gland nut 5 is provided with an inlet wire gap, as seen from the top view shown in fig. 2, one end of the inlet wire gap radially extends to the axis of the gland nut 5 on the flange, and the part of the inlet wire gap on the flange provides a passage for the hanging head of the sealing seat to extend out of the gland nut 5.

referring to fig. 2 and 3, since the compression nut 5 is provided with an incoming line gap, the overall rigidity of the compression nut 5 is affected, and in order to ensure safety, the two sides of the incoming line gap can be connected by a safety plate 9, for this reason, pin holders 51 are provided on the two sides of the incoming line gap, and the two ends of the safety plate 9 are connected with the pin holders 51 by pins.

Referring to fig. 1, the clip assembly is installed on the middle section of the logging cable 1, which is far away from the end of the logging cable 1, so that, in order to install the packing 4, the present embodiment designs the packing 4 into a two-piece structure, as shown in fig. 4, one half of the packing 4 is located in one card body 6, and the other half is located in the other card body 6.

The utility model provides a principle of operation of checkpost subassembly is as shown in figure 1, the last end connector threaded connection of gland nut 5 and preventer, the sealed chamber 621 of seal receptacle is stretched out slightly to the lower extreme of gland packing 4, and directly or indirectly with the last end connector butt of preventer, move through twisting and to make gland nut 5 move down, because the flange of seal receptacle and gland nut 5's flange butt, so gland nut 5 promotes the card body 6 and moves down, therefore, gland packing 4 takes place to warp under the upper end connector of preventer and the common extrusion of the card body 6, be full of sealed chamber 621, thereby eliminate the gap between gland packing 4 and the logging cable 1, reach the mesh of gas in the gland.

In order to enable the sealing packing 4 to be more strongly squeezed against the wireline cable 1 when deformed, the end of the sealing cavity 621 close to the hanging head may be tapered, as shown in fig. 1 and 8.

In order to effectively protect the sealing surface of the upper end joint of the blowout preventer, the clamp assembly can further comprise a nylon sleeve 3 sleeved on the sealing seat, as shown in fig. 1, the nylon sleeve 3 is positioned on one side of the flange far away from the hanging head, when the clamp assembly is used, the upper end joint of the blowout preventer is positioned in an annular cavity formed by the nylon sleeve 3 and the compression nut 5, and the nylon sleeve 3 prevents the sealing surface from being scratched and damaged. In order to improve the sealing effect, the clip assembly may further comprise a gasket 2 at an end of the sealing seat remote from the hanging head, the gasket 2 having a central hole through which the logging cable 1 passes. As shown in fig. 4, the present embodiment is designed such that both the nylon cover 3 and the gasket 2 are of a two-piece structure, similarly to the packing 4.

As shown in fig. 1, in order to increase the friction force to facilitate the manual screwing of the compression nut 5, the outer surface of the compression nut 5 has a knurled pattern 53 in the present embodiment.

In practice, it is often necessary to tighten the compression nut 5 with a wrench, and therefore, a plurality of recesses 52 may be provided in the outer surface of the compression nut 5 for engagement with a hook wrench, as shown in fig. 1.

In order to make the clip 61 better clamp the logging cable 1, a groove 612 for accommodating the logging cable 1 can be arranged on the opposite surface of the clip 61. Typically, the surface of the recess 612 should conform to the outer surface of the wireline 1. In this embodiment, in order to protect the cable while providing the clamping force and avoid the cable from being damaged by extrusion, in this embodiment, the clip assembly further includes a copper sleeve 7 for being sleeved with the logging cable 1, the copper sleeve 7 is installed in a containing cavity formed by the grooves 612 of the two clips 61 together, and similar to the stuffing seal 4, the copper sleeve 7 is designed to be a two-piece structure.

In specific practical application, in order to prolong service life, the parts of the clip assembly are preferably made of sulfur-resistant materials.

the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A clip assembly for securing a logging cable, comprising:

The well logging cable clamp comprises two clamps (61) which are attached to each other in an opposite mode to clamp a well logging cable (1), wherein each clamp (61) is provided with a bolt hole (611) for a clamping bolt (8) to penetrate through, and the axis of each bolt hole (611) is perpendicular to the attached surface of each clamp (61);

Two seat sheets (62) which are attached to each other to form a sealing seat, wherein one end of the sealing seat is provided with a hanging head connected with the lower end of the clamp (61), the other end of the sealing seat is provided with a sealing cavity (621) used for filling sealing filler (4), a through hole for the logging cable (1) to pass through is formed between the sealing cavity (621) and the hanging head, and the outer surface of the sealing seat is provided with a flange;

The cover is in gland nut (5) on the seal receptacle, the seal receptacle the hanging head stretches out gland nut (5), just the seal receptacle the flange with be located flange butt on gland nut (5) inner wall, the inlet wire breach has been seted up on the lateral wall of gland nut (5), the one end of inlet wire breach is in along radially extending to on the flange the axle center of gland nut (5), the inner wall of gland nut (5) with ring cavity between the surface of seal receptacle is used for holding the last end connector of preventer, gland nut (5) have with the external screw-thread fit's of last end connector internal thread.

2. The clip assembly of claim 1, wherein an end of the seal cavity (621) proximate the hanging head is tapered.

3. The clip assembly for fixing a logging cable according to claim 1, further comprising a nylon sleeve (3) sleeved on the sealing seat, wherein the nylon sleeve (3) is located on one side of the flange far away from the hanging head, and the upper end joint of the blowout preventer is located in an annular cavity formed by the nylon sleeve (3) and the gland nut (5).

4. the clip assembly of claim 1, further comprising a gasket (2) at an end of the seat remote from the hanging head, the gasket (2) having a central aperture through which the logging cable (1) passes.

5. Clip assembly for securing a logging cable according to claim 1, wherein the outer surface of the gland nut (5) has a knurled (53) pattern.

6. the clip assembly for securing a logging cable as claimed in claim 1, wherein the outer surface of the compression nut (5) has a plurality of recesses (52) for engagement with a eave wrench.

7. The clip assembly of claim 1, wherein the seat piece (62) is of unitary construction with the clip (61).

8. the clip assembly according to any one of claims 1 to 7, wherein the clip (61) has a groove (612) formed on an opposite surface thereof for receiving the logging cable (1).

9. The catch assembly of claim 8, wherein the surface of the recess (612) conforms to the outer surface of the logging cable (1).

10. The clip assembly for securing a logging cable as claimed in claim 8, further comprising a copper sleeve (7) for sleeving with the logging cable (1), the copper sleeve (7) being mounted in a receiving cavity jointly formed by the grooves (612) of the two clips (61).