CN220353841U

CN220353841U - Mechanical release device for LWF logging system

Info

Publication number: CN220353841U
Application number: CN202321957207.9U
Authority: CN
Inventors: 刘俊; 孟剑雄; 刘化友; 刘殿清; 陈增宝; 李阳兵
Original assignee: Southwest Measurement And Control Co Of Sinopec Jingwei Co ltd; Sinopec Oilfield Service Corp; Sinopec Jingwei Co Ltd
Current assignee: Southwest Measurement And Control Co Of Sinopec Jingwei Co ltd; Sinopec Oilfield Service Corp; Sinopec Jingwei Co Ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-01-16
Anticipated expiration: 2033-07-24

Abstract

The utility model relates to a mechanical release device for an LWF logging system, which relates to the technical field of petroleum logging, can cope with the logging environment of a complex well, reduce the logging operation cost, control the logging safety risk and improve the logging time and logging data acquisition rate of the complex well. The device comprises an upper joint, a transition joint, a driving motor, a locking sleeve, a connecting shaft, a transmission rod, a release mandrel, a movable block and a lower joint assembly. According to the utility model, the release mandrel can be driven to slide downwards by driving the motor to rotate. Thus, the locking sleeve and the salvaging head are fixed by the loose piece. Thereby ensuring that the lifting up of the joint, the locking sleeve and the upper part arranged in the locking sleeve can be released from the fishing head.

Description

Mechanical release device for LWF logging system

Technical Field

The utility model relates to the technical field of petroleum logging equipment, in particular to a mechanical release device for an LWF logging system.

Background

With the improvement of the petroleum exploration and development level, various complex wells such as ultra-deep wells, highly-inclined wells, horizontal wells and the like are continuously appeared, and the appearance of the complex wells brings great difficulty to conventional logging. In order to cope with the logging environment of the complex well, the logging operation cost is reduced, the logging safety risk is controlled, and the logging time efficiency and logging data acquisition rate of the complex well are improved.

That is, there is a need to develop a mechanical release device specific to LWF60 wireline release logging processes.

Disclosure of Invention

The utility model provides a mechanical release device for an LWF logging system, which can cope with the logging environment of a complex well, reduce the logging operation cost, control the logging safety risk and improve the logging time efficiency and logging data acquisition rate of the complex well.

The utility model provides a mechanical release device for an LWF logging system, comprising: an upper connector, one end of which is provided with a battery core socket which is connected with an external cable connector; one end of the transition joint is connected with the other end of the upper joint; and a drive motor disposed in the upper joint along a first direction, the drive shaft of which is adjacent to the transition joint; the locking sleeve is connected with the other end of the transition joint; the connecting shaft is penetrated in the transition joint along the first direction, and one end of the connecting shaft is clamped with the driving shaft; the fishing head is arranged in the locking sleeve; the transmission rod is penetrated in the salvaging head along the first direction, and one end of the transmission rod is clamped with the other end of the connecting shaft; the release mandrel is in threaded connection with the other end of the transmission rod far away from the transmission rod; the movable block is penetrated on the salvaging head along the second direction, and the penetrating end of the movable block is pressed and fixed on the inner wall of the locking sleeve by the release mandrel; one end of the lower joint component is connected with the locking sleeve, and the other end of the lower joint component is connected with the lower pipe column; the driving motor can drive the connecting shaft to drive the transmission rod to rotate, so that the release mandrel is driven to slide downwards, when the release mandrel slides to a position where the release mandrel is not in contact with the loose piece, the mechanical release device is in a release state, the connector is lifted up at the moment, and the locking sleeve and an upper part arranged in the locking sleeve can be separated from the fishing head.

In one embodiment, the locking sleeve is provided with a compression groove which is adapted to the exit end of the loose piece, the exit end being compressed in the compression groove.

In one embodiment, a polygonal clamping groove is formed in a driving shaft of the driving motor, one end of the connecting shaft is matched with the polygonal clamping groove and is clamped in the polygonal clamping groove, and the connecting shaft can synchronously rotate along with the driving shaft.

In one embodiment, one end of the transmission rod connected with the connecting shaft is provided with a polygonal clamping groove, the other end of the connecting shaft is matched with the polygonal clamping groove, the transmission rod is clamped in the polygonal clamping groove, and the transmission rod can synchronously rotate along with the connecting shaft.

In one embodiment, a shear pin is provided between the locking sleeve and the fishing head, the shear pin being used to fixedly connect the locking sleeve to the fishing head.

In one embodiment, the device further comprises an inner bushing assembly, wherein the inner bushing assembly is arranged in the upper joint, the driving motor is arranged in the inner bushing assembly, and the transition joint compresses and fixes the inner bushing assembly in the upper joint.

In one embodiment, an inner liner assembly includes: an inner bushing arranged in the upper joint, and a driving motor arranged in the inner bushing; and the mounting sleeve is connected with the inner bushing, and the transition joint is used for pressing and fixing the mounting sleeve in the upper joint.

In one embodiment, the mounting sleeve is provided with a sealing groove and a bearing mounting groove, the sealing groove is arranged at intervals with the bearing mounting groove, the mechanical release device further comprises a bearing, the bearing is mounted in the bearing mounting groove, the mechanical release device further comprises a sealing piece, the sealing piece is mounted in the sealing groove and used for preventing pollutants from entering the bearing mounting groove, and the sealing piece and the bearing sleeve are arranged on the periphery of the driving shaft.

In one embodiment, the inner bushing assembly further comprises a buffer sleeve, the buffer sleeve is pressed into the upper joint by the installation sleeve, the inner bushing is embedded into the installation sleeve, and the fixed end of the driving motor is arranged in the buffer sleeve.

In one embodiment, the lower joint assembly includes: one end of the lower joint is connected with the locking sleeve, and the other end of the lower joint is connected with the lower pipe column; and the centralizer is sleeved on the periphery of the lower joint.

Compared with the prior art, the utility model has the advantage that the release mandrel can be driven to slide downwards by driving the motor to rotate. Thus, the locking sleeve and the salvaging head are fixed by the loose piece. Thereby ensuring that the lifting up of the joint, the locking sleeve and the upper part arranged in the locking sleeve can be released from the fishing head. And further ensure that LWF cable can release in the complex well to deal with the logging environment of complex well, reduce logging operation cost, control logging security risk, improve logging time and logging data acquisition rate of complex well.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a mechanical release for an LWF logging system in an embodiment of the utility model.

Reference numerals:

10. an upper joint; 20. a transition joint; 30. a driving motor; 40. a locking sleeve; 50. a connecting shaft; 60. a transmission rod; 70. releasing the mandrel; 80. a movable block; 90. a safety pin; 100. an inner liner assembly; 101. an inner liner; 102. a mounting sleeve; 103. a buffer sleeve; 110. a bearing; 120. a seal; 1301. a lower joint; 1302. a centralizer; 140. and (5) fishing the head.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

It should be noted that, install the logging hanger below the well team drilling rod during logging, the well team drilling rod is carried to the end after, carry the cable again to the end with logging instrument through drilling rod water hole pump sending, take the power supply to start motor separation mode to separate cable and instrument after the end, utilize the instrument to supply power from the electrified nipple joint simultaneously, utilize instrument self lithium cell nipple joint to supply power work for the whole instrument of going into the well, after accomplishing the well logging section, static pressure reaches the electrical pressure threshold parameter that sets up in advance, the instrument is automatic to cut off the power supply. And after logging is completed, the instrument is put forward, logging data stored in the instrument are read out by the ground connection control device, and logging information is further obtained through time-depth matching processing, so that logging is completed.

As shown in fig. 1, the present utility model provides a mechanical release for an LWF logging system, which includes an upper sub 10, a transition sub 20, a drive motor 30, a locking sleeve 40, a connection shaft 50, a fishing head 140, a drive rod 60, a release mandrel 70 and a loose piece 80, and a lower sub assembly. Wherein, one end of the upper joint 10 is provided with a battery core socket which is connected with an external cable horse tap; one end of the transition joint 20 is connected with the other end of the upper joint 10; the drive motor 30 is disposed in the upper joint 10 in a first direction with its drive shaft adjacent to the transition joint 20; the locking sleeve 40 is connected with the other end of the transition joint 20; the connecting shaft 50 is arranged in the transition joint 20 in a penetrating manner along the first direction, and one end of the connecting shaft is clamped with the driving shaft; the fishing head 140 is disposed within the locking sleeve 40; the transmission rod 60 is arranged in the salvage head 140 in a penetrating way along the first direction, and one end of the transmission rod is clamped with the other end of the connecting shaft 50; the release mandrel 70 is in threaded connection with the other end of the transmission rod 60 away from the transmission rod 60; the loose piece 80 is penetrated on the salvaging head 140 along the second direction, and the penetrating end of the loose piece is pressed and fixed on the inner wall of the locking sleeve 40 by the releasing mandrel 70; one end of the lower joint assembly is connected with the locking sleeve 40, and the other end of the lower joint assembly is connected with the lower pipe column; the driving motor 30 can drive the connecting shaft 50 to drive the transmission rod 60 to rotate, so as to drive the release mandrel 70 to slide downwards, when the release mandrel 70 slides to a position not in contact with the loose piece 80, the mechanical release device is in a release state, at this time, the connector 10 is lifted up, and the locking sleeve 40 and the upper part arranged in the locking sleeve 40 can be separated from the salvaging head 140.

In the above arrangement, the release spindle 70 can be driven to slide down by the rotation of the drive motor 30. This releases the loose piece 80 from the locking sleeve 40 and the fishing head 140. Thereby ensuring that the upper joint 10 is lifted up and the locking sleeve 40 and the upper parts disposed within the locking sleeve 40 can be disengaged from the fishing head 140. Further, the LWF60 cable can be ensured to be released in the complex well so as to cope with the logging environment of the complex well, reduce the logging operation cost, control the logging safety risk and improve the logging time efficiency and logging data acquisition rate of the complex well.

The upper parts include parts such as the upper joint 10, the transition joint 20, the driving motor 30, the locking sleeve 40, and the connecting shaft 50. It is understood that the components (including the inner liner assembly 100, the bearing 110, and the seal 120) are located within the upper joint 10 and above the transition joint 20.

Specifically, as shown in fig. 1, in one embodiment, the locking sleeve 40 is provided with a compression groove that mates with the exit end of the loose piece 80, which compresses within the compression groove.

In the above arrangement, the pressing groove is arranged to be matched with the penetrating end, so that the penetrating end of the movable block 80 can be pressed into the pressing groove. Thereby ensuring that the release mandrel 70 is better pressed firmly against the inner wall of the locking sleeve 40

Specifically, as shown in fig. 1, in one embodiment, a polygonal slot is disposed on a driving shaft of the driving motor 30, one end of the connecting shaft 50 is adapted to the polygonal slot, and is clamped in the polygonal slot, so that the connecting shaft 50 can rotate synchronously with the driving shaft.

Specifically, in one embodiment, a hexagonal clamping groove is provided on the drive shaft of the drive motor 30.

In the above arrangement, the hexagonal clamping groove is matched with the hexagonal on one end of the connecting shaft 50, so as to realize synchronous rotation of the connecting shaft 50 and the driving shaft. Thereby ensuring that the mechanical release device is functioning properly.

Specifically, as shown in FIG. 1, in one embodiment, a shear pin 90 is disposed between the locking sleeve 40 and the fishing head 140, the shear pin 90 being used to fixedly connect the locking sleeve 40 and the fishing head 140.

Specifically, as shown in fig. 1, in one embodiment, the mechanical release device further includes an inner bushing assembly 100, the inner bushing assembly 100 is disposed within the upper joint 10, the drive motor 30 is disposed within the inner bushing assembly 100, and the transition joint 20 compressively secures the inner bushing assembly 100 within the upper joint 10.

Specifically, as shown in FIG. 1, in one embodiment, an inner bushing assembly 100 includes an inner bushing 101 and a mounting sleeve 102. Wherein the inner bushing 101 is disposed in the upper joint 10, and the driving motor 30 is disposed in the inner bushing 101; the mounting sleeve 102 is connected with the inner bushing 101, and the transition joint 20 compresses and fixes the mounting sleeve 102 in the upper joint 10.

Specifically, as shown in fig. 1, in one embodiment, the mounting sleeve 102 is provided with a sealing groove and a bearing mounting groove, the sealing groove is spaced from the bearing mounting groove, the mechanical release device further includes a bearing 110, the bearing 110 is mounted in the bearing mounting groove, the mechanical release device further includes a sealing member 120, the sealing member 120 is mounted in the sealing groove for preventing contaminants from entering the bearing mounting groove, and the sealing member 120 and the bearing 110 are sleeved on the outer circumference of the driving shaft.

Specifically, as shown in fig. 1, in one embodiment, the inner bushing assembly 100 further includes a buffer sleeve 103, the buffer sleeve 103 is pressed by the mounting sleeve 102 into the upper joint 10, the inner bushing 101 is embedded in the mounting sleeve 102, and the fixed end of the driving motor 30 is disposed in the buffer sleeve 103.

Specifically, as shown in fig. 1, in one embodiment, the lower joint assembly includes a lower joint 1301 and a centralizer 1302. One end of the lower joint 1301 is connected with the locking sleeve 40, and the other end of the lower joint 1301 is connected with a lower pipe column; centralizer 1302 is fitted over the outer circumference of lower sub 1301.

The principle of operation of the mechanical release device of the present utility model is described below:

the upper end core socket of the upper joint is connected with the cable horse head, the male head of the lower joint core of the releaser (mechanical releasing device) is connected with the underground logging instrument in a circuit and a mechanical way, when the release is carried out, the ground power supply panel supplies power to the motor assembly (driving motor), the driving shaft of the driving motor rotates to drive the transmission rod to rotate, the transmission rod rotates to enable the release mandrel to move downwards, the salvaging head and the release sleeve (locking sleeve) are separated, then the upper part of the releaser is lifted from the water hole of the drilling tool by the lifting cable to the ground, the lower part of the releaser and the logging instrument are left in the underground, and the lifting drilling tool starts logging.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A mechanical release device for an LWF logging system, comprising:

an upper connector (10), one end of which is provided with a battery core socket which is connected with an external cable horse tap; and

a transition joint (20) one end of which is connected to the other end of the upper joint (10); and

a drive motor (30) arranged in the upper joint (10) along a first direction, the drive shaft of which is close to the transition joint (20); and

a locking sleeve (40) connected with the other end of the transition joint (20); and

the connecting shaft (50) is penetrated in the transition joint (20) along the first direction, and one end of the connecting shaft is clamped with the driving shaft; and

a fishing head (140) disposed within the locking sleeve (40); and

the transmission rod (60) is penetrated in the salvaging head (140) along the first direction, and one end of the transmission rod is clamped with the other end of the connecting shaft (50); and

the release mandrel (70) is in threaded connection with the other end of the transmission rod (60) far away from the transmission rod (60);

the movable block (80) is penetrated on the salvaging head (140) along the second direction, and the penetrating end of the movable block is pressed and fixed on the inner wall of the locking sleeve (40) by the releasing mandrel (70);

a lower joint assembly, one end of which is connected with the locking sleeve (40), and the other end of which is connected with a lower pipe column;

wherein, driving motor (30) can drive connecting axle (50) drive transfer line (60) is rotatory, thereby drives release dabber (70) slide downwards, when release dabber (70) slide to the position that does not contact with loose piece (80), mechanical release is in the release state, lifts at this moment upper joint (10), locking sleeve (40) and the upper part that sets up in locking sleeve (40) can follow salvage head (140).

2. The mechanical release device for an LWF logging system according to claim 1, characterized in that the locking sleeve (40) is provided with a compression groove, which is adapted to the exit end of the loose piece (80), which is compressed in the compression groove.

3. The mechanical release device for the LWF logging system according to claim 1, wherein a polygonal clamping groove is arranged on a driving shaft of the driving motor (30), one end of the connecting shaft (50) is matched with the polygonal clamping groove, the connecting shaft (50) is clamped in the polygonal clamping groove, and the connecting shaft can synchronously rotate along with the driving shaft.

4. A mechanical release device for an LWF logging system according to claim 3, wherein a polygonal clamping groove is arranged at one end of the transmission rod (60) connected with the connecting shaft (50), the other end of the connecting shaft (50) is matched with the polygonal clamping groove, the transmission rod (60) is clamped in the polygonal clamping groove, and the transmission rod (60) can synchronously rotate along with the connecting shaft (50).

5. The mechanical release device for an LWF logging system according to claim 1, characterized in that a shear pin (90) is arranged between the locking sleeve (40) and the fishing head (140), the shear pin (90) being used for fixedly connecting the locking sleeve (40) and the fishing head (140).

6. The mechanical release device for an LWF logging system of claim 1, further comprising an inner liner assembly (100), the inner liner assembly (100) being disposed within the upper sub (10), the drive motor (30) being disposed within the inner liner assembly (100), the transition sub (20) compressively securing the inner liner assembly (100) within the upper sub (10).

7. The mechanical release device for an LWF logging system of claim 6, wherein the inner liner assembly (100) comprises:

an inner bushing (101) disposed within the upper joint (10), the drive motor (30) being disposed within the inner bushing (101); and

and the mounting sleeve (102) is connected with the inner bushing (101), and the transition joint (20) is used for tightly fixing the mounting sleeve (102) in the upper joint (10).

8. The mechanical release device for an LWF logging system, according to claim 7, characterized in that the mounting sleeve (102) is provided with a sealing groove and a bearing mounting groove, the sealing groove is arranged at a distance from the bearing mounting groove, the mechanical release device further comprises a bearing (110), the bearing (110) is mounted in the bearing mounting groove, the mechanical release device further comprises a sealing member (120), the sealing member (120) is mounted in the sealing groove for preventing contaminants from entering the bearing mounting groove, and the sealing member (120) and the bearing (110) are sleeved on the periphery of the driving shaft.

9. The mechanical release device for an LWF logging system, according to claim 7, wherein the inner liner assembly (100) further comprises a buffer sleeve (103), the mounting sleeve (102) compresses the buffer sleeve (103) within the upper sub (10), the inner liner (101) is embedded within the mounting sleeve (102), and the fixed end of the drive motor (30) is disposed within the buffer sleeve (103).

10. The mechanical release device for an LWF logging system of claim 1, wherein the lower joint assembly comprises:

a lower joint (1301) having one end connected to the locking sleeve (40), the other end of the lower joint (1301) being connected to the lower string; and

and the centralizer (1302) is sleeved on the periphery of the lower joint (1301).