CN212985142U

CN212985142U - Planetary gear back-off device

Info

Publication number: CN212985142U
Application number: CN202021428364.7U
Authority: CN
Inventors: 杨利强; 吴建; 董黎明; 苗同勇; 杨民进; 张铁军; 王书; 郭麟
Original assignee: Pipe Tool Technical Service Center Of Sinopec Shengli Petroleum Engineering Co ltd; Sinopec Oilfield Service Corp; Sinopec Shengli Petroleum Engineering Corp
Current assignee: Pipe Tool Technical Service Center Of Sinopec Shengli Petroleum Engineering Co ltd; Sinopec Oilfield Service Corp; Sinopec Shengli Petroleum Engineering Corp
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-04-16
Anticipated expiration: 2030-07-20

Abstract

The invention provides a planetary gear back-off device which comprises an input device, wherein the input device comprises an upper joint used for connecting an external drill rod and a mandrel linked with the upper joint, and the mandrel is sleeved with an anchoring device, a reversing back-off device and a clutch self-locking device from top to bottom; in the fishing operation of the fish, the upper joint and the lower joint are required to synchronously rotate in the same direction, and the anchoring block does not extend out of the sleeve at the moment; during the back-off operation, to throwing ball, annotating liquid in the back-off ware, overcome the spring force and make separation and reunion axle and separation and reunion cover break away from, the separation and reunion axle gets into the keyway of lower clutch, when not salvaging the operation, can realize the synchronous rotation of top connection and lower clutch for back-off ware and the fish that falls that need salvage are in the same place through the screw assembly. The upper joint and the lower joint rotate reversely by means of the planetary gears. The clutch shaft and the clutch shaft are separated by ball throwing and liquid injection, so that the operation of back-off and fishing the fish is realized.

Description

Planetary gear back-off device

Technical Field

The invention relates to the field of equipment for fishing fish in oil field well workover, in particular to a planetary gear back-off device.

Background

In recent years, with the development of oil and gas exploration and development, particularly in the later period of oil well exploitation, production increasing measures need to be implemented, the accident that a pipe column is blocked often occurs in the implementation process of the production increasing measures, when the pipe column is blocked, the extraction work is very complicated and difficult, and the pipe column is sometimes difficult to play a role by using the existing fishing tools such as a fishing barrel, a male cone and a female cone.

At present, common processing measures for the pipe column to block include cutting the position of a blocking point, blasting and loosening technologies and the like, but the technologies have great limitation in the actual operation process.

Therefore, the research and development of the planetary gear back-off device for realizing the quick and efficient fishing of the fallen fish in the oil well is particularly urgent.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a planetary gear back-off device which realizes back-off by matching an inner gear with a planetary gear to enable the rotation directions of an upper joint and a lower joint to be opposite, so that the final work of fishing out fish is completed. The technical scheme is as follows:

a planetary gear back-off device comprises an upper joint, a torque ring, a semicircular sleeve, a thrust bearing seat, a thrust bearing, a thrust ball bearing, a thrust bearing positioning seat, an anchoring cylinder, an anchoring block, an anchoring cylinder pressing strip, a mandrel, an upper planetary wheel seat, a gear seat fixing ring, a self-lubricating bearing, a planetary wheel, an inner gear, a lower gear seat, a conical thrust bearing, a supporting ring, a nut, a connecting sleeve, a clutch sleeve, a deep groove ball bearing, a clutch shaft, a lower joint, a ball, an inner hexagonal screw, a sealing ring, a bottom spring and a piston spring.

Preferably, the input structure is connected with an external drill rod and matched with the external drill rod to transmit torque to the mandrel, and the input device comprises: an upper joint, a torque ring, a semicircular sleeve, a thrust bearing seat, a thrust bearing positioning seat, a mandrel, an inner hexagon screw and a sealing ring, a through hole is formed in the center of the upper joint, the upper part of the torque ring is arranged at the lower part of the upper joint, the cylindrical wall of the upper joint is provided with a throttling hole, the mandrel and the lower part of the upper joint are assembled together through threaded connection, the first shaft shoulder of the mandrel is propped against the second step on the inner side of the upper joint, the upper part of the mandrel is connected with the inner wall of the torque ring through a spline, the lower part of the torque ring is provided with a semicircular sleeve, a thrust bearing seat is arranged at the lower part of the semicircular sleeve, a thrust bearing is arranged in an inner hole of the thrust bearing seat and on the outer wall of the mandrel, the shaft shoulder of the thrust bearing positioning seat is propped against one end of the thrust bearing seat, the semicircular sleeves are of split structures and are connected through the hexagon socket head cap screws, and a gap of 1mm is formed between the two semicircular sleeves.

Preferably, the anchoring device comprises: anchor section of thick bamboo, anchor piece, anchor section of thick bamboo layering, socket head cap screw, sealing washer, piston spring, dress on the anchor section of thick bamboo upper portion is in the lower part of thrust bearing location, anchor section of thick bamboo design has 12 piston holes and is equipped with in the anchor piece, anchor section of thick bamboo layering passes through socket head cap screw M dress is in the outside layering inslot of anchor section of thick bamboo, anchor piece external design has the tooth, and the design is cylindrical curved surface with the sleeve pipe contact surface, and the middle design has the spring mounting hole, piston spring dress is in the spring mounting hole of anchor piece, anchoring device can realize the anchoring operation, past promptly after the dabber hole pressurizes, the anchor piece is ejecting, pushes up the cover tube inner wall, makes the anchor section of thick bamboo is fixed.

As an optimization, the reversing and reversing device comprises: go up planet wheel seat, the solid fixed ring of gear seat, from lubricated bearing, planet wheel, internal gear, gear seat, circular cone thrust bearing, support ring, nut, adapter sleeve, deep groove ball bearing, lower clutch, bowling, sealing washer, holding screw down, go up planet wheel seat upper portion dress and be in anchoring section of thick bamboo lower part just dress is in the solid fixed ring's of gear seat hole, the solid fixed ring's of gear seat lower part is equipped with the internal gear, the internal gear pass through gear cooperation with the planet wheel dress is in the same place, the planet wheel lower part dress is in the gear seat down, be equipped with in the internal gear lower part thrust ball bearing with circular cone thrust bearing, be equipped with behind the circular cone thrust bearing the support ring, the support ring lower part is equipped with the nut, adapter sleeve upper portion is in through threaded connection on the internal gear, the adapter sleeve lower extreme is in through the screw thread dress, go up planet wheel seat 1 and be the split structure, and the design has 6 blind holes altogether, the upper portion design of gear seat has 6 blind holes down, go up the planet wheel seat with be equipped with in the blind hole of gear seat down from the lubricated bearing, the planet wheel dress is in the self-lubricated bearing, internal gear inside processing has the internal gear, and the design of lower part has the boss dress gear seat down.

Preferably, the clutch device comprises: the clutch sleeve is arranged behind the nut, the clutch sleeve is arranged in the connecting sleeve, the two ends of the clutch sleeve are respectively provided with the deep groove ball bearings, a spline is arranged in the clutch sleeve, the upper part of the clutch sleeve is connected and arranged on the mandrel through the spline, and the lower part of the clutch shaft is connected and arranged on the lower part of the clutch sleeve through the spline.

As an optimization, the sealing rings are arranged between the upper joint and the mandrel, between the thrust bearing seat and the thrust bearing positioning seat, between the thrust bearing positioning seat and the mandrel, between the anchoring cylinder and the mandrel, between the piston hole of the anchoring cylinder and the anchoring block, between the anchoring cylinder and the gear seat fixing ring, between the gear seat fixing ring and the internal gear, between the upper part of the clutch shaft and the mandrel, and between the clutch shaft and the lower joint to be matched with each other.

Preferably, one end of the upper joint and one end of the torque ring, and the lower part of the anchoring cylinder and the upper planetary wheel seat are assembled together through a jaw structure.

The invention has the beneficial effects that:

1. when the fishing tool is not used for fishing, the upper joint and the lower joint can synchronously rotate, so that the back-off device and the fish to be fished are assembled together through threads.

2. The invention realizes the reverse rotation of the upper joint and the lower joint in a planetary gear mode.

3. The invention separates the clutch shaft from the clutch shaft by ball throwing and liquid injection, thus realizing the operation of back-off and fishing the fallen fish.

4. The invention is used together with tools such as a drill rod, a fishing barrel, a male cone or a female cone and the like to realize the work of fast back-off and fishing.

Drawings

FIG. 1 is a cross-sectional view of a planetary gear inverter of the present invention;

FIG. 2 is a simplified diagram of a jaw configuration of the input device of the present invention;

FIG. 3 is a schematic diagram of the input device of the present invention;

FIG. 4 is a diagrammatic view of the construction of the anchoring device of the present invention;

FIG. 5 is a schematic view of the structure of FIG. 4 taken along line A-A;

FIG. 6 is a schematic view of a reversing device according to the invention;

FIG. 7 is a schematic view of the cross-sectional view of FIG. 6 taken along line B-B;

fig. 8 is a schematic view of the clutch device of the present invention assembled with a lower joint.

Detailed Description

For the purpose of making the objects and solutions of the embodiments of the present invention clearer, the embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, it being apparent that the described embodiments are some embodiments of the present invention, but not all embodiments, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, the reference numerals are only shown once for the same elements, and the embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, but not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

Referring to fig. 1-8, the system names are as follows: the input device 1, the anchoring device 2, the reversing device 3, the clutch device 4 and the part names are as follows: the device comprises an upper joint 11, a torque ring 12, a semicircular sleeve 13, a thrust bearing seat 14, a thrust bearing 15, a thrust bearing positioning seat 16, a mandrel 17, a hexagon socket head cap screw 18, a sealing ring 19, an anchoring cylinder 21, an anchoring block 22, an anchoring cylinder pressing strip 23, a piston spring 27, a thrust ball bearing 31, an upper star wheel seat 32, a gear seat fixing ring 33, a self-lubricating bearing 34, a planet wheel 35, an internal gear 36, a lower gear seat 37, a conical thrust bearing 38, a supporting ring 39, a nut 310, a connecting sleeve 311, a deep groove ball bearing 312, a ball injection 314, a lower joint 317, a clutch sleeve 41, a clutch shaft 42 and a bottom spring 43.

Referring to fig. 1, 2 and 3, the planetary gear back-off input system is sequentially connected with an upper joint 11 with a hollow middle, a mandrel 17, a torque ring 12, a semicircular sleeve 13, a thrust bearing seat 14, a thrust bearing 15 and a thrust bearing positioning seat 16, which are all sleeved on the mandrel 17. The upper portion of the torque ring 12 is arranged on the lower portion of the upper joint 11, the mandrel 17 and the lower portion of the upper joint 11 are assembled together through threaded connection, a first shaft shoulder of the mandrel 17 abuts against a second step on the inner side of the upper joint 11, the upper portion of the mandrel 17 is in splined connection with the inner wall of the torque ring 12, the lower portion of the torque ring 12 is provided with a semicircular sleeve 13, the lower portion of the semicircular sleeve 13 is provided with a thrust bearing seat 14, an inner hole of the thrust bearing seat 16 and the outer wall of the mandrel 17 are provided with the thrust bearing 15, a shaft shoulder of the thrust bearing positioning seat 16 abuts against one end of the thrust bearing seat 14, the semicircular sleeve 13 is of a split structure and is connected through an inner hexagonal screw 18, a gap of 1mm is formed between the two semicircular sleeves, and the lower portion of.

Referring to fig. 1, 4 and 5, the planetary gear inverted buckle anchoring device is arranged at the lower part of the input device, an anchoring cylinder 21 is sleeved on a mandrel 17, the outer wall of the anchoring cylinder 21 is provided with a hole and a groove, the anchoring cylinder 21 is provided with 12 piston holes and 3 grooves which are respectively used for installing an anchoring cylinder pressing strip 23 and an anchoring block 22, the anchoring block 22 is mainly fixed by the outer wall hole of the anchoring cylinder 21 and the anchoring cylinder pressing strip 23, the anchoring cylinder pressing strip 23 is arranged in the outer pressing strip groove of the anchoring cylinder through an inner hexagon screw 18, teeth are arranged outside the anchoring block 22, the contact surface with a sleeve is designed into a cylindrical curved surface, a spring mounting hole is arranged in the middle, a piston spring 27 is arranged in the spring mounting hole of the anchoring block, and the anchoring device can realize anchoring operation, namely, after the inner hole of the mandrel 17 is pressurized, the anchoring block 22 is ejected out to be pushed against the inner wall of the sleeve, so.

Referring to fig. 1, 5 and 6, the reversing and reversing device of the planetary gear reversing device is arranged at the lower part of the anchoring device, the lower part of the anchoring cylinder 21 and the upper star wheel base 32 are assembled together in a tooth-embedded matching mode, and the outermost part of the reversing device is sequentially provided with the upper star wheel base 32, the gear base fixing ring 33, the inner gear 36, the connecting. The upper planetary wheel seat 32 and the connecting sleeve 311, the connecting sleeve 311 and the lower joint 317 are connected by back-off threads. Inside is in order the planet wheel 35, the lower gear seat 37, the thrust ball bearing 31, the conical thrust bearing 38, the support ring 39, the support nut 310. Go up planet wheel seat 32 and cup joint on dabber 14, go up planet wheel seat 32 upper portion dress in the hole of the solid fixed ring of gear holder 33, internal gear 36 pass through the gear cooperation with planet wheel 35 is in the same place, planet wheel 35 lower part dress is in lower gear holder 37, it is split structure to go up planet wheel seat 32, and it has 6 blind holes to design altogether, lower gear holder 37's upper portion design has 6 blind holes, go up and be equipped with self-lubricating bearing 34 in planet wheel seat 31 and lower gear holder 37's the blind hole, planet wheel 35 dress is in self-lubricating bearing 34, internal gear 36 internal processing has the internal gear, the design of lower part has boss dress lower gear holder 37.

Referring to fig. 1 and 8, the planetary gear reversing clutch system is sequentially connected with a clutch sleeve 41, a clutch shaft 42 and a clutch spring 43. After the clutch sleeve 41 is arranged in the nut 310, the clutch sleeve 41 is arranged in the connecting sleeve 311, the two ends of the clutch sleeve 41 are respectively provided with the deep groove ball bearings 312, the clutch sleeve 41 is internally provided with a spline, the upper part of the clutch sleeve 41 is connected on the mandrel 17 through the spline connecting sleeve, the lower part of the clutch shaft 42 is arranged at the lower part of the clutch sleeve 41 through the spline connecting sleeve, when the ball 314 is thrown down, the clutch shaft 42 moves downwards to enter the internal spline in the lower joint 317, and then the back-off operation can be realized.

Referring to fig. 1-8, the sealing rings 19 are installed between the upper joint 11 and the mandrel 17, between the thrust bearing seat 14 and the thrust bearing locating seat 16, between the thrust bearing locating seat 16 and the mandrel 17, between the anchoring cylinder 21 and the mandrel 17, between the piston hole of the anchoring cylinder 21 and the anchoring block 22, between the anchoring cylinder 21 and the gear seat fixing ring 33, between the gear seat fixing ring 33 and the internal gear 36, between the upper portion of the clutch shaft 42 and the mandrel 17, and between the clutch shaft 42 and the lower joint 317, and are matched with each other.

The above embodiments are merely examples of the present invention, and the scope of the present invention includes but is not limited to the above embodiments of the product form and style, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

The working process and principle of the invention are as follows:

the invention relates to a planetary gear back-off device, which is a device for realizing direction change and consists of an internal gear on a mandrel and a planetary gear, wherein torque is transmitted through an inlay structure of a tooth insert and a spline structure, when the back-off device does not rotate forwards, a planetary gear seat and an anchoring cylinder are not fixed, and the transmission process of the torque is as follows: the drill rod is transmitted to the upper connector through threaded connection, the upper connector is transmitted to the torque ring through the jaw structure, the torque ring is transmitted to the mandrel through a spline, the mandrel is transmitted to the planet wheel through a gear, the planet wheel seat and the planet wheel revolve around the mandrel and drive the inner gear to rotate forwards, the inner gear is transmitted to the connecting sleeve through threaded connection, and the connecting sleeve is transmitted to the lower connector through threaded connection, so that the forward rotation is realized; when the reversing operation of the reversing device is realized, a ball is thrown into the reversing device, liquid is injected into the reversing device, the spring force is overcome to separate the clutch shaft and the clutch sleeve, the clutch shaft enters the key groove of the lower connector, and the anchoring block is popped out and embedded in the wall of the sleeve under the action of pressure to fix the anchoring cylinder and the sleeve after being salvaged, so that the planetary gear seat is fixed, the planetary gear only rotates, the planetary gear drives the inner gear to realize the reversing operation of the lower connector; during operation, the upper joint and the lower joint are required to rotate synchronously in the same direction, and the anchoring block does not extend out of the casing.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a planetary gear back-off ware, includes input device, input device is including the top connection that is used for connecting outside drilling rod and the dabber with the top connection linkage, its characterized in that, dabber top-down cover is equipped with anchoring device, switching-over back-off unit, separation and reunion self-lock device.

2. The planetary gear inverted buckle device according to claim 1, wherein the input device comprises an upper joint, a torque ring, a semicircular sleeve, a thrust bearing seat, a thrust bearing and a thrust bearing positioning seat, which are sequentially sleeved on the upper end of the mandrel, wherein the upper joint is in threaded connection with the mandrel, the torque ring is in splined connection with the mandrel, the thrust bearing positioning seat is in running fit with the mandrel, and an anchoring device is arranged below the thrust bearing seat.

3. The planetary gear inverted buckle device according to claim 2, wherein the anchoring device comprises an anchoring cylinder, an anchoring block, an anchoring cylinder pressing bar and a piston spring, wherein the anchoring cylinder is positioned below the thrust bearing seat, and a piston hole and an external pressing bar groove are formed in the side wall of the anchoring cylinder; an anchoring block is inserted in the piston hole in a sliding manner; an anchoring cylinder pressing strip is embedded in the external pressing strip groove; the piston hole is communicated with the external strip pressing groove; a spring mounting hole and a U-shaped groove are formed in the outward end of the anchoring block, the spring mounting hole penetrates through the U-shaped groove, and the U-shaped groove is formed by extending the external pressing strip groove on the anchoring block; the piston spring is inserted in the spring mounting hole.

4. A planetary gear undercutter according to claim 3, wherein the outwardly facing end surface of the anchoring block is provided with teeth.

5. The planetary gear reversing device according to claim 4, wherein the reversing device comprises an upper planetary wheel seat, a gear seat fixing ring, a self-lubricating bearing, a planetary wheel, an internal gear, a lower gear seat, a thrust ball bearing, a conical thrust bearing, a nut, a support ring, a connecting sleeve, a deep groove ball bearing, a lower joint, a pitching ball, a sealing ring and a set screw, the upper portion of the upper planetary wheel seat is arranged at the lower portion of the anchoring cylinder and arranged in an inner hole of the gear seat fixing ring, the internal gear is arranged at the lower portion of the gear seat fixing ring, the internal gear is arranged with the planetary wheel through gear matching, the lower portion of the planetary wheel is arranged in the lower gear seat, the thrust ball bearing and the conical thrust bearing are arranged in the lower portion of the internal gear, the support ring is arranged behind the conical thrust bearing, and the nut is arranged at the lower portion of, adapter sleeve upper portion is in through threaded connection dress on the internal gear, the adapter sleeve lower extreme is in through the screw dress on the lower clutch, go up planet wheel seat 1 for split structure, and the design has 6 blind holes altogether, the upper portion design of gear seat has 6 blind holes down, go up planet wheel seat with be equipped with in the blind hole of gear seat down from the lubricated bearing, the planet wheel dress is in the self-lubricated bearing, internal gear internal processing has the internal gear, and the design of lower part has the boss dress lower gear seat.

6. A planetary gear undercutter according to claim 5, wherein the clutch self-locking device comprises: the clutch sleeve is arranged behind the nut, the clutch sleeve is arranged in the connecting sleeve, the two ends of the clutch sleeve are respectively provided with the deep groove ball bearings, a spline is arranged in the clutch sleeve, the upper part of the clutch sleeve is connected and arranged on the mandrel through the spline, and the lower part of the clutch shaft is connected and arranged on the lower part of the clutch sleeve through the spline.

7. The planetary gear reversing device according to claim 6, wherein the sealing rings are mounted between the upper joint and the mandrel, between the thrust bearing seat and the thrust bearing positioning seat, between the thrust bearing positioning seat and the mandrel, between the anchoring cylinder and the mandrel, between the piston hole of the anchoring cylinder and the anchoring block, between the anchoring cylinder and the gear seat fixing ring, between the gear seat fixing ring and the internal gear, between the upper part of the clutch shaft and the mandrel, and between the clutch shaft and the lower joint to be matched with each other.

8. The planetary gear undercutter of claim 7, wherein the upper adapter end and the torque ring end, and the anchoring cylinder lower portion and the upper planetary wheel mount are all held together by a dog structure.