CN218991541U

CN218991541U - Long section sleeve damage well liner pipe patch tool

Info

Publication number: CN218991541U
Application number: CN202223069132.9U
Authority: CN
Inventors: 卜震山; 李骁伦; 訾永生; 王子豪
Original assignee: Panjin Guoyu Industrial Co ltd
Current assignee: Panjin Guoyu Industrial Co ltd
Priority date: 2022-11-19
Filing date: 2022-11-19
Publication date: 2023-05-09
Anticipated expiration: 2032-11-19

Abstract

The utility model provides a long section casing damage well liner repairing tool, and relates to the technical field of oilfield workover tools. The utility model relates to a novel long-section sleeve damage well repairing technology which is developed from practice, solves the problem of repairing a damaged sleeve of an oil well with the shortest time, the lowest price and the most reliable technology, and uses a push rod to extrude an arc-shaped clamping plate in a limiting groove on the inner wall of the oil-water well sleeve to support the arc-shaped clamping plate in the limiting groove, so that a suspension seat formed by the fact that the oil pipe descends to a preset position in the oil-water well sleeve is difficult to loose, thereby rapidly repairing the damaged part of the oil-water well sleeve and ensuring higher reliability when repairing the damaged part of the oil-water well sleeve.

Description

Long section sleeve damage well liner pipe patch tool

Technical Field

The utility model relates to the technical field of oilfield workover tools, in particular to a long-section casing damage well liner repairing tool.

Background

The large oil fields in China are in long-term continuous exploitation states, and the damage of oil-water well casings in oil areas is more serious along with the continuous deep development of the oil fields, and the damage is mostly in a long-section type or multi-section type. For a casing damaged well, the methods of tail pipe reinforcement, sidetracking well drilling, casing patch and the like are adopted. However, the existing well repairing technology cannot solve the problem of damage of the long-section sleeve of the oil well in a targeted and low-cost manner on the premise of not damaging the original perforation well section. The utility model is a novel long section casing damage well repairing tool developed from practical point of view, so as to create greater economic benefit and social benefit and serve for oil field production.

The long section casing damage well repairing technology is a process of recovering the damaged oil well by utilizing a specific well repairing technology, and can achieve simple and rapid repairing of damaged oil field casing. The utility model is a novel long-section casing damage well repairing technology developed from practical start, and solves the problem of repairing the damaged casing of the oil well by the shortest time, the lowest price and the most reliable technology.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a long-section casing damage well liner repairing tool for solving the problem of repairing the damaged casing of an oil well.

The utility model discloses a long section casing damage well liner repairing tool, which aims at achieving the following specific technical means: the utility model provides a long section cover loses well bushing pipe patch instrument, includes oil pipe, goes up expansion head and lower expansion head, go up expansion head fixed mounting in the top of oil pipe, search for lower expansion head fixed mounting in the below of oil pipe, the top of oil pipe is provided with the top, the outside of going up expansion head is provided with the sealer, the outside of lower expansion head is provided with down the sealer, upward be provided with the top board that is located oil pipe between expansion head and the lower expansion head, the below correspondence of top board is provided with the holding down plate, top board and holding down plate both sides are provided with the chucking board that is located the oil pipe outside.

Preferably, a bracket positioned in the oil pipe is fixedly arranged between the upper pressing plate and the lower pressing plate, and a rotating shaft is fixedly arranged in the middle of the bracket.

Preferably, the upper pressing plate and the lower pressing plate are in rotary connection with one end, close to the bracket, of the rotating shaft, and are in L-shaped splicing arrangement.

Preferably, through holes are formed in the side walls of the upper pressing plate, the lower pressing plate and the support, a limiting groove is formed in the outer wall of one side, close to the clamping plate, of the oil pipe, and the clamping plate is slidably connected in the limiting groove.

Preferably, the pressure spring is fixedly connected to the inner wall of the limit groove, and one end of the clamping plate in the limit groove is fixedly connected with the pressure spring.

Preferably, the clamping plate is in an arc-shaped arrangement, and one side, away from the limiting groove, of the clamping plate is fixedly connected with a protruding block.

Preferably, a sliding sleeve is fixedly arranged on the inner wall of the limiting groove, the side end of the sliding sleeve extends into the oil pipe, a sliding groove is formed in one side, close to the sliding sleeve, of the lower pressing plate, and a push rod is fixedly connected to one side, close to the sliding sleeve, of the clamping plate.

Preferably, the push rod is in sliding connection in the sliding sleeve, the push rod is close to sliding sleeve one end fixedly connected with and is located the slider of spout, slider and spout sliding connection.

The beneficial effects are that:

1. the hydraulic cylinder arranged in the oil pipe generates downward thrust, the pressure of the pipe cavity in the oil pipe gradually rises, so that the pressure in the oil pipe presses the upper pressing plate downwards, the upper pressing plate rotates on the rotating shaft after being pressed by the downward pressure, the lower pressing plate is opened to two sides downwards, when the sliding blocks in the sliding grooves on the two sides are pushed outwards by the lower pressing plate, the sliding blocks slide in the sliding grooves to push the push rod outwards, the push rod presses the arc clamping plate in the limiting groove to be supported on the inner wall of the oil-water well sleeve, the oil pipe is lowered to a suspended seat formed at a preset position in the oil-water well sleeve, looseness is not easy to occur, the damaged part of the oil-water well sleeve is quickly repaired, and the reliability of the damaged part of the oil-water well sleeve is higher when the damaged part is repaired.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic cross-sectional view of the front structure of the oil pipe according to the present utility model.

Fig. 3 is a schematic view of a clamping plate structure in the present utility model.

Fig. 4 is an enlarged view of fig. 2A according to the present utility model.

In fig. 1 to 4, the correspondence between the component names and the reference numerals is: the oil pipe-sealing device comprises an oil pipe-1, an upper joint-101, an upper expansion head-2, an upper sealer-21, an upper pressing plate-3, a lower pressing plate-31, a rotating shaft-4, a bracket-41, a limit groove-5, a pressure spring-51, a sliding sleeve-6, a push rod-61, a clamping plate-7, a lug-71, a lower expansion head-8, a lower sealer-81, a sliding groove-9 and a sliding block-91.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

As shown in fig. 1 to 4: a long section sleeve damage well liner repairing tool comprises an oil pipe 1, an upper expansion head 2 and a lower expansion head 8, wherein the upper expansion head 2 is fixedly arranged above the oil pipe 1, the lower expansion head 8 is fixedly arranged below the oil pipe 1, an upper joint 101 is fixedly arranged above the oil pipe 1, the upper joint 101 is in butt joint with a corresponding repairing tool, an upper sealer 21 is arranged outside the upper expansion head 2, a lower sealer 81 is arranged outside the lower expansion head 8, when the oil pipe 1 is put into an oil-water well sleeve to repair damage, a hydraulic cylinder is arranged above the oil pipe 1 after the oil pipe 1 is lowered to a preset depth, downward thrust is generated through the hydraulic cylinder, the pressure of a pipe cavity inside the oil pipe 1 is gradually increased along with the increase of the hydraulic cylinder thrust, when a certain pressure value is reached, a shearing pin arranged below is sheared, so that a cylinder sleeve arranged inside and a cylinder rod arranged correspondingly are subjected to relative motion, under the action of force, the upper expansion head 2 and the lower expansion head 8 respectively squeeze and expand the upper sealer 21 and the lower sealer 81, so that a closed groove type sealing belt arranged on the upper sealer 21 and the lower sealer 81 is tightly inlaid with an oil-water well sleeve, and continuously pressurized, a multi-petal shear wall structure of a shear ring of the upper expansion head and the lower expansion head and the tail of the lower expansion head interact, the multi-petal shear wall is sheared, a suspension seat is formed at a preset position by correspondingly installing a tool for releasing pressure, a clamping plate 7 is installed between the upper expansion head 2 and the lower expansion head 8, the clamping plate 7 is installed on the outer wall of an oil pipe 1, an upper pressing plate 3 positioned between the clamping plates 7 is installed inside the oil pipe 1, a lower pressing plate 31 is installed below the upper pressing plate 3, when the upper pressing plate 3 is pressed in the oil pipe 1, the upper pressing plate 3 is opened downwards to drive the lower pressing plate 31 to be opened downwards, thereby make holding down plate 31 release chucking board 7 to both sides extension, make its oil pipe 1 descend to the intraductal predetermined depth of oil-water well sleeve, extend the extrusion to both sides on the sleeve pipe inner wall through chucking board 7, make its chucking board 7 support the unsettled seat that the preset position formed, unsettled seat is difficult for taking place not hard up to be right, has improved the repair efficiency of oil-water well sleeve pipe damage department.

As shown in fig. 1 to 4: the oil pipe clamping device comprises an oil pipe 1, a support 41, a rotating shaft 4, a clamping plate 7, a through hole, a clamping plate 7, a limiting groove 5, a through hole, a hydraulic cylinder, a clamping plate 5 and a clamping plate 7, wherein the support 41 is fixedly arranged between the upper plate 3 and the lower plate 31 and positioned in the oil pipe 1, the support 41 is used for mounting the upper plate 3 and the lower plate 31 and limiting the upper plate 3 in the oil pipe 1, the rotating shaft 4 is fixedly arranged in the middle of the support 41, one end of the upper plate 3 and the lower plate 31 close to the support 41 are rotatably connected with the rotating shaft 4, the upper plate 3 and the lower plate 31 are spliced in an L shape, the lower plate 31 are driven to rotate when the upper plate 3 rotates on the rotating shaft 4, through holes are formed in the side walls of the upper plate 3, the lower plate 31 and the support 41, the hydraulic cylinder is arranged above the oil pipe 1, the upper plate 3 is pushed to rotate on the rotating shaft 4, the upper plate 3 is driven to open towards two sides by stretching the lower plate 31, the pressure is continuously transmitted downwards through the through hole, the limiting groove 5 is formed in the outer wall of one side of the oil pipe 1 close to the clamping plate 7, and the clamping plate 7 is slidably connected in the limiting groove 5, and the clamping plate 7 is correspondingly arranged in the limiting groove 5, so that the clamping plate 7 is clamped in the limiting groove 5 when not in use.

As shown in fig. 1 to 4: the pressure spring 51 is fixedly connected on the inner wall of the limit groove 5, the clamping plate 7 is positioned at one end in the limit groove 5 and fixedly connected with the pressure spring 51, the clamping plate 7 is pulled and contracted to limit in the limit groove 5 through rebound of the pressure spring 51, the clamping plate 7 is in arc-shaped arrangement, the clamping plate 7 is arranged corresponding to the inner wall of the oil-water well sleeve, the clamping plate 7 is enabled to be more attached when being attached to the inner wall of the oil-water well sleeve in an outward extending manner to support and limit, the supporting and limiting effect of the clamping plate 7 on the oil pipe 1 is improved, the lug 71 is fixedly connected with the side of the clamping plate 7 far away from the limit groove 5, the lug 71 is an elastic piece, when the lug 71 is extruded to support and limit on the inner wall of the oil-water well sleeve, the anti-skid effect of the lug 71 is deformed and extruded on the inner wall of the oil-water well sleeve is better, the clamping effect of the clamping plate 7 is improved, the sliding sleeve 6 is fixedly arranged on the inner wall of the limit groove 5, the side end of the sliding sleeve 6 extends into the oil pipe 1, a sliding groove 9 is formed on one side of the lower pressing plate 31 close to the sliding sleeve 6, a push rod 61 is fixedly connected to one side of the clamping plate 7 close to the sliding sleeve 6, the push rod 61 is slidably connected in the sliding sleeve 6, the sliding sleeve 6 is internally provided with a sealing sleeve, when the push rod 61 slides in the sliding sleeve 6, the push rod 61 and the sliding sleeve 6 are in interference fit, so that when the push rod 61 slides in the sliding sleeve 6, the push rod 61 cannot leak the internal pressure of the oil pipe 1, one end of the push rod 61 close to the sliding sleeve 6 is fixedly connected with a sliding block 91 positioned in the sliding groove 9, the sliding block 91 is slidably connected with the sliding groove 9, the sliding block 91 supports the clamping plate 7 in the sliding groove 9, when the lower pressing plate 31 is opened outwards, the sliding groove 9 on the side wall of the lower pressing plate 31 pushes the convex block 91 to slide inwards, when the convex block 91 slides inwards, the opened lower pressing plate 31 is pushed outwards, the push rod 61 slides in the sliding sleeve 6 to push the clamping plate 7 outwards to be pressed on the inner wall of the oil-water well sleeve to support and limit, so that the oil pipe 1 is lowered to a preset position in the oil-water well sleeve to achieve a better limiting effect.

Working principle: the upper joint 101 above the oil pipe 1 is abutted with the corresponding repair tool installed in the oil-water well casing by lowering the oil pipe to a preset position in the oil-water well casing, the downward thrust is generated by a hydraulic cylinder arranged in the oil pipe 1, the hydraulic cylinder thrust is increased along with the gradual increase of the pressure of a pipe cavity in the oil pipe 1, when a certain pressure value is reached, the cylinder sleeve arranged in the oil pipe and a cylinder rod arranged in the oil pipe are sheared by a shearing pin arranged below, so that the cylinder sleeve arranged in the oil pipe and the cylinder rod arranged in the oil pipe relatively move, under the action of force, the upper expansion head 2 and the lower expansion head 8 respectively squeeze and expand the upper sealer 21 and the lower sealer 81, the sealing groove sealing belts arranged on the upper sealer 21 and the lower sealer 81 are tightly inlaid with the well casing, when the pressure of the pipe cavity in the oil pipe 1 is gradually increased, the pressure in the oil pipe 1 is pressed downwards to press the upper pressing plate 3, the upper pressing plate 3 is pressed by the downward pressure and then rotates on the rotating shaft 4 in the middle part of the bracket 41, when the upper pressing plate 3 drives the lower pressing plate 31 to open downwards at two sides, so that when the lower pressing plate 31 pushes the sliding blocks 91 in the sliding grooves 9 at two sides outwards, the sliding blocks 91 push the push rod 61 to move outwards when sliding in the sliding grooves 9, when the push rod 61 slides in the sliding sleeve 6, the push rod 61 presses the clamping plate 7 in the limiting groove 5 to be supported on the inner wall of the oil-water well sleeve, the convex block 71 on the outer side of the clamping plate 7 presses the inner wall of the oil-water well sleeve to prevent slipping, the oil pipe 1 is lowered to a suspension seat formed at a preset position in the oil-water well sleeve, the quick repair of the damaged part of the oil-water well sleeve is realized, after the pressure of a hydraulic cylinder arranged in the oil pipe 1 is released, the upper pressing plate 3 loses pressure extrusion in the oil pipe 1, when the pressure spring 51 in the limiting groove 5 rebounds to move the clamping plate 7 outwards, the clamping plate 7 pushes the push rod 61 in the sliding sleeve 6, therefore, the clamping plate 7 is driven by the pressure spring 51 to be accommodated in the limiting groove 5, so that the oil pipe 1 of the clamping plate is taken out of the oil-water well sleeve more conveniently.

Claims

1. The utility model provides a well bushing pipe patch instrument is damaged to long section cover, includes oil pipe (1), goes up expansion head (2) and lower expansion head (8), go up expansion head (2) fixed mounting in the top of oil pipe (1), search for in the Su and expand head (8) fixed mounting in the below of oil pipe (1), the top of oil pipe (1) is provided with top connection (101), its characterized in that: the outside of going up expansion head (2) is provided with sealer (21), the outside of lower expansion head (8) is provided with sealer (81) down, be provided with upper plate (3) that are located in oil pipe (1) between upper expansion head (2) and lower expansion head (8), the below of upper plate (3) corresponds and is provided with holding down plate (31), upper plate (3) and holding down plate (31) both sides are provided with chucking board (7) that are located oil pipe (1) outside.

2. The long length casing string patch tool of claim 1, wherein: a bracket (41) positioned in the oil pipe (1) is fixedly arranged between the upper pressing plate (3) and the lower pressing plate (31), and a rotating shaft (4) is fixedly arranged in the middle of the bracket (41).

3. The long-section casing damage well liner patch tool of claim 2, wherein: the upper pressing plate (3) and the lower pressing plate (31) are rotationally connected with the rotating shaft (4) at one end close to the bracket (41), and the upper pressing plate (3) and the lower pressing plate (31) are in L-shaped splicing arrangement.

4. The long length casing string patch tool of claim 1 or 2, wherein: through holes are formed in the side walls of the upper pressing plate (3), the lower pressing plate (31) and the support (41), a limiting groove (5) is formed in the outer wall of one side, close to the clamping plate (7), of the oil pipe (1), and the clamping plate (7) is slidably connected in the limiting groove (5).

5. The long length casing string patch tool of claim 4, wherein: the pressure spring (51) is fixedly connected to the inner wall of the limiting groove (5), and one end of the clamping plate (7) located in the limiting groove (5) is fixedly connected with the pressure spring (51).

6. The long-section casing damage well liner patch tool of claim 5, wherein: the clamping plates (7) are arranged in an arc shape, and one sides, far away from the limiting grooves (5), of the clamping plates (7) are fixedly connected with protruding blocks (71).

7. The long length casing string patch tool of claim 4, wherein: the sliding sleeve (6) is fixedly mounted on the inner wall of the limiting groove (5), the side end of the sliding sleeve (6) extends into the oil pipe (1), the sliding groove (9) is formed in one side, close to the sliding sleeve (6), of the lower pressing plate (31), and the push rod (61) is fixedly connected to one side, close to the sliding sleeve (6), of the clamping plate (7).

8. The long length casing string patch tool of claim 7, wherein: the push rod (61) is slidably connected in the sliding sleeve (6), one end of the push rod (61) close to the sliding sleeve (6) is fixedly connected with a sliding block (91) positioned in the sliding groove (9), and the sliding block (91) is slidably connected with the sliding groove (9).