CN219387835U

CN219387835U - Coiled tubing overshot

Info

Publication number: CN219387835U
Application number: CN202320373862.3U
Authority: CN
Inventors: 李富国; 李凤军
Original assignee: Daqing Chenping Drilling Technology Service Co ltd
Current assignee: Daqing Chenping Drilling Technology Service Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-07-21
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of oil pipe operation, in particular to a coiled tubing overshot, which comprises an overshot body, wherein sliding grooves are uniformly and equidistantly formed in the side wall of the overshot body, connecting rods are uniformly and equidistantly fixedly arranged on the inner side wall of the overshot body, an oil cylinder is fixedly arranged at one end of each of three connecting rods, which is far away from the overshot body, a telescopic rod is fixedly arranged at the output end of each of the oil cylinders, a fixed ring is fixedly arranged on the side wall of each of the telescopic rods, a grabbing mechanism is slidably arranged in each of the three sliding grooves and comprises sliding rods, the three sliding rods are respectively and internally arranged in the three sliding grooves in a sliding manner, elastic strips are fixedly arranged on the side walls of the three sliding rods, one ends of the three compression springs, which are far away from the three elastic strips, are fixedly connected with the side wall of the overshot body, and a connecting block is uniformly and equidistantly fixedly arranged in the inner wall of the overshot body, so that the overshot device has a better fishing effect when in use, and a tighter connection effect between the overshot body and a fish body is achieved.

Description

Coiled tubing overshot

Technical Field

The utility model relates to the technical field of oil pipe operation, in particular to a coiled tubing overshot.

Background

The coiled tubing is a tubing made of low-carbon alloy steel, has good flexibility, is also called a coiled tubing, has a length of a coil of coiled tubing of several kilometers, can replace a conventional tubing to perform a plurality of operations, and has the characteristics of pressurized operation and continuous lifting, and has the advantages of small volume, quick operation period and low cost.

In the downhole operation of oil field, some pipelines can drop in the sleeve pipe, generally all take out the fish with overshot, and current overshot is when getting into oil pipe, does not have spacingly, can produce to rock, leads to overshot to be difficult to touch the fish, and current overshot is fixed inadequately closely after being connected with the fish simultaneously, leads to the fish to drop when upwards lifting, leads to equipment salvage effect relatively poor.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a coiled tubing overshot.

In order to solve the technical problems, the utility model provides the following technical scheme: the continuous oil pipe overshot comprises an overshot body, wherein sliding grooves are uniformly and equidistantly formed in the side wall of the overshot body, connecting rods are uniformly and equidistantly fixedly arranged on the inner side wall of the overshot body, an oil cylinder is fixedly arranged at one end, far away from the overshot body, of each connecting rod, a telescopic rod is fixedly arranged at the output end of each oil cylinder, and a fixing ring is fixedly arranged on the side wall of each telescopic rod;

the three sliding grooves are internally provided with grabbing mechanisms in a sliding manner;

the grabbing mechanism comprises sliding rods, three sliding rods are respectively and internally arranged in three sliding grooves in a sliding mode, and elastic strips are fixedly installed on the side walls of the three sliding rods.

As a preferable technical scheme of the utility model, compression springs are fixedly arranged on the side walls of the three elastic strips, and one ends of the three compression springs, which are far away from the three elastic strips, are fixedly connected with the side walls of the overshot body.

As a preferable technical scheme of the utility model, connecting blocks are uniformly and equidistantly fixedly arranged in the inner wall of the overshot body, and central rods are fixedly arranged in the three connecting blocks.

As a preferable technical scheme of the utility model, the surfaces of the three central rods are respectively sleeved with a swivel in a rotating way, and the side walls of the three swivel are respectively fixedly provided with a swinging rod and a grabbing rod.

As a preferable technical scheme of the utility model, the three swinging rods are respectively positioned above the three grabbing rods, the fixed ring is positioned below the three swinging rods and is attached to the three swinging rods, and the three swinging rods are respectively attached to the three sliding rods.

As a preferable technical scheme of the utility model, torsion springs are fixedly arranged on the side walls of two sides of the three swivel rings, and one ends of the three groups of torsion springs, which are far away from the three swivel rings, are fixedly connected with the inner walls of the three connecting blocks respectively.

Compared with the prior art, the utility model has the following beneficial effects:

firstly, through the design of the swinging rod and the grabbing rods, the grabbing rods fixed with the swinging rod are driven to be overturned anticlockwise under the overturning of the swinging rod, the fishes are effectively clamped and fixed under the anticlockwise overturning of the three grabbing rods, and then the salvaging barrel body is taken out, so that the salvaging effect of the device is better when the device is used, and the effect of more tightly connecting the salvaging barrel body with the fishes is achieved;

secondly, through the design of slide bar, elastic strip and compression spring, will drive the elastic strip that fixes with it and take place to remove thereupon under the slip of slide bar, the elastic strip will drive compression spring and take place tensile thereupon this moment, will produce elasticity this moment, because the elastic strip itself also possesses elasticity, will accomplish the spacing to the overshot body when elastic strip and oil pipe inner wall contact for the overshot body is difficult for taking place to empty dislocation in oil pipe inside, has further strengthened the salvage effect of equipment.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a fastening ring connection structure according to the present utility model;

FIG. 3 is a schematic view of a slide bar connection structure according to the present utility model;

fig. 4 is a schematic view of the explosion structure of the swivel connection of the present utility model.

Wherein: 11. a overshot body; 12. a chute; 13. a connecting rod; 14. an oil cylinder; 15. a telescopic rod; 16. a fixing ring; 21. a slide bar; 22. an elastic strip; 23. a compression spring; 24. a connecting block; 25. a central rod; 26. a swivel; 27. a swinging rod; 28. a grab bar; 29. and (3) a torsion spring.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples:

as shown in fig. 1, 2, 3 and 4, the coiled tubing overshot comprises an overshot body 11, sliding grooves 12 are uniformly and equidistantly formed in the side wall of the overshot body 11, connecting rods 13 are uniformly and equidistantly fixedly arranged on the inner side wall of the overshot body 11, an oil cylinder 14 is fixedly arranged at one end, far away from the overshot body 11, of each of the three connecting rods 13, a telescopic rod 15 is fixedly arranged at the output end of the oil cylinder 14, and a fixing ring 16 is fixedly arranged on the side wall of the telescopic rod 15;

the three sliding grooves 12 are internally provided with grabbing mechanisms in a sliding manner;

the grabbing mechanism comprises slide bars 21, three slide bars 21 are respectively and slidingly arranged in three slide grooves 12, elastic bars 22 are fixedly arranged on the side walls of the three slide bars 21, compression springs 23 are fixedly arranged on the side walls of the three elastic bars 22, one ends of the three compression springs 23, which are far away from the three elastic bars 22, are fixedly connected with the side walls of the overshot body 11, connecting blocks 24 are uniformly and equidistantly fixedly arranged in the inner wall of the overshot body 11, center rods 25 are fixedly arranged in the three connecting blocks 24, rotating rings 26 are respectively sleeved on the surfaces of the three center rods 25 in a rotating way, swinging rods 27 and grabbing rods 28 are respectively and fixedly arranged on the side walls of the three rotating rings 26, the three swinging rods 27 are respectively positioned above the three grabbing rods 28, the fixed rings 16 are positioned below and jointed with the three swinging rods 27, the three swinging rods 27 are respectively jointed with the three slide bars 21, torsion springs 29 are fixedly arranged on the side walls of the two sides of the three rotating rings 26, when in use, the overshot body 11 can be placed in an oil well firstly, when the overshot body 11 is contacted with a fish, the oil cylinder 14 can be started, the telescopic rod 15 connected with the output shaft of the overshot body is driven to move upwards under the action of the oil cylinder 14, the fixed ring 16 is driven to rise under the action of the telescopic rod 15, the three swinging rods 27 are extruded to rotate anticlockwise under the rising of the fixed ring 16, the three swinging rods 27 respectively drive the three swinging rings 26 to rotate anticlockwise on the three central rods 25, the three swinging rods 26 drive the torsional springs 29 fixed with the three swinging rods, the grabbing rods 28 fixed with the swinging rods are driven to rotate anticlockwise under the turning of the swinging rods 27, the three grabbing rods 28 are turned anticlockwise to effectively clamp and fix the fish, and then the overshot body 11 is taken out, so that the fishing effect of the device is better when the device is used, and the effect that the overshot body 11 is tightly connected with the fish is achieved; when the swing rod 27 overturns anticlockwise, the sliding rod 21 attached to the swing rod is extruded to slide in the sliding groove 12, and the elastic strip 22 fixed with the swing rod is driven to move in the sliding of the sliding rod 21, at the moment, the elastic strip 22 drives the compression spring 23 to stretch, at the moment, elasticity is generated, and because the elastic strip 22 also has elasticity, limiting of the overshot body 11 is completed when the elastic strip 22 contacts with the inner wall of the oil pipe, the overshot body 11 is not easy to fall and misplacement in the oil pipe, and the salvaging effect of equipment is further enhanced.

Working principle:

the first step: when the fishing barrel body 11 is used, the fishing barrel body 11 can be placed in an oil well firstly, when the fishing barrel body 11 is contacted with a fish, the oil cylinder 14 can be started at the moment, the telescopic rod 15 connected with the output shaft of the fishing barrel body is driven to move upwards along with the fishing barrel body under the action of the oil cylinder 14, the fixed ring 16 is driven to rise along with the movement of the telescopic rod 15, the three swinging rods 27 are extruded to rotate anticlockwise along with the rising of the fixed ring 16, the three swinging rods 27 respectively drive the three rotating rings 26 to rotate anticlockwise along with the three center rods 25, meanwhile, the three rotating rings 26 also drive the torsion springs 29 fixed with the rotating rings to twist along with the rotating rings, the grabbing rods 28 fixed with the rotating rings are driven to rotate anticlockwise along with the overturning of the swinging rods 27, the fish is effectively clamped and fixed under the anticlockwise overturning of the three grabbing rods 28, and then the fishing barrel body 11 is taken out, so that the fishing barrel body 11 has better fishing effect and a tighter connection effect when in use;

and a second step of: when the swing rod 27 overturns anticlockwise, the sliding rod 21 attached to the swing rod is extruded to slide in the sliding groove 12, and the elastic strip 22 fixed with the swing rod is driven to move in the sliding of the sliding rod 21, at the moment, the elastic strip 22 drives the compression spring 23 to stretch, at the moment, elasticity is generated, and because the elastic strip 22 also has elasticity, limiting of the overshot body 11 is completed when the elastic strip 22 contacts with the inner wall of the oil pipe, the overshot body 11 is not easy to fall and misplacement in the oil pipe, and the salvaging effect of equipment is further enhanced.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a coiled tubing overshot, includes overshot body (11), evenly equidistant spout (12) have been seted up on overshot body (11) lateral wall, evenly equidistant fixed mounting has connecting rod (13), its characterized in that on overshot body (11) inside wall: an oil cylinder (14) is fixedly arranged at one end, far away from the overshot body (11), of each connecting rod (13), a telescopic rod (15) is fixedly arranged at the output end of each oil cylinder (14), and a fixing ring (16) is fixedly arranged on the side wall of each telescopic rod (15);

the three sliding grooves (12) are internally provided with grabbing mechanisms in a sliding manner;

the grabbing mechanism comprises sliding rods (21), three sliding rods (21) are respectively arranged in three sliding grooves (12) in a sliding mode, and elastic strips (22) are fixedly installed on the side walls of the three sliding rods (21).

2. A coiled tubing overshot according to claim 1, characterized in that the side walls of the three elastic strips (22) are fixedly provided with compression springs (23), and one ends of the three compression springs (23) far away from the three elastic strips (22) are fixedly connected with the side walls of the overshot body (11).

3. A coiled tubing overshot according to claim 2, characterized in that the inner wall of the overshot body (11) is uniformly and equidistantly fixedly provided with a connecting block (24), and the inside of each of the three connecting blocks (24) is fixedly provided with a central rod (25).

4. A coiled tubing overshot according to claim 3, characterized in that the surfaces of the three central rods (25) are each rotatably sleeved with a swivel (26), and the side walls of the three swivel (26) are fixedly provided with a swinging rod (27) and a gripping rod (28), respectively.

5. A coiled tubing overshot according to claim 4, c h a r a c t e r i z e d in that three of the swing rods (27) are located above the three gripping rods (28), respectively, and that the fixing ring (16) is located below and in abutment with the three swing rods (27), and that the three swing rods (27) are in abutment with the three slide bars (21), respectively.

6. The coiled tubing overshot according to claim 4, wherein torsion springs (29) are fixedly mounted on side walls of two sides of the three swivel rings (26), and one ends of the three torsion springs (29) far away from the three swivel rings (26) are fixedly connected with inner walls of the three connecting blocks (24) respectively.