CN211950409U

CN211950409U - Orbital transfer type overshot for continuous oil pipe operation

Info

Publication number: CN211950409U
Application number: CN202022183286.5U
Authority: CN
Inventors: 姜海强; 尚俊涛; 田彦; 高朋; 赵磊; 陈冰
Original assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-11-17
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a coiled tubing operation is with becoming rail formula overshot, the utility model relates to a coiled tubing operation is with becoming rail formula overshot technical field, including overshot, the top connection of overshot connects the joint, sets up the slips in the overshot, and the slips can remove in the overshot, and the overshot inner wall is the inclined plane with the junction of slips, the top surface fixed mounting body of rod of slips, suit derailment cover on the body of rod, overshot suit is in the outside of slips and derailment cover, and overshot and slips pass through the derailment pin joint, and the tip of derailment pin extends to in the derailment cover, and the overshot is seted up central eye, and central eye runs through whole overshot. The utility model has the advantages of reasonable design, convenient to use can be applicable to all kinds of size coiled tubing or cylindrical fish, can the wide application in coiled tubing salvage operation in the pit, avoids the device whole to be died in the well by the fish card.

Description

Orbital transfer type overshot for continuous oil pipe operation

Technical Field

The utility model relates to a coiled tubing operation is with becoming rail formula overshot technical field specifically is a coiled tubing operation is with becoming rail formula overshot.

Background

The existing fishing barrel can not realize the function of repeatedly fishing the falling fish for many times and releasing the falling fish through the special structure of the fishing barrel, is not easy to firmly grasp the fish top of the falling oil pipe, can not efficiently fish the falling oil pipe to treat underground accidents, and can recover the smoothness of a shaft.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coiled tubing operation is with becoming rail formula overshot to it is not enough to solve prior art.

In order to achieve the above object, the utility model provides a following technical scheme: including an overshot, the top of an overshot is connected and is connected the joint, set up the slips in the overshot, the slips can remove in the overshot, the overshot inner wall is the inclined plane with the junction of slips, the top surface fixed mounting body of rod of slips, the suit becomes the rail cover on the body of rod, overshot suit is in the outside of slips and rail cover, overshot and slips pass through the rail change pin joint, the tip of rail change pin extends to in the rail change cover, a central eye is seted up to the overshot, central eye runs through whole overshot, pass through spring coupling between slips and the top connection, the guide shoe is connected to the lower extreme of an overshot, the inboard clamping face of slips sets up the tooth of increase friction.

The orbital transfer overshot for coiled tubing operation comprises three groups of slip sheets.

According to the track-changing overshot for coiled tubing operation, the suspension device is connected between the track-changing sleeve and the overshot, so that the overshot and the track-changing sleeve can synchronously move axially, and the track-changing sleeve and the overshot can relatively rotate.

The taper of the conical hole in the lower part of the upper joint and the taper of the cone at the lower part of the overshot are 15-45 ︒.

The utility model has the advantages that: the utility model has the advantages of reasonable design, convenient to use can be applicable to all kinds of size coiled tubing or cylindrical fish, can the wide application in coiled tubing salvage operation in the pit, avoids the device whole to be died in the well by the fish card.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1-fishing barrel, 2-upper joint, 3-slips, 4-rod body, 5-orbital transfer sleeve, 6-orbital transfer pin, 7-central water hole and 8-spring.

Detailed Description

As shown in fig. 1, the present embodiment specifically discloses a rail-changing overshot for coiled tubing operation, including overshot 1, upper joint 2 is connected above overshot 1, slips 3 are arranged in overshot 1, slips 3 can move in overshot 1, the junction of overshot 1 inner wall and slips 3 is an inclined plane, top surface fixed mounting body 4 of slips 3, rail-changing sleeve 5 is sleeved on body 4, overshot 1 is sleeved outside slips 3 and rail-changing sleeve 5, overshot 1 and slips 3 are connected through rail-changing pin 6, the end of rail-changing pin 6 extends into rail-changing sleeve 5, overshot 1 is provided with central water hole 7, central water hole 7 runs through whole overshot 1, slips 3 is connected with upper joint 2 through spring 8, the lower end of overshot 1 is connected with guide shoe 9, the inside clamping surface of slips 3 is provided with teeth for increasing friction. The utility model has the advantages of reasonable design, convenient to use can be applicable to all kinds of size coiled tubing or cylindrical fish, can the wide application in coiled tubing salvage operation in the pit, avoids the device whole to be died in the well by the fish card. When a fish needs to be fished, the device is put into a well, when the device descends to a fish falling position, the slips 3 are contacted with the fish, the slips 3 are compressed by the spring 8 after being subjected to the jacking force of the fish, the slips 3 also move in the fishing barrel 1, as the slips 3 move towards the direction that the cross section area of the cavity in the fishing barrel 1 is larger and larger, the inner diameter of the slips 3 is also increased, the fish can smoothly enter the slips 3, then the device is lifted, the slips 3 move towards the direction that the cross section area of the cavity in the fishing barrel 1 is smaller and smaller under the influence of the gravity of the slips 3 and the fish, the radial pressure applied to the slips 3 is increased, the inner diameter of the slips 3 is reduced, the fish can be gripped, and then the device is continuously lifted to fish out the fish; the in-process that the slips 3 lifted up can't remove and show that the fish is blocked and dies in the well promptly, continue to descend this device orbital transfer pin 6 will enter into the orbital transfer track on the orbital transfer cover 5 this moment, so the orbital transfer pin just can not be fixed slips 3 and overshot 1 again, consequently slips 3 just can not receive the pressure of overshot 1 inner wall again, the internal diameter of slips 3 increases, the fish that is located in slips 3 also just with slips 3 natural separation, can avoid this device wholly by the fish card die in the well like this.

Specifically, the slips 3 described in this embodiment are made up of three sets of slip segments. When using this device, constitute by three group's ka-tile pieces through slips 3, can be convenient for carry out the centre gripping, make this device use more convenient.

Furthermore, a suspension device is connected between the orbital transfer sleeve 5 and the overshot 1, so that the overshot 1 and the orbital transfer sleeve 5 can move axially synchronously, and the orbital transfer sleeve 5 and the overshot 1 can rotate relatively. When the device is used, the hanging device is arranged to fish a broken oil pipe, the fishing pipe column can be rotated, and other fishing measures can be taken.

Furthermore, the taper of the conical hole in the lower part of the upper connector 2 and the taper of the cone at the lower part of the overshot 1 are 15-45 ︒ in the embodiment. When the device is used, the best radial component force can be conveniently generated through the conical hole in the lower part of the upper connector 2 and the conical degree of the cone at the lower part of the overshot 1 being 15-45 ︒, so that the lower strip body of the overshot 1 can be contracted.

The embodiments of the present invention have been described with reference to the accompanying drawings, but these descriptions should not be construed as limiting the scope of the present invention, and the technical contents not described in detail in the present invention are known in the art.

Claims

1. The utility model provides a section of thick bamboo is salvaged with becoming rail formula to coiled tubing operation which characterized in that: comprises a fishing barrel (1), an upper connector (2) is connected above the fishing barrel (1), a slip (3) is arranged in the fishing barrel (1), the slip (3) can move in the fishing barrel (1), the joint of the inner wall of the fishing barrel (1) and the slip (3) is an inclined plane, a rod body (4) is fixedly installed on the top surface of the slip (3), a track changing sleeve (5) is sleeved on the rod body (4), the fishing barrel (1) is sleeved outside the slip (3) and the track changing sleeve (5), the fishing barrel (1) and the slip (3) are connected through a track changing pin (6), the end part of the track changing pin (6) extends into the track changing sleeve (5), a central water hole (7) is arranged in the fishing barrel (1), the central water hole (7) penetrates through the whole fishing barrel (1), the slip (3) and the upper connector (2) are connected through a spring (8), the lower end of the fishing barrel (1) is connected with a guide shoe (9), the inner side clamping surface of the slip (3) is provided with teeth for increasing friction.

2. The orbital transfer overshot for coiled tubing operation of claim 1, characterized in that: the slips (3) are composed of three groups of slip sheets.

3. The orbital transfer overshot for coiled tubing operation of claim 1, characterized in that: the track transfer sleeve (5) and the overshot (1) are connected with a suspension device, so that the overshot (1) and the track transfer sleeve (5) can synchronously move axially, and the track transfer sleeve (5) and the overshot (1) can relatively rotate.

4. The orbital transfer overshot for coiled tubing operation of claim 1, characterized in that: the conicity of the conical hole in the lower part of the upper joint (2) and the conical degree of the conical body at the lower part of the overshot (1) are 15-45 ︒.