CN211715088U

CN211715088U - Hydraulic releasable slip socket

Info

Publication number: CN211715088U
Application number: CN202020126585.2U
Authority: CN
Inventors: 李文清; 于智慧; 韩滔
Original assignee: Jereh Energy Services Corp
Current assignee: Jereh Energy Services Corp
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-20
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a hydraulic power formula slips overshot, including top connection, compression spring, center pin, connection nipple joint, piston, sealing washer, throttle nozzle, urceolus and slips, connect the both ends of nipple joint respectively with top connection and urceolus fixed connection, the inside at the top connection is established to the center pin, the piston is established in the inside of connecting the nipple joint, the slips is established in the inside of urceolus, but the one end of piston and the outside sliding connection of center pin, the other end and the slips fixed connection of piston, seal through the sealing washer between piston and the center pin, at the inboard and the throttle nozzle threaded connection of center pin, at the top connection, the piston encloses between connection nipple joint and the center pin and closes and be formed with the cavity set up compression spring in the cavity. Has the advantages that: the retreating of the overshot is realized by pumping liquid, the retreating type slip overshot is simple and convenient to operate, easy to retreat and high in retreating success rate, and can adapt to the underground operation of a high deep well and an ultra-deep well.

Description

Hydraulic releasable slip socket

Technical Field

The utility model relates to the technical field of petroleum machinery, concretely relates to hydraulic power formula slips overshot.

Background

The fishing operation needs to be carried out by using the fishing barrel after the underground tool falls into the well, because of the complexity of underground working conditions, when the fishing operation is carried out by using the conventional non-retractable fishing barrel, once the object which falls is lifted to be blocked occurs, and the object which falls is not successfully released for many times, the fishing barrel at the moment is difficult to lift together with the falling object in the well, so that a great underground accident is caused. Therefore, the fishing rod can be retreated in the operation of the ultra-deep well, whether the deep well or the high deep well, and is a new trend of industry development. At present, a spiral retractable overshot is also arranged in a conventional deep well in the industry, the retractable overshot can be realized, but the difficulty in exiting the overshot from fish falling is very high in the face of the existing high deep wells and ultra-deep wells by rotating a tubular column.

Therefore, a new returnable overshot is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough that prior art is overcome to the purpose, provides a hydraulic power formula slips overshot, through the pump go into liquid realize the overshot can move back, this kind can move back formula slips overshot easy operation is convenient, withdraws from easily, and the success rate that can move back is high, also can adapt to the borehole operation of high deep well and ultra-deep well.

The purpose of the utility model is achieved through the following technical measures: the utility model provides a hydraulic power formula slips overshot, includes top connection, compression spring, center pin, connects the nipple joint, the piston, the sealing washer, the throttle nozzle, urceolus and slips, connect the both ends of nipple joint respectively with top connection and urceolus fixed connection, the inside at the top connection is established to the center pin, the inside at connecting the nipple joint is established to the piston, the inside at the urceolus is established to the slips, but the one end of piston and the outside sliding connection of center pin, the other end and the slips fixed connection of piston, seal through the sealing washer between piston and the center pin, at the inboard and the throttle nozzle threaded connection of center pin, at the top connection, the piston, enclose between connection nipple joint and the center pin and close and be formed with the cavity set up compression spring in.

Further, the upper joint and the connecting short section are fixed through a set screw after being in threaded connection.

Further, the connecting short section and the outer cylinder are fixed through a set screw after being in threaded connection.

Further, the piston and the slips are fixed through a set screw after being connected through threads.

Furthermore, an internal thread is arranged at one end of the upper joint far away from the connecting short section.

Further, the internal thread of the upper joint is a rotary shoulder type thread.

Further, the cavity is used for limiting the sliding of the piston.

Further, the compression spring is used to reset the piston.

Further, the discharge capacity can be adjusted by the size of the throttling nozzle opening.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a hydraulic power formula slips overshot, realizes going back of overshot through the pump income liquid, this kind of formula slips overshot easy operation is convenient, and it is easy to withdraw from, and the success rate that can go back is high, also can adapt to the downhole operation of high deep well and ultra-deep well. The release displacement is adjustable, and hydraulic release when the fish meets the card is more convenient.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The hydraulic coupling comprises an upper joint 1, a set screw 2, a compression spring 3, a central shaft 4, a connecting short section 5, a piston 6, a sealing ring 7, a throttling nozzle 8, an outer cylinder 9 and a slip 10.

Detailed Description

As shown in figure 1, the hydraulic force retractable slip overshot comprises an upper connector 1, a compression spring 3, a central shaft 4, a connecting short section 5, a piston 6, a sealing ring 7, a throttling nozzle 8, an outer cylinder 9 and a slip 10, the two ends of the connecting short section 5 are respectively and fixedly connected with the upper joint 1 and the outer cylinder 9, the central shaft 4 is arranged inside the upper joint 1, the piston 6 is arranged inside the connecting short section 5, the slip 10 is arranged inside the outer cylinder 9, one end of the piston 6 is connected with the outer side of the central shaft 4 in a sliding way, the other end of the piston 6 is fixedly connected with the slip 10, the piston 6 and the central shaft 4 are sealed by a sealing ring 7, the inner side of the central shaft 4 is in threaded connection with a throttling nozzle 8, a cavity is formed by enclosing the upper joint 1, the piston 6, the connecting short section 5 and the central shaft 4, and a compression spring 3 is arranged in the cavity. The cavity is used for limiting the sliding of the piston 6, and the piston 6 can slide up and down in the cavity. The compression spring 3 serves to reset the piston 6. The retreating function of the overshot is realized by pumping liquid from a wellhead, namely, the caught fish is retreated from the overshot, the retreating type slip 10 overshot is simple and convenient to operate, easy to retreat and high in retreating success rate, and can adapt to the underground operation of a high-deep well and an ultra-deep well.

And the upper joint 1 is fixed with the connecting short section 5 through a set screw 2 after being in threaded connection.

And the connecting short joint 5 is fixed with the outer cylinder 9 through a set screw 2 after being in threaded connection.

The threaded connection between the piston 6 and the slips 10 is then secured by the set screw 2.

Go up between joint 1 and the nipple joint 5, between nipple joint 5 and the urceolus 9 and the connected mode (threaded connection and holding screw 2 cooperation) between piston 6 and the slips 10 can play the fixed action at operating condition, can be when the maintenance again, convenient and fast's dismantlement.

And an internal thread is arranged at one end of the upper joint 1 far away from the connecting short section 5. The internal thread of the upper joint 1 is a rotary shoulder type thread and is used for being connected with other tools for coiled tubing fishing operation.

And 1 compression spring 3 is arranged in the cavity, and the compression spring 3 is arranged along a central shaft 4 of the hydraulic retractable slip socket.

The required discharge capacity for releasing the fish can be adjusted by the opening size of the throttling nozzle 8.

The working principle is as follows: the hydraulic retractable slip fishing barrel is lowered to the fish falling position, the pipe column is lowered continuously after the top of the fish enters the slip 10 part, the pipe column is lifted up to increase the lifting force after the slip 10 completely grabs the fish, when the piston 6 slides to the lower end of the central shaft 4, the pipe column lifting force is applied to the clamping force of the slip 10 on the fish falling, the fish falling is clamped by the slip 10, and the fish falling can be safely taken out after being lifted up continuously. When needing to release the fish, need transfer the tubular column, then pump in the oil pipe and annotate liquid, through the throttle effect of throttling nozzle 8, at the inside throttle pressure difference that produces of hydraulic power formula slips overshot instrument, hydraulic pressure force uses the piston to produce decurrent thrust, and the piston drives slips 10 and goes upward along the outer tube 9 internal inclined plane, and the slips produces the expansion, and slips 10 clamp force reduces, lasts the pump and annotates liquid, realizes overshot and fish separation.

In this application, the term "up" refers to the end near the wellhead and "down" refers to the end away from the wellhead.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hydraulic power formula slips overshot which characterized in that: including the top connection, compression spring, the center pin, connection nipple joint, the piston, the sealing washer, the throttle nozzle, urceolus and slips, connection nipple joint's both ends respectively with top connection and urceolus fixed connection, the inside at the top connection is established to the center pin, the inside at connection nipple joint is established to the piston, the inside at the urceolus is established to the slips, but the one end of piston and the outside sliding connection of center pin, the other end and the slips fixed connection of piston seal through the sealing washer between piston and the center pin, at the inboard and the throttle nozzle threaded connection of center pin, enclose between top connection, piston, connection nipple joint and the center pin and close and be formed with the cavity set up compression spring in the cavity.

2. The hydraulically retractable slip overshot of claim 1, further comprising: and the upper joint and the connecting short section are fixed through a set screw after being in threaded connection.

3. The hydraulically retractable slip overshot of claim 1, further comprising: and the connecting short section is fixed with the outer cylinder through a set screw after being in threaded connection.

4. The hydraulically retractable slip overshot of claim 1, further comprising: and the piston is fixed by a set screw after being in threaded connection with the slips.

5. The hydraulically retractable slip overshot of claim 1, further comprising: and an internal thread is arranged at one end of the upper joint far away from the connecting short section.

6. The hydraulically retractable slip overshot of claim 5, further comprising: the internal thread of the upper joint is a rotary shoulder type thread.

7. The hydraulically retractable slip overshot of claim 1, further comprising: the cavity is used for limiting the sliding of the piston.

8. The hydraulically retractable slip overshot of claim 7, further comprising: the compression spring is used for resetting the piston.

9. The hydraulically retractable slip overshot of claim 1, further comprising: the discharge volume can be adjusted by the size of the throttle nozzle opening.