CN212225158U

CN212225158U - Underground pipe fishing device

Info

Publication number: CN212225158U
Application number: CN202020913646.XU
Authority: CN
Inventors: 魏修深
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-12-25
Anticipated expiration: 2030-05-26

Abstract

The utility model provides a downhole pipe fishing device, insert including barrel, rotation and grab and lift piece, rotary driving mechanism, the barrel circumference wall is seted up and is vertically link up the slot, the rotation is inserted and is grabbed and lift piece bottom and articulate in the slot, rotary driving mechanism butt is inserting in the rotation and grabs and lift piece middle section side reason to the drive rotation is inserted and is grabbed the piece and rotate to the inboard side. The slotting is evenly distributed with at least three, the rotary inserting and grabbing and lifting pieces are at least provided with two groups, and the plurality of groups of rotary inserting and grabbing and lifting pieces are positioned at different heights in the slotting. The rotary inserting and grabbing piece is a scaly claw. The rotary driving mechanism comprises a piston sleeve, a piston rod and a water pipe, the piston rod is arranged in the piston sleeve, the front end of the piston rod is abutted to the edge of the middle section side of the rotary insertion grabbing and lifting piece, and the rear end of the piston sleeve is connected with the water pipe. The utility model relates to a rationally, simple structure can realize salvaging nonmetal underground pipe.

Description

Underground pipe fishing device

Technical Field

The utility model relates to a technique that the underground pipe was salvaged, especially a device is salvaged to underground pipe.

Background

At present, when pipes of oil-water wells are salvaged at home and abroad, three types of taper salvage tools, anchor salvage tools and barrel salvage tools are mainly adopted. The cone fishing tool is a special tool for realizing fishing of fallen objects by specially making buckles on inner holes or outer walls of the fallen objects (such as oil pipes, drill rods, packers, water distributors and other downhole tools), has high fishing success rate on metal pipes and is easy to master operation, but is difficult to make buckles on nonmetal pipes and cannot be used; a common sliding block fishing spear in anchor fishing tools is an inner fishing tool, can be used for fishing falling objects with inner holes, such as drill pipes, oil pipes, milling pipes, liner pipes, packers, water distributors, production distributors and the like, and can also be used for performing back-off operation on the falling objects when the falling objects are blocked or being matched with other tools (such as jarring devices, back-off devices and the like), the strength of a non-metal pipe cannot meet the requirement, and the anchor fishing spear is not suitable for fishing the non-metal underground pipe; the barrel type fishing tool is a tool for fishing from the outside of a fallen object, the outer diameter of the fished fallen object is too small and limited, and the barrel type fishing tool is not suitable for fishing of nonmetal underground pipes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pipe fishing device in pit, reasonable in design, simple structure can realize salvaging nonmetal pipe in the pit.

The purpose of the utility model can be realized by the following technical measures:

this underground pipe fishing device includes that barrel, rotation are inserted and are grabbed piece, rotary driving mechanism, the barrel circumference wall is seted up and is vertically link up the slot, the piece bottom is grabbed in rotatory inserting articulates in the slot, rotary driving mechanism butt is inserting in the rotation and is grabbed piece middle section side reason to the drive rotation is inserted and is grabbed the piece and rotate to the inboard side.

the slotting is evenly distributed with at least three, the rotary inserting and grabbing and lifting pieces are at least provided with two groups, and the plurality of groups of rotary inserting and grabbing and lifting pieces are positioned at different heights in the slotting.

The upper part of the rotary inserting and grabbing piece is in a pointed shape, and the lower end of the rotary inserting and grabbing piece is in an arc shape.

The rotary inserting and grabbing piece is a scaly claw.

The rotary driving mechanism comprises a piston sleeve, a piston rod and a water pipe, the piston rod is arranged in the piston sleeve, the front end of the piston rod is abutted to the edge of the middle section side of the rotary insertion grabbing and lifting piece, and the rear end of the piston sleeve is connected with the water pipe.

And a sealing ring is arranged between the piston rod and the piston sleeve.

The circumferential wall of the cylinder body is provided with an axial water channel which is communicated with the water pipe.

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

the utility model relates to a rationally, simple structure, easy manufacturing, with low costs, convenient to use, efficient can be according to nonmetal underground pipe weight with do the sealing force size, the salvage problem of nonmetal underground pipe has been solved to the weight of size, structural style, quantity and the barrel of adjustment scale form claw, and has guaranteed the reliability of salvaging.

Drawings

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

In the figure: 1. the device comprises scale-shaped claws, 2 parts of a sealing ring, 3 parts of a piston rod, 4 parts of a water pipe, 5 parts of a non-metal pipe outer protective layer, 6 parts of a non-metal pipe glass fiber reinforced plastic layer, 7 parts of a cylinder body, 8 parts of water.

Detailed Description

The following detailed description and technical contents of the present invention are described with reference to the accompanying drawings, which are provided for reference and illustration purposes only, and are not intended to limit the present invention.

According to the figure 1, the underground pipe fishing device comprises a barrel body 7, a rotary inserting and grabbing piece and a rotary driving mechanism, wherein a longitudinal through slot is formed in the circumferential wall of the barrel body, the bottom of the rotary inserting and grabbing piece is hinged in the slot, the rotary driving mechanism is abutted to the middle side edge of the rotary inserting and grabbing piece and drives the rotary inserting and grabbing piece to rotate towards the inner side. The slotting is evenly distributed with at least three, the rotary inserting and grabbing and lifting pieces are at least provided with two groups, and the plurality of groups of rotary inserting and grabbing and lifting pieces are positioned at different heights in the slotting. The upper part of the rotary inserting and grabbing piece is in a pointed shape, and the lower end of the rotary inserting and grabbing piece is in an arc shape. The rotary inserting and grabbing piece is a scaly claw 1. The rotary driving mechanism comprises a piston sleeve, a piston rod 3 and a water pipe 4, the piston rod is arranged in the piston sleeve, the front end of the piston rod is abutted to the edge of the middle section of the rotary insertion grabbing and lifting piece, and the rear end of the piston sleeve is connected with the water pipe. And a sealing ring 2 is arranged between the piston rod and the piston sleeve. The circumferential wall of the cylinder body is provided with an axial water channel which is communicated with the water pipe.

The scale-shaped claws on the cylinder body can adopt different numbers of scale-shaped claws according to different weights and sealing force of the nonmetal underground pipe. The scale-shaped claws on the cylinder body can adopt different structural forms according to different weights and sealing force of the nonmetal underground pipe.

Example 1: shown by figure 1, this underground pipe fishing device includes barrel 7, barrel 7 is in the outside of nonmetal downhole pipe, be equipped with multiunit scale form claw 1 on its barrel 7, the point portion of scale form claw 1 is inwards, be equipped with piston rod 3 in one side of scale form claw 1, the central line slant inboard of piston rod 3, oppression scale form claw that can be better, there is sealing washer 2 on piston rod 3, the rear portion of piston rod 3 is equipped with water pipe 4, through pressurizing to water pipe 4 water injection, 3 antedisplacement promotion scale form claws 1 of piston rod deflect, scale form claw 1 point portion imbeds nonmetal underground pipe outer tube protection layer 5 gradually, act on nonmetal underground pipe glass steel layer 6, barrel 7 lifts simultaneously, can salvage the well head with nonmetal underground pipe.

Example 2: nonmetal downhole fishing tool of formula is snatched to scale includes the barrel, non-metal downhole pipe in barrel 7, when barrel 7 embolias non-metal downhole pipe, scale claw 1 free state on the barrel 7 overlaps outside non-metal downhole pipe outer protective layer 5, the back water injection 8 pressurization that targets in place, lead to pipe 4, pressure acts on piston rod 3, piston rod 3 promotes scale claw 1 and deflects, barrel 7 lifts simultaneously, the two acts on simultaneously, scale claw 1 inlays gradually through non-metal downhole pipe outer protective layer 5, act on non-metal downhole pipe glass steel layer 6, the water pressure is kept this moment, lift barrel 7, can salvage the well head with non-metal downhole pipe.

The utility model discloses solve original fishing tool high strength requirement effectively, can't make the knot on non-metallic downhole pipe, be suitable for bore restriction scheduling problem. The utility model relates to a rationally, simple structure, it is efficient, with low costs, can be according to nonmetal underground pipe weight with do the size of sealing the power, the fishing problem of nonmetal downhole pipe has been solved to the weight of size, structural style, quantity and the barrel of adjustment scale form claw to the reliability of salvaging has been guaranteed.

The above only is the preferred embodiment of the present invention, not for limiting the scope of the present invention, other applications the equivalent changes of the patent spirit of the present invention all belong to the scope of the present invention.

Claims

1. The utility model provides a downhole pipe fishing device, its characterized in that inserts including barrel, rotation and grabs and lift piece, rotary driving mechanism, barrel circumference wall is seted up and is vertically link up the slot, rotatory inserting grabs and lifts piece bottom and articulates in the slot, rotary driving mechanism butt is inserting in the rotation and grabs and lift piece middle section side reason to the drive is rotatory to be inserted and is grabbed and lift the piece and rotate to the inboard side.

2. The fishing device for the underground pipe as claimed in claim 1, wherein the number of the slots is at least three, at least two groups of the rotary inserting and lifting pieces are arranged, and the plurality of groups of the rotary inserting and lifting pieces are at different heights in the slots.

3. The fishing device for the downhole tubular according to claim 1, wherein the rotary inserting and lifting piece has a pointed upper part and an arc lower part.

4. A downhole tubular fishing apparatus as claimed in claim 1, wherein the rotating gripping and lifting blade is a scale-shaped claw.

5. The downhole pipe fishing device according to claim 1, wherein the rotary driving mechanism comprises a piston sleeve, a piston rod and a water pipe, the piston rod is arranged in the piston sleeve, the front end of the piston rod abuts against the side edge of the middle section of the rotary inserting and grabbing piece, and the rear end of the piston sleeve is connected with the water pipe.

6. A downhole tubular fishing apparatus according to claim 5, wherein a sealing ring is provided between the piston rod and the piston sleeve.

7. A downhole pipe fishing device according to claim 5, wherein the circumferential wall of the barrel is provided with an axial water passage, the water passage being in communication with the water pipe.