CN201560735U - Slip-type underground restrictor fishing tool - Google Patents
Slip-type underground restrictor fishing tool Download PDFInfo
- Publication number
- CN201560735U CN201560735U CN2009202468082U CN200920246808U CN201560735U CN 201560735 U CN201560735 U CN 201560735U CN 2009202468082 U CN2009202468082 U CN 2009202468082U CN 200920246808 U CN200920246808 U CN 200920246808U CN 201560735 U CN201560735 U CN 201560735U
- Authority
- CN
- China
- Prior art keywords
- fishing
- slip
- axle
- mandrel
- type underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
The utility model relates to a slip-type underground restrictor fishing tool. The slip-type underground restrictor fishing tool comprises a mandrel, a guard cover, a spring, a safe shear pin and a fishing pawl. The slip-type underground restrictor fishing tool is characterized in that the mandrel has a horn-shaped step on the tail part; the fishing pawl is sheathed on the tail part of the mandrel and is connected with the mandrel through the safe shear pin; the safe shear pin is located on the mandrel to make the fishing pawl in such a state that the inner diameter of the fishing pawl is smaller than the outer diameter of the restrictor fishing neck; the spring is sheathed on the mandrel between the guard cover and the fishing pawl; the guard cover is connected with the mandrel through threads; and the fishing pawl can generate radial deformation under the action of inertial force. The slip-type underground restrictor fishing tool has the advantages of simple structure, easy manufacture, low cost, convenient operation, high success ratio, etc.
Description
Technical field
The utility model relates to a kind of industrial gas oil underground work instrument, particularly relates to a kind of slip-type underground throttle device fishing tool.
Background technology
In natural gas extraction,, underground throttle device usually is installed in the gas well down-hole for step-down, throttling, limited production.The underground throttle device of Su Lige gas field extensive use at present is the slip-type underground throttle device and since produce need gas well to transfer to produce to change the restriction choke valve or since restriction choke when losing efficacy, salvage restriction choke.Existing slip-type underground throttle device fishing tool is a cartridge type, and when junk (as fracturing sand, broken rubber) was arranged on the restriction choke, this fishing tool can't be caught the restriction choke fishing neck, causes salvaging failure.
The utility model content
The purpose of this utility model provides slip-type underground throttle device fishing tool a kind of pawl formula, that radial deformation can take place under the inertia force effect.
Slip-type underground throttle device fishing tool described in the utility model is cut off with bailer grab and is formed by axle, guard shield, spring, safety; The axle afterbody is tubaeform step, bailer grab is enclosed within the axle afterbody, cut off bailer grab and axle binding by safety, safety cuts off to be positioned at and makes bailer grab be in internal diameter less than restriction choke fishing neck external diameter state place on the axle, spring housing is being on the axle between guard shield and the bailer grab, and guard shield is connected with axle by screw thread.
The utility model is finished the salvaging process of slip-type underground throttle device by steel wire operation.Connect the fishing tool string before the use, instrument is in proper order from top to bottom: rope socket+weighted lever+bumper jar+slip-type underground throttle device fishing tool.The utility model need of work was finished by two steps: 1, grasp restriction choke; 2, restriction choke is slipped out of the hand.
1, grasps restriction choke
Transfer down-hole fishing tool string fast being positioned at the above 2-3m of slip-type underground throttle device during operation, but bailer grab radial deformation under the effect of inertia force, the restriction choke fishing neck is inserted in the bailer grab, because bailer grab is in internal diameter less than restriction choke fishing neck external diameter state, this moment, bailer grab was successfully caught restriction choke fishing neck necking down position, along with steel wire operation takes out pit shaft with restriction choke.
2, restriction choke is slipped out of the hand
Jar socket makes progress, axle moves upward with respect to bailer grab, this moment, safety pin was cut off, under the effect of compression spring, bailer grab moves downward with respect to axle, because the barrier effect of axle afterbody step, bailer grab is strutted, the bailer grab internal diameter is greater than restriction choke fishing neck external diameter, and fishing tool successfully breaks away from restriction choke.
Advantage of the present utility model is: according to the situation that whether has or not junk on the restriction choke, radial deformation can take place in bailer grab under the effect of inertia force, and has simple in structure, handling ease, with low cost, easy to operate, fishing success ratio advantages of higher.
Description of drawings
Fig. 1: slip-type underground throttle device fishing tool structural representation.
Wherein: 1, axle 2, guard shield 3, spring 4, safety cut off 5, bailer grab
The specific embodiment
Slip-type underground throttle device fishing tool described in the utility model by axle 1, guard shield 2, spring 3, safety cut off 4 and bailer grab 5 form; Axle 1 afterbody is tubaeform step, bailer grab 5 is enclosed within axle 1 afterbody, cut off 4 with bailer grab and axle 1 binding by safety, safety cuts off 4 and is positioned at and makes bailer grab 5 be in internal diameter less than restriction choke fishing neck external diameter state place on the axle, spring 3 is enclosed within and is on the axle 1 between guard shield 2 and the bailer grab 5, and guard shield 2 is connected with axle 1 by screw thread.
Claims (1)
1. a slip-type underground throttle device fishing tool is cut off with bailer grab and is formed by axle, guard shield, spring, safety; It is characterized in that: the axle afterbody is tubaeform step, bailer grab is enclosed within the axle afterbody, cut off bailer grab and axle binding by safety, safety cuts off to be positioned at and makes bailer grab be in internal diameter less than restriction choke fishing neck external diameter state place on the axle, spring housing is being on the axle between guard shield and the bailer grab, and guard shield is connected with axle by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202468082U CN201560735U (en) | 2009-11-04 | 2009-11-04 | Slip-type underground restrictor fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202468082U CN201560735U (en) | 2009-11-04 | 2009-11-04 | Slip-type underground restrictor fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201560735U true CN201560735U (en) | 2010-08-25 |
Family
ID=42625881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202468082U Expired - Lifetime CN201560735U (en) | 2009-11-04 | 2009-11-04 | Slip-type underground restrictor fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201560735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736776A (en) * | 2019-01-29 | 2019-05-10 | 中国石油集团川庆钻探工程有限公司 | Oil well test instruments catcher |
| CN112554830A (en) * | 2020-12-22 | 2021-03-26 | 贵州高峰石油机械股份有限公司 | Limiting fishing spear capable of repeatedly using, dismounting and mounting shear screws |
-
2009
- 2009-11-04 CN CN2009202468082U patent/CN201560735U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736776A (en) * | 2019-01-29 | 2019-05-10 | 中国石油集团川庆钻探工程有限公司 | Oil well test instruments catcher |
| CN109736776B (en) * | 2019-01-29 | 2023-10-13 | 中国石油集团川庆钻探工程有限公司 | Trap for well testing instrument |
| CN112554830A (en) * | 2020-12-22 | 2021-03-26 | 贵州高峰石油机械股份有限公司 | Limiting fishing spear capable of repeatedly using, dismounting and mounting shear screws |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |