Unlock instant, AI-driven research and patent intelligence for your innovation.

Slip socket

An overshot and barrel technology, applied in wellbore/well components, earthwork drilling, etc., can solve problems such as the inability of falling fish to exit, easy slippage, etc., and achieve high salvage success rate, high tensile strength, and large size range. Effect

Inactive Publication Date: 2013-02-06
SHAANXI QIYUAN TECH DEV
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The female cone needs to be dropped to catch the fish. The fish is too heavy and easy to slip off, and the fish cannot be pulled out if it is stuck.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Slip socket
  • Slip socket
  • Slip socket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The slip overshot according to the present invention includes a hollow cylindrical upper joint 1 , a hollow cylindrical body 3 , guide shoes 7 and milling shoes 5 .

[0018] The upper internal thread of the upper joint 1 is connected with the salvage drilling tool, and the lower fine tooth external thread is connected with the upper part of the cylinder body 3 .

[0019] Both ends of the cylinder body 3 are fine-tooth internal threads, and there are left-handed serrated threads inside. The upper end of the left-handed serrated thread is processed with a limit shoulder, and the bottom of the keyway at the lower end is flush with the inner wall of the cylinder body 3 .

[0020] Blue tiles 2 are arranged on the inner surface of the cylinder, and left-handed serrated threads are also arranged on the blue tiles 2, and the left-handed serrated thread cone surface on the blue tile 2 is narrower than the left-handed serrated thread cone surface on the inner surface of the cylin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a slip socket, which relates to a grappling tool for fishing or removing objects in a borehole or a well. The slip socket disclosed by the invention comprises a hollow tubular upper joint and a hollow tubular barrel connected with the upper joint, wherein the inner surface of the barrel is provided with left-hand buttress threads thereon. The slip socket has high tensile strength and large fish fishing range, can realize the cycle operation of fishing, retreating and fluid drilling, and can solve the fishing technical problems of burrs on fish heads, breakage and serious deviation from borehole axis. The slip socket has the advantages of reliable technology, convenience for field operation and high fishing success rate.

Description

technical field [0001] The invention relates to a fishing tool for fishing or removing objects in boreholes or wells. Background technique [0002] To deal with falling fish accidents, the male cone and spear can be used to fish from the inner diameter of the fish head, and the female cone can also be used to fish from the outer diameter of the fish head. The use of male cones and fishing spears requires that the fish have a larger water eye to ensure that the fishing tools entering the well are strong enough, otherwise, even if the fish is caught, it is easy to break. The female awl needs to be dropped to catch the fish. The fish is too heavy and easy to slip off, and the fish is stuck and cannot be withdrawn. Contents of the invention [0003] The invention aims to provide a slip overshot suitable for fishing overweight fish in deep wells and ultra-deep wells. [0004] The slip overshot of the present invention comprises a hollow cylindrical upper joint and a hollow cy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E21B31/18E21B31/16
Inventor 张淑芬
Owner SHAANXI QIYUAN TECH DEV