Downhole operation fishing tool

A technology for fishing tools and shells, which is applied in the field of fishing tools for downhole operations, and can solve the problems of fishing tools such as restrictions on the types of salvaged objects and damage to fishing tools, and achieve good fishing effects, high fishing success rates, and expanded application scope.

Active Publication Date: 2021-07-23
大庆市奈固石油机械设备制造有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art such as the damage to the fishing tool and the well wall caused by the shaking of the fishing tool underground and the limitation of the type of salvage by the fishing tool, and proposes a fishing tool for downhole operation. Mechanism and grasping mechanism, improve the stability of fishing tools in the well and the diversity of fishing, meet the fishing work in different oil wells, improve fishing efficiency, and reduce use costs

Method used

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Embodiment Construction

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033]It should be understood that the orientations or positional relationships indicated by the terms "up and down, left and right, both ends, vertical, inside, outside, middle, top, bottom, both sides, top, bottom, both sides, above" are based on The orientation or positional relationship shown in the drawings is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore c...

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Abstract

The invention relates to the technical field of oil exploitation, in particular to a downhole operation fishing tool. The downhole operation fishing tool comprises a shell, a first power mechanism, stabilizing mechanisms, a second power mechanism, a first grabbing mechanism and a second grabbing mechanism, wherein the first power mechanism, the second power mechanism and the second grabbing mechanism are sequentially arranged in the shell, the stabilizing mechanisms are arranged on the two sides outside the shell, and the first grabbing mechanism is installed at the position close to the bottom of the shell. According to the scheme, through the power mechanisms, the stabilizing mechanisms and the grabbing mechanisms, the underground stability and fishing diversity of the fishing tool are improved, the requirement for fishing work in different oil wells is met, the fishing efficiency is improved, and the use cost is reduced.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a fishing tool for downhole operation. Background technique [0002] In the process of oil extraction, due to the complex formation conditions of some oil wells, the wellbore is in poor condition. During the logging construction, logging instruments or logging tools may get stuck or fall into the Problems in the well, resulting in engineering accidents and heavy losses. [0003] In the existing downhole fishing technology, the overshot is mostly used for fishing. When the staff puts the overshot into the well, because the diameter of the overshot is smaller than the diameter of the wellhead, the overshot is lowered and lifted. It is easy to shake and collide with the well wall, causing damage to the fishing tool and the well wall, and it is also easy to cause secondary fall-off of the salvaged tools and instruments, resulting in secondary damage; in addition, in the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/18
CPCE21B31/18
Inventor 张仕杰
Owner 大庆市奈固石油机械设备制造有限公司
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