Oilfield downhole fishing device

A salvage device, oilfield well technology, applied in wellbore/well components, earthwork drilling and other directions, can solve problems such as inability to exit, inconvenient installation and disassembly, and increased maintenance costs, saving time, increasing time, and reducing manpower physical effect

Inactive Publication Date: 2014-08-06
杨仲辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the production of downhole operations in oil fields, it is common for tubing, packers, etc. to fall into the well, requiring professional fishing tools for fishing. In ordinary accidents, the commonly used fishing equipment is roughly divided into The four-grab overhauler for fishing deep well sucker rods, the mechanical oscillator for fishing deep well drill pipes, the new cutting knife for cutting tubular fallen fish, and the flow-through overshot device that can collect large pieces of rock debris and metal, and the falling objects during the fishing process It cannot be salvaged and withdrawn, which increases the difficulty of workover and maintenance costs, and the installation and disassembly of the existing technology is very inconvenient, time-consuming and labor-intensive

Method used

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  • Oilfield downhole fishing device
  • Oilfield downhole fishing device

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Embodiment Construction

[0012] refer to figure 1 A kind of oilfield downhole fishing device shown includes a fishing device body 1, a spear 2 arranged on the fishing device body 1, a joint 3 arranged on the fishing device body 1, and a fishing device body 1. The fishing head 4, the round slip 5 arranged on the fishing device body 1, and the scraping claw 6 arranged on the fishing device body 1, the fishing head 4 is provided with a guide cone 7, and the joint 3 is installed on the spear Above the rod 2, the joint 3 is provided with a lifting ring 8, the salvage device body 1 is provided with a slot 9, the scraper 6 is installed in the slot 9, and the scraper 6 is connected with a first spring 10 , the first spring 10 is against the body 1 of the fishing device, and the connection between the round slip 5 and the body 1 of the fishing device is provided with a second spring 11 .

[0013] The lance 2 is provided with a first locking block 12 for adjusting the floating of the round slip 5 , and the fis...

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Abstract

The invention provides an oilfield downhole fishing device which comprises a fishing device body, an anchor rod arranged on the fishing device body, a connector arranged on the fishing device body, a fishing head arranged on the fishing device body, a circular slip arranged on the fishing device body and a scraping claw arranged on the fishing device body. The fishing head is provided with a guide cone, the connector is installed on the anchor rod, a lifting ring is arranged on the connector, a clamping groove is formed in the fishing device body, the scraping claw is installed in the clamping groove and connected with a first spring, the first spring abuts against the fishing device body, and a second spring is arranged at the connecting position of the circular slip and the fishing device body. The oilfield downhole fishing device is simple in structure, convenient to use and install, simple to operate, low in cost, high in tensile load, high in impact resistance load, high in operating success rate, high in applicability, wide in application range, long in service life, safe and reliable.

Description

technical field [0001] The invention relates to an oilfield downhole fishing device. Background technique [0002] At present, in the production of downhole operations in oil fields, it is common for tubing, packers, etc. to fall into the well, requiring professional fishing tools for fishing. In ordinary accidents, the commonly used fishing equipment is roughly divided into The four-grab overhauler for fishing deep well sucker rods, the mechanical oscillator for fishing deep well drill pipes, the new cutting knife for cutting tubular fallen fish, and the flow-through overshot device that can collect large pieces of rock debris and metal, and the falling objects during the fishing process It cannot be salvaged, cannot be withdrawn, increases the difficulty of workover operations, and increases maintenance costs, and the prior art is very inconvenient to install and disassemble, and is time-consuming and laborious. Contents of the invention [0003] The technical problem t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/20
Inventor 杨仲辉
Owner 杨仲辉
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