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Drilling tool salvaging device and method

The technology of a salvage device and a drilling tool, which is applied in the field of oil and gas drilling, can solve problems such as difficulty in salvaging the drilling tool, and achieve the effects of improving the salvage success rate, the salvage efficiency and the success rate, and the salvage process being simple and feasible.

Pending Publication Date: 2019-09-10
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a drilling tool fishing device and a drilling tool fishing method to solve the technical problem in the prior art that the drilling tool is difficult to fish when the fish top of the fishing tool is located at the belly or close to the well wall

Method used

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  • Drilling tool salvaging device and method
  • Drilling tool salvaging device and method
  • Drilling tool salvaging device and method

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The descriptions of "first", "second" and so on in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity or order of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] refer to image 3 , the present embodiment provides a drilling tool fishing device, including a buckle cone 100, a guide 200 and a hook 300, the guide 200 includes a hollow body 210 and a guide 220 for guiding the drill 400, the body 210 One end is connected to the button-making cone 100 , and t...

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Abstract

The invention provides a drilling tool salvaging device and method. The drilling tool salvaging device comprises a thread making cone, a guiding piece and a hooked piece; the guiding piece comprises ahollow body and a guiding part for guiding a drilling tool, one end of the body is connected with the thread making cone, and the other end of the body is connected with the hooked piece; and the guiding part is located at the end, away from the thread making cone, of the body so as to be matched with the hooked piece to right the drilling tool. According to the drilling tool salvaging device, the hooked piece is mounted on the side, away from the thread making cone, of the body of the guiding piece, meanwhile, the guiding part is arranged at the end, away from the thread making cone, of thebody, when the fish top of the salvaged drilling tool is located on the large belly part of a drill hole or tightly attached to the well wall, the drilling tool is hooked through the hooked piece of the drilling tool salvaging device to move so as to leave from the large belly part or the well wall, then under the cooperation guiding effect of the guiding part, the drilling tool is righted and smoothly enters the body of the guiding piece and the thread making cone, thus the drilling tool is conveniently subjected to thread making through the thread making cone and taken out from the drill hole, and the salvaging success rate is increased.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a drilling tool fishing device and a drilling tool fishing method. Background technique [0002] During the exploration and drilling process of oil and gas well engineering, the accidents of drill stuck, buried drill or dropped drill are often caused by complex formation conditions, improper operation and other emergencies, which not only prolongs the drilling construction period, but also increases the construction cost , And it brings hidden dangers to the safety production of engineering survey. Drill breakage accidents are more common in the process of drill sticking and drill drop accidents in the hole. The direct cause of the occurrence is that the drill tool in the hole is broken due to the strong rotation and pulling out of the drill tool during the construction process. At the same time, there are defects in the drilling tool itself, such as microcracks or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/12E21B31/18
CPCE21B31/12E21B31/18
Inventor 冯登姚洪锡郭建湖孟祥龙尤灏李巍
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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