Well drilling fisher and method

An overshot and drilling technology, which is used in earth-moving drilling, wellbore/well components, etc., can solve the problems of increasing cost, affecting construction period, and time-consuming construction process, and achieving the effects of simple operation, strong adaptability and simple structure

Active Publication Date: 2018-11-20
BEIJING TALENT NEW ENERGY TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a drilling overhauler and method, which is used to solve or partly solve the current measures to salvage the fallen alloy teeth. The whole construction process is time-consuming, affecting the construction period and increasing the cost

Method used

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  • Well drilling fisher and method
  • Well drilling fisher and method
  • Well drilling fisher and method

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0029] This embodiment ...

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Abstract

The invention relates to the field of petroleum and discloses a well drilling fisher and a method. The well drilling fisher comprises a housing and a rubber block. The top of the housing is connectedwith a drill rod, the bottom of the housing is of an open shape, and the housing is internally and fixedly filled with a rubber block. By the adoption of the well drilling fisher and the method, and afished article can be pressed into the arranged rubber block and accordingly is discharged out of a drilled well. The well drilling fisher is novel and ingenious in design, simple in structure, easyand simple to operate, capable of effectively fishing various articles to be fished, strong in adaptability, high in fishing efficiency and capable of shortening fishing time and improving well drilling efficiency.

Description

technical field [0001] The invention relates to the petroleum field, in particular to a well drilling overshot and a method. Background technique [0002] DTH hammer drilling is a branch and extension developed on the basis of conventional air drilling. When drilling, the bottom hole circulation pressure does not exceed the weight of the air column and entrained cuttings, which reduces the formation stress to the greatest extent, so that the drill teeth can Impact crushing with the highest efficiency is the best drilling technology to reduce drilling costs and improve efficiency. [0003] The down-the-hole hammer is a kind of pneumatic impact tool (energy conversion device) with compressed air as the circulating power. The impact energy and impact frequency generated by it can be directly transmitted to the drill bit, and then rotated and driven by the drilling turntable to form a pulsating crushing ability for the bottom hole formation; at the same time, the compressed air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/00
CPCE21B31/00
Inventor 叶宏宇赫保仓
Owner BEIJING TALENT NEW ENERGY TECH DEV CO LTD
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