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While-drilling debris recovery device

A technology for recovering debris and debris, which is used in earth-moving drilling, wellbore/well components, etc. It can solve the problems of inability to meet the needs of field operations, limited volume of recoverable debris, and complex structure, achieving no risk of falling off, The effect of improving chip recovery efficiency and improving mechanical strength

Pending Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of fishing cup is mainly suitable for casing drilling, and has a complex structure and limited volume of recoverable debris
[0006] The above-mentioned conventional fishing cups while drilling have certain problems in the mechanical strength of the tool, the efficiency of debris recovery, and the diameter of recoverable debris, especially in the current ultra-deep well drilling operation, which cannot meet the needs of field operations

Method used

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  • While-drilling debris recovery device

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with specific implementation methods and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0023] figure 1 A device for recovering debris while drilling according to an embodiment of the present invention is shown. As shown in the figure, the device for recovering debris while drilling includes a long rod body 1 , and the rod body 1 has a central axis X. The rod body 1 has a through hole 2 inside, and the through hole 2 extends from the first end 11 of the rod body 1 to the second end 12 of the rod body 1 along the axis X direction, so as to pass through the rod body 1 . The diameter of the through hole 2 is variable, that is, a difference in inner diameter is formed betwee...

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Abstract

The invention provides a while-drilling debris recovery device. The while-drilling debris recovery device comprises a rod body with a first end and an opposite second end, wherein a through hole penetrating from the first end to the second end is defined in the rod body in the axial direction of the rod body, the through hole is provided with a first inner diameter section close to the first end and a second inner diameter section which is located between the first inner diameter section and the second end and is narrowed relative to the first inner diameter section, and a debris recovery cylinder with an opening back to the first end is defined on the peripheral wall, surrounding the second inner diameter section, of the rod body.

Description

technical field [0001] The invention relates to the technical field of oilfield development and production, in particular to a recovery device for debris while drilling. Background technique [0002] With the further development of oilfield production technology, the oilfield operation area continues to expand, and the drilling and completion operation conditions are becoming more and more complex, especially the ultra-deep well drilling conditions are increasing year by year. The return of debris in ultra-deep well drilling operations has always been an important factor that hinders the smooth progress of the operation, especially in the gap between the connecting column or other operations, the rapid deposition of debris that has not returned or the instability of the well wall leads to more blocks, which is extremely difficult. It is easy to bury drilling tools, causing complications and even drilling accidents. [0003] There are some problems in some oil well debris re...

Claims

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Application Information

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IPC IPC(8): E21B27/00
CPCE21B27/00
Inventor 李文霞李双贵李林涛陈培亮易浩刘景涛李少安刘彪张俊王居贺李光乔钟文建赫英状孙伟光路飞飞
Owner CHINA PETROLEUM & CHEM CORP
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