Guiding device for radial drilling

A technology of radial drilling and guider, which is applied in directional drilling and other directions, and can solve the problems that the technology cannot be implemented and ordinary guider cannot go down to the bottom of the well.

Pending Publication Date: 2018-04-06
大庆荣氏采油技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary guides cannot go down to the bottom of the well, and the technology cannot be implemented

Method used

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  • Guiding device for radial drilling
  • Guiding device for radial drilling
  • Guiding device for radial drilling

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Embodiment Construction

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that certain terms indicating the orientation or positional relationship are only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific The orientation, construction and operation in a specific orientation, therefore cannot be understood as a limitation of the present invention.

[0039] In the description of the pres...

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PUM

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Abstract

The invention discloses a guide for radial drilling, which comprises a main body; the main body includes two half cylinders, and the main body is a cylinder composed of two half cylinders symmetrically fastened; the outer diameter of the main body is 100 mm; the upper body of the main body The outer wall of the port is provided with a connecting thread, and there is a guide through hole in the shape of an inverted question mark "?" in the main body from the upper port to the bottom side wall; The directional keyway and two cylindrical positioning keys arranged symmetrically up and down. The radial drilling guide provided by the invention greatly facilitates direction testing and improves testing accuracy; meanwhile, it also has many technical advantages such as strong structural stability and high reliability.

Description

Technical field [0001] The invention relates to the technical field of petroleum equipment, in particular to a guide for radial drilling. Background technique [0002] After research, it is found that the diameter of the hydraulic jet guide for radial drilling in the oil field at this stage is 118 mm, which satisfies the 25 mm diameter drill bit connected to the cardan shaft to pass through and grind a 25 mm diameter hole on the downhole casing wall. Its trajectory in the guide is in the shape of an inverted question mark, which not only satisfies the right-angle guidance, but also satisfies the requirement that the hydraulic drilling tool drives the cardan shaft to achieve a fixed torque (above 150 Nm) and can drill the casing (N80, P110, etc.). [0003] In the late stage of oilfield development, for oil and water wells with casing completion, due to long-term exploitation and other geological reasons, problems such as casing deformation, misconnection, and casing leakage were cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04
CPCE21B7/04
Inventor 李德俊
Owner 大庆荣氏采油技术开发有限公司
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