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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

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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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Abstract

The invention discloses a guiding device for radial drilling. The guiding device comprises a main body which comprises two half-cylinder bodies, and the main body is a cylinder formed by symmetrical fastening of the two half-cylinder bodies. The outer diameter of the main body is 100 mm, and a connecting thread is arranged on the outer wall of an upper end opening of the main body. A through inverted- -shaped guiding through hole is formed in the side wall inside the main body from the upper end opening to the bottom end, and a vertical long-strip-shaped positioning key groove and two cylinder-shaped positioning keys which are symmetrically arranged in the up-down direction are formed / arranged in / on the positions, located at the guiding through hole, of the inner wall of the upper end opening of the main body. According to the guiding device for radial drilling, direction testing is extremely facilitated, and the testing accuracy is improved; and meanwhile, the guiding device has the multiple technical advantages of being high in structural stability, high in reliability and the like.

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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