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Full-rotation sense type guide tool and guide method

A pointing, full-rotation technology, applied in drilling equipment and methods, directional drilling, earthwork drilling and production, etc., to improve the efficiency of steering operations and the control accuracy of borehole trajectory, improve the efficiency and precision of operations, and improve the efficiency of steering drilling operations and wellbore trajectory control accuracy

Active Publication Date: 2015-04-08
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the drill-pointing rotary steerable tool is still blank in China.

Method used

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  • Full-rotation sense type guide tool and guide method

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Embodiment Construction

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] figure 1 It is a schematic diagram of a rotary steerable system according to a specific embodiment of the present invention.

[0026] The rotary steerable system of the present invention is composed of a ground monitoring subsystem, a two-way communication subsystem and an underground steering subsystem, such as figure 1As shown, the downhole basic configuration of the rotary steerable system of the present invention includes: information transmission and measurement-while-drilling unit 1, wireless short transmission receiving / sending unit 2, mud motor unit 3, wireless short transmission sending / receiving unit 4, docking and expansion unit 5 , a power supply unit 6 , a measurement and control unit 7 , and a guiding execution unit 8 .

[0027] exist figure 1 Among them, ① indicates directional parameter measurement, ② indicates...

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Abstract

Disclosed are a full-rotation sense type guide tool and guide method. According to the full-rotation sense type guide tool and guide method, the control mode and guide parameters of the guide tool can be determined, a hole trajectory is automatically controlled, the work efficiency of the guide tool is improved, and the guide control requirement of directional drilling is met. The guide tool is composed of an abutting and expanding unit, a power supply unit, a measuring control unit and a guide execution unit from top to bottom. Control of the rotation guide tool can be optimized, and closed-loop guide control can be achieved; the guide drilling operation efficiency and the hole trajectory control precision can be improved; and the control requirement of a large extended reach well, a horizontal well of a complex geologic structure and a geosteering drilling track can be met.

Description

technical field [0001] The invention relates to a directional drilling steering tool and a steering method, in particular to a full-rotation pointing steering tool and a steering method. Background technique [0002] In the prior art, the rotary steerable tool realizes the steering control of the wellbore trajectory under the rotating state of the drill string, which overcomes the defects of excessive friction, debris deposition and small limit displacement in the sliding steerable operation, and can greatly improve the wellbore. Quality, drilling efficiency and drilling safety, so it is widely used in the steering construction operations of extended reach wells, horizontal wells and three-dimensional complex structure wells, and is one of the typical advanced drilling equipment today. [0003] At present, rotary steerable tools can be divided into two basic types according to the guiding method: the drill bit pushing type and the bit pointing type, and according to the powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/08E21B47/00
CPCE21B7/04E21B44/00E21B45/00E21B47/00E21B47/12
Inventor 唐雪平盛利民魏志刚彭烈新弓志谦陈文艺张连成曹冲石荣禹德洲王鹏
Owner BC P INC CHINA NAT PETROLEUM CORP
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