Rotary pushing type guiding drilling tool

A technology for directional drilling and tools, applied in directional drilling and other directions, can solve the problems of high requirements for supporting tools, processes and equipment, high use and maintenance costs, and difficulty in general promotion, achieving broad field application prospects, reliable work, and low cost The effect of production costs

Active Publication Date: 2007-09-19
倪红坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the automatic closed-loop steering drilling system is a high-tech product integrating electromechanical and hydraulic systems, it has a c

Method used

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  • Rotary pushing type guiding drilling tool

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Embodiment Construction

[0013] The present invention will now be further described with reference to the accompanying drawings.

[0014] When the present invention is used for steerable drilling construction, the upper and lower ends of the stabilizing block [20] are respectively connected with the upper mandrel [3] and the lower mandrel [6], and the axis of the stabilizing block [20] is connected with the upper mandrel [3] The axis of the lower mandrel [6] does not coincide, put the bearing [4] into the bearing fixing ring [19], and then put the bearing [4] into the upper mandrel [3] and the lower mandrel [6], the rectifier head [2] ] is connected to the upper end of the upper mandrel [3], the middle outer surface of the guide shaft [9] is machined with a guide groove [22], the guide shaft [9] is loaded into the guide cylinder [7], and the dial [10] is fixed on the The inner wall of the lower end of the guide cylinder [7] extends into the guide groove [22] on the guide shaft [9], the spring [21] is ...

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Abstract

Rotary pull-against type guided drilling tool, comprising crossover sub, upper mandrel, bearing, casing, lower mandrel, guiding tubular, guiding shaft, guiding valve, plunger, throttling rod, throttling ring, bit sub and stabilizing block. Principle of the invention is that by using pressure difference formed by circulation of drilling fluid in drill stem inside and outside, the plunger is motivated against borehole wall, periodical side force is applied to the drill head, and the force direction can be adjusted by the guiding valve, borehole deviation and orientation of the borehole is also regulated and controlled. Advantages of the guided drilling tool are that structure is simple, operation is reliable, which has good controllability and adaptability. Drilling efficiency and well body quality can be effectively improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to a matching device for drilling oil and natural gas. Background technique [0002] The fundamental purpose of drilling is to use rock-breaking drilling tools to break the formation rock and form a channel for the development of underground resources, that is, a wellbore. Therefore, the quality of wellbore is directly related to the success or failure of underground resource development and the level of efficiency, and it is necessary to control downhole processes such as rock-breaking drilling and extending wellbore. [0003] Wellbore trajectory control is an extremely important aspect of downhole process control technology. It refers to guiding the wellbore and controlling the wellbore to extend to the predetermined formation target according to the designed inclination and orientation. In the process of development of modern drilling engineering, a variety of tools and techniques for controlling wellbore tr...

Claims

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Application Information

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IPC IPC(8): E21B7/04
Inventor 倪红坚
Owner 倪红坚
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