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Sliding push-the-bit type steering drilling tool

A directional drilling and tool technology, applied in directional drilling and other directions, can solve problems such as 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: 2007-10-24
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 complex structure, high requirements for supporting tools, processes and equipment, and high maintenance costs, making it difficult to popularize

Method used

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  • Sliding push-the-bit type steering drilling tool
  • Sliding push-the-bit type steering drilling tool

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be further described now in conjunction with the accompanying drawings of the description.

[0015] When using the present invention for directional drilling construction, the mandrel [14] is in a stepped shape, a flow channel is processed along the axis, a lock plug groove [4] is processed in the upper part, and a pressure guide hole [10] is processed in the middle part, and the bearing [ 2] Fit the hollow cylindrical sliding sleeve [3] and the mandrel [14] sequentially, then connect the conversion joint [1] to the upper end of the mandrel [14], and the middle part of the sliding sleeve [3] body is evenly processed around its axis. Piston cylinder [13], the diameter of guide piston [11] is greater than the diameter of stable piston [16], the internal diameter of guide piston cylinder liner [12] is greater than the internal diameter of stable piston cylinder liner [15], guide piston [11] and guide After the piston liner [12], the stabilizing p...

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Abstract

Sliding push-lean guiding drilling well instrument includes conversion adaptor, sleeve, lock plug, guiding piston, stable piston and spindle, the principle is: using the pressure difference formed by the drilling fluid circulated in or out the drilling string, pushing the piston in different diameter to lean on the well wall, applying a continuous lateral resultant force when the drill head rotates, breaks stones and drills into stones, achieving the adjust and control of well bore trace through adjusting the position of piston pushing near well wall. The guiding drilling well instrument has characteristics of simple structure, reliable work, high controllable performance, strong adaptability and reasonable drill force, it can effectively improve the drilling efficiency and well body quality, reduce production costs and has the very broad on-site application prospects.

Description

technical field [0001] The invention belongs to a supporting device for oil and natural gas drilling. Background technique [0002] The fundamental purpose of drilling is to use rock-breaking drilling tools to break formation rocks and form channels for the development of underground resources, that is, boreholes. Therefore, the quality of wellbore is directly related to the success or failure and efficiency of underground resource development, so it is necessary to control the 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 well deviation and azimuth. In the process of development of modern drilling engineering, a variety of tools and technologies for controlling wellbore trajectory ha...

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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