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Sliding push-the-bit type steering drilling tool

A technology of directional drilling and tools, which is 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 popularization, and achieve broad field application prospects, reliable work, and reduced The effect of production costs

Active Publication Date: 2012-10-03
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 now be further described with reference to the drawings.

[0015] When using the present invention for directional drilling construction, the mandrel [14] is in a stepped shape with a flow channel processed along the axis, a plug groove [4] is processed on the upper part, and a pressure guiding hole [10] is processed in the middle, and the bearing [ 2] Sleeve with the hollow cylindrical sliding sleeve [3] and mandrel [14] in sequence, and then connect the adapter [1] to the upper end of the mandrel [14]. The middle of the sliding sleeve [3] is evenly processed around its axis. Piston cylinder [13], the diameter of the guide piston [11] is greater than the diameter of the stable piston [16], the inner diameter of the guide piston cylinder liner [12] is greater than the inner diameter of the stable piston cylinder liner [15], and the guide piston [11] and the guide After the piston cylinder liner [12], the stable piston [16] and the stable piston c...

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PUM

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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 the formation rock and form a channel, that is, a wellbore, for the development of underground resources. Therefore, the quality of the wellbore is directly related to the success or failure of underground resource development and the level of efficiency, and it is necessary to control the downhole processes such as rock-breaking drilling and extension of the wellbore. [0003] Wellbore trajectory control is an extremely important aspect of downhole process control technology. It refers to steering the wellbore and controlling the wellbore to extend to the predetermined formation target according to the designed well inclination and orientation. In the development process of modern drilling engineering, a variety of tools and technologies for controlling well trajector...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04
Inventor 倪红坚
Owner 倪红坚