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Rotary guiding mechanism and drilling equipment

A rotary steering and drill collar technology, applied in directional drilling and other directions, can solve the problems of large alternating stress, low applicability, easy fatigue damage, etc., and achieve the effect of improving applicability, stable operation and control, and stable operation.

Pending Publication Date: 2022-07-15
CHINA OILFIELD SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventors of the present application found in the research that the existing rotary steerable mechanisms often rely on the well wall for deflection and steering, and have certain requirements for the geological environment. There are problems of low applicability, complex structure and easy fatigue damage

Method used

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  • Rotary guiding mechanism and drilling equipment
  • Rotary guiding mechanism and drilling equipment
  • Rotary guiding mechanism and drilling equipment

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Embodiment Construction

[0036] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present application more clearly, and are therefore only used as examples, and cannot be used to limit the protection scope of the present application.

[0037]Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this application; the terms used herein are for the purpose of describing specific embodiments only, and are not intended to Limiting this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of the present applic...

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Abstract

The embodiment of the invention relates to the technical field of oil exploration and development, and discloses a rotary guiding mechanism and drilling equipment, the rotary guiding mechanism comprises a drill collar, a deflection assembly and a drill bit shaft assembly, an eccentric ring in the deflection assembly provides a structural inclination angle for the drill bit shaft assembly, and when the deflection assembly and the drill collar rotate in the opposite directions and at the same speed, the drill bit shaft assembly rotates. And the inclination direction of the drill bit to the ground is not changed. By means of the mode, the aim of directional drilling is achieved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of petroleum exploration and development, in particular to a rotary steering mechanism and drilling equipment. Background technique [0002] Rotary steerable drilling technology is a cutting-edge automated drilling technology that appeared in the 1990s, representing the highest level of drilling technology development in the world today. This technology has become an essential technology for complex ultra-deep directional wells and extended-reach horizontal wells. Compared with the directional drilling of sliding drilling, the rotary steerable drilling technology has the characteristics of rotating while sliding, and the control ability of the wellbore trajectory is more precise. Smooth, can effectively reduce friction torque and the occurrence of downhole complications, and improve drilling capacity. [0003] The inventor of the present application found in the research that the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/06
CPCE21B7/06
Inventor 菅志军尚捷杨恒灿张玉霖丁旭东贾建波朱伟红程怀标叶林志范东
Owner CHINA OILFIELD SERVICES