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Downhole Rotary Steering Device

A technology of rotary steering and driving device, which is used in directional drilling, wellbore/well components, measurement, etc., which can solve the high requirements of rotary steering system orientation and slip steering, large axial vibration and swing of drilling tools, and signal transmission. Low efficiency and other problems, to achieve the effect of significant speed-up effect, reasonable structure, and improved safety and reliability

Active Publication Date: 2022-03-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an underground rotary steerable device, which overcomes the deficiencies of the prior art above, and can effectively solve the high requirements for orientation and slip steering of the rotary steerable system, large axial vibration and swing of the drilling tool, and low signal transmission efficiency. , The problem of poor system security

Method used

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  • Downhole Rotary Steering Device
  • Downhole Rotary Steering Device
  • Downhole Rotary Steering Device

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Embodiment Construction

[0057] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0058] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of front, rear, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.

[0059] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0060] as attached Figure 1-23 As shown, the downhole rotary steerable device includes a mandrel 1, a lower joint 2, a non-rotating outer cylinder 3, an upper electronic bin assembly, a lower electronic bin assembly, a resolver assembly, an upper bearing assembly, a lower ...

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Abstract

The invention relates to the technical field of petroleum drilling and production, and is a downhole rotary steering device, comprising a mandrel, a lower joint, a non-rotating outer cylinder, an upper electronic bin assembly, a lower electronic bin assembly, a resolver assembly, and an upper bearing assembly , Lower bearing assembly and hydraulic drive. The invention has a reasonable and compact structure, and can transmit the power and data signals in the two-way communication module or MWD system downwards from the upper electronic warehouse assembly, and reduce the axial vibration and swing of the invention through the upper and lower bearing assemblies , the lower communication module transmits the power and data signals to the hydraulic drive device, so that the lower joint is always on the predetermined wellbore trajectory, reducing the requirements of the orientation and sliding guidance of the present invention, and the hydraulic drive device then feeds back the motion status signal upwards To the ground for the operator to operate, the actual application of vertical drilling technology, the speed increase effect is remarkable, the safety and reliability of the system are improved, the circuit complexity and system loss are reduced, and the transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, and relates to a downhole rotary steering device. Background technique [0002] Rotary steerable drilling technology is a high-tech drilling technology that emerged in the 1990s. It is currently recognized as the most advanced drilling technology. The rotary steerable system can greatly increase the ROP, especially in the application of horizontal wells and extended reach wells. More so, the system can significantly reduce the friction of the drilling tool, reduce the requirements for orientation and slip guidance, and reduce the axial vibration and swing of the drilling tool. As the core technology for the economical and effective development of long horizontal sections, unconventional and ultra-deep oil and gas reservoirs, rotary steerable tools are an effective guarantee for increasing speed, quality and production. Improving transmission speed and drilling efficiency, while being ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B47/12
CPCE21B7/04E21B47/12
Inventor 张军锋李晓军罗维陈嘉陵王飞跃马红滨何新航
Owner BC P INC CHINA NAT PETROLEUM CORP
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