Underground rotary guiding device

A technology of rotary steerable and driving devices, which is applied in directional drilling, wellbore/well components, measurement, etc., and can solve the problem of large axial vibration and swing of drilling tools, high requirements for orientation and slip steering of rotary steerable systems, and system safety gender issues

Active Publication Date: 2020-10-13
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • 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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  • Underground rotary guiding device
  • Underground rotary guiding device
  • Underground rotary guiding 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, in particular to an underground rotary guiding device. The device comprises a mandrel, a lower connector, a non-rotary outer barrel, an upper electronic bin assembly, a lower electronic bin assembly, a rotary transformer assembly, an upper bearing assembly, a lower bearing assembly and a hydraulic driving device. The device disclosed by the invention is reasonable and compact in structure, power electricity and data signals in a two-way communication module or an MWD system can be transmitted downwards through the upper electronic bin assembly, axial vibration and swing of the device are reduced through the upper bearing assembly and the lower bearing assembly, a lower communication module transmits the power electricity and the data signals to the hydraulic driving device, so that the lower connector is always located at a predetermined well track, the directional and sliding directing requirements of the device are reduced, the hydraulic driving device feeds back a moving state signal to the ground upwards for an operator to operate, the vertical drilling technology is practically applied, the speed increasing effect is remarkable, the safety and reliability of the system are improved, the circuit complexity and the 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 Applications(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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