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Static pushing type rotating guide device

A rotary-steering, static technology, applied in the field of oil drilling, can solve the problems of unfavorable drill bit drilling, reduce the moment of inertia, reduce energy storage, etc., and achieve the effect of facilitating popularization and application, increasing the moment of inertia, and increasing energy storage

Active Publication Date: 2016-04-27
CHINA PETROCHEMICAL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are also significant disadvantages in existing static push-to-type rotary guides
Although the static pushing-type rotary steerable device can provide accurate and sufficient deflection force in the build-up section, its moment of inertia will be reduced when there is no need to provide deflection force in the slope stabilization section, vertical section, and horizontal section. Its internal energy storage is not conducive to the efficient and stable drilling of the drill bit, especially in deep wells and extended-reach wells.

Method used

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] figure 1 Shown is a static push-on rotary guide device 100 (hereinafter referred to as the rotary guide device 100 ) according to the present invention. The rotary steering device 100 can drive the drill bit or the drill string to smoothly move in direction, so as to generate a steering effect.

[0026] The rotary guide 100 comprises a mandrel 12 having a central channel 12a. The upstream end of mandrel 12 ( figure 1 The end near the left side) can be connected with the drilling tool or mud motor through the thread structure, while the downstream end ( figure 1 The end near the right side in the middle) can also be connected with the adapter of the drill pipe or the drill bit through the thread structure. A circumferential groove 12 b is formed on the outer wall of the mandrel 12 . A circumferential groove 12b may be located at the center of the mandrel 12, whic...

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Abstract

The invention relates to a static pushing type rotating guide device, which comprises a mandrel, an outer sleeve and a clutch, wherein the mandrel is provided with a center passage; a peripheral groove is formed in the outer wall of the mandrel; the outer sleeve is connected in the peripheral groove in a sleeving way and can independently rotate; and the clutch can cut off or transmit the power input from the mandrel to the outer sleeve. The static pushing type rotating guide device has the advantages that when deflection power does not need to be provided in a stable inclined section, a vertical section and a horizontal section, the rotation inertia cannot be reduced; and the inside energy storage cannot be reduced, so that the efficient and stable drilling of a drill bit positioned at the downstream can be facilitated.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a static pushing type rotary steering device. Background technique [0002] In the field of drilling technology, the rotary steerable drilling system has been widely used. The rotary steerable system can adjust the well deviation and azimuth in real time according to the needs of trajectory control during the rotary drilling process. It has the advantages of smooth hole, small friction, small torque, large drilling limit displacement, few drilling accidents, fast drilling speed and low drilling cost, so it can meet the requirements of high-difficulty special process wells such as horizontal wells, extended-reach wells and 3D multi-target wells. Steering drilling requirements. [0003] The working mechanism of the rotary steerable drilling system is to rely on the offset guide mechanism of the rotary steerable device to make the drill bit or the drill string deviate in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04
CPCE21B7/067E21B7/06E21B17/006E21B17/20
Inventor 杨锦舟肖红兵吴仲华朱杰然韩来聚李作会周延军唐志军
Owner CHINA PETROCHEMICAL CORP
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