Tilting Head Rotary Steering Tool
A rotary steering and tool technology, used in directional drilling and other directions, can solve the problems of uncompactness, complex structure, and many internal cavities.
Active Publication Date: 2021-06-08
延安正弦波石油工程技术服务有限公司
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Problems solved by technology
[0005] The technical problem addressed by the present invention is: the existing rotary steerable drilling tool has a complex structure, many internal cavities, and is not compact
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[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0032] Combine below Figure 1 to Figure 6 , the preferred embodiments of the present invention will be described in further detail.
[0033] Such as figure 1 As shown, the section of the tilting head rotary steering tool passing through the axis of the drill string 3 and the axis of the tilting head rotary steering tool is described. The front end of the tilting head rotary steering tool is inclined to one side and deviates from the axis of the drill string 3 to cause a deflection effect. The tilted starting position 12 of the tilting head rotating guide tool is inside the outer cylinder 10, and the universal joint 5 passes through the tilting starting position 12 of the tilting hea...
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The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a tilting head rotary steering tool. Technical problem: the existing rotary steerable drilling tool has a complex structure, many internal cavities, and is not compact. Technical solution: The end of the rotary steering tool close to the drill bit deviates from the axis of the drill string, so that the drill bit is deflected to one side of the well wall. Technical features: including mandrel, universal joint, outer cylinder, base; the base is fixedly connected to the drill string; the base is connected to the universal joint, the universal joint is connected to the mandrel, and the mandrel is fixedly connected to the drill; A rotating socket base and a rotatable socket mandrel at the front end of the outer cylinder; the front end of the tilting head rotating guide tool is inclined to one side. Beneficial effects: the front end is tilted to one side, and the outer cylinder and the well wall are horizontally stationary, which can cause the drill bit to also tilt to one side of the well wall, thereby increasing the unilateral cutting of the drill bit and achieving the deflection effect; Less cavities are beneficial to reduce material requirements and improve working life.
Description
technical field [0001] The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a tilting head rotary steering tool. Background technique [0002] In the prior art, there are mainly two types of rotary steerable drilling tools: push-by type and point-to-point type. Among them, the push-to-type rotary steerable drilling tool is equipped with three retractable ribs evenly on the outer periphery of the tool, and the three ribs can be selectively pushed against the well wall in the set direction, causing the bit to deviate, thereby increasing the single-piece of the drill bit. Cutting on the side, realize the control of the drilling direction of the drill bit, and achieve the purpose of steering; however, the volume, especially the radius, of the steering drilling tool is limited, and the three retractable ribs make the structure complex and the internal cavity is large , high requirements on materials. [0003] The pointing rotary s...
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IPC IPC(8): E21B7/06
CPCE21B7/06
Inventor 邱世军
Owner 延安正弦波石油工程技术服务有限公司