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Dynamic Deflectable Rotary Steerable Tool

A rotary steerable and dynamic technology, applied in the field of drilling tools, can solve the problems of uncompactness, complex structure, and many internal cavities.

Active Publication Date: 2021-06-08
西安长庆同欣石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Dynamic Deflectable Rotary Steerable Tool
  • Dynamic Deflectable Rotary Steerable Tool
  • Dynamic Deflectable Rotary Steerable Tool

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Embodiment Construction

[0034] 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.

[0035] Combine below Figure 1 to Figure 9 , the preferred embodiments of the present invention will be described in further detail.

[0036] like figure 1 As shown, it shows the comparison between the dynamic deflectable rotary steerable tool 1 in the stable state and the deflection state; the upper left is the dynamic deflectable rotary steerable tool 1 in the stable state, the drill bit 2 and the drill string 3 are on the same axis, No targeted unilateral cutting of the well wall; the bottom right is the deflection state of the dynamic deflectable rotary steering tool 1, the drill bit 2 deviates from the axis of the drill string 3, and protrudes upwards, thereby increasing the sin...

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Abstract

The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a dynamic deflectable rotary steering tool. Aiming at the problem: the existing rotary steerable drilling tool has a complex structure, many internal cavities and is not compact. Adoption plan: use two adjustable eccentric cylinders fixed in the circular sleeve to set the drill bit to one side of the well wall. Included features: main shaft, inner eccentric cylinder, outer eccentric cylinder, circular sleeve, driving mechanism A, locking mechanism A, locking mechanism B, locking mechanism C, driving mechanism B; inner eccentric cylinder rotatable sleeve Connected to the main shaft; the outer eccentric cylinder is rotatably socketed on the inner eccentric cylinder; one end of the circular sleeve is rotatably socketed on the outer eccentric cylinder, and the other end of the circular sleeve is fixedly connected to the drill string; beneficial effect: use Two adjustable eccentric cylinders are adjusted to offset the drill bit, thereby increasing the single-side cutting of the drill bit and achieving the purpose of guiding.

Description

technical field [0001] The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a dynamic deflectable 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 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04
CPCE21B7/04
Inventor 邱世军
Owner 西安长庆同欣石油科技有限公司
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