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Deflectable Rotary Steerable Drilling Tool

A technology for rotary steerable drilling and tools, applied in directional drilling, drilling equipment, drill pipes, etc., can solve the problems of uncompactness, many internal cavities, complex structure, etc., and achieve lower requirements, less internal cavities, and large contact area. Effect

Active Publication Date: 2021-04-16
大庆众合创亿科技有限公司
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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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  • Deflectable Rotary Steerable Drilling Tool
  • Deflectable Rotary Steerable Drilling Tool
  • Deflectable Rotary Steerable Drilling Tool

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Embodiment Construction

[0033] 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.

[0034] Combine below Figure 1 to Figure 10 , the preferred embodiments of the present invention will be described in further detail.

[0035] Such as figure 1 As shown, it shows the comparison between the deflectable rotary steerable drilling tool 1 in the state of steady inclination and the state of deflection build-up; The drill string 3 is on the same axis and will not push against the well wall 4 in a targeted manner; the bottom right is the deflection state of the deflectable rotary steerable drilling tool 1, and the deflectable rotary steerable drilling tool 1 deviates from the drill bit 2 and the drill string 3 The axis where it is located protrudes downwards, and is set to p...

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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 deflection-rotation-steering drilling tool. Aiming at the problem: the existing rotary steerable drilling tool has a complex structure, many internal cavities and is not compact. Features of the solution: including a main shaft, an inner eccentric cylinder, an outer eccentric cylinder, a locking mechanism A, and a locking mechanism B. The main shaft is fixedly connected to the drill string upwards, and fixedly connected to the drill bit downwards. The inner eccentric cylinder is rotatably socketed on the main shaft; the outer eccentric cylinder is rotatably socketed on the inner eccentric cylinder; the locking mechanism A is set between the main shaft and the inner eccentric cylinder; the locking mechanism B is set on the Between the inner eccentric cylinder and the outer eccentric cylinder. Beneficial effects: 1. Two adjustable eccentric cylinders are used to push against the well wall to adjust the direction of the drill bit to achieve the purpose of steering; 2. The structure is compact and the internal cavity is small, which is beneficial to reduce the requirements for materials and improve the deflectable rotary steering drilling tool 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 deflection-rotation-steering drilling 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/24E21B7/04
CPCE21B7/04E21B19/24
Inventor 邱世军
Owner 大庆众合创亿科技有限公司
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