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Drill bit with circumferential rotary impulse

A drill bit and thrust technology, applied in the field of drilling, can solve the problems of low screw life, high cost, and unsatisfactory use effect.

Active Publication Date: 2021-09-14
北京众英泰科能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, high-frequency percussion-type deep well drilling speed-increasing tools have developed rapidly. The rocks in the deep formations of oil fields are hard and the grinding limit is high. When drilling with conventional roller cone bits, the footage of a single bit is small, and multiple trips are required and the ROP is low. ; When using screw for compound drilling, due to the high temperature in deep wells, the life of the screw is low and the use effect is not ideal; in addition, drilling with gas drilling technology can greatly increase the ROP, but it is easy to drill in the case of formation water Causes downhole complex situations, and there are many supporting equipment for gas drilling, and the cost is relatively high

Method used

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  • Drill bit with circumferential rotary impulse
  • Drill bit with circumferential rotary impulse
  • Drill bit with circumferential rotary impulse

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Embodiment Construction

[0018] figure 1 It is a structural schematic diagram of the present invention, figure 2 It is a structural schematic diagram of the front valve disc in the present invention, image 3 It is a structural schematic diagram of the driven disc in the present invention, Figure 4 It is a structural schematic diagram of the composite bearing in the present invention. As shown in the figure, the drill bit with circumferential rotational force in this embodiment includes a drill body and a drill seat assembly connected between the drill rod and the drill body and used to generate circumferential rotational force; The drill head assembly includes a fixedly connected rear connecting pipe 1, a middle pipe body 2, and a front connecting pipe 3 from back to front. The middle pipe body is sequentially provided with an impact assembly and The impact assembly drives the matching power assembly; the power assembly is a hydraulic power assembly; a disc valve assembly is also arranged between...

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Abstract

The invention discloses a drill bit with circumferential rotational force, which comprises a drill body and a drill seat assembly connected between a drill rod and the drill body and used to generate circumferential rotational force; Pipe body and front connecting pipe, the middle pipe body is provided with an impact assembly that cooperates with the circumferential transmission of the front pipe and a power assembly that drives and cooperates with the impact assembly from front to back; the power assembly is a hydraulic power assembly; the drilling fluid flow The stator drives the rotor to drive the rear valve disc to rotate at a high speed, and the impact hole on the rear valve disc and the liquid distribution hole of the valve on the front disc are periodically aligned and staggered to generate axial pressure pulses, which indirectly act on the drill body, so that the drill bit always Contact with the bottom of the well to protect the drill bit, while the circumferential impact force indirectly acts on the bit body through the lower joint, so that the bit body and the bottom of the well always maintain continuous high-frequency cutting, eliminating the stick-slip and sticking phenomenon of the drill bit , improving the rock-breaking efficiency.

Description

technical field [0001] The invention relates to the field of drilling, in particular to a drill bit with circumferential rotational impulse. Background technique [0002] In recent years, high-frequency percussion-type deep well drilling speed-increasing tools have developed rapidly. The rocks in the deep formations of oil fields are hard and the grinding limit is high. When drilling with conventional roller cone bits, the footage of a single bit is small, and multiple trips are required and the ROP is low. ; When using screw for compound drilling, due to the high temperature in deep wells, the life of the screw is low and the use effect is not ideal; in addition, drilling with gas drilling technology can greatly increase the ROP, but it is easy to drill in the case of formation water It causes downhole complex situations, and there are many supporting equipment for gas drilling, and the cost is relatively high. Contents of the invention [0003] In view of this, the purp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/16F16C19/50
CPCE21B4/16F16C19/50
Inventor 史洪军马哲罗昭素郭子郡
Owner 北京众英泰科能源科技有限公司
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