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Underground drilling tool with self-locking and unstucking function

A jam-relief and functional technology, which is applied to the driving device for drilling in the borehole, drilling equipment, earthwork drilling and production, etc. It can solve the problems that affect the drilling efficiency, the drill bit cannot run, and the rotational power cannot be transmitted.

Pending Publication Date: 2021-03-05
SICHUAN DEEP & FAST OIL DRILLING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the drill bits connected with the above three kinds of drilling tools often appear stuck during the drilling process due to the collapse or loss of blocks at the bottom of the well. How to quickly release the drill bit is the current research direction of downhole tools; Taking the screw drilling tool as an example, the drill bit is usually released by rotating the screw drilling tool casing to transmit the rotational power, but in general, since the motor is composed of a rubber stator and a metal rotor, turning the screw drilling tool casing will cause the motor stator to Slipping occurs with the rotor, which not only damages the rubber stator, but also prevents the rotational power from being transmitted to the drill bit, so that the drill bit still cannot operate, and ultimately affects drilling efficiency

Method used

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  • Underground drilling tool with self-locking and unstucking function
  • Underground drilling tool with self-locking and unstucking function
  • Underground drilling tool with self-locking and unstucking function

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present invention. In addition, it should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0022] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0023] Such as figure 1 , figure 2 , image 3 As shown, the present invention provides a downhole drilling tool with the function of self-locking and unlocking, including a coaxially installed casing 1, a transmission shaft 2 and a clutch 3, and...

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Abstract

The invention discloses an underground drilling tool with a self-locking and unstucking function, and relates to the technical field of well drilling. The drilling tool comprises a shell, a transmission shaft and a clutch, wherein the shell 1 and the clutch 3 are coaxially arranged, the clutch is arranged between the shell and the transmission shaft, the clutch comprises an inner ring and an outerring, the outer ring is fixed to the shell through a positioning pin, the inner ring is fixedly connected with the transmission shaft through a key, a mounting groove is formed in the inner wall of the outer ring, the depth of the mounting groove in the diameter direction is gradually increased in the rotating direction of the transmission shaft, a roller body is further arranged in the mountinggroove, and a spring connected with the roller body is further arranged on the groove wall of the mounting groove. When the bottom hole collapses and the drill bit gets stuck, the drill bit can be quickly unstuck, a pump can be quickly started after the drill bit is unstuck, normal drilling is recovered, and the drilling efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a downhole drilling tool with self-locking and jam-releasing functions. Background technique [0002] In the prior art, there are three kinds of downhole power devices for petroleum drilling, namely screw drilling tools, turbo drilling tools and electric drilling tools; due to the improvement of structure, the application of new materials and new technologies, these three kinds of downhole drilling tools have their own advantages . Among them, the turbo drilling tool uses high-pressure drilling fluid as the energy source to drive the drill bit downhole to complete the drilling work; the screw drilling tool makes the mud pumped by the mud pump flow through the bypass valve into the motor, and a certain pressure is formed at the inlet and outlet of the motor. The pressure difference pushes the rotor to rotate around the axis of the stator, and transmits the speed and torque to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/02E21B4/00
CPCE21B4/02E21B4/006
Inventor 李恒黄伟李茂孔亚军钟文
Owner SICHUAN DEEP & FAST OIL DRILLING TOOLS CO LTD
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