Screw Drilling Tool with Circumferential Rotational Impulse

Abstract

The invention discloses a screw drilling tool with circumferential rotary thrust, which comprises a drill body and a drill seat assembly connected between the drill rod and the drill body and used to generate circumferential rotary impulse; the drill seat assembly includes fixed connections from back to front The rear connection pipe, the middle pipe body and the front connection pipe, the middle pipe body is provided with an impact assembly that cooperates with the circumferential transmission of the front connection pipe and a power part that is driven and matched with the impact assembly from front to back in the middle pipe body; the power part is a screw drill The screw of the tool; the design of the rotary punching bit is reasonable, the performance is reliable, and the circumferential vibration is generated, which eliminates the stick-slip and sticking of the drill bit and improves the ROP; the screw as a power structure makes the structure simple and the circumferential driving efficiency is high.

Description

technical field [0001] The invention relates to the field of drilling, in particular to a screw drilling tool with circumferential rotary 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, th...

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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

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