METHOD AND SYSTEM FOR DRILLING ACCELERATION BY USE OF DRILL STRING VIBRATION Russian patent published in 2015 - IPC E21B21/00 E21B10/60 

FIELD: process engineering.

SUBSTANCE: set of inventions relates to drilling. Proposed system comprises the components that follow. Downhole device for decreasing of drill string vibration and injection and superhigh-pressure drill bit for downhole injector. Said downhole device for decreasing of drill string vibration and injection includes high-pressure channel. Said superhigh-pressure drill bit comprises channel to transfer superhigh-pressure mud fluid. Said channel to transfer superhigh-pressure mud fluid comprises superhigh-pressure mud fluid channel, high-pressure hose and high-pressure stiff pipe. Said high-pressure channel communicates with superhigh-pressure mud fluid transfer channel. One end of said high-pressure hose is connected with said superhigh-pressure mud fluid channel while opposite end of said hose is connected with high-pressure stiff pipe. Opposite end of said high-pressure stiff pipe is connected with superhigh-pressure mud fluid nozzle. Method for decreasing of drill string vibration uses the source of power generated by pressure oscillation at drill bit body. Besides, it exploits mud fluid forced into downhole device for decreasing of drill string vibration and injection after shunting by shunting mechanism. Note here that major part of mud fluid is forced through common pressure nozzle. Mud fluid remainder is forced to power converter via intake one-way valve in said downhole device for decreasing of drill string vibration and injection. Power source and power produced thereby are used to release mud fluid minor portion via discharge one-way valve connecting the high-pressure channel. Besides, superhigh-pressure mud fluid nozzle generates superhigh-pressure jet to facilitate rock destruction directly or indirectly. Power converter is composed of seal assembly, injection cylinder and cylinder guide bush.

EFFECT: higher rate of drilling, stability, reliability and safety.

13 cl, 11 dwg