ARRANGEMENT OF BOTTOM PART OF DRILLING STRING FOR DIRECTED DRILLING OF WELL Russian patent published in 2000 - IPC

FIELD: bore-hole drilling equipment. SUBSTANCE: invention relates to tools used for drilling inclined-directed bore-hole of well by means of bottom-hole motor. Arrangement of bottom part of drilling string for directed drilling includes drilling bit connected by means of pivoted coupling to shaft of bottom-hole motor. Coupling is located inside adapter which is connected at angle to body of bottom-hole motor. Body of motor is connected with non-magnetic weighted drilling pipe. Located inside drilling pipe are measuring module, microprocessor, and power supply unit. Non-magnetic pipe is suspended from drilling pipes by means of swivel connection. Located in upper part of non-magnetic pipe is disconnector of its couping with drilling pipes with detent. Application of aforesaid arrangement allows for increasing accuracy of installing whipstock within entire circular sector of azimuth direction from 0 to 360 deg directly during drilling process without intervention of operator that is automatically. EFFECT: higher efficiency. 2 cl, 5 dwg