WIRELESS COMMUNICATION LINK WITH BOTTOM-HOLE OF WELL IN TURBODRILLING Russian patent published in 1998 - IPC

FIELD: bore-hole drilling technology. SUBSTANCE: this relates to simultaneous transmission of information on mode of dynamic interaction of drilling bit and bottom-hole and about rotation speed of drilling bit in bottom-hole in process of drilling. Above process is achieved due to combined usage of intermediate mechanical communication link which is represented by shaft of turbo-drill, and hydraulic communication link. Oscillations of drilling bit and its rotation speed are transmitted into hydraulic passage of well and appropriate values are recorded at well head in the form of pulsing pressure of drilling fluid. Transmission of oscillations of drilling bit and its rotation speed is realized through turbo-drill shaft and data input unit which is rigidly secured on upper end of turbo-drill shaft by means of standard half-coupling. Used as data input unit is circular steel disk made of abrasive-resistant steel. Longitudinal axis of turbo-drill shaft passes through center of disk. Upper plane of steel disk is inclined to longitudinal axis of turbo-drill shaft. Angle of incline of upper plane of steel disk in relation to lower plane of steel disk is equal to 5-10 deg. EFFECT: higher efficiency. 2 dwg