GEAR TESTING POSITION OF FACE Russian patent published in 1997 - IPC

FIELD: test and control of trajectory of driving of hole during directed drilling. SUBSTANCE: proposed gear includes measurement converter of azimuthal and zenith angles, angle of installation of deflecting tool, of length of hole, two units storing measured angles, five comparators, unit of coordinate re-calculation, unit setting discretization spacing, master unit of design length, unit setting required length, unit setting design angles, unit computing angle of setting of deflecting tool, unit of prediction of required intensity, unit of setting of limit intensity, two OR gates, adder, key and two recording units. EFFECT: high authenticity and accuracy of driving of hole and safety of drilling thanks to prevention of occurrence of emergency situations related to excess of intensity of distortion. 2 cl, 4 dwg