DEVICE FOR DETERMINATION OF BOREHOLE INCLINATION ANGLE AND POSITION OF DEFLECTING TOOL DURING DRILLING Russian patent published in 2002 - IPC

FIELD: geophysical well logging. SUBSTANCE: device may be used in development of inclinometric devices for measurement during drilling, azimuth, zenith angle of well and angle of deflecting tool setting in orientation of instrument in well. Device has excitation generator, azimuth transducer in the form of three orthogonal flux-gate meters rigidly secured to device body, transducer of deflecting tool setting angle in the form of sine-cosine synchro-resolver installed in float pendulum, two switches, control unit, and A/D converter. Device is additionally provided with three accelerometers whose sensitivity axes are mutually orthogonal and coaxial to sensitivity axes of flux-gate meters; low-pass filters; temperature sensor; and series adapter. Outputs of accelerometers are connected via low-pass filters and temperature sensor to additional inputs of switch. Connected to output of A/D converter is input of series adapter whose output is connected via unit of communication with surface device and decoding unit of personal computer. EFFECT: higher accuracy of determination of orientation angles in drilling within wide range of temperatures and extended field of application of device in drilling in high altitude. 1 dwg