FIELD: accurate instrument making.
SUBSTANCE: group of inventions relates to the field of precision instrument making, in particular to the gyro-inclinometer for conducting the inclination survey of previously drilled cased wells. Gyro-inclinometer for inclinometric survey has a cylindrical housing containing a rotary frame made with possibility of rotation around its axis of rotation relative to the cylindrical housing. Rotary frame axis of rotation coincides with longitudinal axis of cylindrical housing. Angle sensor is configured to measure angle of position of rotary frame relative to cylindrical housing. Frame drive is made with possibility of rotation of rotary frame and with possibility of its control by means of control signal received from computer. Triaxial accelerometer is arranged on the rotary frame so that one of its axes coincides with the axis of rotation of the rotary frame, and is configured to measure the angle of the rotary frame position relative to the apsidial plane of the well and the zenith angle. Single-axis angular velocity sensor is placed on the rotary frame and its sensitivity axis is perpendicular to the axis of rotation of the rotary frame and lies in the plane of the cross section of the cylindrical housing. Disclosed is a method of inclinometric survey in point mode of gyro-inclinometer operation and method of inclinometric survey in continuous mode of gyro-inclinometer operation.
EFFECT: increased operational reliability of the gyro-inclinometer and simplified design.
10 cl, 1 dwg
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