METHOD AND DEVICE FOR MEASURING PROJECTION OF EARTH ROTATION ANGULAR VELOCITY VECTOR FOR DETERMINING AZIMUTH OF WELL AXIS Russian patent published in 1997 - IPC

Abstract RU 2085730 C1

FIELD: inclinometry. SUBSTANCE: angular parameters of well at any point of its trajectory can be measured both in open and cased hole. Method is based on measuring signals from gyroscopic sensor of angular velocity in initial position of sensitivity axis and after its turning to 90 deg. angle clockwise and counterclockwise and subsequent reverse actuation of gyromotor of angular velocity sensor with measuring signals in same positions. Inclinometric instrument has load-bearing container, turning frame, turning angle sensor (sine-cosine rotating transformer), sensor of angular velocity from one to three accelerometer, frame turning operating mechanism, commutation, reversing and filtration units, secondary power supply unit, and computer. Given in description are formulas for calculation of zenith, azimuth angles, and turning angle of inclinometer. EFFECT: high efficiency. 5 cl, 7 dwg

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RU 2 085 730 C1

Authors

Gavrilin B.N.

Eskevich L.P.

Zakharov A.A.

Zakharov K.A.

Znamenskij B.A.

Karelin V.Ju.

Kunitsyna T.N.

Klychnikova N.K.

Ljapunov A.G.

Saakjan A.A.

Tikhmenev V.B.

Fajnberg I.E.

Frankshtejn S.A.

Kozhevnikova T.N.

Dates

1997-07-27Published

1994-12-05Filed