DEVICE FOR ANGULAR BOREHOLE POSITION DETERMINATION (VARIANTS) Russian patent published in 2005 - IPC

FIELD: measuring equipment, particularly for petroleum geophysics, in geomagnetic navigation to determine angles of heading, roll and pitch of movable objects.

SUBSTANCE: device in accordance with the first embodiment comprises non-magnetic body, three-component magnetometers. Each magnetometer includes magnetosensitive sensor. Device also has recording unit and computer means connected to the recording unit. One magnetometer, recording unit and computer means are arranged at borehole head, exes on magnetosensitive sensor of above magnetometer are rigidly linked with Geographical Reference System. Device in accordance with the second embodiment additionally has current stabilizer with outputs connected to inputs of magnetosensitive sensors of the first and the second magnetometers. The stabilizer is also located at borehole head.

EFFECT: effect: reduced influence of geomagnetic field and noncollinearity of three component sensor axes on the angular position determination, reduced number of measuring tools.

2 cl, 1 dwg