FIELD: well tilt measurement, in particular, technology for determining spatial position of well borehole by means of ferro-probe tilt meter.
SUBSTANCE: tilt meter contains triads of mutually orthogonal accelerometers rigidly connected to non-magnetic body as well as triads of mutually orthogonal magnetic field strength indicators. Two indicators are mounted at an angle to longitudinal axis of body and turned relatively to plane formed by longitudinal axis of body and sensitivity axis of third indicator for angle, close to 45°. Third sensor is positioned perpendicularly to longitudinal axis of body. Such positioning of magnetometers allows increasing precision of measurements of spatial position of well borehole.
EFFECT: provision of greatest depth of signal circulation of magnetometers during turn of body of inclinometer around longitudinal axis for separating interference, caused by influence of magnetized elements of drilling composition, and useful signal about magnetic azimuth of well borehole.
1 dwg
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