METHOD FOR DETERMINING ANGLES OF WELL DIRECTION AND INCLINOMETER Russian patent published in 2005 - IPC

FIELD: precise mechanical engineering.

SUBSTANCE: method includes mounting in body of well device three ferro-probes, three acceleration meters and temperature sensor, lowering well device into well, measuring components of full gravity force vector and geomagnetic field, measurement of temperature and compensation of temperature errors of sensors. Also, body of well device additionally has angular speed sensor and angular speed of device body rotation is measured along longitudinal axis and length of geophysical cable with correction according to magnetic marks on it, acceleration meters error is compensated, which error is caused by rotation of well device around longitudinal axis, and also error of placement of acceleration meters ad ferro-probes, measured value of gravity force is calculated and controlled, ad then well direction matrix is derived. Inclinometer has surface calculator 1, connected to input channel adapter 2, which through geophysical cable 4 is connected to well device 5 and immediately to block 3 for measuring length of geophysical cable 4. adapter has four inputs, receiver, galvanic coupling devices, voltage-frequency converter, current detector, transmitter and microcontroller. Well device has acceleration meters and ferro-probes, angular speed sensor, temperature sensor, voltage-frequency converters, microcontroller and transmitter.

EFFECT: higher precision, broader functional capabilities.

2 cl, 3 dwg