DEVICE FOR MEASUREMENT OF INCLINATION AND DRIFT ANGLES OF WELLS Russian patent published in 2012 - IPC E21B47/02 E21B47/22 

FIELD: oil and gas industry.

SUBSTANCE: device for measurement of inclination and drift angles of wells includes televiewer and measuring instrument arranged against it, measuring instrument has housing and sensor of inclination and drift angles, available for observation, located in insulated container. Insulated container is attached to cable with possibility of its delivery to non-magnetic housing of drill column and is provided with point of fixed attachment to non-magnetic housing, and also wire communication channel of sensor with surface receiver recorder. Insulated container is provided with videoamplifier, level transducer (HF-keys), level transducer (LF-keys), synchroniser. Between measuring instrument and televiewer there are illuminator and optical objective installed. At that measuring instrument is filled with silicon fluid. Sensor of inclination and drift angles is designed as a measuring unit installed on roller step bearing and is provided with perpendicular to one another scales of drift angles with attached to it from below two parallel magnets and scales of inclination angles with offset centre of gravity. At that surface receiver recorder is made of linear amplifier, power supply unit and video monitor.

EFFECT: improving accuracy of measurement of well path and position of steerable motor with high accuracy, reliability and simultaneous reduction of time interval for data receiving.

1 dwg