Compass Tensor MWD Directional Module is modular assemblies used in downhole drilling applications where minimal power supply is available while providing accurate and stable survey measurements. The assembly contains a Single Port MPU, Triple Power Supply, and a Digital Orientation Module. The Single Port MPU is a modular micro-controller assembly based on the Motorola MC68HC11 microprocessor implementing GE Power Systems’ qMIX™ communications protocol (qMIX/11™). The Triple Power Supply provides regulated power for the complete assembly, operating off of DC power source Lithium Battery packs.
Compass utilizes sensor technology to provide a digitized output directional measurement solution. Designed for the demands of the oil and gas drilling environments, the Digital orientation Module consists of a three-axis magnetometer, three single-axis accelerometers, and associated electronics which are mounted on a rigid one-piece chassis. Calibration data is provided with each unit. Configurations are available with a downhole Recorder board and maximum operating temperatures to 150°C (Low Temp) or 175°C (High Temp). The sensor is designed to allow direct connection to a microprocessor based data acquisition system via dedicated serial interface connections.
They consume minimal power, meeting the downhole environment requirements.