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Orientation sensors are sensors that are used to measure the orientation angles (roll, pitch and yaw or toolface, inclination and azimuth) of the sensor and/or the surface to which they are mounted. These sensors are widely used in a variety of orientation determination applications including borehole logging, towed arrays and in directional and horizontal drilling applications.
Our most popular Directional Sensor for general purpose applications is the miniature 544 system with dimensions of 0.80" by 0.75" by 4.6". The models 547, 548, 750 and 850 directional sensors are well suited to high temperature drilling applications. The 750 and 850 systems offer a 0º C to 150° C operating temperature range while maintaining high accuracy over this entire range. The Model 650 Directional Module can be used to determine borehole inclination in boreholes with incination from 0 to 45°.
When applied to drilling applications, the 750 and 850 sensors can be delivered mounted in high pressure housings suitable for running in oil wells; in this case they are generally referred to as steering tools. Our Model 175 Short-radius Steering Tool System is a complete steering system for directional drilling and uses a steering tool with pressure barrel dimensions of 1.75" O.D. by 28" length. The 138 system is similar to the 175, but uses a steering tool with dimensions of 1.375" O.D. by 20.25" length.
The Model 751 Gamma Sensor measures the background gamma radiation in well bores and is used to detect the presence of porous petroleum reservoirs. These reservoirs are generally less radioactive then nonporous strata.
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