The BDV42 probe is used to determine the exact drilled trajectory of a borehole
in the subterranean space. Boreholes drilled close to infrastructure such as
cables or tunnels can be surveyed before reaching the critical point.
Another application of this method lies in water well quality control by
ensuring that well deviation and curvature criteria are met so that problems
with lowering pumps and other equipment can be avoided.
The probe is based on a high-precision combination magnetometer and accelerometer
sensor providing a continuous measurement of borehole inclination and azimuth.
Because of the resulting magnetic disturbance, reliable azimuth data can not
be obtained in steel-cased wells or in iron-rich geological formations.
Lim designs, produces and commercializes measuring instruments and solutions dedicated to drilling.