Borehole Deviation

QL40 DEV


The QL40-DEV measures the direction relative to magnetic north, inclination and trajectory of the borehole. Measurements are based on the “Applied Physics Systems” 544 orientation sensor containing both a 3-axis fluxgate magnetometer and a 3-axis accelerometer. Deviation parameters are calculated in real time and displayed as continuous logs during the measurement.

Deviation data can be processed further using the WellCAD software and deviation module. The WellCAD deviation module includes various 2D and 3D display options for deviation data from classical bull’s eye, projection and closure 2D views to 3D cubic and cylindrical displays.

The QL40-DEV is supplied as a middle sub. It can be combined with other logging tools of the QL (Quick Link) product line or can be operated as a standalone tool. It is compatible with Matrix, Scout and ALTlogger acquisition systems.


Sensor

APS544-3 axis magnetometer and accelerometer


Temperature – Pressure

0-70°C (32-158°F)
200 bar (2900 psi)


Diameter – Length

40 mm (1.6”) – 0.7 m (28”)


Weight

3.4 kg


Measurements/Features

Angular values of azimuth, tilt and relative bearing

Calibrated values of each accelerometer and magnetometer components



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