METHOD OF WELLBORE ORIENTATION MEASUREMENT IN WELL DRILLING AND DEVICE FOR METHOD EMBODIMENT Russian patent published in 2003 - IPC

FIELD: drilling technique, particularly, control means of bottom-hole parameters in well drilling and geophysical surveys. SUBSTANCE: used in embodiment of method are flux-gate magnetometers, main accelerometers adjusted for vibration range of 10^-5 g- 2 g and additional accelerometers adjusted for vibration range of 10^-2 g- 90 g. In this case, the second accelerometers at rest are adjusted by the first accelerometers. Device for method embodiment has units of rigidly secured magnetometers 1, main accelerometers 2, additional accelerometers 3 whose sensitive axes X and Y are located in plane perpendicular to instrument axis, and conversion and coupling unit 4, with computer 5. EFFECT: extended base range of downhole instrument by vibrations, reduced instrument cost. 3 cl, 2 dwg