VIBRATION RESISTANCE INCREASING METHOD OF WELL'S INCLINOMETRE, AND INCLINOMETRE IN WHICH THAT METHOD IS IMPLEMENTED Russian patent published in 2009 - IPC E21B47/02 G01C9/00 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to geophysical measurements and namely to well deviation survey. For that purpose gravity acceleration projections used for calculating zenith and apsidal angles are measured with two triads of accelerometres: with higher and lower measuring range. For calculating the angles there automatically chosen are signals from accelerometres with lower measuring range if gravity acceleration modulus value measured as to averaged values of accelerometres with lower measuring range is more or equal to minimum value of gravity acceleration on the Earth (9.78 m/s²), and from accelerometres with higher measuring range if the measured gravity acceleration modulus value is less than minimum value of gravity acceleration on the Earth. Angles are calculated as to accelerometre signals using known formulas in inclinometre computer.

EFFECT: increasing inclinometre vibration resistance.

2 cl, 1 dwg