FIELD: oil and gas industry, particularly well survey, namely locating fluid leaks, intrusions, or movements.
SUBSTANCE: method involves performing acoustic logging along well bore; recording and analyzing wave signal and phase correlation diagrams; recording surface waves reflected from clutch connections after total attenuation of forward acoustic waves passing from transmitter to receivers without wave reflection and determining presence and position of gas-saturated intervals from absence or multiple reduction of reflected surface waves.
EFFECT: increased accuracy.
1 dwg, 1 ex
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