FIELD: oil and gas industry.
SUBSTANCE: device has container for marked liquid lowered on geophysical cable with depressurization assemblies and driving assemblies and measuring sensors, more than one. Measuring sensors are positioned above and below researched bed range no less than one on each side. As marked liquid, ferromagnetic liquid is used, and as measuring sensors - magnetic field measuring devices.
EFFECT: lower costs, simplified construction, higher precision.
1 dwg
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