FIELD: oil and gas industry.
SUBSTANCE: method involves sampling and thermostatting of oil sample, lowering of calibrated capillary sample, measurement of oil rise height per fixed time period on calibrated capillary, determination of age of oil spill by comparing oil sample rise height on this capillary per fixed time with calibrated height level for specimens of fresh oil of the same kind.
EFFECT: development of simple, reliable and cheap method for determining the age of spilt oil, which is applied both in stationary laboratory conditions, and as a part of movable laboratories, and in field conditions.
2 dwg, 1 tbl
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