FIELD: oil and gas industry.
SUBSTANCE: in the course of method implementation flow column is filled with reference fluid that has higher density than the well product in flow column and it does not mix with the product. Reference fluid is supplied by surface pump through the counter and reinforced pipe in tubular annulus to the flow column bottom to the area above the bore-hole pump and back pressure valve. The moment of flow column filling with reference fluid is the fluid output through the subsurface sampler. Deposit volume is defined by formula.
EFFECT: increase of method efficiency, simplification of technology.
2 cl, 1 dwg
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