FIELD: oil-and-gas production.
SUBSTANCE: proposed sampler comprises thin-wall vertical case with handle at top section and valve taper seat at bottom section, as well as ball to shut off said seat. Said ball is suspended on fish line to handle to stay in two positions relative to said seat. Note here that, at bottom point of fish line suspension to handle, ball is located on seat to shut it off, while, at top said point, the ball is lifted above seat.
EFFECT: higher data content of sample.
2 cl, 1 dwg
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