FIELD: mining.
SUBSTANCE: sampling system of fluid medium samples removes the sample of formation fluid medium from formation enveloping the borehole and containing primary fluid medium and dirty fluid medium. System includes sample inlet, the first protective inlet adjacent to the sample inlet and deviated from the sample inlet in the first direction along borehole axis, and the second protective inlet adjacent to the sample inlet and deviated from it in the second opposite direction along the borehole axis. At least one cleaning line is interconnected as to fluid medium to the first and the second protective inlets for passage of dirty fluid medium, and evaluation line is interconnected as to fluid medium to sample inlet for discharge of primary fluid medium.
EFFECT: reducing the contamination of formation fluid media drawn into the well extraction tool, and sampling of formation samples.
15 cl, 18 dwg
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