FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to sampling of formation fluids. A method of fluid sampling in a position inside the borehole passing in underground layer where the sampling tool fitted with a packer is placed, in the borehole on the transportation unit the packer expansion is provided with formation of the sampling zone between the top restrictive interval and the bottom restrictive interval, fluid is taken from the top and the bottom restrictive intervals, and fluid is taken from the sampling zone. And at least two among the top restrictive interval, the bottom restrictive interval and the sampling zone have liquid isolation from each other by means of one or more packer sections.
EFFECT: decrease of pollution of fluids during injection into the downhole tool and/or during passing through the downhole tool.
10 cl, 6 dwg
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