FIELD: oil and gas industry.
SUBSTANCE: invention relates to gas-geochemical searches of oil and gas deposits and can be used at prospecting works for oil and gas. Essence: successively there are selected samples of subsoil gas from boreholes on two horizons: top (0.3-0.4 m) and bottom (0.8-1.0 m), preliminarily encapsulating each interval of the atmosphere. It is implemented gas-geochemical analysis of content of methane and heavy hydrocarbons. At increasing of gas concentration of its background values not less than two times and increasing of concentrations on bottom horizon relative to top not less than 1.5 times, it is concluded about affirmative forecast of hydrocarbon accumulation.
EFFECT: forecast effectiveness increase.
3 cl, 1 dwg
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