FIELD: oil and gas industry.
SUBSTANCE: methods for searching for hydrocarbon deposit; quantifying oil and gas reserves; predicting local oil deposits. A prospecting well is drilled. Geological and geophysical materials are analyzed according to the ratio of the contours and arches of the lower and upper floors of exploration and the tectonic structure of the territory. Based on the results of the analysis, a geological model of the field development target is built. Production wells are being drilled. Elevations are identified on the geological model according to the structural map of the roof of the formation, localized by a closed hypsometric isoline, with an amplitude of difference in absolute marks of more than 10 m. For the selected elevations, a coefficient is calculated that takes into account the area of the elevation along a closed isoline and the amplitude of the difference in absolute marks. A rise with a coefficient greater than 0.01 is selected. Based on the geological model, the uplift contour is projected onto the underlying stratigraphic horizons containing the reservoir layers. A production well is selected on the crest of the elevation. Based on the geological model, the bottomhole depth is determined for uncovering the underlying reservoir formation. The bottomhole of the selected production well is deepened by uncovering the reservoir layer of the underlying stratigraphic horizon. A core is taken and geological and geophysical studies are carried out to distinguish oil-containing reservoirs. Reservoirs are tested in the string.
EFFECT: increased technological efficiency of forecasting local oil deposits in the context of the sedimentary cover.
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