DEVELOPMENT METHOD OF OIL-GAS DEPOSIT USING HYDRAULIC FRACTURING OF FORMATION Russian patent published in 2013 - IPC E21B43/26 

FIELD: oil and gas industry.

SUBSTANCE: method involves development of oil-and-gas deposit using hydraulic fracturing of formation, at that at the first stage of oil-and-gas deposit development hydraulic fracturing of formation is performed in all production wells. Simultaneously, using geophysical methods based on recording of microseisms as well as on recording of angle of formation slope occurred by hydraulic fracturing of rocks, directions of paths of hydraulic fracturing cracks by azimuth are determined. When debits of production wells are lowered below 10% from initial values, hydraulic fracturing is performed in all injection wells, at that immediately after hydraulic fracturing in injection wells there performed is treatment of formation by high pressure for increase of intake capacity. In order to set direction of hydraulic fracturing cracks parallel to rows of injection and production wells, artificially changed is stress field in well bore zone of formation around wells. For this action hydraulic fracturing of formation in wells is done in two stages, at which during initial hydraulic fracturing quartz sand and plug composition are pumped in well, and during the second one - binding agent of fractions - proppant.

EFFECT: improvement of method efficiency in various geologic and technical conditions of oil-and-gas deposit development.

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