METHOD FOR DEVELOPMENT OF DEPOSITS OF NATURAL HYDROCARBONS IN LOW-PERMEABLE BEDS Russian patent published in 2016 - IPC E21B43/26 E21B43/18 

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of horizontal wells and conducting of multiple hydraulic fracturing of formation therein. At that, system of production wells is supplemented with system of injection horizontal wells with reusable hydraulic fracturing of formation in them. Implemented is maintenance of formation pressure based on injection into formation carbon dioxide, which enables to maintain high current flow rates of wells at oil, gas condensate, as well as high limit values of coefficients of oil, gas and condensate output in oil, gas and gas condensate deposits, which complements possible efficiency of such method of development based on detected in laboratory experiments natural geo-synthesis, characterised by formation of hydrogen in formation conditions, as well as gaseous and liquid hydrocarbons in reaction of carbon dioxide with residual water in presence of natural catalysts. As a result, synergetic effect of increasing efficiency of development of oil, gas and gas condensate deposits either due to formation pressure maintenance, and additional, associated extraction from low permeable reservoirs formed hydrogen, gaseous and liquid hydrocarbons.

EFFECT: technical result consists in improvement of efficiency of development of deposits of natural hydrocarbons with low-permeable beds.

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