METHOD FOR EXTRACTING A FORMATION OF HYDROCARBONS Russian patent published in 2007 - IPC E21B43/30 E21B43/16 

FIELD: technology for extracting hydrocarbon formations of oil, gas, gas condensate and gas-oil beds; technology for selecting optimal position for wells across the area of hydrocarbon bed with consideration of its geo-technological features.

SUBSTANCE: method provides an alternative to more costly extraction technology, including drilling of horizontal wells and artificial hydro-disruptions of bed, because aforementioned method includes efficient utilization of available natural fractured (geological) disruptions. Method includes mounting disruption irregularity systems across the area of hydrocarbon bed, positioning product wells close to aforementioned system, while force wells are positioned beyond limits or within limits of zones, limited by aforementioned disruption irregularities, extraction of hydrocarbons through product wells. In accordance to invention, hydraulic connection is determined between disruption irregularities and wells and/or other disruption irregularities as well as composition of fluids of hydrocarbons and water extracted from these, filtration resistances are controlled between wells and disruption irregularities and, in presence of water influx from beyond the oil-yielding contour or from force wells, filtration resistances between wells and disruption irregularities are increased by forcing water-isolation compounds through force or product wells or through wells, which are specifically drilled for this purpose, at oil-yielding contour close to disruption irregularities on water flow line, during that wells are transferred from one category to another.

EFFECT: increased efficiency of extraction.

3 cl, 2 ex, 1 tbl, 8 dwg