METHOD OF HYDROCARBON DEPOSIT OPERATION Russian patent published in 2009 - IPC E21B43/16 E21B43/26 

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas industry and can be implemented at final stage of development of massif and bed-massif deposits with top of great thickness and under-laid with bottom water actively penetrating into producing part, particularly for intensifying oil and gas inflow from producing beds and for increasing their yield, notably, in horizontal wells (HW). The essence of the invention is as follows: the method consists in drilling a horizontal well, in perforating it and in forming fissures with successive hydraulic break of the bed starting from the further from a vertical portion of the well end by means of insulation with a packer of each perforated interval from the rest of the column; the following operation of the horizontal well is carried out via breaks in the bed. According to the invention, when there is operated the well with active bottom water, with oil withdrawal ratio not exceeding 92% and with the highest oil and gas saturation at the section nearest to a vertical section of the well, a hydraulic break is executed selectively with periodic change of a break pressure value from maximal not exceeding critical allowed value for this bed to minimal value whereat a fissure of break occurs, and back to a maximal value or to some average value. Also value of break pressure is selected considering producing properties of interval of horizontal section of a well borehole and preventing destruction of rock skeleton of the bed. Deposit is operated with depressions onto the bed eliminating drawing of bottom water.

EFFECT: facilitation of maximal possible production of oil and gas from hydrocarbon deposits.

3 cl, 2 dwg