METHOD OF DEVELOPMENT OF MULTI-HORIZON FIELD OF MASSIF TYPE

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention refers to oil and gas industry, particularly to methods of development of multi-horizon field of massif type. The essence of the invention is as follows: the method consists in boring out the field with vertical pressure and producing wells, in pumping water through pressure wells and in withdrawing oil via producing wells. According to the invention vertical pressure and producing wells are bored out through whole thickness of the massif deposit. Each vertical pressure and producing well is equipped with horizontal boreholes at the level of each horizon; the horizontal boreholes communicate payout horizon with the vertical well. The horizontal boreholes are made through the whole length of the horizon along its strike. Within the boundaries of one horizon the horizontal boreholes of producing and pressure wells are alternated between them and are arranged in parallel rows. Pumping-withdrawal in all horizons of the massif field is performed simultaneously. In addition, rates of development of horizons forming field of massif type are determined uniform, while pressure drop between lines of pressurising and withdrawal between the horizontal borehole of the producing and horizontal borehole of the pressure wells is determined from analytic expression within the boundaries of each horizon.;EFFECT: increased efficiency of the method due to reduced time of development and simultaneous involving all horizons forming the massif field into developing.;4 cl, 1 ex, 1 tbl, 1 dwg