| 摘要 |
FIELD: gas condensate deposit development, particularly to increase productive reservoir output at later stage of well operation without formation pressure retaining when hydrocarbon condensate forms in producing well bottom zone. ^ SUBSTANCE: method involves performing periodical well bottom zone cleaning of hydrocarbon condensate generated as a result of formation pressure reduction by supplying solvent, which solves hydrocarbon condensate, in reservoir, wherein the solvent is mixture including acetone and pentane-hexane fraction; holding well as it is for condensate solving; removing the obtained solution from well bottom zone during well putting in operation. Before pentane-hexane fraction injection in well the fraction is saturated with gaseous hydrocarbon up to pressure of 0.3-1 MPa so that equilibrium gas blanket is created over liquid pentane-hexane fraction. Gaseous hydrocarbon mainly contains methane. Above pressure is maintained during mixture injection in reservoir. ^ EFFECT: increased output from producing gas condensate wells due to improved hydrocarbon condensate removal from pore space and well bottom zone reservoir permeability recovery. ^ 2 ex, 3 tbl |
