PROCEDURE FOR DEVELOPMENT OF OIL DEPOSIT Russian patent published in 2011 - IPC E21B43/20 

FIELD: oil and gas production.

SUBSTANCE: procedure consists in withdrawal of oil via producers, in pumping working substance through pressure wells under cyclic mode: 10-20 days - pumping, 10-20 days - shutdown; also, pressure wells are analysed. All pressure wells are hydro-dynamically intercommunicated vie a surface system of water conduits where working substance flows. At pumping working substance the pressure wells are shut down and started up simultaneously. Pressure wells and producers are analysed at average values of amplitude of monthly lunar tides. There are determined zones wherein influence of tidal forces is insignificant. Also, in each specified producer there is determined ratio by formula K=h_o/h_total, where h_o are average values of thickness of oil saturated section of pay, m; h_total is total thickness of pay, m. Pumping working substance into pressure wells is stopped and withdrawal of production from producers is decreased to 30 % of nominal only in a period of monthly lunar flood of formation water and reduction of formation fractures, except for zones specified with analysis where pressure wells are being pumped during lunar flood. Withdrawal from producers is limited in a period of maximal flood for interval from 1 to 0.1 of flood time depending on change of ratio determined by formula K=0.1÷1 correspondingly.

EFFECT: raised efficiency of deposit development.

3 dwg