Forecasting the parameters of non-stationary water flooding of oil deposits

[摘要] Non-stationary flooding and water withdrawal with changing the direction of filtration flow as a secondary advanced recovery method allow enhancing oil deposit coverage by filtration processes, reducing or eliminating the amount of bypassed oil in productive formations. Process modelling should be provided for correct forecast about the efficiency of non-stationary formation stimulation. A formation model was designed for modelling cyclic water flooding. There are cross-flows between interlayers of reservoir robbing which have different porosity and permeability properties and unbalanced thrust in pore space. It is noted that when applying ordinary water flooding, high formation heterogeneity, higher than average oil viscosity and low permeability make it impossible to reach even average efficiency of oil pool development. The choice of a stimulation technique and its justification is an important step of planning in order to apply non-stationary stimulation. A possibility to apply non-stationary flooding efficiently for the analysed object has been established.

[发布机构] TPE Langepasneftegaz, LLC LUKOIL-Western Siberia, 43, Lenin Street, Khanty-Mansi Autonomous Area Yugra, Langepas; 628672, Russia^1;Ufa State Petroleum Technological University, Kosmonavtov st., 1, Ufa; 450062, Russia^2;State Autonomous Scientific Institution, Institute of Strategic Research of the Republic of Bashkortostan, 129/3, October avenue, Ufa; 450075, Russia^3;FBFR, Mechanical Engineering Research Institute, Russian Academy of Sciences, Bardina Street, 4, Moscow; 119334, Russia^4

[效力级别] 电工学

[关键词] Average efficiencies;Filtration process;Low permeability;Permeability properties;Process modelling;Recovery methods;Stimulation techniques;Water withdrawal