Study Of Effective Development Methods In Fuyang Reservoir And Wells Optimization Of Transition Zone In Xingnan

This paper Analyzes micro-pore structure and of Xingnan Fuyang reservoir through using constant pressure of mercury and、mercury experiments and Core displacement and carries out two development methods feasibility study: improved waterflooding and gas-injection. A improved waterflooding agent SL-2 is elected, after using the improved waterflooding agent the relative permeability curve has undergone an obvious change:moving significant increase in oil saturation, residual oil saturation dropped to 30%, oil and water two-phase permeation region increased, recovery improved to some extent, reduce the water pressure gradient of 9.25%～17.9%, and The degree of recovery based on the increase in waterflooding 11.78%～18.19%; Injection gas feasibility study results show that crude oil in Xingnan Fuyang reservoir with CO2 forms miscible on 20～25MPa pressure, close to the Fuyang oil layer formation pressure limit, gasdriving should not be used in Fuyang reservoir fracture area or be used based on the profile; With the method of numerical simulation Xingnan transition zone Wells are optimized to study if the calcium-low permeability reservoirs and reservoir composed of a sheet Well,.Test area effect also confirmed the results of the numerical simulation: After calcium-low permeability reservoirs composed of thin and poor reservoir Wells the water flooding degree of a thin and poor reservoir was increased, Less employed degree of the original Wells improved, New and old wells of the experimental area have the waterflooding effect.and smaller decrease.