A Study Of Low Permeability Reservoir Remaining Oil Distribution And Potential Tapping In Medium And High Water Cut Period

The NT fault block is a low permeability lithologic reservoir, after several years ofwaterflooding development, has entered the high water content of the deposition, reservoirproperties and non-homogeneity of the other factors, an oil aqueous irsing the distirbutionof the remaining oil complexbrought great diiffculties to the well stimulation, only thedetailed study of reservoir geological characteristics and residual oil distirbution law, inorder to effectively improve the oil recovery and improve performance.The NT fault block reservoirs, for example, to study the reservoir geologicalcharacteirstics, a detailed descirption of the reservoir proifle of the well, understand thestratigraphic correlation, sedimentary facies distirbution,reservoir characteirstics; miningcharacteirstics of the block and development status, fully aware of the extent of theproduction decline characteirstics of the water content changes; numerical reservoirsimulation technology, the block of remaining oil distirbution were discussed; carry out theinjection and production wells Network development and Adjustment Technical limits,develop adaptive development and tapping the potential of the adjustment measures.Through the application of the above method, ifnally pointed out the location of theremaining oil distirbution of the seven main producing layer, made a comprehensiveanalysis of the distirbution law; remaining oil potential based on the analysis rfom the strataand well online the analysis, concluded that the strata are no longer broken down, only wellnetwork to make adjustments. Developed three sets of adjustment programs, the programhas been optimized. The results of this study not only the direct guidance of the NT faultblock reservoir post-waterflood development, guiding signiifcance for similar reservoir.