Studies On Interpretation Method Of Infill Wells Water-flooded Layers In Zhao-212Block Yongle Oilfield

After the oilfield water injection, in water driving oil process, the fluid properties andpore structure of formation, physico-chemical properties of the rocks, as well as oil, gas, andwater distribution, would be occured degree of change. Well logging interpretation forwater-flooded layers are used logging data to evaluate the changes of water-flooded layers, inorder to see the water-flooded parts and the water-flooded level, to provide a basis forenhancing oil recovery in secondary and tertiary recovery.After eight years of injection development in Zhao-212block Yongle oilfield, the waterbreakthroughr and water flooded of the blocks wells has more obvious direction, the east-westoil wells of injection wells see water earlier, water cut rises fast, individual wells in a shortperiod of time critical water flooded.But in injection well other direction water injection effectis poorer and because of the influence of the row of position, the water-flooded layer is morecomplex. Zhao-212block test results show that Zhao-212block has some potential forinfilling adjustment, so for the wells that is not implemented, studying on characteristics andvariation of reservoir flooded, judging water-flooded zone types, improving the accuracy andinterpretation of water flooded layer, it is every important for plan adjustmen,stabilizing oilproduction and controlling water and high and stable yield.Using the drilling, logging and other data, for Zhao-212block Yongle oilfield thin poorstorage layer geological features, this paper established different deposition micro-phasestorage layer pore degrees, and penetration rate, and saturated degrees explained model. Withdentifying storage layer water flooded layer measuring well response features, we preparedwater flooded layer explained plates. And161infill wells application in Zhao-212block,achieved good effect.