Abstract
With the deepening of oilfield development, residual oil distribution has become an important reference for evaluation of oilfield development effect and selection of measures to improve oil recovery. Based on core data of coring wells, through core analysis and comparison between coring wells of different layers in single well and different coring wells in adjacent blocks at the same layer and different coring wells, combined with sedimentary facies zones and dynamic production and development data, this paper analyses and studies the exploitation situation of class II reservoir a II 1-9 in western S oilfield, in order to provide basis for searching for potential remaining oil and formulate more suitable potential tapping measures.
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