Study Of Three-dimensional Geological Modeling And Characterization Of Complex Fluvial Feavy Oil Reservoir In South Of BZ25-1Oilfield

The main purpose of this paper is in Bozhong sunken Minghuazhen Formation,according to sand body vertical separability reservoir vertical subdivision to the maincauses of single sand body in sequence, is divided into6formations of68sedimentary units, use in the study area closed skeleton profile, stratigraphic markerscompared to control layer contrast technology to realize the well contrast, andestablish a high resolution sequence stratigraphic framework of oil reservoir inBZ25-1oilfield single sand body level in Bozhong sag. Based on sedimentology andpetroleum geology and other related discipline theory as the guide, make full use ofcore, logging, seismic data, production data, determine the source direction tosouthwest direction, the main sedimentary environment for the shallow water deltafacies, sub facies is delta distributary plain, main distributary channel, natural leveeand overbank sand the sedimentary micro facies, the river is mainly the Northeastsmall ultra small river, constitute the main reservoir in Bozhong25-1South oilfieldsandstone.Through the single sand body thickness, effective thickness, and physicalparameters, the heterogeneity of the study area, including sand, interlayer and planeheterogeneity study, internal mainly studies the rhythmic muddy intercalation andsand body, the plane of sandstone distribution model and distribution characteristicsof interlayer, compared the variation coefficient, different sedimentary units of thedart coefficient and the range and other parameters, the numerical study of sandstoneporosity and permeability of statistics can be seen, Bozhong25-1oil field layerproperties with high hole~high hole, hypertonic to special hypertonic, value of thelarger, better reservoir, the river mainly in medium to small river, the river V oil groupin large scale, reservoir thick sand body with two stage, single channel. Based on thesedimentary facies, established the physical model, the channel of porosity andpermeability of the maximum value.