Ordos Basin White Leopard Region Long Reservoir Geological Model

The paper aim at the reservoir of chang 6 in Baibao district of Ordos basin, follow the guide of geological statistics, on the base of collecting plentiful data of drilling, logging,core data and production dynamic, fully use the sedimentary microfacies subdivision, the reservoir knowledge database,fine log interpretation, stochastic simulation, numerical simulation and the computer visualization, widely absorbe the previous research results, especially emphasize the comprehensive study, means that the outcrop,sedimentary facies,geological statistics and production dynamic must be combined together, make comprehensive analysis of variety information, flexible apply the idea and method of facies-controlled modeling, the principles of geological controlling,static and dynamic data combination,systematic treatment with subjects always run through the entire research, build the fine 3D geological model, supply reliable safeguard for the efficient development of Baibao oilfield.Based on the development of the Ordos basin, refern to abundant references and correlative research results, summarize the regional tectonic evolution characteristics of Ordos basin, analyze the regional sedimentary background and sedimentary characteristics. According to the fine analyzing of coring wells' logging facies, follow the rules that from single well to section and to plane, do the comprehensive research of sedimentary microfacies, build the facies models in the research area, provide basic guide for the building of geological model in the reservoir of chang 6 in Baibao district.Start from the four properties' relations study, based on the well testing results and the core geological parameters statistical results, build the oil&water recognition criterion, define the cutoff criterion of netpay, according to the key well's core data, geology, production dynamic, statistic and conclude the evaluation parameter and criterion of the grey system theory's lithology, reservoir properties, oiliness, build the logging interpretation neural network model controlled by the productivity prediction, apply the grey system and the neural network comprehensive evaluation processing program for the 235 wells' fine interpretation in this area.For improving the reliability of the extra-low permeability reservoir evaluation, from the multi geological parameters, screened out the storage coefficient reflected the reservoir' s storage ability, the formation factor reflected the reservoir' s production ability, and the layer flow index reflected the reservoir' s, adopt single and multi element comprehensive method for the reservoir evaluation, finally divided the reservoir into four types, based on the comprehensive consideration of the sedimentary facies zone,the oil source development characteristics,the main sand development belt and the exploration status, make the optimizing evaluation and prediction for the reservoir.Fully apply the logging and fine geological research results, optimizate deterministic modeling method to build the 3D structure model, optimizate sequential indicator method to build the reservoir 3D facies model, optimizate sequential Gauss simulation and phase control simulation technology to build the 3D attribute model, finally build the sustainable renewal 3D geological model of the whole chang 6 reservoir in Baibao district and supply reliable geological foundation for the further development and adjustment schemes...