Research On Geologic Model Of The Third Member Of Guantao Formation In Dalujia Area

Since2002, the oil exploration of the Dalujia areas has been high recovery extent, highwater and high remaining recoverable reserves which called ‘three high’ development stage.Due to serious heterogeneity, disunderstanding of the reservoir’s micro-structuralcharacteristics and the distribution of remaining oil,it’s necessary to reunderstand thestratigraphy,structure,reservoir characteristics of the oilfield and set up three-dimensionalgeological model,provide a solid geological foundation for findind the remaining oil andpotential oil-bearing zone.The paper used ‘rhythmic comparsion,hierarchical contral’ to bulid the stratigraphic fineframework of the Third Member of Guantao Formation; Through the fine interpretation of3Dseismic data, figured out the distribution and geometry of different levels of faults; used theresults of structural interpretation and the stratigraphic data, established fine fault models,clear the relationship of all the faults and the three-dimensional distribution of stratigraphy.Integrated the characteristics of single well facies, log facies and sand distribution,determinedthe type of sedimentary microfacies of the study area,used deterministic modeling approach tobuild the sedimentary facies models.By the results of porosity, permeability and otherparameters’ comprehensive logging interpretation, analysised the parametic distributioncharacteristics,and applyed facies controled method,bulit the parametic model.Discuss thereservoir heterogeneity preliminaryly. Finally, integrated the three-dimensional modeling ofstructure, sedimentary facies, and the parameters models, predicted the potential oil-bearingarea of the study area zone.