Oil Reservoir Sedimentary Characteristics Research On1~3Layer Of Portuguese Ⅰ Reservoir Group In The One~Two Area Of Xingshugang Oil Field Eastern Part In Daqing

The high resolution sequence stratigraphy theory as the foundation, comprehensiveapplication of various static data, Daqing Xingshugang area of Songliao Basin, the first memberof Yaojia formation Putaohua group of glucose I1³oil unit sedimentary characteristics arereconsidered. This paper analyzes the Daqing Xingshugang area the first member of Yaojiaformation Putaohua reservoir sedimentary period of distributary channel swing violently,different period, different cutting each other over the same period river channel between thecutting that plane of regional distribution, resulting in fluvial facies stratum in the changeableand complicated reasons, think in the deposition period due to the deposition caused in theprocess of the main factors of meandering compound with regular swing of the underlyinguplift center wave migration. At the same time, based on the backbone section layer frame thetrack closed, constantly on the backbone section interpolation, tracking closure, and ultimatelydetermine the sedimentary unit segmentation criteria, to construct the deposition of the districtunitPlanar distribution model; based on the study of sedimentary microfacies, plane boundary,shape, size and the single sand body of single sand body between the shielding characteristics,through the fine sedimentary microfacies, the microfacies or same microfacies in different parts of the vertical sedimentary characteristics analysis of different, plane at Portuguese I1³oilreservoir and identified2kinds of microfacies,14kinds of sedimentary microfacies, thesedimentary microfacies distribution form on the plane, comprehensive research thinks,Xingshugang Portuguese I3₃2^Portuguese I22unit belongs to delta distributary plain facies,dominated by deposition of high curvature distributary channel sand, sand relative development;Portugal’s I2₁²unit belongs to delta distributary plain facies, dominated by sedimentarylow-bending distributary channel sand; front Mikie braided delta sediments belong within thePortuguese I2₁¹Portuguese I11unit;The single channel thickness distribution and channeldistribution scale research, the Portuguese I2₁¹single channel mean maximum minimumthickness, glucose I3₃²a, glucose I2₁¹, Pu I1₂and Pu I2₂layer channel distribution scale isbiggest, through a comprehensive study of the region, has laid a good foundation for the furtherexploration of remaining oil.