The Integrated Study Of The Reservoir Description And The Reservoir Simulation Of The Putaohua Of Gaotaizi Oil Field In Daqing Placanticline

According to the integrated research mentality,this work unifiesclosely two big prop technologies(the reservoir description and the reservoirnumerical simulation)and conducts the comprehensive study on the basis of thereservoir static description and with the the reservoir numerical simulationdynamic to Pu I group oil formation of The Gaotaizi oil field from the perspectiveof different geology and the development,and analyses remaining oil distributionregularity, explores the integration comprehensive potential working methodof reservoir description and numerical simulation, explores a new workingthinking for the guidance of old oilfield ermaining oil fine.The tectonic evolution history of Gaotaizi oilfield indicates that thefault is mostly formed in Qingshankou group prior to deposition, mainly in thehot doming rifting and faulted phase formation, Nenjiang formation stage ofextrusion and Mingshui formation at the end of the deposition of tectonicinversion, also formed a small faults. In the Nenjiang group of tectonic movementstage, Daqing Changyuan tectonic inversion, by stretching into extrusionmovement, Gaotaizi anticline and Taiping Village anticline is preliminary form.Mingshui formation at the end of the deposition of tectonic inversion, in short,to form the present tectonic framework. On the basis of sequence interface tosystem layer and Layer Subdivision of contrast, by contrast, lithofaciescharacteristics and cycle marker stability, can be divided into three groupsof15layers of sandstone, and in accordance with the pattern drawing methodof fine drawing of15depositional facies map, divided into a body belt, no bodybelt, intermittent narrow sandstone bodies and stable distribution sheet sand4types, river, between the river and the untabulated reservoirs in3kinds ofsedimentary facies.Using the deterministic phase control modeling method builds reservoirattribute model, with15vertical subdivision layer as a unit, output thethree-dimensional geological model data, the data is directly applied to thenumerical simulation mode, realizes the good convergence of reservoir description and numerical simulation;through matching the permeability curvewith the sedimentary microfacies and oil-water layer quantitative descriptiontechnology, realizes of heterogeneous attribute and fine characterization ofoil-water interface in a numerical reservoir model Through the fine historicalfitting, reserve fitting relative error is only0.32%, each development indexmatching degree is quite high.By integrated dynamic analysis and numerical simulation method of organicunion, makes suer the remaining oil distribution and potential method.Researchshows that, the formation and distribution of remaining oil is mainly controlledby structural, sedimentary facies, reservoir heterogeneity and the developmentfactor.Near fault, the high part of a structure and not enoughinjection-production well area have more remaining oil;The main belt straightstream sand body recovery degree is high, the water flooding is serious,remaining oil dispersedly distributes, The sand body without main beltstraight stream recovery degree is relatively low, water flooded with light,Stable distribution type sheet sand body due to the good injection-productionrelationship recovery degree is the highest, remaining oil dispersedlydistributes in crosswell retenion area.