Applied Research Of The Remaining Oil Development Adopting Integrated Technology Of Geological Modeling And Reservoir Simulation

There started implementing primary infilling adjustment since 1985 in Xingbei area, After 20 years of development, the integrate water content of primary infilled well pattern has been to 91.55 percent and the exploring period of heavy water content has come. when the oilfield entered the later period of development, because of anisotropy of plane and longitudinal, there formed preponderant water channel in reservoir and was difficult to use remaining oil in some places where reservoir property were bad. According to dynamic analysis: at the present stage, the routine measures’effect became worse gradually such as fracturing and reperforating, it was difficult to improve development result by using routine tapping potential measures, so the new technology and measures were need urgently to produce remaining oil and adjust development plan.This thesis studied remaining oil distribution of Xingbei reservoir’s Xing four-six ranks western block which entered late high water content period adopting the measures of geological delicate modeling and numerical simulation based on dynamic analysis, and put forward tapping potential measures. The result proves that:1. Building three-dimensional geological delicate modeling on the condition of dense well pattern is the base of remaining oil study. For thin interbed reservoir, fine micro structure model, Stratigraphic framework model, Sedimentary microfacies model, The logging interpretation attribute model and NTG model should be established.2. Adopting technology of numerical simulation can find rich remaining oil area quantificationally and intuitively. But the thin interbed and dense well pattern made data volume grid number increase exponentially, so parallel computing would be adopted on multi-processor workstation.3. The precondition of remaining oil development is to know clearly remaining oil distribution rules and range of profitability, and to evaluate remaining oil potential. Based on integrated study of geology, dynamic analysis and result of numerical simulation, The remaining oil distribution is controlled by reservoir heterogeneity characteristics, structural position, sedimentary facies, sand bodies development and well pattern degree based on study of geology, dynamic analysis and result of numerical simulation.4. Based on historical matching, for different adjustment plan, there can predict the effect of recovery ratio. Exchanging reservoir beds is effective way to increase recovery ratio, that can change direction of liquid flow and improve water drive effect.Combined with the two kinds of backbone technology geological delicate modeling and reservoir numerical simulation, Xing four-six ranks western block was studied synthetically from various angles including static and dynamic, geological and development. And predicted the remaining oil distribution and made adjustment plan of exchanging reservoir beds, this thesis put forward one new thought that oil field reservoir geological model can be made intergrated study with reservoir simulation.