| Research on the reservoir heterogeneity is very important in the fundamental work of oil field exploration and development.Reservoir modeling has been the most effective way to characterize the reservoir quantitatively and to portray the heterogeneity of different sizes.This paper aims at the geologic background of L228 working aera of Hhuanjiang oil field,under the theroretic guidance of sedimentology,structural geology,logging geology,and reservoir engineering,by means of many laboratory analysis and data,sedimentatal microfacies,microstrucuture and fluid flowing characteristics is in depth study.On the basis of geological research,illuminate heterogeneity in terms of micro,reservoir layer,the layer and flat-heterogeneous characteristics through quantitative parameters and interbeds research.Illuminate the reservoir hetergeneity by building 3d Reservoir model.Points out that the correlation between problems in producing and geology by using the results of heterogeneity research and reservoir modle.The main conclusions are in the following:1.Change8 reservoir is layered into 4 sublayers : Chang811? Change812-1?Change812-2?Change813,based on observation and grain size analysis,and under associated consideration of logging trace characteristics,Change8 reservoir in study aera is classified into three sedimentatal microfacies,delta front,subsea river and river flank.2.On the basis of geological research and geological the model,pore types are quite different,barriers are widely distributed,attribute parameters in the plane display a marked difference,heterogeneity is distinctive in both largescale and microscale.3.Revealing the controlling factors of reservoir heterogeneity:sedimentary environment and diagenesis are the main controlling factors,dynamic production situation also controls the reservoir heterogeneity.4.There is a correlation between the problems in production such as water rises?reservoir pressure falling down and sedimentatal microfacies?heterogeneity and barriers. |
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