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Reservoir Evaluation Of Chang6Oil Reservoir Group In Dalugou Region In Ordos Basin

Posted on:2012-09-01Degree:MasterType:Thesis
Country:ChinaCandidate:F LiuFull Text:PDF
GTID:2230330374996695Subject:Earth Exploration and Information Technology
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Ordos Basin is rich in oil and gas, which has bright prospect in exploration and development. Dalugou area lies on middle part of Shanbei Slope in Ordos is belongs to Suijin oil field. The author does systematical and detailed research on Chang6,which is the most primary oil-bearing series in Yanchang formation in Triassic period.On the basis of Sequence stratigraphy, sedimentary petrology and logging geology, combed with rich static data from logging, core analysis and mud logging, the author provided correlation of strata and small layer partition, which divided Chang6oil reservoir group into5oil-bearing series. According to various sedimentary facies logo, analyzed that study area belongs to delta facies depositional environment. The intrafacies is delta plain and delta front deposition. The sedimentary microfacies are distributary and distributary interchannel on the land, underwater distributary channel and interdistributary bay underwater. On that basis, combined with the provenance analysis, the thesis studied the development and distribution of sedimentary microfacies. At the same time, Combined with the large number of assaying material and conventional petrophysical properties data, the author studied the characteristics of reservoir. Through the " relationship among the four characters " research, established a set of interpretation models of reservoir’s parameters and the floor level of reservoir parameter which is suitable for study area, do the second explanation for logging data, and then do research on the distribution of the sand body and physical properties.Based on the foundation of sedimentary facies, distribution of sand body and reservoir physical properties, evaluated the classification of reservoir and rentiated the favorable reservoir area, then combined with the data of formation testing,selected the most favorable exploration areas in Chang6oil reservoir group, Dalugou area.
Keywords/Search Tags:sedimentary facies, reservoir features, reservoir evaluate, oil and gasenrichment, favorable area prediction
PDF Full Text Request
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