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Research On Fine Geologic And Remaining Oil Of Zhuang-2 Reservoir In North Jiangsu Basin

Posted on:2017-01-24Degree:MasterType:Thesis
Country:ChinaCandidate:Q YeFull Text:PDF
GTID:2180330488962114Subject:Geological engineering
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The Gaoyou depression is the major oil exploration zone in Jiangsu oil field. For 18 years development of zhuang-2 fault reservoir,there exist many problems as water flood of the reservoir,the distribution of remaining oil and so on. The sedimentary microfacies, fine Geologic and remaining oil research of zhuang-2 reservoir, which can help the process of exploration and development, and also meaningful to the prediction of the remaining oil.The paper predicts the character and trend of the distribution of sedimentary microfiches and sand body, and discusses the relationship between microfiches, reservoir and remaining oil, oil and gas distribution. The followings are the research methods and results:The subfacies of Fu-Ning formation include five microfacies which are composed of, sub-distritary channel, sub-distritary bay, mouth bar, distal bar, sand sheet. the most favorable reservoir fancies belt is the underwater distributary channel sandstone, followed by mouth bar sandstone. The main sand bodies are mouth bar underwater distributary channel.From the control of the northwest source, sedimentary microfacies sand body distribution direction of NW-SE oriented, a lobate and sedimentary sand bodies of the main water diversion channel and mouth bar.From Fu for a pattern, in the vertical direction, delta plain sub phase, delta front sub phase development individually or by first presenting combination form of delta front subfacies and delta plain.Fu a section of each layer in the interlayer of small amount and scale; interlayer heterogeneity is moderate and strong degree, development of interlayer in the region are better; plane heterogeneity showed an overall moderately heterogeneous degree.Summarizes Zhuang 2 fault block Fu for a reservoir remaining oil distribution patterns of pore throat structure, the wettability of rock, water injection pressure of micro remaining oil formation and distribution of; reveals that faults and micro structure, sedimentary microfacies, reservoir heterogeneity and well network condition and so factors controlling effects on macroscopic remaining oil distribution.
Keywords/Search Tags:zhuang-2 reservoir, fu yi duan, secondary porosity, Sedimentary Microfacies, sedimentary facies model, Reservoir heterogeneity, remaining oil
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