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The Research Of WangJi Complicated Fault-block Oil Reservoir Development Geological Comprehensive Evaluation And Adjustment Treatment

Posted on:2011-07-12Degree:DoctorType:Dissertation
Country:ChinaCandidate:S B LiFull Text:PDF
GTID:1100360308470486Subject:Oil and gas field development project
Abstract/Summary:PDF Full Text Request
Wang Ji complicated fault-block ordinary heavy oil reservoir is located in the territory of WangJi Country Tanghe Town, Henan Province,and it have typical characteristics as complex geological structure, complex fluid properties, complex oil-water system and serious reservoir heterogeneity. To clearly understand the geologic characteristic system of such complex reservoir, accurately analyze and evaluate the reservoir performance, the current status of exploitation and the distribution rule of remaining oil in current reservoir, have great significance to develop effective measures of comprehensively managing reservoir and further improve the effect of reservoir development.This paper carried out following research and made the corresponding results to Wang Ji oil reservoir heterogeneity, as well as the reservoir developing status.①. On the basis of understanding geological characteristics of Wang Ji oil reservoir and static classified evaluation of the main block, evaluated the oil reservoir from three different aspects of storage coefficient, formation capacity and flow unit index.②. On the basis of analyzing the factors of impacting reservoir heterogeneity, described the characteristics of reservoir macroscopic heterogeneity in detail and researched the flow unit and its distribution characteristics.③. Analyzed and evaluated the water-drive development result of WangJi complicated fault-block oil reservoir. Impacting by the characteristics of reservoir heterogeneity, water- drive development result of WangJi complicated fault-block oil reservoir has clear regionality. The average oil recovery of the East region, the ChaiZhuang region, the B242 region and the West region respectively is 20.9%,23.7%,15.03% and 21.0%.④. Using systemic analyzing method of reservoir engineering, detailedly researched the waterflood control degree, the adaptability of flooding network, well spacing density, the keeping degree of rational formation pressure, the rational injection-production ratio and the rational water injection. The formation pressure rational maintain level of the East region, the ChaiZhuang region, the B242 region and the West region respectively is 86.08%,81.53%,86.98% and 95.45%, and the rational injection-production ratio respectively is 1.010,1.004,1.006 and 1.017.⑤. Using sedimentary context confining method and combing high resolution sequence stratigraphy, built the triaxial geologic model, and on this basis, applying small scale numerical simulation, studied the current distribution of remaining oil.⑥. Considering the problems existing in development, combing the formation characterization, percolation features and the distribution of remaining oil, proposed and demonstrated the comprehensive treatment program of Wang Ji oil reservoir.
Keywords/Search Tags:complicated fault-block oil reservoir, static classified evaluation, reservoir heterogeneity, flow unit, remaining oil distribution, comprehensive treatment
PDF Full Text Request
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