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The Research Of Fine Reservoir Description And The Rule Of Residual Oil Distribution Of Chengdong Oilfield East Area

Posted on:2004-08-17Degree:MasterType:Thesis
Country:ChinaCandidate:Y L WangFull Text:PDF
GTID:2120360122466422Subject:Geological Engineering
Abstract/Summary:PDF Full Text Request
Based on the observation and analysis of sand core, this thesis reconfirmed the sendimentary style of upper Ng of East Block of Chengdong Oilfield as braid river. Through the partition and contrast of oil layer, the four sand groups 16 minilayers are divided into 19 sedimentary units. Moreover, the logging interpretation model of reservoir parameters is established based on the data of the 14 cored wells, and the various reservoir parameters are calculated based on the secondary digital process of log data of 388 wells within the area The petrophysical feature of reservoir rock, the distribution of reservoir parameters and reservoir heterogeneity, as well as their variability law during water injection, are defined quantitatively. Based on the development feature analysis, this paper studies thoroughly the reservoir flood feature and remaining oil distribution through the microstructure, sendimentary phase, reservoir heterogeneity and well control, and proposes the comprehensive adjustment based on the injection and development well net structure and improvement The result of the research is obvious with the production degression rate from 9.14% of 1997 to present -1.46%, and water rate from original 0.33% to present 0.16%. In summary, the research idea, method and new achievement of the thesis provide a scientific geological basis for the oilfield development improvement.
Keywords/Search Tags:micro structure, micro sedimentary phase, Reservoir feature, heterogeneity, remaining oil
PDF Full Text Request
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