| H10 well area is located in the central area of Jiyuan oilfield in Jiyuan Oilfield,built in2011 2012 and the district chang 4 + 5 main source is from the basin in the northwest.H10 well area is delta front subfacies depositional environment,the underwater distributary channel and distributary bay are the main sedimentary microfacies.In order to grow a more comprehensive and intuitive understanding of chang 4 + 5 reservoir,to increase the rate of oil field production,to provides a favorable geological basis of arrangement of well pattern,some work is done.The article is based on theories of sedimentology,tectonic geology,petroleum geology,logging geology.By means of modern computer technology and geological modeling software,seismic,drilling,logging,logging and other kinds of dynamic and static data,all kinds of analysis test and formation testing data,carry out her tableland oilfield H10 well district 4 + 5 reservoir sedimentary facies research and reservoir geological modeling research.According to the principle of stratigraphic correlation,in the research district 4 + 5 three strata,and nine auxiliary sign layer are identified in the research district.Chang 4 + 5 oil group is subdivided into six small layer,they are chang4+511-1,chang4+511-2,chang4+512-1,chang4+512-2,chang4+521,chang4+522.Through the analysis of log facies,the study area is delta front subfacies deposition,which are subdivided into underwater distributary channel,distributary channel flank and shallow lake mud.Sand bodies isopach map and sand source than chart reveals the study area are mainly north west direction,which crosses the work area from north west to south east.In this paper,the distribution of oil and water in reservoir is analyzed,and the main control factors are determined.Finally on the basis of comprehensive geologic study,the article establishes layer structure,sedimentary facies,reservoir properties of the H10 wellblock purpose,which lays a solid foundation for the next field work. |
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