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Reservoir Characteristics Research On Chang6Formation Of Ya Ping Area In Zichang Oilfeild

Posted on:2014-11-27Degree:MasterType:Thesis
Country:ChinaCandidate:J JiaFull Text:PDF
GTID:2180330467971319Subject:Geological engineering
Abstract/Summary:PDF Full Text Request
The subject investigated of the paper is Chang6oil formation of Ya Ping area in ZichangOilfeild. On the basis of a regional background and the data of research area, using reservoirsedimentology and stratigraphy then combining with the main survey of researcharea,applying the stratigraphic division method,we divide the objective horizon exactly.Inorder to study the sedimentary system,distribution of sedimentary facies and reservoircharacteristics,applying several experimental anaylsis method such as core and outcropobservation,casting slice analysis,electron microscope observationg and mercury penetrationexperiment method and so on.The purpose is to understand the pattern and types ofreservoir,lays the foundation for later exploration.Ya Ping area mainly is deltaic environment which developing delta plain. It can be divided fordistributary channel and interchannel in Chang6period.Using the analysis of the sedimentarycharacteristics and logging properties,we can understand the development of microfacies inChang64,Chang63,Chang62and Chang61.By means of mercury penetration experiment, casting slice identify and scanning electronmicroscope anaylsis,the conclusion can be drawn that arkoses are the main types of sandstonesin Chang6oil formation and that chlorite and calcite are the main types ofcementation.Cementation,dissolution and compaction are the main types of diagenesis of thesandstone.The type of Chang6oil formation is characteristic by low-porosity and low-perminablility.Thetypes of pore space mainly is residual intergranular pore.We divide the reservoir of research areaintoⅠ, Ⅱ, Ⅲ and Ⅳ four categories.Research area mainly developed Ⅱ andⅢ type.
Keywords/Search Tags:Sedimentary facies, Reservoir bed, Chang6oil formation, Ya Ping area, Ordos Basin
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