Research On Diagenesis Of Chang 6 Oil Formation In Hengshan-shuangcheng Area, Ordos Basin

The theme of this thesis is the clastic diagenesis chang 6 oil Formation, Hengshang-shuangcheng area,Ordos Basin.and the influence on the physical property of the reservoir.According to the comprehensive research on sedimentary characteristics, lithologic features, diagenesis characteristics, reservoir characteristics and diagenesia influence on the physical property of the reservoir, following conclusions have been achieved:It is most important element for researching reservoir sandstone sandrock that compaction to destory the diagoenes, the room took a large part out of all lost space of reservoir room, furter the aonther most important element for control the quality of the reservoir room of chang 6 oil formation, shuangcheng area, it control the perity certain area.The chlorite is benefit for the development of pore on the research area, by chlorite film protection, preservation of primary intergranular pore into the study area favorable reservoir space. Secondary porosity generated by dissolution also made some contribution on reservoir properties.The Shuang-cheng chang 6 formation is divided into diagenetic lithofacies:chlorite remnant intergranular pore-feldspathic solution facies.the authigenic chlorite cement-intergranular pore facies,mica intensive compaction facies and carbonate cement facies.Among them,the chlorite remnant intergranular pore-feldspathic solution facies and the authigenic chlorite cement-intergranular pore facies are good sedimentary-diagenetic facies in study area,mainly in the main distributary channel sand body parts.