海洋地质前沿2024，Vol.40Issue(10)：29-38,10.DOI:10.16028/j.1009-2722.2023.230
石臼坨凸起西段C区块古近系东三段岩石物理相特征及储层分类评价
Petrophysical facies characteristics and reservoir classification evaluation of the glutenite reservoir of the E3d3 of Paleogene in the Block C,western Shijiutuo Uplift
摘要
Abstract
Using core,cast thin sections,scanning electron microscopy,conventional physical properties and dy-namic monitoring data,the petrophysical facies of the glutenite reservoir in the E3d3 of the Block C of the Bohai Bay is studied under the comprehensive action of sedimentary facies,diagenetic facies and pore structure phase.The results show that fan-delta front subfacies are the main sedimentary microfacies of the E3d3 in the study area,with four types of sedimentary microfacies:near-shore channel,detrital flow,far-shore channel and distributary bay.Diagenetic facies can be divided into mud/sandy mixed base filling phase,compacted dense phase,unstable component dissolution phase and carbonate cementation phase.The pore structure phase can be divided into large pore type,middle pore type,large pore type and small pore type.Reservoir Quality Index(RQI)value was selec-ted to characterize the influence of different sedimentary facies,diagenetic facies and pore structure on the reser-voir.By calculating the quantitative characterization parameter values of the reservoir petrophysical facies,the in-fluence of different facies on the reservoir physical property and productivity was characterized.The petrophysic-al facies of the E3d3 in the study area were divided into 3 categories,corresponding to class Ⅰ—Ⅲ reservoirs.Based on the output profile test data obtained in the early production period production well of the E3d3 in the study area,the rationality of classifying reservoirs by the static parameters of petrophysical facies is verified.The research results can provide some geological basis for the next step of injection and production optimization and potential adjustment of well location selection in this area.关键词
石臼坨凸起/东三段/岩石物理相/储层分类Key words
Shijiutuo Uplift/E3d3/petrophysical facies/reservoir classification evaluation分类
海洋科学引用本文复制引用
孙藏军,周军良,常涛,舒晓,吴小张..石臼坨凸起西段C区块古近系东三段岩石物理相特征及储层分类评价[J].海洋地质前沿,2024,40(10):29-38,10.基金项目
中海石油(中国)有限公司重大项目"渤海中深层复杂油气藏高效开发技术"(CNOOC-KJ135 ZDXM36 TJ03TJ) （中国）
