大庆石油地质与开发2026，Vol.45Issue(3)：40-47,8.DOI:10.19597/J.ISSN.1000-3754.202406021
渤海湾盆地大民屯凹陷沈84-安12区块沙河街组三段储层特征及主控因素
Reservoir characteristics and main controlling factors of the third member of Shahejie Formation in Shen84-An12 block of Damintun sag in Bohai Bay Basin
摘要
Abstract
The third member of Shahejie Formation(Es3 Member)in Shen84-An12 block of Damintun sag are key target srata series for oil and gas exploration in Bohai Bay Basin.In view of the problem of less understanding on main controlling factors of reservoir development and distribution of favorable reservoirs in current blocks,the pet-rological and physical properties of Es34Ⅰ,Es34Ⅱ and Es33Ⅲ reservoirs of Es3 Member of Shen84-An12 block are quantitatively studied by full use of coring well analysis,testing,drilling and logging data,and the main control-ling factors of reservoir development are analyzed to carry out favorable reservoir prediction.The results show that reservoir is mainly feldspathic lithic sandstone with relatively low maturity of composition and medium maturity of texture.Primary pores are the main reservoir space.Average porosity of reservoir is 22.1%,and average permeabili-ty is 412.8×10-3 μm2,making it a medium-porosity and medium-permeability reservoir,and the porosity-permeabili-ty correlation is poor.High-quality reservoirs mainly develop in high-energy facies belt of underwater distributary channels in fan-delta front.On the basis of facies control,compaction and cementation further affect the physical properties of the reservoir,causing a decrease in porosity and permeability.The application of waveform indication inversion can effectively predict the extention range of favorable reservoirs and provide a basis for well deployment of progressive exploration in mature oilfields.关键词
渤海湾盆地/大民屯凹陷/沙河街组三段/沈84-安12区块/储层特征/储层发育/主控因素Key words
Bohai Bay Basin/Damintun sag/the third member of Shahejie Formation/Shen84-An12 block/res-ervoir characteristics/reservoir development/main controlling factors分类
能源科技引用本文复制引用
樊佐春..渤海湾盆地大民屯凹陷沈84-安12区块沙河街组三段储层特征及主控因素[J].大庆石油地质与开发,2026,45(3):40-47,8.基金项目
中国石油天然气集团有限公司科技项目"中高渗油田特高含水期大幅度提高采收率技术研究"(2023YQX104). （2023YQX104）
