沉积学报2025，Vol.43Issue(1)：20-38,19.DOI:10.14027/j.issn.1000-0550.2023.072
纹层状湖盆细粒沉积岩储集物性及油气富集特征研究进展
Progress on the Features of Physical Property and Hydrocarbon Accumulation of Laminated Lacustrine Fine-Grained Sedimentary Rocks
摘要
Abstract
[Objective]Strong heterogeneity is the main feature of continental shale strata.Its characteristics are caused by the fact that the sedimentary environment of lacustrine fine grained rocks is close to the source area and the water depth is shallow,which is clearly controlled by hydrodynamic,climatic,structural,bioturbation,and other factors.In particular,the vertical composition,morphology,and structure of laminated fine-grained sedimentary rocks can exhibit significant differences at the millimeter scale.According to published literature statistics and analy-sis of previous research results,the reservoir physical properties and hydrocarbon accumulation ability of laminated fine-grained rocks are superior to the undeveloped/weakly developed laminated fine-grained rocks,exhibiting an excellent positive correlation with the development degree as well.However,the summary of relevant differences is still unclear and needs to be revealed.[Methods]Focusing on the relevant literature from the past ten years,the types and genesis of pores and fractures of laminated fine-grained sedimentary rocks were reviewed,the laminae sequence was divided into sandy and muddy laminae sequences,and the reservoir physical properties and hydrocar-bon accumulation characteristics and mechanism of different laminae sequences were described.[Conclusions and Prospects]The laminae structure has three advantages,frequent vertical change of material composition,abnormal development of internal micro-fractures,and concentrated distribution of organic matter in the laminae structure,fur-ther improving the ability of hydrocarbon accumulation on the basis of fine-grained sedimentary rocks.Five main con-trolling factors are summarized:laminae composition;laminae continuity;laminae sequence;abundance of organic matter;degree of thermal evolution of organic matter.In the future,it is necessary to combine the inorganic genetic mechanism of lamellar fine grained rock with the organic evolution model and establish the corresponding relationship between micro-lamellar types and combinations and the evaluation of macro-oil and gas sweet spots and high-quality reservoirs.关键词
纹层/细粒沉积岩/储集物性/油气富集/页岩储层Key words
laminae/fine-grained sedimentary rocks/reservoir physical property/hydrocarbon enrichment/shale reservoir分类
天文与地球科学引用本文复制引用
吴科睿,孙雨,闫百泉,杨佳奇,马志强,于利民,王鑫锐..纹层状湖盆细粒沉积岩储集物性及油气富集特征研究进展[J].沉积学报,2025,43(1):20-38,19.基金项目
海南省科技计划三亚崖州湾科技城自然科学基金联合项目(2021JJLH0077) （2021JJLH0077）
黑龙江省自然科学基金资助项目(ZD2023D002) （ZD2023D002）
国家自然科学基金项目(41872158)[Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City,No.2021JJ-LH0077 （41872158）
Heilongjiang Provincial Natural Science Foundation of China,No.ZD2023D002 （）
National Natural Science Foundation of China,No.41872158] （）
