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中国覆盖区海相地层(以古生界为主)勘探多年,勘探发现与预期结果差距甚大,认为主要原因是我国石油地质家对海相油气富集及分布规律的认识甚少。我国海相盆地与国外富油气海相盆地差异显著:①时代老;②有机质丰度低;③有机质热演化程度高;④勘探目的层埋藏深;⑤油气藏保存条件差。必须开展多学科联合研究,从新的角度加快研究3个基础理论问题:①成盆理论,要进行地球动力学和盆地沉积建造类型、地层样式及地层成岩事件研究;②成烃理论,要进行古生物学、古海洋学、古环境化学、沉积学、有机岩石学、有机地球化学和物理化学研究,研究不能受干酪根热降解成烃学说的束缚,有可能提出更适于我国古生代海相盆地的新成烃理论;③成藏理论,要揭示以碳酸盐岩为主的地质体中的油气运移问题,建立油气充注成藏过程的物理化学场模型,并以动态平衡观点建立油气藏调整模型。(王孝陵摘)
The exploration in the marine strata (dominated by the Paleozoic) in China’s coverage area has been under exploration for many years. The difference between the exploration findings and the expected results is very large. The main reason is that petroleum geologists in our country have little understanding of the laws of enrichment and distribution of marine hydrocarbons. There are significant differences between marine basins in China and overseas rich-gas marine basins: (1) old age; (2) low abundance of organic matter; (3) high degree of thermal evolution of organic matter; (4) deep buried exploration target; (5) poor preservation conditions of oil and gas reservoirs. We must carry out a multidisciplinary joint research to speed up the study of three basic theoretical issues from a new perspective: ① into the basin theory, to carry out geodynamics and sedimentary basin construction type, stratigraphic and stratigraphic diagenetic events; ② hydrocarbon generation theory, to carry out paleontology Studies of ancient oceanography, paleoenvironmental chemistry, sedimentology, organic petrology, organic geochemistry and physical chemistry can not be restrained by the theory of hydrocarbon generation by thermal degradation of kerogen. It is possible to propose a new method that is more suitable for the Paleozoic marine basins in China New hydrocarbon generation theory; (3) reservoir formation theory, we should reveal the hydrocarbon migration in the carbonate-based geological body, establish the physical-chemical field model of hydrocarbon accumulation process, and establish the reservoir from the perspective of dynamic equilibrium Adjust the model. (Wang Xiaoling pick)