中文摘要：

中国海相碳酸盐岩层系油气资源量大，但探明程度低，是油气资源战略接替的重要领域。中国海相碳酸盐岩层系具有形成时代老、改造强烈、沉积中心与生烃中心不吻合、储层具有多样性且非均质性强、多烃源层、多期生烃、多期成藏、多期调整与改造等显著特点，与陆相碎屑岩层系有明显差别，又有别于国外海相碳酸盐岩层系。在对不同地区海相碳酸盐岩层系油气地质条件进行分析解剖的基础上，分别对四川盆地、中下扬子及滇黔桂地区、塔里木盆地、鄂尔多斯盆地、渤海湾盆地和青藏地区的海相碳酸盐岩层系油气勘探战略选区急需解决的地质问题进行了讨论。

英文摘要：

Marine carbonate sequences in China are rich in petroleum resources, but they are underexplored. So they are the important strategic successor field of petroleum resources. China＇s marine carbonate sequences are characterized by old depositional ages, strong structural modification, inconsistency of depocenters with hydrocarbon-generating centers, high diversity and strong and heterogeneity of reservoirs, diversity, multi-layer source rocks, multistage hydrocarbon generation and accumulation and polyphase readjustment and reworking. These characteristics are in sharp contrast with those of continental clastic sequences and also different from those of marine carbonate sequences in other countries. Based on an integrated analysis of the petroleum geological conditions of marine carbonate sequences in various areas of China, the paper also discusses the strategic petroleum exploration area selection in marine carbonate sequences and geological problems in need of immediate solution in the Sichuan basin, Middle and Lower Yangtze valley, Yunnan-Guizhou-Guangxi area, Tarim basin, Ordos basin, Bohai Bay basin and Qinghai-Tibet Plateau.