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海相碳酸盐岩油气田已成为中国乃至世界油气勘探的重要领域.由于碳酸盐岩沉积环境和相带类型多样、形成时间和埋深跨度大、成岩演化复杂、非均质性和孔洞缝发育的影响因素多,其沉积、成岩和成藏的复杂性造成碳酸盐岩油气田形成、分布和富集的特殊性.碳酸盐岩油气聚集并不严格受二级构造带的控制,多数是在一定的构造背景下主要受沉积成岩作用及其有利相带的控制,油气藏类型以岩性地层油气藏为主.通过国内外碳酸盐岩油气田形成的广泛调研,认为海相碳酸盐岩大中型岩性地层油气田的形成和分布受7个方面的主要因素控制.本研究对碳酸盐岩成藏规律的认识和下一步勘探具有一定的意义.
Marine carbonate oil and gas fields have become an important area for oil and gas exploration in China and the world.Due to carbonate sedimentary environment and various facies belt types, large time and depth of formation, the evolution of diagenesis is complex and heterogeneous, There are many influencing factors in the development of the carbonate rocks and the complexity of sedimentation, diagenesis and hydrocarbon accumulation cause the formation, distribution and enrichment of carbonate oil and gas fields.The carbonate oil and gas accumulation is not strictly controlled by the secondary structure zone, Is dominated by sedimentary diagenesis and favorable facies belts in a certain tectonic setting.The types of oil and gas reservoirs are mainly lithostratigraphic reservoirs.According to extensive research on the formation of carbonate oil and gas fields both at home and abroad, The formation and distribution of large and medium-sized lithologic strata of salt rock are controlled by seven major factors.The study has certain significance for the understanding of the hydrocarbon accumulation law and the next exploration.