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扬子地块中、新生代宏观构造演化和动力学的差异制约着中、古生界海相油气成藏。通过对扬子地块印支期以来构造演化的分析和扬子地块不同段典型油气藏的解析,显示差异的构造演化造成扬子地块不同段的主要烃流体源、保存环境和成藏演化的不同。上扬子地块的烃流体源以油裂解气和干酪根裂解气为主,海相地层中整体封闭环境发育,存在古油藏—早期气藏—晚期气藏的成藏演化系列,具有早期成藏、后期转化、晚期聚气的成藏模式。中、下扬子地块的烃流体源主要为二次生烃和海相早期原生油气源,在陆相地层与海相地层中均存在封闭体系,具有反复的成藏、改造、成藏、破坏的成藏演化过程,在断陷反转区具有下生上储、原生残余油气藏以及二次生烃等成藏模式,而在反转断块区可能的成藏模式包括原生残余成藏和晚期次生成藏。
In the Yangtze block, differences in macro-structural evolution and dynamics of the Cenozoic have restricted the formation of marine oil and gas reservoirs in the Meso-Paleozoic. Through the analysis of the tectonic evolution of the Yangtze block since the Indosinian period and the analysis of different typical reservoirs in the Yangtze block, it is shown that the tectonic evolution of the delta resulted in the different hydrocarbon source, storage environment and evolution of the reservoirs in different segments of the Yangtze block . The hydrocarbon fluid source in Upper Yangtze block is dominated by oil cracked gas and kerogen pyrolyzed gas, and the overall enclosed environment in the marine strata is developed. There are paleo-reservoir-early gas reservoir-reservoir evolution series of late gas reservoirs with early Tibet, late conversion, accumulation of late gas accumulation mode. Hydrocarbon fluid sources in the middle and lower Yangtze blocks are mainly secondary hydrocarbon generation and early marine source oil and gas sources. There are closed systems in continental and marine strata, with repeated hydrocarbon accumulation, alteration, accumulation and destruction In the faulted-reverse zone, there are subsurface upper reservoirs, primary residual reservoirs and secondary hydrocarbon generation. The possible reservoir-forming modes in the inverted fault block include the primary residual reservoir formation and Late generation reservoir.