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通过对四川盆地震旦系—寒武系沉积相、储集体和储层、烃源岩、古隆起演化等成藏条件的综合研究,认为:1长期继承性发育的大型古隆起、大型克拉通内裂陷、4套大面积分布的优质烃源岩、3套大面积分布的岩溶储层、原油裂解气是形成大面积高丰度油气聚集的有利条件;2古隆起不同部位发育不同的气藏成藏模式,继承性古隆起核部以古油藏“原位”裂解聚集成藏为主,继承性古隆起斜坡以晚期构造圈闭分散液态烃裂解成藏为主;3古隆起不同部位有不同的勘探方向,古隆起核部以寻找继承性古构造圈闭为主,也具备岩性地层气藏勘探的基础,古隆起斜坡以寻找大型高幅度喜马拉雅期构造圈闭为主。
Based on a comprehensive study of the accumulation conditions of the Sinian-Cambrian sedimentary facies, reservoirs and reservoirs, hydrocarbon source rocks and palaeohighs in the Sichuan Basin, it is considered that: 1 large paleohighs with long-term succession and large craton 4 sets of high-quality source rocks distributed over a large area and 3 sets of karst reservoirs distributed over large areas. Cracking gas from crude oil is favorable for the formation of large-area and high-abundance hydrocarbon accumulation. In the reservoir-forming model, the inherited paleohighs were dominated by the paleo-reservoirs “in situ ” pyrolysis and accumulation and accumulation, and the successional paleo-uplift slopes were dominated by the late tectonic traps of scattered liquid hydrocarbons. Different parts have different exploration directions. The paleo-uplift nuclear part mainly focuses on the succession of paleo-structural traps, and also has the basis of lithologic stratigraphic gas exploration. The paleo-uplift slopes mainly focus on large-scale high-amplitude Himalayan structural traps.