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四川盆地在不同地质历史时期 ,形成了不同规模及不同控气作用的古隆起。加里东期的古隆起因受后期多期改造 ,分布复杂 ;海西 -印支期主要发育开江古隆起 ,为继承性发育的古隆起 ;印支期泸洲古隆起是川西前陆盆地的前隆 ;燕山期的江油 -绵竹和大兴两个古隆起明显向坳陷扩展。上述古隆起不仅改造了储层性能 ,其古圈闭为油气早期聚集提供了场所 ,而且延缓了生烃时间 ,有利于油气晚期成藏。因此 ,四川盆地的古隆起是油气勘探的重要领域。
In different geological history, the Sichuan Basin formed paleohighs with different scales and different functions of controlling gas. The paleo-uplift of Caledonian was complicated by the later multi-period transformation and the distribution was complicated. Hercynian-Indosinian mainly developed Kaijiang paleohigh, which was the ancient uplift of inheritance; Indosinian Luzhou paleohigh uplift was the Qianlong; Jiangyou period of Yanshanian - Mianzhu and Daxing two ancient uplift significantly extended to the depression. The paleo-uplift not only remodeled the reservoir performance, but the paleo-traps provided a place for the early accumulation of oil and gas, delayed the hydrocarbon generation time and facilitated the hydrocarbon accumulation in the late stage. Therefore, the paleo-uplift of the Sichuan Basin is an important area for oil and gas exploration.