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利用油气碳同位素、生物标志化合物等地球化学分析手段,明确了满加尔凹陷及塔中深层寒武系-下奥陶统烃源岩、古油藏裂解气是形成塔中Ⅰ号坡折带大型凝析气田的主要烃源;利用包裹体、储集层地球化学分析技术,结合烃源岩演化史、构造发展史以及储集层演化史对成藏期次及油气运移聚集进行研究,指出塔中Ⅰ号断裂及晚期深大走滑断裂、塔中古隆起形成过程中的多期不整合是礁滩复合体油气成藏的主要油气输导体系;晚加里东运动期是油气聚集期,晚海西运动期是古油藏油气调整期,喜马拉雅运动期是古油藏裂解气对早期油藏气侵的多期充注期;礁滩复合体强非均质性和输导体系的差异是导致流体分布复杂的主要因素;指出了塔中Ⅰ号坡折带外带富气、内带富油分布的油气分布规律,丰富了塔里木盆地海相碳酸盐岩油气成藏理论。
Using geochemical analysis methods such as hydrocarbon isotopes and biomarkers, the Cretaceous sag and the deep Cambrian-Lower Ordovician hydrocarbon source rocks in Manjiaer Depression and the Lower Paleozoic were identified. The pyrolysis gas in the paleo-reservoir was a large-scale Condensate gas field; using the technologies of inclusions and reservoir geochemistry, combining with the evolution history of hydrocarbon source rocks, tectonic evolution history and evolution history of reservoirs to study the period of hydrocarbon accumulation and hydrocarbon migration and accumulation, Tazhong Ⅰ fracture and late deep strike-slip fault. The multiphase unconformity during the formation of Tazhong paleo-uplift is the main oil and gas transport system for hydrocarbon accumulation in the reef-shoal complex. During the Late Caledonian movement, The Hercynian movement period is the period of oil-gas adjustment in the paleo-oil reservoirs. The Himalayan movement period is the multi-period charge period of the paleo-oil reservoir pyrolysis gas to the early reservoir gas invasion. The strong heterogeneity of the reef bank complex and the difference of the transmission system are Which lead to the complicated fluid distribution. The oil and gas distribution of rich oil-bearing and oil-rich distribution in Tazhong Ⅰ slope belt is pointed out, which enriches the hydrocarbon accumulation theory of marine carbonate rocks in Tarim Basin.