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麦哲伦盆地为南美洲智利最主要的含油气盆地,国内外目前关于该盆地的勘探潜力研究较少,本文综合烃源岩、储层、圈闭等多方面成藏要素进行分析,探讨了盆地油气成藏特征及含油气系统,预测了盆地油气富集规律,以期能够为盆地未来的油气勘探提供依据与帮助。盆地的构造演化及沉积充填可以划分为同裂谷阶段、裂后阶段与前陆阶段共3个期次;下白垩统Pampa Rincon组海相黑色页岩为该盆地最重要的烃源岩,认识到上侏罗统—下白垩统Springhill组海陆过渡相砂岩储层是盆地的主要储层;盆地主力烃源岩自白垩纪时期开始大量生排烃,以多条沟通油源的深大断层垂向运移聚集为主,总体上盆地以天然气发现为主。
The Magellan Basin is the most important petroliferous basin in Chile of South America. At present, there are few researches on the exploration potential of the basin at home and abroad. Based on the analysis of various reservoir forming elements such as source rocks, reservoirs and traps, Reservoir forming characteristics and hydrocarbon-bearing systems, and predicting the laws of oil and gas enrichment in the basin in the hope of providing the basis and help for future oil and gas exploration in the basin. The tectonic evolution and sedimentary filling of the basin can be divided into three stages: the same rifting stage, the post-fracture stage and the foreland stage. The marine black shale in the Lower Cretaceous Pampa Rincon Formation is the most important source rock in the basin. To the Upper Jurassic-Lower Cretaceous Springhill Formation, the sandstone reservoir of the transitional facies is the main reservoir of the basin. The main source rocks of the basin started to generate large quantities of hydrocarbons during the Cretaceous period, with multiple deep faults Mainly to the migration and accumulation, as a whole, the discovery of natural gas in the basin.