论文部分内容阅读
Cabiona区块位于哥伦比亚境内亚诺斯盆地的前隆斜坡构造带上,是前陆盆地油气运移和聚集的重要场所,具有较为有利的油气成藏条件。在地层和构造特征分析的基础上,通过层序地层划分和沉积相研究,确定研究区主要目的层卡沃内拉组主要为三角洲沉积,以三角洲前缘和前三角洲沉积亚相为主,可进一步识别出水下分流河道、河口坝、席状砂和水下分流河道间4种沉积微相。应用现代石油地质学理论,从输导体系、圈闭特征和油气分布等方面开展研究,总结出远源复合输导,断层控制油气分布,构造位置控制油气聚集,储层物性影响油气富集的油气成藏模式,主要发育断背斜或背斜、岩性-断鼻、岩性-断层和断层-岩性4种类型油气藏。
The Cabiona block is located on the Qianlong structural belt of the Yanos Basin in Colombia. It is an important site for hydrocarbon migration and accumulation in the foreland basin and has favorable conditions for hydrocarbon accumulation. Based on the analysis of stratigraphy and tectonic features, through the study of sequence stratigraphic division and sedimentary facies, it is confirmed that the Cabornella Formation of the main target layer in the study area is mainly deltaic sedimentation, with the sedimentary subfacies in the delta front and the former delta mainly Four kinds of sedimentary microfacies between underwater distributary channel, estuary dam, sand sheet and underwater distributary channel are further identified. Based on the theory of modern petroleum geology, this paper studies the transport system, trapping characteristics and hydrocarbon distribution, and summarizes far-source composite transport, fault-controlled hydrocarbon distribution, structural position control, hydrocarbon accumulation, and reservoir physical properties. There are four types of reservoirs, which are fractured anticline or anticline, lithology-faulted nose, lithologic-fault and fault-lithology.