亚诺斯盆地Cabiona区块油气成藏规律  

Study on reservoir occurrence rule in Cabiona block of Colombia

作　　者：张金伟[1] 闫爱英 柳文秀 胡俊峰[1] 杜笑梅 徐国盛[3] 傅恒[3] 

机构地区：[1]中国石化集团国际石油勘探开发有限公司,北京100083 [2]北京温菲尔德石油技术开发有限公司,北京100191 [3]成都理工大学能源学院,四川成都610059

出　　处：《油气地质与采收率》2012年第4期24-26,30,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"全球油气资源潜力分析与未来战略选区"(2008ZX05028)

摘　　要：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。Colombia, the fourth largest oil&gas production country in South America, is abundant of petroleum deposits. Cabiona block is located in the forebulge slope of the foreland basin Llanos in Colombia, where is expected to be preferential for hydrocarbon migration and accumulation. By stratigraphic correlation combining with sequcence and tectonic research, the sedimentary facies of the target formation Carbonera have been defined as deltaic facies, including two subfacies of delta-front and prodelta. Four microfacies of submerged distributary channel, inter-distribuary area, mouth bar and sheet sand are identified. On the base of hydrocarbon migration and distribution and trap features, reservoir accumulation mode is built, which is discribed as multiple migration with far source, fault controlled reservoir distribution, structure controlled accumulation, and reservoir properties controlled oil enrichment. Four kinds of oil reservoir are summarized as anticlinal reservoir, lithology-faulted nose-like reservoir, lithology-fault reservoir and fault-lithological reservoir. The results of the research are expected to be used in guiding the E&P work in Cabiona block.

关 键 词：前陆盆地 前隆斜坡 成藏规律 成藏模式 亚诺斯盆地 

分 类 号：TE112.3[石油与天然气工程—油气勘探]