CAJ | 학술논문

以IHS2009资料库14个主要盆地4400余个油气藏资料为基础，总结了南美西缘前陆盆地油气聚集特征，并对油气差异富集因素进行了分析，结果表明：（1）南美前陆盆地油气具有明显的分段性差异富集特征：①平面上油气主要富集在北段盆地（可采储量占总量85％），中段（6．9％）和南段盆地（8．1％）油气富集程度低；②纵向上北段盆地油气富集在上部白垩系和第三系储集层，中段盆地油气富集在侏罗系以下储集层，南段盆地富集在侏罗系和白垩系地层。（2）石油地质特征的分段性是油气差异聚集的主要控制因素：①烃源岩分段性发育决定油气平面富集位置；②储盖组合发育层位的分段性决定油气纵向富集层段。
이IHS2009자료고14개주요분지4400여개유기장자료위기출，총결료남미서연전륙분지유기취집특정，병대유기차이부집인소진행료분석，결과표명：（1）남미전륙분지유기구유명현적분단성차이부집특정：①평면상유기주요부집재북단분지（가채저량점총량85％），중단（6．9％）화남단분지（8．1％）유기부집정도저；②종향상북단분지유기부집재상부백성계화제삼계저집층，중단분지유기부집재주라계이하저집층，남단분지부집재주라계화백성계지층。（2）석유지질특정적분단성시유기차이취집적주요공제인소：①경원암분단성발육결정유기평면부집위치；②저개조합발육층위적분단성결정유기종향부집층단。
In order to study the hydrocarbon differential accumulation of the foreland basins in the western South America and its controlling factors, we collected over 4 400 data of 14 foreland basins within IHS2009 database. Several conclusions were made as followed. (1) The foreland basins have distinct segmental accumulation charac-ters. Hydrocarbon mainly accumulated in the north, accounting for 85% of total recoverable reserve, while in the center and south, only 6. 9% and 8. 1%, respectively. Vertically, hydrocarbon mainly distributes in the Upper Cretaceous and Tertiary reservoirs in the north, below Jurassic in the center, and in Jurassic and Cretaceous in the south. (2) The segmental features of petroleum geology controlled the differential accumulation of hydrocar-bon. The segmental development of source rocks determined the plane enrichment of oil and gas. The segmental development of reservoirs and cap rocks controlled the vertical distribution of hydrocarbon.