【摘要】 波拿巴盆地油气及伴生的CO2气体分布特征明显:垂向上,油气主要分布在中上侏罗统Plover/Mont-ara组;平面上,石油主要分布在盆地西部,天然气和凝析油主要分布在盆地东部;气田中普遍含CO2,靠近控盆断裂处气田CO2含量高,而位于台地上气田中CO2含量低。根据该盆地构造—沉积演化和石油地质特征,盖层质量控制了油气垂向分布;主力烃源岩有机质类型和成熟度,以及保存条件控制了油气的平面分布;CO2形成过程及运移过程决定了其含量高低。更多还原

【Abstract】 For both hydrocarbon and accompanying CO2 in Bonaparte Basin,their distribution features are as follows: vertically,hydrocarbon is mainly in the middle and upper Jurassic Plover and Montara formations;laterally,oil is in the west of Bonaparte Basin,and gas and gas condensate mainly in the east;and CO2 may often found in some gasfields,high content in many ones near basin controlling fault and low content always in many ones at the platform,respectively.In addition,the structural and sedimentary evolution and petroleum geological attribute are studied.Results show that:(1) caprock quality may control the vertical distribution of hydrocarbon;(2) the organic-matter type and maturity of main source rock and the conservation condition may control the lateral distribution;and(3) the CO2-forming and migration process decide CO2 quantity.更多还原