巴音戈壁凹陷石油地质特征

巴音戈壁凹陷位于塔木察格盆地东部,构造单元隶属于塔木察格盆地巴音桑布尔坳陷。分析了巴音戈壁凹陷的石油地质条件,认为巴音戈壁凹陷的生储盖条件优越,铜钵庙组和南屯组是主要生烃岩层,其中铜钵庙组以非烃源岩为主,有机质类型较差,母质类型以Ⅲ型为主;南屯组为差~中等烃源岩,暗色泥岩厚度较大,母质类型以Ⅱ~Ⅲ型为主;大磨拐河组为中等~好烃源岩,暗色泥岩厚度最大,母质类型以Ⅱ2~Ⅱ1型为主。铜钵庙组、南屯组烃源岩均处于低成熟-成熟阶段。铜钵庙组和南屯组为主要储集层,其中铜钵庙组砂岩储层发育,厚度大,物性较好。大磨拐河组、南屯组均发育较好的区域盖层。烃源岩发育程度是油气成藏的前提条件和基础,它决定了区域勘探潜力和勘探前景。

Study on the Comprehensive Petroleum Geological Characteristics of Bayin Gobi Sag in Tamtsag Basin

Bayin Gobi Sag is located in the east part of Tamsag basin,Geotectonic Units belongs to the Bayinsanbuar depression of tamtsag basin.By means of the analysis of petroleum geologic condition of the Bayin Gobi sag,the preliminary results show that There is the favorable condition of source-reservoir-cap rock in the Bayin Gobi Sag,Tongbomiao formation and Nantun formation are responsible for the major of hydrocarbon generation.On the one hand,Tongbomiao formation is non-hydrocarbon source rock and have worse o...