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long dong di qu yan chang zu chang 8 you ceng zu you ji zhi zu cheng te zheng ji di zhi yi yi
Author(s): 
Pages: 33-37
Year: Issue:  2
Journal: Petroleum Geology and Engineering

Keyword:  鄂尔多斯盆地陇东地区异常低压有机质组成延长组;
Abstract: 地层条件下原油的密度、黏度、凝固点是衡量原油流动性能和产能的重要指标,也是影响地层压力的关键,与储集层中有机质组成密切相关.综合应用热蒸发烃气相色谱、岩石热解、核磁共振、荧光显微图像等多种储集层流体性质判别手段,分析了鄂尔多斯盆地陇东地区延长组长8油层组有机质组成特征及其对流体性能和地层压力的影响,结果表明,储集层中有机质含有较高的胶质沥青质等重质组分是导致地层条件下可动油含量低、试油与预期不符的原因;包括溶解气在内的地层条件下储集层中有机质的组成、丰度及其纵向分布特征是导致地层异常低压重要原因之一.
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