评价天然气成熟度及运移的新方法  

A New Method of Evaluation of Maturity and Migration of Natural Gas With Geochcmical Multi-parameters

作　　者：李西爱[1] 李银花[2] 许杰[2] 田东恩[1] 刘合义[1] 

机构地区：[1]中原油田分公司试采二处 [2]中原油田分公司勘探开发科学研究院

出　　处：《断块油气田》2002年第2期55-56,共2页Fault-Block Oil & Gas Field

摘　　要：为了提高综合评价天然气藏的成熟度、聚集效率及运移分馏结果 ,更全面反映气藏性质 ,有针对性提出气藏勘探方案。AlainPrinzhofer提出的应用天然气C1 - 4 组份及同位素比值等 1 1项天然气地化参数与天然气藏上述各属性间的相关性 ,并用盖斯塔图表达了它们之间的关系 ,对某多层油田天然气样品作盖斯塔图 ,进行气藏成熟度、聚集效率及运移分馏分析 。Geochemical multiparameters of showing natural gas chemical proportions from methane to normal butane and all the C 1~C 4carbon isotopic ratios are used as a new method to evaluate maturity,accumulation efficiency and segregative migration of gas pools.The correlation between 11 geochimecal parameters and three characterizations of a gas pool mentioned above was expounded .Gastar Diagram is used to illustrate this correlation.An analysis of a multilayered field on maturity,accumulative efficiency and segregative migration using Gastar Diagram shows that this method can be used to reconstructure gas history,and providing guide to look for new gas pools.

关 键 词：同位素比值 聚集效率 运移分馏 评价 天然气 成熟度 运移 

分 类 号：P618.130.1[天文地球—矿床学] TE12[天文地球—地质学]