【摘要】 盖层是油气成藏的基本要素之一。通过对盖层微观封闭特征 (物性封闭、压力封闭、烃浓度封闭等 )与宏观封闭特征 (岩性、埋深、单层厚度与累计盖层厚度、沉积环境和成岩程度等 )进行多参数的综合分析 ,利用层次分析法确定各参数的权重 ,并运用模糊数学评价的方法探讨盖层对天然气封闭的评价方案。把这一方法应用于川东天然气区的盖层评价中 ,其评价结果与勘探成果有较好的吻合性更多还原

【Abstract】 The sealing of caprocks is an important factor in the accumulation of natural gas.Through analyzing the micro and macro sealing mechanism of caprocks,applying a methods of fuzzy mathematics and analysis of layers,the research of evaluating project of caprocks is an experiment.Applying this method to evaluating the caprocks of east Sichan Area,the evaluating result is similar to the explored result.更多还原