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四川盆地西北地区中坝构造须家河二段上部,找到含凝折气油的工业气藏,这一发现不仅使我们进一步认识到构造圈闭对油气聚集所起的作用,而且也使我们开始认识到岩性、岩相条件对油气形成和富集有着十分重要意义。本文主要根据川西北地区几口钻井资料,对须家河二段的砂岩的成岩后生作用特征及对储集性能的影响进行初步探讨。岩石的成岩后生作用是复杂的物理化学变化过程,这些变化不断的改变着岩石的本来面目,并且也不同程度地改变着岩石的储集条件。本区须家河二段
The discovery that an industrial gas reservoir with gas condensate is found in the upper part of the Second Member of Xujiahe in the Zhongba Formation in the northwestern part of the Sichuan Basin not only gives us a further insight into the role of structural traps in hydrocarbon accumulation but also starts Recognizing lithology and lithofacies conditions are of great importance to the formation and enrichment of oil and gas. This paper mainly based on a few wells in northwestern Sichuan drilling data, the Xujiahe second sandstone diagenesis after diagenesis and reservoir characteristics of the preliminary study. Diagenesis of rocks is a complex process of physicochemical changes, these changes continue to change the true nature of the rock, and also varying to varying degrees of rock storage conditions. Second District Xujiahe District