张园园;蒋有录;刘景东;徐田武;吕雪莹;

• 1:中国石油大学(华东)地球科学与技术学院

• 2:中国石化中原油田分公司勘探开发研究院

摘要(Abstract)：

为分析东濮凹陷杜寨地区沙三中—下亚段致密砂岩储层演化与油气充注过程的耦合关系,综合运用铸体薄片、阴极发光、扫描电镜、荧光显微及流体包裹体等测试方法,明确杜寨地区沙三中—下亚段储层特征、成岩作用、成岩演化序列、储层孔隙度演化史和油气充注史等。结果表明:杜寨地区沙三中—下亚段处于中成岩B期至晚成岩阶段,在经历三期钙质胶结、三期溶蚀、持续压实的复杂成岩过程后,在斜坡带发育低孔低渗砂岩储层,在洼陷带发育特低孔特低渗致密砂岩储层。东营组沉积末期,储层尚未致密化,低熟—成熟有机质在斜坡带聚集形成常规型油气藏,在洼陷带附近形成"边致密边成藏"型致密砂岩油气藏。明化镇组沉积末期至今,储层致密,除少量油气向上运移、在斜坡带形成"边致密边成藏"型油气藏外,仍有大量晚期生成的天然气在洼陷带附近聚集,形成典型的"先致密后成藏"型致密砂岩气藏。

关键词(KeyWords)：深层致密砂岩;孔隙度演化;油气充注期;成岩—成藏匹配关系;杜寨地区;东濮凹陷

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05006-004)

作者(Author):张园园;蒋有录;刘景东;徐田武;吕雪莹;

Email:

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