异常高压对储层成岩作用的控制

doi:10. 3863/j. issn. 1674 – 5086. 2013. 03. 005

摘要/Abstract

摘要：

以张家垛油田阜三段储层为例，在异常高压形成机理研究的基础上，利用铸体薄片、X 衍射和扫描电镜，对异
常高压储层的成岩作用进行研究。研究结果表明：（1）欠压实形成的高压可以抑制上覆地层的压实作用，使深埋储层
的碎屑颗粒仍保持点—线接触，储层剩余原生粒间孔是主要储集空间；（2）欠压实形成的高压系统由于其相对封闭性，
体系内外的物质交换相对缓慢，蒙脱石的伊利石化将受到抑制；（3）高压的封闭系统可以抑制石英的次生加大和铁方
解石的沉淀。因此，压力系数与储层储集物性具有较好的相关性，可以通过岩石学特征和异常压力研究来预测深部优
质储层的分布规律。

关键词: 异常压力, 欠压实, 成岩作用, 阜宁组, 张家垛油田

Abstract:

Taking the Fu 3 interval reservoir in Zhangjiaduo Oilfield as an example，based on mechanism research of abnormal
pressure，we study the impacts of overpressure on diagenesis with the cast thin section，XRD and SEM. Results of this study
demonstrates the following：（1）Abnormal pressure caused by under compaction can slow the rate of compaction，so framework
grains of deeply buried reservoirs show point to line contact and intergranular pores are still main pores.（2）Illitization of
smectite can be slowed by reducing mass transport by convection because of closed diagenetic system relatively caused by
under compaction.（3）Quartz overgrowth and ferroan calcite cement are restrained by overpressures and closed diagenetic
system. There is a good relationship between pressure coefficient and reservoir physical property. So，high quality reservoirs
can be predicted by petrology and pressure analysis.

Key words: abnormal pressure, under compaction, diagenesis, Funing Formation, Zhangjiaduo Oilfield

刘迪1，丁晓琪1，2，韩玫梅3. 异常高压对储层成岩作用的控制[J]. 西南石油大学学报(自然科学版), DOI: 10. 3863/j. issn. 1674 – 5086. 2013. 03. 005.

Liu di1, Ding Xiaoqi1，2, Han Meimei3. Govern of Abnormal Pressure on Reservoir Diagenesis[J]. 西南石油大学学报(自然科学版), DOI: 10. 3863/j. issn. 1674 – 5086. 2013. 03. 005.

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