| 川东地腹区长兴礁岩的成岩作用和孔隙演化特征 |
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| 引用本文： | 李心如,刘效曾.川东地腹区长兴礁岩的成岩作用和孔隙演化特征[J].成都理工大学学报(自然科学版),1991(1). |
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| 作者姓名： | 李心如 刘效曾 |
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| 作者单位： | 四川石油管理局川东钻探公司
(李心如)，成都地质学院石油系(刘效曾) |
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| 摘 要： | 川东地腹区长兴组生物礁的主要成岩作用为泥晶化、填积、胶结、白云化和溶蚀作用。其中白云化和溶蚀作用对次生孔隙发育起控制作用。上覆致密碳酸盐岩、泥质岩类等是很好的盖层,因此,礁气藏是典型的岩性-成岩圈闭型气藏。对北部、东部的“干死型”和南部、西部的“淹死型”生物礁成岩序列也有叙述。
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| 关 键 词： | 天然气藏 生物礁相 成岩类型 孔隙演化 |
DIAGENESIS AND POROSITY EVOLUTION OF THE SUBSURFACE REEFS OF CHANGXING FORMATION, UPPER PERMIAN IN EASTERN SICHUAN |
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| Li Xinru ,Liu Xiaozeng.DIAGENESIS AND POROSITY EVOLUTION OF THE SUBSURFACE REEFS OF CHANGXING FORMATION, UPPER PERMIAN IN EASTERN SICHUAN[J].Journal of Chengdu University of Technology: Sci & Technol Ed,1991(1). |
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| Authors: | Li Xinru Liu Xiaozeng |
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| Institution: | Li Xinru ;Liu Xiaozeng |
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| Abstract: | The main diagenetic processes of Changxing reefs are: micritization, filling, cementation,dolomitization and dissolution. Among them dolomitization and dissolution are the controlling factorsfor the development of secondary porosity. The dense carbonates and mudstones constitute the cap rocksof the reef reservoirs. Hence, the natural gas pools accumulated in the reefs are of lithologic-diagenetictraps. Diagenetic sequences of both dried and drowned reef types located in the north-east and south-west respectively are presented. |
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| Keywords: | natural gas pool reef facies diagenetic pattern porosity evolution |
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