| 碎屑岩骨架颗粒溶解的热力学模型及地质意义 |
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| 引用本文： | 张萌1,黄思静1,冯明石2,王琦2,黄裕雄2,董少峰2,彭美丽2. 碎屑岩骨架颗粒溶解的热力学模型及地质意义[J]. 延边大学学报(自然科学版), 2006, 0(4): 21-25 |
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| 作者姓名： | 张萌1 黄思静1 冯明石2 王琦2 黄裕雄2 董少峰2 彭美丽2 |
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| 作者单位： | 1.成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059;2.成都理工大学地球科学学院,四川成都610059 |
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| 摘 要： | 基于热力学平衡原理,探讨了不同温压条件下,碎屑岩在成岩过程中各种骨架颗粒溶解相关的9个反应吉布斯自由能增量和平衡常数的计算结果说明:各种骨架颗粒(钾长石、钠长石、钙长石以及铁镁暗色矿物中的辉石、角闪石等)在成岩过程中的稳定性都较弱,抗溶蚀能力都不高;铁镁暗色矿物和中基性斜长石在碎屑岩的成岩条件酸性介质中,比酸性斜长石和碱性长石更易发生溶解,形成次生溶蚀孔隙,为油气的储集和运移提供空间和通道。
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| 关 键 词： | 碎屑岩 骨架颗粒 溶解 热力学模型 地质意义 |
Thermodynamics Model for Dissolution of Petrogenetic Minerals of Clasolite and Its Geological Significances |
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| ZHANG Meng1,HUANG Si-jing1,FENG Ming-shi2,WANG Qi2,HUANG Yu-x iong 2,DONG Shao-feng2,PENG Mei-li2. Thermodynamics Model for Dissolution of Petrogenetic Minerals of Clasolite and Its Geological Significances[J]. Journal of Yanbian University (Natural Science), 2006, 0(4): 21-25 |
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| Authors: | ZHANG Meng1 HUANG Si-jing1 FENG Ming-shi2 WANG Qi2 HUANG Yu-x iong 2 DONG Shao-feng2 PENG Mei-li2 |
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| Affiliation: | 1. State Key Laboratory o fOil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu610069, Sichuan, China; 2. School of Earth Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China |
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| Abstract: | According to equilibrium principle of thermodynamics, this paper calculates the increment of Gibbs freeenergy(ΔG)and equilibrium constant(K)of the nine chemical reactions for dissolution of petrogenetic minerals ofclasolite related to clastic diagenesis under different temperatures and pressures.The result of calculation showsthat these petrogenetic minerals(i.e. K-feldspar, albite, anorthite, pyroxene and hornblende)related to clastic di-agenesis have comparatively weak stability to fight corrosion;The femic dark minerals, neutral and basic plagio-clase are much more easy to dissolute and even to appear more secondary interstice in acid solution than acid pla-gioclase and alkali feldspar,which can offer space and passageway for reservoir rock. |
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| Keywords: | clasolite petrogenetic mineral dissolution thermodynamic model geological significances |
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