长石砂岩次生溶孔的形成机理

doi:10.11743/ogg20050214

摘要/Abstract

摘要：

在酸性水介质条件下,长石类矿物都能发生程度不同的溶蚀反应并形成次生孔隙。根据原始矿物和次生矿物的组成和物理化学性质可以定量计算次生孔隙度。钾长石被溶蚀时形成的次生孔隙度最高,达11.91%,钙长石形成的次生孔隙度最低,为0.72%,钠长石和中长石形成的次生孔隙度介于两者之间。长石溶蚀过程中所需的CO₂,一部分来自大气降水或水与大气接触过程中所溶解的空气中的CO₂,另一部分则来源于有机质在生烃过程中的分解产物。

关键词: 长石砂岩, 溶蚀作用, 次生孔隙度

Abstract:

In acidic aqueous media, feldspar minerals can be dissolved to some extents, leading to the formation of secondary pores. Secondary porosity can be quantitatively estimated based on the composition and physicochemical properties of the original and secondary minerals. Secondary porosity formed by dissolution of K-feldspar can be as high as 11.91%, while that of calcium feldspar is the lowest, being only 0.27%, and that of sodium feldspar and andesine range between the former two. Some of the CO₂ needed for dissolving feldspar might have been sourced from meteoric water and/or dissolved from the air when water got in touch with atmospheric air, while the others might have been the products of decomposition of organic matter during generation of hydrocarbons.

Key words: arcose, dissolution, secondary porosity

中图分类号:

TE112.221

李汶国,张晓鹏,钟玉梅. 长石砂岩次生溶孔的形成机理[J]. 石油与天然气地质, 2005, 26(2): 220-223,229. doi: 10.11743/ogg20050214 Li Wenguo,Zhang Xiaopeng,Zhong Yumei. Formation mechanism of secondary dissolved pores in arcose[J]. Oil & Gas Geology, 2005, 26(2): 220-223,229. doi: 10.11743/ogg20050214

参考文献

[1] 姚光庆,孙尚如.煤系粗粒低渗储层自生粘土矿物特征及其对储层特征的影响-以焉耆盆地侏罗系三工河组油层为例[J].石油与天然气地质,2003,24(1):65～69Yao Guangqing,Sun Shangru.Characteristics of authigenic clay minerals in coarse-grained and low permeability reservoirs in coal measures and its effect on reservoir property:an example of oil reservoir in Jurassic Sangonghe formation in Yanqi basin[J].Oil & Gas Geo-logy,2003,24(1):65-69
[2] 蔡进功,谢忠怀,田芳,等.济阳坳陷深层砂岩成岩作用及孔隙演化[J].石油与天然气地质,2002,23(1):84～88Cai Jingong,Xie Zhonghuai, Tian Fang, et al. Diagenesis and pore evolution of deep sandstones in Jiyang depression[J]. Oil & Gas Geo-logy,2002,23(1):84-89
[3] 沈照理,朱宛华,钟佐繢.水文地球化学基础[M].北京:地质出版社,1993.10～11Shen Zhaoli,Zhu Wanhua,Zhong Zuoshen.The foundation of hydro-geochemistry [M].Beijing:Geological Publishing House,1993.10-11
[4] 张以明,侯方浩,方少仙,等.冀中饶阳凹陷下第三系沙河街组第三段砂岩次生孔隙形成机制[J].石油与天然气地质,1994,15(3):208～215Zhang Yiming,Hou Fanghao,Fang Shaoxian,et al. Secondary pore formation mechanism of third member of Shahejie Formation,Raoyang Depression[J]. Oil & Gas Geology,1994,15(3):208-215
[5] 汪正然,陈武.矿物学[M]. 上海:上海科学技术出版社, 1965.249～253Wang Zhengran,Chen Wu.Mineralogy[M]. Shanghai:Shanghai Publishing House of Science and Technology,1965. 249-253
[6] 王德滋.光性矿物学[M]. 上海:上海人民出版社, 1975.80 Wang Dezi. Optical mineralogy[M]. Shanghai:Shanghai People's Publishing House, 1975. 80
[7] 北京大学地质系岩矿教研室编.光性矿物学[M].北京:地质出版社, 1979.63～242 Teaching and Research Section under Geological Department,Beijing University. Texbook of optical mineralogy[M].Beijing:Geological Publishing House, 1979. 63-242
[8] 赵伦山,张本仁.地球化学[M].北京:地质出版社,1988.92Zhao Lunshan,Zhang Benren.Geochemistry[M]. Beijing:Geological Publishing House,1988.92
[9] Ishiwatari R,Rohrback B G, Kaplan I R. Hydrocarbon generation by thermal alteration of kerogen from different sediments[J]. AAPG Bull, 1978,62(4):678-692
[10] Espitalie J,Laporte J L,Madec M,et al. Methode rapide de caracterisation des roches meres de leur potential petrolier et de leur degre d'evolution[J].Rev Inst Frandais Petrol,1977,XXXⅡ(1):23-42
[11] 李汶国.各类干酪根不同成熟阶段生油量的探讨[J].石油与天然气地质, 1981,2(3):199～211Li Wenguo. A preliminary study of hydrocarbon production from various types of kerogen at different mature stages[J].Oil & Gas Geology,1981, 2(3):199-211
[12] 李汶国. 物质平衡法计算生油气率及其地质应用[J].石油实验地质,1988,10(1):1～11Li Wenguo. The oil/gas potential calculated by material balance and the application in geology[J]. Petroleum Geology & Experiment,1988,10(1):1-11
[13] 张晓鹏,李汶国,彭大经.有机二氧化碳在碳酸盐溶蚀孔隙形成中的作用及其定量探讨[J].海相沉积区油气地质,1988,2(2):63～71Zhang Xiaopeng,Li Wenguo,Peng Dajing.The action of organic carbon dioxide on the formation of carbonate solution pores and its quantitative approach[J]. Oil & Gas Geology of Marine Deposit Region,1988, 2(2):63-71

[1]	段金宝, 金民东, 范志伟, 朱祥, 刘雁婷. 四川盆地东北部中三叠统雷口坡组四段优质储层发育特征及勘探方向[J]. 石油与天然气地质, 2021, 42(4): 898-908.
[2]	杨天博, 何治亮, 金振奎, 张军涛, 李双建. 川西北中二叠统超深层白云岩储层孔隙结构及控制因素[J]. 石油与天然气地质, 2020, 41(1): 116-131.
[3]	于洲, 丁振纯, 王利花, 张道峰, 罗超, 魏源, 郭玮, 魏柳斌. 鄂尔多斯盆地奥陶系马家沟组五段膏盐下白云岩储层形成的主控因素[J]. 石油与天然气地质, 2018, 39(6): 1213-1224.
[4]	张玉银. 溶蚀作用对火山岩有效储层形成的控制作用——以松辽盆地徐家围子断陷营城组为例[J]. 石油与天然气地质, 2018, 39(3): 587-593.
[5]	魏巍, 朱筱敏, 谈明轩, 吴陈冰洁, 薛梦戈, 国殿斌, 蒋飞虎, 吕思翰. 查干凹陷早白垩世热流体活动的证据及其对巴音戈壁组碎屑岩储层的影响[J]. 石油与天然气地质, 2017, 38(2): 270-280.
[6]	唐颖, 樊太亮, 张涛, 王喆, 郑元超. 构造运动对扎格罗斯前陆盆地白垩系碳酸盐岩储层的影响——以Y油田为例[J]. 石油与天然气地质, 2016, 37(6): 944-951.
[7]	李永豪, 曹剑, 胡文瑄, 陆现彩, 范明, 张殿伟, 洪冬冬. 膏盐岩油气封盖性研究进展[J]. 石油与天然气地质, 2016, 37(5): 634-643.
[8]	薛宗安, 赵玉宏, 吴义平, 朱超, 许海龙, 边海光. 渤海湾盆地歧北斜坡沙河街组储层特征及形成机理[J]. 石油与天然气地质, 2015, 36(2): 280-287.
[9]	于川淇, 宋晓蛟, 李景景, 蒋双泽, 张连梁. 长石溶蚀作用对储层物性的影响——以渤海湾盆地东营凹陷为例[J]. 石油与天然气地质, 2013, 34(6): 765-770.
[10]	范明，何治亮，李志明，俞凌杰，张文涛，刘伟新，蒋小琼. 碳酸盐岩溶蚀窗的形成及地质意义[J]. 石油与天然气地质, 2011, 32(4): 499-505.
[11]	蔺军, 周芳芳, 袁国芬. 塔河地区寒武系储层深埋藏白云石化特征[J]. 石油与天然气地质, 2010, 31(1): 13-21,27.
[12]	王宝清, 徐文发, 刘站立, 孔繁忠, 常中原, 王春瑞. 三肇地区扶余和杨大城子油层储集层的成岩作用[J]. 石油与天然气地质, 2001, 22(1): 82-87.
[13]	张以明, 侯方浩, 方少仙, 朱连儒, 陶洪兴. 冀中饶阳凹陷下第三系沙河街组第三段砂岩次生孔隙形成机制[J]. 石油与天然气地质, 1994, 15(3): 208-215.
[14]	邢顺洤, 姜洪启. 松辽盆地砂岩储层的成岩模式与孔隙演化[J]. 石油与天然气地质, 1990, 11(4): 351-360.