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| 埋藏有机酸性流体对四川盆地东北部飞仙关组储层的溶蚀改造作用：溶解动力学实验研究 | |
| 引用本文： | 黄康俊,王炜,鲍征宇,谢淑云,万能,梅廉夫,钱一雄.埋藏有机酸性流体对四川盆地东北部飞仙关组储层的溶蚀改造作用：溶解动力学实验研究[J].地球化学,2011,40(3):289-300. |
| 作者姓名： | 黄康俊 王炜 鲍征宇 谢淑云 万能 梅廉夫 钱一雄 |
| 作者单位： | 1. 中国地质大学地球科学学院,湖北武汉,430074;中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉,430074 2. 中国地质大学地球科学学院,湖北武汉,430074 3. 中国地质大学构造与油气资源教育部重点实验室,湖北武汉,430074 4. 中国石油化工股份有限公司石油勘探开发研究院,无锡石油地质研究所,江苏无锡,214151 |
| 基金项目： | 国家科技重大专项(2008ZX05005-002-007HZ); 中国地质大学(武汉)构造与油气资源教育部重点实验室开放课题(TPR-2009-11) |
| 摘 要： | 通过白云岩化鲕粒灰岩与0.1 mol/L乙酸的旋转盘溶解动力学实验,研究了深埋藏中有机质热演化过程中伴生的有机酸对鲕粒灰岩储层的改造作用机理.结果显示,白云岩化鲕粒灰岩溶解反应的速率在3.26×10-7～6.66×10-7 mol/(cm2·s)之间,并且溶蚀速率随温度和转速的增加而增大.反应前后样品表面的扫描电子显微... |
| 关 键 词： | 飞仙关组 白云岩化鲕粒灰岩 埋藏溶蚀作用 有机酸流体 旋转盘酸-岩反应动力学实验 四川盆地 |
Dissolution and alteration of Feixianguan Formation in the Sichuan Basin by organic acid fluids under burial condition: Kinetic dissolution experiments |
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| HUANG Kang-jun,WANG Wei,BAO Zheng-yu,XIE Shu-yun,WAN Neng,MEI Lian-fu,QIAN Yi-xiong.Dissolution and alteration of Feixianguan Formation in the Sichuan Basin by organic acid fluids under burial condition: Kinetic dissolution experiments[J].Geochimica,2011,40(3):289-300. | |
| Authors: | HUANG Kang-jun WANG Wei BAO Zheng-yu XIE Shu-yun WAN Neng MEI Lian-fu QIAN Yi-xiong |
| Institution: | HUANG Kang-jun1,2,WANG Wei1,BAO Zheng-yu1,XIE Shu-yun1,WAN Neng1,MEI Lian-fu3 and QIAN Yi-xiong4 1.Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,China,2.State Key Laboratory of Geological Processes and Mineral Resources,3.Key Laboratory of Tectonics and Petroleum Resources(China University of Geosciences),Ministry of Education,4.Wuxi Petroleum Geology Institute,Exploration & Production Institute,SINOPEC,Wu... |
| Abstract: | In order to study the control factors and mechanism of oolitic limestone reservoir corrosion by organic acid produced in burial stage. The reactions of acetic acid （initial 0.1 mol/L） with oolitic limestone were investigated using the rotating-disk corrosion reactor system （CRS）. The results indicate that dissolution rates of dolomitic oolite limestone are between 3.26× 10^-7 and 6.66×10^-7 mol/（cm2 . s）, and dissolution rates increase as temperature or disk rotation speed increasing. The values of Ea decrease with disk rotation speed from 7.89 to 9.64 kJ/mol, it demonstrates that these reactions are controlled by mass-transfer process. Scanning Electron Microscope images and EDX spectrum data also indicate the same view. Besides, SEM images and EDX spectrum data show the dissolution of calcite matrix is more intense than ooids comprise with dolomite. Dissolution at higher temperature was even more pronounced, generating the interooid pore space and oomolds. The surface of ooids reacted at temperature exceed 80 ~C was found to be covered with rufous layers. These are identified as ferric hydroxide using EDX spectrum, which might inhibit the formation of secondary pores in ooids. In summary, dissolution and alteration of Feixianguan Formation by organic acid fluids under burial condition should not be neglected during the process of the secondary pore formation. The intergranular pores which formed after the calcite cement between ooids had been dissolved, the intragranular dissolved pores and mould pore in dolomitic ooids are primary reservoir space in Feixianguan Formation of the Sichuan Basin. |
| Keywords: | Feixianguan Formation dolomitic oolite limestone burial dissolution organic acid fluids the rotating-disk corrosion reactor system Sichuan Basin |
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