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| 清洁压裂液对煤岩储层伤害的实验评价 | |
| 引用本文： | 周珺,伊向艺,卢渊,邱小龙,叶金亮. 清洁压裂液对煤岩储层伤害的实验评价[J]. 科技导报(北京), 2015, 33(4): 72-75. DOI: 10.3981/j.issn.1000-7857.2015.04.012 |
| 作者姓名： | 周珺 伊向艺 卢渊 邱小龙 叶金亮 |
| 作者单位： | 1. 成都理工大学能源学院, 成都610059; 2. 成都理工大学油气藏地质与开发工程国家重点实验室, 成都610059; 3. 贵州省地质矿产勘查开发局113地质大队, 六盘水553001; 4. 兰州兰石能源装备工程研究院有限公司, 兰州730050 |
| 基金项目： | 国家科技重大专项(2011ZX05037-003);高等学校博士学科点专项科研基金项目(20125122110017) |
| 摘 要： | 压裂液进入煤层后会带来一定的伤害,影响煤层气的产量。通过实验研究了清洁压裂液对煤层气解吸扩散和渗流的伤害机制。以沁水盆地煤岩为实验样品,利用自主研究的煤岩解吸装置和全模拟流体模拟微观分布实验系统,测试了清洁压裂对煤岩解吸量和地层水渗透率的伤害程度。研究表明,清洁压裂液对煤岩渗透率的伤害为30%,对煤层气解吸量的伤害率为24%,并且推迟了煤层气开始解吸的时间,降低了解吸的速率。通过电镜扫描、润湿性等测试,明确了清洁压裂液对煤岩的伤害机制。 |
| 关 键 词： | 煤层气 清洁压裂液 渗透率 解吸 润湿性 |
| 收稿时间： | 2014-08-06 |
Experimental and mechanism research of damage of clean fracturing fluids to coalbed methane |
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| ZHOU Jun;YI Xiangyi;LU Yuan;QIU Xiaolong;YE Jinliang. Experimental and mechanism research of damage of clean fracturing fluids to coalbed methane[J]. Science & Technology Review, 2015, 33(4): 72-75. DOI: 10.3981/j.issn.1000-7857.2015.04.012 | |
| Authors: | ZHOU Jun YI Xiangyi LU Yuan QIU Xiaolong YE Jinliang |
| Affiliation: | 1. School of Energy Resources, Chengdu University of Technology, Chengdu 610059, China; 2. State Key Laboratory of Oil and Gas Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 3. Brigade 113, Guizhou Bureau of Geology and Mineral Exploration & Development, Liupanshui 553001, China; 4. Lanzhou LS Energy Equipment Engineering Institute Co., Ltd., Lanzhou 730050, China |
| Abstract: | Coalbed would be damaged by fracturing fluid, which affects coalbed methane production. Clean fracturing fluid is studied through experiments on the diffusion of coalbed methane desorption and seepage damage mechanism to provide a theoretical basis for the selection of coalbed methane well fracturing fluid. Coal 3 from Qinshui basin is selected as test samples to conduct the desorption test after injecting fracturing liquids into the samples by using independently developed CBM desorption experimental apparatus and permeability test by microscopic distribution of fluid simulation experiment system. Research shows that permeability of coal is damaged by 30% and the desorption amount of damage rate is 24%. Clean fracturing fluid may postpone the coalbed methane desorption time and reduce the absorption rate. And then through the electron microscope scanning and wettability analysis, the damage mechanism of coal by clean fracturing fluid is found out. |
| Keywords: | coalbed methane clean fracturing fluid permeability desorption wettablilty |
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