水基压裂液的储层伤害机理实验研究.pdf

2016年3月
西安石油大学学报(自然科学版
第31卷第2期
ournal of Xi'an Shiyou University(Natural Science Edition)
Vol 31 No. 2
DOL:10.3969/j.isn.1673-064X.2016.02.014
中图分类号:TE357.12
文章编号:1673-064X(2016)02-008706
文献标识码:A
水基压裂液的储层伤害机理实验研究
曾彦趋,曲占去,郭天魁,许华儒,袭迪光
(中国石油大学(华东)石油工程学院,山东青岛266580)
摘要:运用核磁共振技术从徽观角度系统分析了水基压裂液对储层的不同伤害机理。结合常规流动实验,提
出了一套评价压裂液对储层伤害的综合性实验方法,建立了每种伤害杋理与伤害程度间的对应关系。实验
研究结果表明,压裂液渗入岩心后均会不同程度地造成岩心内東缚水増加、可动水滞留以及固相大分子物质
的吸附,从而引起储层渗透率降低,并且对于不同渗透性岩心其伤害规律大不相同,較低渗透率岩心的伤害
率比较高渗逶率岩心的伤害率普遍要大。
关键词:水基压裂液;储层伤害;黏土伤害;水锁伤害;核磁共振
Experimental Study on Damage Mechanism of Water-based
Fracturing Fluid to Reservoir
CAO Yanchao, QU Zhanqing, GUO Tiankui, XU Huaru, GONG Diguang
(Faculty of Petroleum Engineering, China University of Petroleum(East China),Qingdao 266580, Shandong, China)
Abstract: The different microscopic damage mechanisms of the water-based fracturing fluid to reservoir are studied using NMR tech-
nique, a set of comprehensive experimental mcthods for evaluating the reservoir damage of the fracturing fluid are put forward based on
conventional flow experiment, and the damage degree of each damage mechanism is obtained. Experimental results show that the infiltra
tion of the fracturing fluid will cause the increase of irreducible water, the retention of movable water and the adsorption of solid macro
molecules on different degree, and therefore reduce reservoir permeability. Meanwhile, the damage laws of different permeability cores
are different, and the damage of the fracturing fluid to low permeability ores is generally greater than that to high permeability cores
Key words: water-based fracturing fluid; reservoir damage; clay damage; water locking damage; nuclear magnetic resonance(NMR)
曹彦超,曲占庆,郭天魁,等.水基压裂液的储层伤害机理实验研究J].西安石油大学学报(自然科学版),2016,31(2):87-92
98
CAO Yanchao, QU Zhanqing, GUO Tiankui, et al. Experimental study on damage mechanism of water-based fracturing fluid to reservoir
[J ] Journal of Xian Shiyou University(Natural Science Edition), 2016, 31(2): 87-92, 98
收稿日期:2015-09-12
基金项目:国家自然科学基金青年基金项目“径向钻孔引导水力压裂裂缝定向扩展机理研究”(编号:51404288);中国石
油大学(华东)研究生创新工程资助项目(编号:YCX2014010)
作者简介:曹彦超(1990-),男,硕士,主要从事油井压裂酸化增产增注技术研究。E-mal:cyc901019@163.com