Investigation of Oleate-Diethylamine-Epichlorohydrin Copolymer as a Clay Swelling Inhibitor for Shale Oil/Gas Exploration

被引:12
作者
Wang, Yan-Long [1 ,2 ]
Yan, Qi-Bin [1 ]
Guo, Zhen [2 ]
Guo, Gang [3 ]
Deng, Qiang [2 ]
Zhang, Jie [2 ]
Chen, Gang [2 ,4 ]
机构
[1] Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Sichuan, Peoples R China
[2] Xian Shiyou Univ, Coll Chem & Chem Engn, Xian 710065, Shaanxi, Peoples R China
[3] Changqing Oilfield Co, Res Inst Oil & Gas Technol, Xian 710025, Shaanxi, Peoples R China
[4] CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 102206, Peoples R China
基金
美国国家科学基金会;
关键词
graft copolyammonium; shale; swelling; particle size; inhibition;
D O I
10.1134/S0965544118030167
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Oleate graft copolyammonium (OGCA) was prepared and its performance as a shale inhibitor was evaluated by bentonite linear expansion test, anti-swelling experiments, mud ball experiments in water-based drilling fluid. Anti-swelling results shows that anti-swelling rate of OGCA reaches up to 89.7% and OGCA has strong inhibitive capability to bentonite hydration swelling confirmed by the result of mud ball experiment. From the results it was found that both OGCA and modified starch have an excellent synergetic defiltration effect on the water-based drilling fluid. The good performance of OGCA as a shale inhibitor should be contributed to its good capacity of controlling the particle size of bentonite. The inhibition mechanism of the polyamine salt was analyzed by thermogravimetric analysis and scanning electron microscope.
引用
收藏
页码:245 / 249
页数:5
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