纳米三元复合聚合物驱油剂驱油效果评价  

Oil displacement effect of nano ternary polymer flooding agent

作　　者：曹孟菁[1] 郭光范 闫方平[1] 陈颖超[1] 张玉平[1] 杨火海[2] Cao Mengjing;Guo Guangfan;Yan Fangping;Chen Yingchao;Zhang Yuping;Yang Huohai(Department of Petroleum Engineering,Chengde Petroleum College,Chengde Hebei 067000,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Sichuan Chengdu 610500,China)

机构地区：[1]承德石油高等专科学校石油工程系,河北承德067000 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《石油化工》2021年第1期55-60,共6页Petrochemical Technology

基　　金：河北省高等学校科学技术研究项目(ZD2018238);国家自然科学基金项目(51904252)。

摘　　要：以丙烯酰胺、2-丙烯酰胺基-2-甲基丙磺酸和N,N'-亚甲基双丙烯酰胺为单体,采用蒸馏沉淀法合成了一种纳米聚合物微球,利用SEM,FTIR等方法对结构进行了表征,同时研究了聚合物微球的抗温抗盐性、渗流规律、渗流特征及驱油影响因素等。实验结果表明,合成的纳米聚合物微球具有良好的吸水膨胀性能、抗盐性和抗温性。聚合物微球分散体系在渗透率为8.85×10^-3~29.87×10^-3μm^2的岩心中流动时,表现出非达西渗流特征,其膨胀体系在岩心上可起到封堵效果。聚合物微球颗粒膨胀后的分散体系使水相相对渗透率下降。温度和注入颗粒段塞尺寸对聚合物微球的提高采收率均有影响。A polymer microsphere was synthesized with acrylamide,2-acrylamide-2-methyl propane sulfonic acid and N,N'-methylene double acrylamide as monomer by distillation precipitation.The structure was characterized by SEM and FTIR.The temperature resistance,salt resistance,rule of seepage flow,water/oil two-phase seepage characteristics and influencing factors of oil displacement were studied.The experimental result shows that the polymer microspheres have good properties of water absorption,salt resistance and temperature resistance.When the polymer microsphere dispersion system flows in the core with a permeability of 8.85×10^-3-29.87×10^-3μm^2,it shows non-Darcy seepage characteristics,and its expansion system can play a blocking effect on the core.The dispersion of polymer microspheres after expansion reduces the relative permeability of water phase.The temperature and the size of injected particle slug affect the enhanced oil recovery of polymer microspheres.

关 键 词：三元复合 纳微聚合物颗粒 驱油剂 提高采收率 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]