两亲聚合物驱油剂在海上稠油油田的适应性评价  

Adaptability evaluation of amphiphilic polymer flooding agent in offshore heavy oil field

作　　者：郑金定 李华朋 杨冠美 敖文君 黎慧 ZHENG Jinding;LI Huapeng;YANG Guanmei;AO Wenjun;LI Hui(Tianjin Branch of CNOOC(China)Co.,Ltd.,Tianjin 300459,China;Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《精细石油化工进展》2023年第2期7-10,共4页Advances in Fine Petrochemicals

摘　　要：针对海上平台空间小、稠油油田难以高效开发的问题,优选了3种两亲聚合物驱油剂,从两亲聚合物的黏浓性能、抗剪切性能、吸附性能、界面活性及其对稠油的降黏性能等方面开展了针对海上稠油的适应性研究。结果表明:两亲聚合物对于海上的稠油油藏具有较好的适应性,其剪切黏度保留率均超过了95%,表现出了良好的抗剪切性能;在120 min内,目标油田的油水界面张力均可以降到5 mN/m以下;BH-1与BH-3两亲聚合物的吸附量均在500 mg/g以下;添加等量的两亲聚合物溶液后,目标油田的稠油黏度得到了大幅度的降低,原油黏度从631.37降至80 mPa·s以下,降黏率均超过了85%,表现出良好的降黏效果。To address the issues of small offshore platform space and difficulty in efficient development of heavy oil fields,three amphiphilic polymer oil displacement agents were selected,and the adaptability of amphiphilic polymer to offshore heavy oil was studied from the aspects of viscosity concentration performance,shear resistance performance,adsorption performance,interfacial activity and viscosity reduction performance of heavy oil.Results showed that amphiphilic polymer had good adaptability to offshore heavy oil reservoirs,and its shear viscosity retention rate exceeded 98%,showing good shear resistance.Within 120 min,the oilwater interfacial tension of the target oil field could be reduced to less than 5 mN/m.The adsorption capacity of BH-1 and BH-3 amphiphilic polymers was less than 500 mg/g.After adding the same amount of amphiphilic polymer solution,the viscosity of the heavy oil in the target oil field was greatly reduced.The viscosity of the crude oil was reduced from 631.37 mPa·s to below 80 mPa·s,and the viscosity reduction rate was more than 85%,showing a good viscosity reduction effect.

关 键 词：两亲聚合物 稠油油藏 降黏性能 抗剪切性能 

分 类 号：TE53[石油与天然气工程—油气田开发工程]