海上油田稠油开采井筒举升用水溶性降黏剂  

Water‑soluble viscosity reducer for wellbore lifting of heavy oil production in offshore oilfield

作　　者：徐方雪 刘志龙 孙君 孙艳萍 侯岳 周文超 林辉 付云川 XU Fangxue;LIU Zhilong;SUN Jun;SUN Yanping;HOU Yue;ZHOU Wenchao;LIN Hui;FU Yunchuan(Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中国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1期10-13,共4页Advances in Fine Petrochemicals

基　　金：中海油能源发展股份有限公司科技重大专项课题“稠油热采开发辅助增效药剂研发与应用”(HFKJZX-GJ-2022-03-04)。

摘　　要：海上油田稠油储量丰富,开采价值巨大,但由于稠油基础黏度高和反相乳化的原因,导致在井筒举升阶段出现电泵负荷巨大、举升困难等问题。使用非离子、阳离子、两性离子表面活性剂以及助剂制备HY系列水性降黏剂,结果表明,HY-1体系降黏率99.20%,50℃下30 min自然脱水率84.40%,120℃下24 h高温老化后降黏率为96.98%,伴注管流实验降压幅度达57.9%。可见,自主体系HY-1乳化降黏性能优异,能够满足海上油田井筒举升用水溶性降黏剂的室内评价要求。Offshore oil fields are rich in heavy oil reserves and have great exploitation value.However,due to the high viscosity of heavy oil and inverse emulsification,problems such as huge electric pump load and lifting difficulty occur in the wellbore lifting stage.In this paper,HY series water-soluble viscosity reduction systems were independently developed by using non-ionic,cationic,zwitterionic surfactants and additives.Results showed that the viscosity reduction rate of HY-1 system was 99.20%,the natural dehydration rate in 30 min at 50℃was 84.40%,the viscosity reduction rate after 24 h high-temperature aging at 120℃was 96.98%,and the pressure reduction range in the injection pipe flow experiment was 57.9%.The independent system HY-1 has excellent emulsification and viscosity reduction performance.

关 键 词：海上稠油油田 水性降黏剂 表面活性剂 井筒举升 

分 类 号：TE53[石油与天然气工程—油气田开发工程]