分级防砂用海藻酸钠凝胶研发及性能评价  

Development and performance evaluation of sodium alginate gel for graded sand control

作　　者：陈增辉 彭立 段一凡 石端胜 崔庆振 CHEN Zeng-hui;PENG Li;DUAN Yi-fan;SHI Duan-sheng;CUI Qing-zhen(CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300452,China;CNOOC(China)Co.,Ltd.,Tianjin Branch,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海油田服务股份有限公司,天津300452

出　　处：《精细与专用化学品》2024年第6期31-34,共4页Fine and Specialty Chemicals

基　　金：中海油能源发展工程技术科技项目(GCJSXMHT-2218)。

摘　　要：针对因中远端游离态粉细砂等运移导致油井出砂的问题,研发了一种非树脂型防砂体系,并开展了防砂体系性能评价实验。结果表明,该体系耐温16~120℃,自聚能力≥90%,适用矿化度20×10^(4)mg/L,同时体系凝胶具有一定微孔孔径,渗透率保持率≥85%,对中粗粒径砂、粉细砂以及粘土等具备普适性,可以满足抑砂和固砂现场需求。A non-resin sand control system has been developed to address the problem of sand production in oil wells caused by the migration of free silty sand in the middle and lower reaches.Through performance tests of the sand control system,it was showed that the system has a temperature resistance of 16~120C,a self-polymerization capacity of≥90%,and was suitable for a salinity of 20 ×10^(4)mg/L,and the system gel has a certain micropore diameter,and the permeability retention rate was≥85%,which was universal for medium coarse sand,silty fine sand,clay,etc.,and can meet the needs of sand control and sand consolidation site.

关 键 词：分级防砂 抑砂剂 固砂剂 性能评价 

分 类 号：TE357[石油与天然气工程—油气田开发工程]