海上裂缝性油藏化学堵水体系优化研究  

Study on Optimization of Chemical Water Plugging System for Offshore Fractured Reservoirs

作　　者：王欣然 王艳霞 孟智强 魏舒 张海波 WANG Xinran;WANG Yanxia;MENG Zhiqiang;WEI Shu;ZHANG Haibo(Tianjin Branch of CNOOC(China),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：《重庆科技学院学报（自然科学版）》2023年第5期8-13,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058001)。

摘　　要：为了实现对裂缝性油藏水窜通道的有效封堵,以渤海A油田开发为例开展化学堵水体系优化实验研究。研究表明:聚合物SD-3、TP-1完全溶解所需时间较短,能够迅速达到黏度高峰值,其间抗剪切性逐渐增强;交联剂JT-1与聚合物构成的凝胶体系成胶时间更长、成胶强度更高。通过驱替实验优选出的凝胶体系注入性良好,封堵率高,降水增油试验效果显著。In order to achieve effective plugging of water channeling in fractured reservoirs,an experimental study on optimization of chemical water plugging system was conducted with the development of Bohai A oilfield as an example.The experimental results show that it takes short time for polymer SD-3 and TP-1 to completely dissolve and they can quickly reach the viscosity peak,during which their shear resistance gradually increases.The gel system composed of crosslinking agent JT-1 and polymer has longer gel forming time and higher gel forming strength.The gel system composed of cross-linker agent JT-1 and polymer has longer adhesive time and higher adhesive strength.The gel system selected by displacement experiment has good injectivity and high plugging rate,and the effect of precipitation and oil increase in field test is remarkable.

关 键 词：裂缝性油藏 化学堵水体系 聚合物 交联剂 体系优化 

分 类 号：TE375[石油与天然气工程—油气田开发工程]