水下跨接管用纤维素基MEG凝胶的制备与性能  

Performance of MEG gel based on cellulose for subsea spool and jumper pipelines

作　　者：储乐平[1] 咸竣瀚 赵晓磊[1] 肖德明[1] 陈欣[1] 单晓亮[1] 杨利营[2,3] 印寿根[2,3] CHU Leping;XIAN Junhan;ZHAO Xiaolei;XIAO Deming;CHEN Xin;SHAN Xiaoliang;YANG Liying;YIN Shougen(China Offshore Oil Engineering Co.Ltd.,Tianjin 300451,China;Key Laboratory of Display Materials and Photoelectric Devices,Education Ministry of China,Tianjin University of Technology,Tianjin 300384,China;School of Materials Science and Engineering,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451 [2]天津理工大学显示材料与光电器件教育部重点实验室,天津300384 [3]天津理工大学材料科学与工程学院,天津300384

出　　处：《天津理工大学学报》2021年第3期60-64,共5页Journal of Tianjin University of Technology

基　　金：国家十三五重大专项57南海荔湾气田群和流花油田群开发示范工程(2016ZX05057)。

摘　　要：以纤维素为稠化剂,有机铝为交联剂,乙二醇(MEG)为防冻液,采用酸降解法制备了水下跨接管用纤维素基MEG凝胶并优选了凝胶的制备工艺。研究了MEG凝胶的表观形貌、流变性、稳定性、抗冻性、抗压性等性能。结果表明:当稠化剂为1 wt%,交联剂为4 wt%,MEG含量为40 wt%时凝胶性能最佳。该凝胶在模拟海水和MEG中可以稳定存在6天以上;在-20℃低温条件下冷冻24 h,凝胶不会冻结仍具有很好的弹性和挂壁效果;在12 MPa的压力下形变量为8.3%,可以承受较高的海底压力。Cellulose based MEG gel was prepared by using cellulose as thickener,organic aluminum as the crosslinking agent and ethylene glycol as antifreeze.The preparation conditions of the MEG gel were optimized,and its apparent morphology,rheological properties,stability,frost resistance and compressive properties were studied.The results showed that the optimized formula was obtained when the thickener was 1 wt%,the crosslinking agent was 4 wt%,and the MEG solution was 40 wt%;The MEG gel can be stable in seawater and ethylene glycol solution for more than 6 days.The MEG gel system will not freeze at-20℃for 24 h and has good elasticity and wall hanging effect;The deformation of the gel system is 8.3%at 12 MPa,which can withstand high subsea pressure.

关 键 词：凝胶 纤维素 乙二醇(MEG) 交联 黏度 跨接管 

分 类 号：O469[理学—凝聚态物理]