硬葡聚糖化学封堵胶塞的制备及性能评价  

Preparation and Performance Evaluation of Chemical Wellbore Plug Based on Scleroglucan

作　　者：李亮[1] 温鑫 郭娜[1] 殷鸿尧 伍亚军[1] 冯玉军[2] LI Liang;WEN Xin;GUO Na;YIN Hongyao;WU Yajun;FENG Yujun(Research Institute of Petroleum Engineering,Northwest Oilfield Company,Sinopec,Urumqi,Xinjiang 830011,P R of China;Polymer Research Institute,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu,Sichuan 610065,P R of China)

机构地区：[1]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830011 [2]四川大学高分子研究所,高分子材料工程国家重点实验室,四川成都610065

出　　处：《油田化学》2020年第2期234-238,共5页Oilfield Chemistry

基　　金：“十三五”国家科技重大专项“缝洞型油藏堵调及靶向酸压工艺技术”(项目编号2016ZX05014-005)。

摘　　要：为提高基于生物聚合物的化学封堵胶塞的抗温抗盐性能,在饱和NaCl溶液中用酚醛树脂交联剂SG-3与硬葡聚糖反应制得化学封堵胶塞。研究了交联温度、时间、交联剂浓度和硬葡聚糖浓度对胶塞力学性能的影响,分析了影响机理,考察了胶塞在饱和NaCl溶液和120℃环境下的抗老化性能。研究结果表明,反应温度和硬葡聚糖浓度对胶塞性能的影响较大。胶塞的力学性能随硬葡聚糖浓度的增加而增强。在80℃下,3%的硬葡聚糖和1%的交联剂反应制得的化学封堵胶塞既具有较好的力学强度又具有较好的韧性。该化学封堵胶塞在120℃的饱和NaCl溶液中老化40 h不发生形变,而在72 h后则几乎完全降解。由硬葡聚糖和酚醛树脂交联剂制备的化学封堵胶塞具有良好的耐盐抗温性,并能在模拟地层水环境下逐渐降解,可用于油田固井、完井和修井等作业。图15表3参17。In order to improve the heat resistance and salt tolerance of chemical wellbore plug based on biopolymer,plug that was prepared from phenolic resin crosslinker SG-3 and scleroglucan in saturated NaCl solution was studied.The effects of crosslinking temperature,time,concentration of both crosslinker and scleroglucan on the mechanical properties of plug and influence mechanism were investigated,and its ageing resistance in saturated NaCl solution at 120℃was then examined.The results showed that the crosslinking temperature and scleroglucan concentration exerted great influence on plug’s performance.The mechanical performance of plug increased with the rising of scleroglucan concentration.Plug prepared from 3.0%scleroglucan and 1.0%crosslinker at 80°C showed both good toughness and mechanical property.And,its shape could keep stable for 40 h in saturated NaCl solution at 120°C.However,it nearly completely degraded after 72 h.Chemical wellbore plug prepared from scleroglucan and phenolic resin crosslinker displayed good heat resistance and salt tolerance.Moreover,it could gradually degrade in simulated formation water.Therefore,the plug might find applications in well cementation,completion and workover in oilfield.

关 键 词：生物聚合物 化学封堵胶塞 硬葡聚糖 酚醛树脂交联剂 

分 类 号：TE358[石油与天然气工程—油气田开发工程] TE39