摘要
为解决聚丙烯酰胺在水中易水解、在地层中吸附性大、剪切稳定性和热稳定性较差等难题 ,在聚丙烯酰胺聚合物中引入辅助剂环氧树脂 ,显著增加了其剪切稳定性和热稳定性 ,减少了其吸附量 ,增大了堵塞孔喉的聚合物量 ;筛选出的高交联性的交联剂交联出的高强度立体型网状聚合物解决了聚丙烯酰胺体系的稳定应用难题 ;针对八面河油田试验区具体地质和油藏情况 ,优化选择出粉煤灰作为交联介质。现场应用表明 ,成胶的聚合物—粉煤灰复合体系对于大孔道、高渗透率裂缝性油层的调剖应用效果突出。该研究为同类油藏的开发提供了经验。
Polyacrylamide has easy hydration in water, large scale of adsorption in formation, and poor shearing stability and thermal stability, etc., and to solve these problems, the assisting agent eposide resin is added into polyacrylamide, which improves the shearing and thermal stability dramatically and reduces its adsorption, while increases the polymer volume for throat plugging. The crosslinking agent screen out with high crosslinking capability forms solid network polymer of high strength, which solves the problem of stable application of polyacrylamide system. Fly ash was optimized as the crosslinking medium in accordance with the geological and reservoir conditions of Bamianhe Oilfield, and field using showed that the gelled polymer-fly ash system is especially suitable for profile controlling in fractured reservoirs with large pores and throats and of high permeability.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2004年第6期74-77,共4页
Oil Drilling & Production Technology
基金
国家科技部国际科技合作重点项目 :项目名称"油田开发中后期精细油藏描述与提高采收率技术研究"
编号 2 0 0 2cb713 90 6
