水溶性减阻剂在页岩气滑溜水压裂中的应用进展

Recent Advances in Water-Soluble Friction Reducers for Slickwater Hydraulic Fracturing Used in Completion of Shale Gas

滑溜水压裂是致密页岩气开采主要采用的增产手段,水溶性减阻剂是滑溜水压裂液中用于降低流体在管道输送过程中所受阻力的化学试剂。介绍了减阻剂的减阻机理,综述了水溶性减阻剂在页岩气滑溜水压裂领域应用的研究进展,包括生物基多糖减阻剂、聚氧化乙烯减阻剂和聚丙烯酰胺类减阻剂在页岩气压裂领域应用的研究现状。对水溶性减阻剂的应用前景进行了展望,减阻性能好、对储层伤害低、环境友好和成本较低廉的减阻剂是未来研究的重点。

Slickwater hydraulic fracturing is widely used to improve the efficiency of shale gas exploitation in North America and it also has a broad application prospect in China. The friction reducers are water-soluble polymeric additives which are added to slickwater to reduce friction loss during pumping. In this paper,the mechanism of water-soluble polymeric drag reduction was summed up,and recent progresses in the research of friction reducers,including polysaccharides friction reducers,poly（ethylene oxide） friction reducers and polyacrylamide friction reducer,used in the completion of shale gas were reviewed. The environmentally friendly friction reducers with high drag reduce ability,low damage to shale reservoir and low cost would be the development direction in future.