一种新型滑溜水压裂液降阻剂合成与应用研究

摘要

Friction reducer is a core additive of slickwater fracturing fluid. A new type friction reducer was synthesized by inverse emulsion polymerization, and a slickwater fracturing fluid was prepared with the new friction reducer. Various properties of friction reducer were investigated as well as damage of the slickwater fracturing fluid to core permeability and fracture conductivity. The experimental results show that, the friction reducer has good friction reduction performance and sand carrying capacity; the damage rate of core permeability and proppant conductivity is low, the damage recovery rate of proppant conductivity can reach to 95.8%; the slickwater fracturing fluid has characteristics of low friction and high elasticity.%减阻剂是滑溜水压裂液的核心添加剂，采用反相乳液聚合法合成了一种新型降阻剂，并以其为主剂，配制了一种滑溜水压裂液体系。考察了降阻剂的各项性能和滑溜水压裂液体系对岩心渗透伤害和裂缝导流能力伤害性能。试验结果表明：降阻剂具有较好降阻性能和携砂性能；该降阻剂配制的滑溜水压裂液对岩心渗透伤害率低、对支撑剂导流能力的伤害率低，对支撑剂导流能力的伤害恢复率达到95.8％；该降阻剂配制的滑溜水压裂液具有低摩阻和高弹性的特点，可以实施大液量、大排量、大砂量的施工。