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针对目前有机硼交联剂导致的破胶剂用量大,破胶后残渣含量高,破胶液黏度高,不利于压裂液的破胶返排等现状,从提高无机硼交联剂耐温性能方面着手,开发出能耐高温的无机硼交联剂JLW-1以及与之配伍性良好的粘土稳定剂COP-2和抗温剂TA-2等添加剂,最后形成无机硼高温延时压裂液体系,用于低压低渗透气藏的储层改造。通过实验室性能评价以及现场应用可以说明,该压裂液体系破胶后残渣含量少,破胶液黏度低,有利于压裂液的破胶返排,对储层伤害小,而且具有很好的流变性、破胶性,可满足不同规模的压裂施工要求。
In view of the current organic boron crosslinker led to a large amount of broken gel, breaking the residue after the high content of broken gel viscosity is high, is not conducive to fracturing fluid broken plastic back row and other current situation, from improving the inorganic boron crosslinking agent temperature Performance, to develop high temperature resistant inorganic boron crosslinking agent JLW-1 and its compatibility with a good clay stabilizer COP-2 and TA-2 and other additives temperature agent, and finally the formation of inorganic boron high temperature delayed fracturing fluid Department, for low pressure and low permeability gas reservoir reservoir transformation. Through the laboratory performance evaluation and field application, it can be shown that the fracturing fluid system has low residual content after breaking gel, low breaking viscosity, which is good for fracturing fluid breakage and gel recovery and is less harmful to reservoirs and has good performance The rheology, gel-breaking, to meet the requirements of different sizes of fracturing.