Due to the inability of conventional seawater based fracturing fluid systems to meet the requirements of high salinity seawater configuration and stable properties in high-temperature reservoirs,experiments are conducted on the selection of fracturing fluid additives and performance evaluation using East China Sea seawater as a sample.Four additives,FLICK-2 salt resistant thickener,high-temperature cross-linking agent,multifunctional composite synergist and gel breaker are selected to form a fracturing fluid system which withstands temperature up to 175℃and can be quickly mixed with seawater up to 60000 mg/L.The fracturing fluid system has good temperature resistance and shear resistance,and the viscosity of the system can still be maintained higher than 50 mPa·s at 175℃after 2 hours at a shear rate of 170 s-1.
关键词
耐盐型稠化剂/抗高温/快速混配/一体化压裂液/性能评价
Key words
salt-tolerant thickener/high temperature resistance/quick mixed/integrated fracturing fluid/performance evaluation
维普
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