Hydraulic fracturing, a method used to stimulate oil and gas from shale and tight formations, faces challenges like fluid blockage and fast declining oil or gas production rates due to the significant impact of capillary forces on water retention. To address this, surfactants and microemulsions are commonly employed as flowback additives to reduce surface and interfacial tension, enhancing water recovery during hydraulic fracturing. The effectiveness of flowback additives is highly impacted by harsh subsurface conditions, such as high salinity and high temperature. This study aims to assess the performance and effectiveness of methylimidazolium chloride-based ionic liquids as flowback additives at high salinities and temperatures.

中文翻译：

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通过创新的环保返排添加剂优化非常规和致密气藏压裂液的采收率


水力压裂是一种从页岩和致密地层中开采石油和天然气的方法，由于毛细管力对保水性的显着影响，面临着流体堵塞和石油或天然气产量快速下降等挑战。为了解决这个问题，表面活性剂和微乳液通常用作返排添加剂，以降低表面和界面张力，从而提高水力压裂期间的水采收率。返排添加剂的有效性很大程度上受到恶劣的地下条件的影响，例如高盐度和高温。本研究旨在评估甲基咪唑氯化物基离子液体作为返排添加剂在高盐度和温度下的性能和有效性。