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随着超低密度支撑剂用量的增加,遇到了几个施工操作上的问题。由于超低密度支撑剂和基液密度差异很小,常规测量系统不适用,支撑剂的混合和计量遇到了困难。由于滑溜水压裂时超低密度支撑剂浓度较低,操作更加复杂;通常支撑剂的起始浓度为60kg/m3。用一种可用泵抽汲的输送流体悬浮超低密度支撑剂来解决这个问题。高浓度的支撑剂混合液可在基地配制,然后运送到施工现场,用清水或线性胶稀释后泵送,或者像泡沫一样泵送。本文详述了新一代超低密度支撑剂的开发、现场试验以及成功应用,把这种新颖的输送想法应用到了常规压裂作业中,使得压裂作业利用最少的设备和人力,能在很小和(或)很偏僻的地方进行。运用该技术在设备利用非常紧张和另外需要压裂船的地区能进行更多次的压裂作业。
As the amount of ultra-low density proppant increases, several operational problems have been encountered. Due to the small differences in ultra-low density proppants and base fluid densities, conventional measurement systems were not suitable and proppant mixing and metering encountered difficulties. The operation is more complicated due to the lower concentration of ultra-low density proppant at the time of hydrofracturing; usually the initial concentration of proppant is 60 kg / m3. Solve this problem with a pumped pump fluid that suspends ultra low density proppants. Highly concentrated proppant mixes can be prepared at the base, then shipped to the job site, diluted with water or a linear gel, pumped, or pumped as foam. This paper details the development, field testing and successful application of a new generation of ultra-low density proppants, applying this novel transport concept to conventional fracturing operations that allow for the use of minimal equipment and manpower in fracturing operations, And (or) very remote place. This technology allows for more fracturing operations in areas where the equipment is very stressful and requires additional fracturing vessels.