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Study on Proppant-Suspending Ability of Clean Fracturing Fluid

机译：清洁压裂液的支撑剂悬浮能力研究

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In the past,in the design of fracturing schemes,the influence of different factors on proppant-suspending ability of fracturing fluid was not considered comprehensively,resulting in incomplete matching between fracturing fluid and the requirements of proppant-suspending ability and incomplete fracturing schemes.In this paper,the effects of viscosities of clean fracturing fluid,proppant size and sand-liquid ratio on proppant-suspending ability at different temperatures were studied by physical simulation experiments in laboratory.The results show that the influence factors of proppant-suspending ability of fracturing fluid were listed in an effective order as below:viscosity of fracturing fluid,proppant size and sand-liquid ratio.The higher the viscosity of fracturing fluid is,the slower the settling rate of proppant is,and the stronger the proppant-suspending ability is.The larger the proppant size is,the faster the settling rate is,and the worse the proppant-suspending ability is.The time required for the settling to reach a stable state at different sand-liquid ratio is almost the same,which show that the proppant-suspending ability is almost the same.The higher the temperature is,the lower the viscosity of fracturing fluid is,the faster the settling rate is,and the worse the proppant-suspending ability is.Considering proppant-carrying ability,formation damage,economic cost and other factors,there is an optimum matching relationship between fracturing fluid viscosity and proppant particle size.Large size proppants need to suspend with high viscosity fracturing fluid,medium size proppants need to suspend with medium viscosity and above fracturing fluid,and small size proppants need to suspend with low viscosity and above fracturing fluid.The research results provide a basis for the optimization of fracturing schemes.
机译：在过去，在裂缝方案的设计中，不同因素对压裂液支撑剂悬浮能力的影响不受综合考虑，导致压裂液与支撑剂悬浮能力和不完全压裂方案的要求不完全匹配。本文研究了清洁压裂液，支撑剂大小和砂液比对不同温度的支撑剂悬浮能力的粘度的影响是通过实验室的物理模拟实验研究了不同温度的悬浮能力。结果表明，支撑压裂悬浮能力的影响因素液体以有效的顺序列出：压裂液，支撑剂尺寸和砂液比的粘度。压裂液的粘度越高，支撑剂的稳定率越慢，悬浮能力越强。支撑剂尺寸越大，稳定率越快，暂停能力越差。沉降所需的时间以不同的砂液比达到稳定状态几乎是相同的，这表明支撑剂悬浮能力几乎相同。温度越高，压裂液的粘度越低，更快的稳定率是，暂停能力更差。携带支撑剂的能力，形成损害，经济成本和其他因素，压裂液粘度和支撑剂粒度之间存在最佳的匹配关系。规模的支撑剂需要为了悬浮高粘度压裂液，中等尺寸的支撑剂需要悬浮中粘度和高于压裂液，并且小尺寸的支撑剂需要悬浮低粘度和高于压裂液。研究结果为裂缝方案提供了依据。

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