压裂液返排的数值模型优化
Value Engineering(2015)
Abstract
压裂液返排对压裂施工的效果影响重大,目前我国在压裂液返排的建模方面主要是针对常规砂岩储层,由于模型的复杂程度被简化,计算结果易出现误差而偏离实际。本文根据流体的质量守恒定律和裂缝形态变化规律对压裂液返排数值模型进行优化,并利用体积平衡原理求解该模型,通过压力变化对裂缝闭合时间给出定量判断,为后续放喷油嘴时的尺寸选择提供理论依据。
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Key words
the filter model,fracturing fluid flowback model,fracture model,the principle of volume balance
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