水力压裂中支撑剂输送的数值模拟研究  

Numerical Simulation Research of Proppant Transportation in Hydraulic Fracturing

作　　者：王松[1] 杨兆中[1] 卢华[2] 李小刚[1] 

机构地区：[1]西南石油大学研究生部,四川成都610500 [2]西南油气田分公司川中油气矿,四川遂宁629000

出　　处：《石油天然气学报》2009年第5期380-383,共4页Journal of Oil and Gas Technology

摘　　要：通过研究支撑剂在受力平衡时的沉降运动,综合分析固-液两相流中颗粒受力情况及其非平衡状态下的运动机理,推导出支撑剂在压裂液中的沉降公式,在此基础上建立了裂缝内支撑剂输送的数学模型。该模型在已知裂缝几何尺寸的情况下,考虑了颗粒的二维流动以及剪切作用对液体粘度的影响下,应用有限差分方法模拟了水力压裂过程中支撑剂的输送过程;并采用预测-校正方法对模型求解,能提高计算的速度及精度,使得数值模拟的结果与输送过程中的实际情况更加接近。On the basis of research on proppant settling equation in stationary fluids,a proppant settling equation was derived by comprehensive analysis the motion mechanism of the particle stress conditions in solid-liquid flow and non-equilibrium condition,also a mathematical model of proppant transport was based on it.The finite difference method was used to simulate the proppant transporting process in fracturing,and two-dimensional flow of proppant was considered.By using the predicting-correcting method ,the speed and precision during the solving process are improved,the result of numerical simulate and the actual situation are more closer.

关 键 词：水力压裂 固液两相流 支撑剂输送 数值模拟 预测-校正法 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]