摘要
滑溜水压裂技术以大排量、大液量的方式向地层泵注携砂液,最终可以在压裂储层中形成填充有支撑剂的有效人工裂缝。通过对支撑剂颗粒进行受力分析,建立其沉降的速度公式,并结合固液两相流的运动机理,建立了支撑剂输送的数学模型。基于现有装置,研究了不同进口位置组合对滑溜水压裂液携砂运移规律的影响,并利用Fluent软件的欧拉模型对铺砂形态进行数值模拟。结果表明:Ⅰ-Ⅱ型进口组合最有利于主缝进口端的铺砂,支撑剂铺置率高,且砂堤平衡高度前缘距离较小。实验与模拟结果的吻合度高,可为压裂施工提供理论帮助。
Slickwater fracturing technology pump carrying sand at high flow rate and large amount of fluid,eventually,it can form in the unconventional reservoir with a certain proppant filled fracturing fracture which is effective labor.Based on the force analysis of proppant particles,the velocity formula of its settlement is established, and combine with the kinematic mechanism of solid-liquid two-phase flow,finally,establishing the mathematical model of proppant transportation.Based on the existing equipment,the paper studies the influence of the sand transport law of slip water in different inlet position.The euler model of fluent software was used to simulate the sand-laying morphology.The result shows that type I-II inlet is the best for sand laying at the inlet end of the main fracturing fracture,whose proppant laying rate of the sand carrying is high and the height of sand embankment balance front distance is small. The experimental results are in good agreement with the numerical results, and can provide theoretical help for fracturing construction.
作者
符洋
FU Yang(College of Petroleum Engineering,Xi'an Shiyou University,Xi'an Shanxi 710065,China)
出处
《石油化工应用》
CAS
2019年第4期11-16,共6页
Petrochemical Industry Application
基金
国家自然科学基金资助项目
项目编号:51874242
国家科技重大专项资助项目
项目编号:2016ZX05050-009
