水平井射孔簇内支撑剂分布数值模拟  

Numerical simulation of proppant distribution in horizontal well perforation clusters

作　　者：王春生[1] 孙铭成 武君 田明磊 WANG Chunsheng;SUN Mingcheng;WU Jun;TIAN Minglei(Key Laboratory of Enhanced Oil and Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing 163000,China;Daqing Oilfield Engineering Co.Ltd.,Daqing 163000,China;Oil and Gas Pipeline Engineering Co.Ltd.,Langfang 065000,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163000 [2]大庆油田工程有限责任公司,黑龙江大庆163000 [3]石油天然气管道工程有限公司,河北廊坊065000

出　　处：《化工科技》2024年第5期11-18,共8页Science & Technology in Chemical Industry

基　　金：国家自然科学基金项目(52074090);黑龙江省自然科学基金项目(LH2019E017);黑龙江省重点研发计划项目(JD22A004)。

摘　　要：为研究水平井射孔簇内支撑剂的运移规律,建立了水平井筒几何模型,并采用欧拉双流体模型分析了不同注入流量、压裂液黏度和注入φ(砂粒)对支撑剂运移规律的影响。结果表明,在水平井筒中,支撑剂的分布向趾部偏移。增加注入流速能促进颗粒的分散,但会降低射孔内的均匀性;提高压裂液黏度能减缓颗粒沉降,有助于支撑剂的均匀分布;增加注入φ(砂粒)会增加井筒堵塞风险,因此选择注入φ(砂粒)<10%。此外,雷诺数与归一化标准差呈自然对数关系,较高的雷诺数有助于提高颗粒在射孔流出的均匀性。In order to study proppant migration in perforating clusters of horizontal wells,a horizontal wellbore geometry model was established,and the effects of injection flow,fracturing fluid viscosity and injectionφ(sand)on proppant migration were analyzed by using Euler two-fluid model.The results show that,in horizontal wellbore,proppant distribution between perforations is shifted to toe,increasing injection flow rate will promote particle dispersion but reduce perforation uniformity,increasing viscosity can slow particle settlement and facilitate uniform proppant distribution,increasingφ(sand volume fraction)will increase the risk of wellbore blockage,and it is recommended to control injected sand volume fraction within 10%.There is a natural logarithmic relationship between Reynolds number and normalized standard deviation,and a high Reynolds number helps to promote the uniformity of particle flow through perforation.

关 键 词：水平井筒 水力压裂 欧拉模型 支撑剂运移 射孔簇 

分 类 号：TH134[机械工程—机械制造及自动化]