摘要
为了研究裂缝内支撑剂的运移特性,应用计算流体力学-离散元(CFD-DEM)耦合模拟技术来模拟复杂裂缝中的支撑剂运移情况。通过控制单一变量法,研究了流速、支撑剂体积分数及压裂液黏度3个参数对于支撑剂运移的影响。结果表明:适当提高支撑剂体积分数有助于提高其携液能力进而提高压裂效果;较高的注入速度会使支撑剂在入口较远处沉降,因此适当提高注入速度会促进裂缝的扩展和延伸;较高的黏度会使支撑剂在出口流出,选取适当的黏度有利于提高油气的渗透性和采收率。
In order to investigate the transport characteristics of proppants in fractures,the computational fluid dynamics-discrete element method(CFD-DEM)coupled simulation technique was applied to simulate the transport of proppants in complex fractures.By controlling By controlling the univariate method,the effect of three parameters,namely flow velocity,proppant concentration,and fracturing fluid viscosity,on proppant transport were studied.The results showed that,properly increasing the proppant volume fraction helped to improve its carrying capacity and thereby enhance the fracturing effect;higher injection speeds caused the proppant to settle further away from the inlet,so properly increasing the injection speed could promote the expansion and extension of the fracture;higher viscosity caused the proppant to flow out of the outlet,and selecting the appropriate viscosity was beneficial to improve the permeability and recovery rate of oil and gas.
作者
刘承婷
隗鸿飞
姜福聪
王璐娜
李飞飞
LIU Chengting;WEI Hongfei;JIANG Fucong;WANG Luna;LI Feifei(School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Key Laboratory of Enhanced Oil and Gas Recovery,Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Geological Research Institute of Daqing Oilfield No.7 Oil Extraction Plant,Daqing Heilongjiang 163517,China)
出处
《当代化工》
CAS
2024年第8期1896-1899,1904,共5页
Contemporary Chemical Industry
基金
黑龙江省重点研发计划项目(项目编号:GA23A914)。
关键词
体积压裂
运移特性
计算流体力学
粒子
携砂流动
数值模拟
Hydraulic fracturing
Transport characteristics
Fluid mechanics
Particle
Proppant transportation
Numerical simulation
