
科学技术与工程

中国技术经济学会
颗粒在多孔介质内运移沉积特性研究进展
Review on Particle Transport and Deposition Properties in Porous Medium
颗粒调剖堵水是提高原油采收率的重要途径。了解颗粒在多孔介质中的运移沉积特性,便于颗粒制备的优化,提高颗粒与地层孔喉配伍性和封堵效率。综述了颗粒浓度值、粒径、多孔介质结构、粒径比、介质内流体参数等因素对运移沉积的影响,总结了简化几何、介观模拟、LB-DEM(lattice Boltzmann method-discrete element method)、CFD-DEM(computational fluid dynamics-discrete element method)等模拟方法研究结果。分析表明,粒径比的临界值影响多孔介质的沉积位置和堵塞程度,粒径不同、所受力差异较大,大颗粒受水动力、重力、流体流速影响显著。多孔介质内流体流动模型尚未完全统一,Brinkman-Forchheimer-Darcy模型适用性较强,CFD-DEM方法从微观角度对介质内运移沉积流固耦合进行了验证,为非均质储层的调剖方案提供了依据。
Particle profile control and blockage is recognized as an important method for enhancing oil recovery. The migration and deposition characteristics of particles in porous media are understood to facilitate the optimization of particle preparation, thereby improving compatibility with reservoir pore throats and blocking efficiency. Factors such as particle concentration, particle size, porous medium structure, particle size ratio, and fluid parameters within the medium were reviewed for their effects on migration and deposition. Research results from various simulation methods, including simplified geometry, mesoscopic simulation, lattice Boltzmann method-discrete element method (LB-DEM) and computational fluid dynamics-discrete element method(CFD-DEM) were summarized. It is indicated that the critical value of the particle size ratio influences the deposition location and blockage degree in porous media. Different particle sizes are subjected to significant differences in forces, with larger particles being notably affected by hydrodynamics, gravity, and fluid flow rates. The fluid flow model within porous media is not yet fully unified. However, the Brinkman-Forchheimer-Darcy model is noted for its strong applicability. The CFD-DEM method, approached from a microscopic perspective, has validated the flow-solid coupling of migration and deposition within the medium, providing a basis for profile control schemes in heterogeneous reservoirs.
transport and deposition / porous media / particle / particle size ratio / profile control and water shutoff
/
| 〈 |
|
〉 |