Influence of a simple fracture intersection on density-driven immiscible flow: Wetting vs. nonwetting flows
نویسندگان
چکیده
[1] The influence of a single fracture intersection on density-driven immiscible flow is compared between wetting (water into air) and nonwetting (Trichloroethylene into water) flows. At low supply rates, the intersection acted as a hysteretic gate to pulsed flow of the wetting phase, but had minimal influence on nonwetting phase flow. For both cases, increasing the supply rate led to the formation of continuous fluid tendrils that crossed the intersection without interruption. The wetting experiment returned to pulsed flow as the supply rate was decreased, while the nonwetting experiment maintained a continuous flow structure. Results suggest a fundamental difference between wetting and nonwetting phase flows in fracture networks.
منابع مشابه
Control-volume method for numerical simulation of two-phase immiscible flow in two- and three-dimensional discrete-fractured media
[1] We provide a numerical procedure for the simulation of two-phase immiscible and incompressible flow in twoand three-dimensional discrete-fractured media. The concept of cross-flow equilibrium is used to reduce the fracture dimension from n to (n-1) in the calculation of flow in the fractures. This concept, which is often referred to as the discrete-fracture model, has a significant effect o...
متن کاملShan-and-Chen-type multiphase lattice Boltzmann study of viscous coupling effects for two-phase flow in porous media
In this paper, the Shan–Chen-type (SC) multiphase lattice Boltzmann model was used to study the viscous coupling effects for immiscible two-phase flow in porous media. In the model, any typical equation of state can be incorporated and different contact angles of the gas–liquid interface at a solid wall can be obtained easily through adjusting the ‘density of wall’ (Benzi et al., Phys. Rev. E 2...
متن کاملAn Estimation of Wave Attenuation Factor in Ultrasonic Assisted Gravity Drainage Process
It has been proved that ultrasonic energy can considerably increase the amount of oil recovery in an immiscible displacement process. Although many studies have been performed on investigating the roles of ultrasonic waves, based on the best of our knowledge, little attention has been paid to evaluate wave attenuation parameter, which is an important parameter in the determination of the energy...
متن کاملPore-scale Simulation of High-density-ratio Multiphase Flows in Porous Media Using Lattice Boltzmann Method
A lattice Boltzmann high-density-ratio model, which uses diffuse interface theory to describe the interfacial dynamics and was proposed originally by Lee and Liu [T. Lee, L. Liu, Lattice Boltzmann simulations of micron-scale drop impact on dry surfaces, J. Comput. Phys. 229(2010) 8045-8063], is extended to simulate multiphase flows in porous media. A wetting boundary treatment is proposed for t...
متن کاملVisualizing Multiphase Flow and Trapped Fluid Configurations in a Model Three-Dimensional Porous Medium
We report an approach to fully visualize the flow of two immiscible fluids through a model three-dimensional (3-D) porous medium at pore-scale resolution. Using confocal microscopy, we directly image the drainage of the medium by the nonwetting oil and subsequent imbibition by the wetting fluid. During imbibition, the wetting fluid pinches off threads of oil in the narrow crevices of the medium...
متن کامل