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A mathematical analysis of the mechanism of ultrasonic induced fluid percolation in porous media: Part I

Najafi, I ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. This work concerns with experimentally and analytically investigation of free gravity drainage process in porous media under the influence of ultrasonic wave radiation. Glass beads ranges from 70 to 100 mesh sizes were packed and used in the tests. The working fluids consist of distilled water, kerosene and Doroud and Paidar crude oils as wetting and air as non-wetting phase. The measured oil recovery data along with Hagoort (1984) backward methodology were used to determine and to compare the relative permeability of wetting phases in presence and absence of ultrasonic radiation. In addition the relative permeability of non-wetting phases for both cases were calculated from inverse modeling of provided data. The results showed that wave enhanced the relative permeability of phases, except than for the case of Paidar crude oil, which is asphaltenic and the oil recovery decreased by sonication. The momentum conservation equation, as well as Darcy's and Stokes' laws were combined and a new model for predicting absolute permeability of porous media radiated by ultrasonic waves is developed. The surprising result of developed model is that the permeability of porous medium is independent to the wave parameters. Investigating the influence of ultrasonic wave radiation on viscosity of the fluids and capillary pressure, showed that the radiation acts in opposition to capillary pressure effect, meaning while there is a period of radiation time at which the oil viscosity is decreasing, and after which it is increasing. Finally, the obtained flow parametrers under the influence of wave radiation applied in conventional model of gravity drainage. Well mached observed between predictions of model modified by this method and measured recovery data confirmed the applicability of flow parameters modification method for predicting the gravity drainage behavior under the influence of ultrasonic wave
  5. Keywords:
  6. Absolute permeability ; Capillary pressure effects ; Capillary pressures ; Conventional models ; Developed model ; Distilled water ; Flow parameters ; Glass bead ; Gravity drainage ; Hagoort's backward methodology ; Inverse modeling ; Mathematical analysis ; Mesh size ; Modification methods ; Momentum conservation equations ; New model ; Non-wetting ; Non-wetting phasis ; Oil recoveries ; Oil viscosity ; Porous Media ; Porous medium ; Relative permeability ; Stokes' law ; Ultrasonic radiation ; Wave parameters ; Wave radiation ; Wetting phasis ; Working fluid ; Air ; Capillarity ; Capillary tubes ; Crude oil ; Enhanced recovery ; Inverse problems ; Petroleum engineering ; Porous materials ; Pressure effects ; Radiation ; Recovery ; Solvents ; Ultrasonic waves ; Viscosity ; Wetting ; Ultrasonics
  7. Source: Proceedings - SPE Annual Technical Conference and Exhibition, 20 September 2010 through 22 September 2010 ; Volume 7 , September , 2010 , Pages 5833-5856 ; 9781617389641 (ISBN)
  8. URL: https://www.onepetro.org/conference-paper/SPE-141126-STU