Affect of fracture characteristics on DNAPL-water flow in rock fractures
This study investigates the influence of fracture properties on Dense Non-Aqueous Phase Liquids (DNAPL)-water flow in rock fractures. The aperture distributions of fractures in sandstone and shale specimens of Alberta Paskapoo Formation were obtained from the X-ray computed tomography (CT) technique. Then, the geostatistical parameters of each aperture distribution were estimated, and isotropy or anisotropy nature of the aperture distributions was identified. Equiprobable aperture distributions were generated from stochastic simulation to observe the affect of anisotropy of aperture distribution on DNAPL migration parameters. One set of fractures was generated using geostatistical properties similar to that of measured aperture distribution and the other set was generated by interchanging the highest and the lowest spatial correlation directions of the measured aperture distribution. DNAPL-water flow process was simulated in each generated fracture by utilizing the invasion percolation approach. The affects of anisotropy of aperture distribution on the main flow parameter, the capillary pressure–saturation relationship, was determined from the result of the simulated flow process.
W.M.S.B.Weerakone R.C.K.Wong
University of Calgary, Schulich School of Engineering, Calgary, Alberta, Canada
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）