http://www.onepetro.org/mslib/app/Preview.do?paperNumber=00005528&societyCode=SPE Hill, S, “Channeling in Packed Columns”, Chemical Engineering Science, no. 6 - 1, 1952, pp. 247253 http://etd.lsu.edu:8085/docs/available/etd-0709103-175151 Dumore, J M, “Stability Considerations In Downward Miscible Displacements”, SPE Journal, Dec 1964, pp. 356 – 362, Trans AMIE 231 Perkins, T K, Johnston O C, “A Review Of Diffusion And Dispersion In Porous Media”, SPE Journal, Mar 1963, pp. 70 – 84, Trans AMIE v. 228. Virnovsky, G A, Helset, H M, Skjaveland, S M, “Stability of Displacement Fronts in WAG Operations,” SPE Journal, Dec 1996, pp. 383-394 Supraniowicz, R, Butler, R M, “Vertical confined water drive to horizontal well: Part I: Water and oil of equal densities”, Paper # 2, presented at the third technical meeting of the south Saskatchewan section, the petroleum society of CIM, held in Regina, Sept 25 – 27, 1989. Rao, D N, Xu, Q, Ayirala, S, Kulkarni, M, “Development And Optimization Of Gas-Assisted Gravity Drainage (GAGD) Process For Improved Light Oil Recovery” Quarterly Technical Progress Report, Jul 2003 Moissis, D E, Miller, C A, Wheeler, M F, “A parametric study of viscous fingering in miscible displacement by numerical simulation”, Technical report 87-18, Rice University, Houston TX, June 1987, Available: Numerical Simulation in Oil Recovery, Minneapolis, Minn., 1986, pp. 227-247, Springer, New York, 1988. Kalaydjian, F, Vizika, O, Moulu, J C, “Role of wettability and spreading on gas injection processes under secondary conditions”, presented at the 7th European IOR symposium, held in Moscow, Russia, Oct 27-29, 1993 Green, D W, Willhite, G P, “Enhanced oil recovery”, SPE Textbook series, Volume 6, 1998. Ekrann, S, “An Analysis of Gravity-Segregated Piston-Like Displacement in Stratified Reservoirs,” SPE Reservoir Engineering, Feb 1992, pp. 143-148. Dietz, D N “A Theoretical Approach to the Problem of Encroaching and Bypassing Edge Water,” Proc., Koninklijke Nederlandsche Akad. Wetenschap, Vol. B56, 1953, pp. 83. Butler, R M, “Gravity Drainage to Horizontal Wells”, JCPT – 92 – 04 – 02, presented at the 42nd Annual Technical Meeting, of the petroleum society, Apr 1992, vol. 31, No. 4. Brigham, W E, “Mixing Equations in Short Laboratory Cores”, SPE Journal, Feb 1974, pp. 91 – 99, Trans AMIE v. 257 Tiffin, D L, Kremesec, V J, “A mechanistic study of gravity-assisted flooding”, SPE/DOE 14895, presented at the SPE/DOE fifth symposium on Enhanced oil recovery of the Society of Petroleum Engineers and the Department of Energy, held in Tulsa, OK, April 20-23, 1986. Virnovsky,