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Waterflooding Performance in Inclined Communicating Stratified Reservoirs

El-Khatib, Noaman A.F. (2010) Waterflooding Performance in Inclined Communicating Stratified Reservoirs. In: SPE North Africa Technical Conference and Exhibition held in Cairo, Egypt, 14–17 February 2010., 14 - 17 February 2010, Cairo , Egypt.

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Abstract

A mathematical model is developed for performance prediction of waterflooding performance in communicating stratified reservoirs with a dip angle from the horizontal. The effect of the gravitational force is reflected by a dimensionless gravity number in the fractional flow formula that accounts for the dip angle and density difference between the displacing and displaced fluids. The developed model is used to estimate the fractional oil recovery, the water cut, the dimensionless time and the injectivity ratio at times of water breakthrough in the successive layers. Eqations are also derived for the case of continuous log–normal permeability distributions characterized by the Dykstra–Parsons variation coefficient VDP or the standard deviation of the log–normal distribution k. Solutions for inclined communicating stratified systems with log normal permeability distribution were obtained and the performance was compared with that of the horizontal systems. The effects of the gravity number, the mobility ratio and the Dykstra-Parsons permeability variation coefficient, VDP , on the performance are investigated and discussed. The obtained results showed that the gravity effect of the dip angle enhances the performance in terms of delayed water breakthrough, higher fractional oil recovery and lower water cut. This improved performance is more significant in the case of unfavorable mobility ratio.Reservoir dipping does not affect the pseudo relative permeability functions but results in a decrease in the injectivity ratio

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TN Mining engineering. Metallurgy
Academic Subject Two:Geosciences
Academic Subject Three:petroleum engineering
Departments / MOR / COE:Departments > Geoscience & Petroleum Engineering
ID Code:7692
Deposited By: Prof Dr Noaman Abd El Fttah Mohamed El Khatib
Deposited On:09 May 2012 00:20
Last Modified:20 Mar 2017 07:17

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