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- Title
APPLICATION OF CUBIC SPLINE NUMERICAL MODELING ON DISPLACEMENT MECHANISM.
- Authors
Mamudu, Abbas; Olalekan, Olafuyi
- Abstract
Estimation of incremental oil recovered in a successful enhanced oil recovery (EOR) project has always been done over the years using already established formulae, undermining substantially some inherent challenges. To address some of these posed shortcomings, however, necessitates the need to model the EOR curve. This research paper presents the formulation and application of a highly sophisticated numerical model to model the incremental oil recovery curve in order to obtain improved values of the incremental oil recovered. Rate-time curves from laboratory data for surfactant and polymer flooding were used. The methodology used was cubic spline numerical modeling. "OUR" algorithm was used as the solution method to tridiagonal system of equations formed. Different and continuous equations were derived for each interval between successive data points (knots) and then joined together piecewise to form the composite equation to represent the EOR process. The incremental oil recovered was then obtained by applying the cubic spline to quadrature (numerical integration). The results showed that the incremental oil obtained by the cubic spline model was 2.7% and 5.6% more than that obtained by the trapezoidal rule in the surfactant and polymer flooding respectively. The trapezoidal rule would always give less amount of the incremental oil because the exactitude of its results is dependent on the linearity of the function being approximated. This suggests that the cubic spline model gives better results.
- Subjects
MISCIBLE displacement (Petroleum engineering); SPLINE theory; ENHANCED oil recovery; SURFACE active agents; MICELLAR flooding (Petroleum engineering); POLYMER flooding (Petroleum engineering)
- Publication
Petroleum & Coal, 2015, Vol 57, Issue 3, p225
- ISSN
1335-3055
- Publication type
Article