In this research, the modeling and application of a new three-dimensional, two-phase, three-component surfactant simulator are presented. The simulator is based on the non-Darcy flow characteristics of surfactant flooding in the low permeability formations. The change of threshold pressure and influences of surfactant on convection, diffusion, adsorption, and retention, are all considered. A new equation for the calculation of surfactant adsorption is employed, which can significantly promote the matching degree between the mathematical model and field practice. This mathematical model was adopted to conduct a field scale simulation modeling for a surfactant flooding pilot of the Chao-522 field, Daqing.

Base on the predictions of several injection cases, the injection process was fixed and injection parameters were optimized. The practical injection has received significant feedbacks, like pressure reduction, injection rate increase, and oil recovery increase. The average incremental oil production rate for the individuals was up to 30%. The pilot testing showed a favorable industrial potential in the Chao-522 field.

You can access this article if you purchase or spend a download.