The International Conference on Multiphase Systems, ICMS'2000
|Chemical Treatment of Wells: Problems, Methods Simulation|
Fedorov K. M., Kadochnikova L. M.
Tyumen State University, Surgutneftegas Research Institute, Tyumen, Russia
This paper presents an analytical technique for simulation and analysis of gel treatment process in a stratified oil reservoir. Calculations were performed with multicomponent 1-D simulator in each layer of a reservoir that has the facility to describe the gelation of Na2SiO3 + CaCl2 reagent due to high reservoir temperature (temperature initiation) or/and low pH value in a porous media. Kinetics of these reactions were analysed in experiments, kinetic constants were obtained.
Simplified axial problems of reagent propagation and gelation in near well watersaturated zone of a reservoir were considered. Analytical solutions of linear problems in one isolated layer were obtained. Analytical technique for simulation of gel treatment in a stratified reservoir was generated. Proposed technique was tested by a comparison with four case histories of profile improvement in injection wells using gel treatment.