ICMS'2000 logo


The International Conference on Multiphase Systems, ICMS'2000
Ufa, RUSSIA, June 15-17, 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.