Estimation of Uncertainles in Gas-Condensate Systems Reserves by Monte Carlo Simulation

Abstract

In the paper, an impact of improper condensate sampling on calculation of gas and condensate reserves of gas-condensate system is presented. The paper discusses probabilistic methods in reserves estimation (proven, possible, probable). The Peng-Robinson equation of state (EOS) has been used to calculations of phase properties. Sensitivity of CGR during recombination of stream process on liquid and gas reserves has been shown. The large error in estimation of condensate reserve has been obtained. The impact of CGR error on the vapor phase reserve is small.

Keywords

• uncertainty gas condensate reserves
• Monte Carlo porous medium sampling recombination