Natural Gas Processing from Midstream to Downstream

3 Thermodynamic Modeling of Natural Gas and Gas Condensate Mixtures

Epaminondas Voutsas¹, Nefeli Novak¹, Vasiliki Louli¹, Georgia Pappa¹, Eirini Petropoulou¹, Christos Boukouvalas¹, Eleni Panteli², and Stathis Skouras²

¹Laboratory of Thermodynamics and Transport Phenomena, School of Chemical Engineering, National Technical University of Athens, Greece

²Equinor ASA, Research & Technology Center, Trondheim, Norway

Chapter Menu

1. 3.1 Introduction
2. 3.2 Thermodynamic Models
3. 3.3 Prediction of Natural Gas Dew Points
4. 3.4 Prediction of Dew Points and Liquid Dropout in Gas Condensates
5. 3.5 Case Study: Simulation of a Topside Offshore Process
6. 3.6 Concluding Remarks

3.1 Introduction

Knowledge of the physical properties and the thermodynamic behavior of fluids is important in designing, operating, and optimizing any chemical and physical process. Considering the compositional variations and their various applications, it would require infinite time and effort to measure all physical properties and study their phase behavior, while the additional cost of such practice could be unbearable for the oil and gas industry. It is no surprise that from early on scientists and engineers have used empirical or more advanced, first‐principle models to predict fluid behavior of diverse petroleum mixtures over a wide range of conditions, based on a limited amount of experimental measurements [1]. The increase in computing power has given the opportunity of making numerous calculations ...