Experimental Measurement of Dew Points for High Carbon Dioxide Natural Gas

1. ABSTRACT
This project is all about the experimental measurement of dew points of natural gas which is high in carbon dioxide. Even though, there are several means to measure dew points, this project put its main focus on the PVT apparatus measurement which is the Fluid-Eval Vinci Standard Version. Carbon dioxide has a unique ability to reduce the dew point pressures and hence, measuring accurate and precise dew points for this kind of gas definitely going to be a challenging affair. Nevertheless, the main objectives of this particular project are to study and get a deep knowledge on the phase behavior for high carbon dioxide natural gas, to measure experimentally the dew points for high carbon dioxide natural gas using PVT equipment and also to predict the same dew points using commercial software. The final objective is to make a good comparison between the measurement and prediction results. The research methodology used in this project is firstly reading many articles and research papers to get good understanding on the fluid phase behavior. Secondly, measuring experimentally the dew points for high carbon dioxide natural gas and then predicts the dew points with the aid of commercial PVT software such as HYSYS, Multi Flash or CSMGem. Lastly, making comparison between the experimental measured dew points with the prediction to see how closely the deviations are related by calculating the average absolute deviation percent (AADP) and also percentage deviation (% DEV). Thus, by calculating the AADP value and % DEV value, we would be to minimize error in measuring in order to obtain much reliable and accurate dew points.