Application of expert systems for accurate determination of dew-point pressure of gas condensate reservoirs

作者：Rostami Hosseinkhani Hadi^*; Esmaeilzadeh Feridun; Mowla Dariush

来源：Journal of Natural Gas Science and Engineering, 2014, 18: 296-303.

DOI：10.1016/j.jngse.2014.02.009

• Gas condensate
• Dew-point pressure
• Modeling
• Radial basis function networks

Dew-point pressure is a parameter that has a key role in development of gas condensate reservoirs. Dropping of reservoir pressure below the dew-point pressure results in a decrease in production because of near wellbore blockage. In addition, due to separation of liquids, the produced gas has fewer valuable components. This study tries to develop a dependable method based on machine learning to adequately predict this important parameter. The intelligent system used in this work is Radial Basis RBF) network that is a very flexible tool for pattern recognition. This model was developed and tested using a total set of 562 experimental data point acquired from different retrograde gas condensate fluids covering a wide range of variables. To optimize the tuning parameters of the proposed model, genetic algorithm was incorporated. This study also presents a detailed comparison between the results predicted by the proposed RBF model and those of other universal empirical correlations and intelligent systems for estimation dew-point pressure. The results showed that the presented model is superior to the pervious classic correlations and also intelligent systems.

• 出版日期2014-5