A case study to optimum selection of deliquification method for gas condensate well design: South Pars gas field

Abstract

Optimum decision making is an ongoing problem in production engineering. Dynamic well characteristics during the project life, different reservoir and well conditions, and policies of the companies lead to complex problems. Today, the most effective liquid-removal devices are pumping, the combination of liquid-diverter with gas lift and velocity string. Considering mentioned complexities, the most efficient method of liquid removal is different from one well to the others. This paper discusses a multi-criteria decision making (MCDM) strategy for ranking these methods based on ELECTRE and TOPSIS techniques in a gas condensate reservoir. The most efficient model in this case, regarding its high efficiency and level of reliability is continuous gas lift. These procedures can be extended to other cases easily by changing the comparison matrix and user defined weights.

Keywords

• Artificial lift
• ELECTRE method
• Deliquification method
• TOPSIS method
• User defined weight
• Shannon’s Entropy calculation