Abstract
Tight gas condensate reservoirs are an important source of reserves and exhibit unique flow and thermodynamic behaviors. Owing to the overwhelming effects from nano-pores, formation damage mechanisms are uncertain. Significant phase and compositional change occurs in the circumstances where nano-pores dominate. Productivity reduces faster than most existing models could explain owing to a lack of understanding how the condensate affects deliverability, and how the flow and phase behavior would have been altered in unconventional reservoirs caused by those nano-pores. This paper presents a novel formulation that consistently evaluates capillary force using pore size distribution (PSD) directly from core measurements. This study develops a better understanding of production- induced formation damage in important liquid-rich formations for an optimal production strategy, to mitigate productivity risks associated with condensate blockage at reservoir conditions.
