Perpustakaan Digital ITB

The purpose of this study is to find a new proposed correlation to estimate gas production rate and recovery factor at the end of production time in bottom-water-drive gas reservoir. These equations were generated by constructing 2-D reservoir model for 2 phase flow (water-gas) and doing sensitivity analysis to several parameters such as absolute permeability (k) and vertical to horizontal permeability ratio (kv/kh). By using many combinations of production rate and permeability, the results are analized to generate the correlation. The resulted correlation is a polynomial second order having an average error of 8.1 % for Q equation and 1.06 % for RF equation.