Abstract
This work presents four newly developed correlations to estimate dew-point pressure, current specific gravity and producing yield of gas condensate reservoirs. The first correlation may be used to predict the dew-point pressure of the reservoir gas at reservoir temperature using readily available field data. There have been several attempts to correlate dew point pressures to original reservoir gas composition. The results have been reasonably accurate, but there was no evidence in the literature that a correlation based on reservoir gas specific gravity has been attempted. The second correlation can be used to estimate the specific gravity of the gas currently in the reservoir, after some depletion, using the original reservoir gas specific gravity and the ratio of the current pressure to the dew-point pressure. There have been several attempts to correlate the compositions of partially depleted reservoir gases with the composition of the original reservoir gas with good results. It follows that the proposed correlation of specific gravities of the partially depleted reservoir gas could be done with fairly good accuracy. The third correlation can be used to predict the producing yield using the current reservoir gas specific gravity. There was no evidence in the literature that anyone has attempted to do this correlation. The fourth correlation estimates directly the producing yield from readily available field data. No literature has been found regarding this correlation. The proposed correlations were developed using 190 complete constant volume depletion studies and 425 partial reports of composition found in the literature. Therefore a total of 615 sets of data were available for correlating dew-point pressures and 190 complete reports were used for correlating specific gas gravities and producing yields.
Ovalle Cortissoz, Adriana Patricia (2002). New correlations for dew-point, specific gravity and producing yield for gas condensates. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -2002 -THESIS -O88.