TY - JOUR
T1 - Pressure buildup analysis of gas wells with damage and non-Darcy flow effect
AU - Nashawi, Ibrahim S.
AU - Elgibaly, Ahmed A.
AU - Almehaideb, Reyadh A.
N1 - Funding Information:
The authors express their appreciation to Kuwait University Research Administration for financially supporting this work through a university research grant (EP-014).
PY - 1998/9
Y1 - 1998/9
N2 - This paper presents a technique to analyze pressure buildup test data of gas wells with damage and non-Darcy skin effect. This technique allows the analyst to estimate reservoir permeability and mechanical and rate-dependent skin factors directly by using 2 analysis plots. Formation permeability and rate-dependent skin are obtained from the slope and the intercept of the first plot, respectively, whereas the mechanical skin factor is determined from the intercept of the second plot. In addition, a graphical method to determine the reservoir pressure at infinite shut-in time is proposed. Field and simulated tests are presented to demonstrate the applicability of the technique. The results obtained are compared with new, conventional, and pressure derivative type curve matching techniques.
AB - This paper presents a technique to analyze pressure buildup test data of gas wells with damage and non-Darcy skin effect. This technique allows the analyst to estimate reservoir permeability and mechanical and rate-dependent skin factors directly by using 2 analysis plots. Formation permeability and rate-dependent skin are obtained from the slope and the intercept of the first plot, respectively, whereas the mechanical skin factor is determined from the intercept of the second plot. In addition, a graphical method to determine the reservoir pressure at infinite shut-in time is proposed. Field and simulated tests are presented to demonstrate the applicability of the technique. The results obtained are compared with new, conventional, and pressure derivative type curve matching techniques.
UR - http://www.scopus.com/inward/record.url?scp=0032172037&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032172037&partnerID=8YFLogxK
U2 - 10.1016/S0920-4105(98)00043-6
DO - 10.1016/S0920-4105(98)00043-6
M3 - Article
AN - SCOPUS:0032172037
SN - 0920-4105
VL - 21
SP - 15
EP - 26
JO - Journal of Petroleum Science and Engineering
JF - Journal of Petroleum Science and Engineering
IS - 1-2
ER -