This paper presents an integrated technique for evaluating the production performance of gas wells with finite-conductivity vertical fractures. Our methodology combines conventional pressure transient test analysis with new material balance decline type curves developed specifically for gas wells with finite-conductivity, vertical fractures. We utilize short-term pressure buildup test analysis to enhance the production data analysis, particularly for interpretation of early-time transient flow behavior. We illustrate—with several field cases—that both techniques can be integrated to provide not only a more consistent and systematic analysis methodology, but also a more accurate assessment of stimulation effectiveness.
Keywords:decline type curve, upstream oil & gas, fracture conductivity, production data, drillstem testing, pseudopressure function, pressure transient testing, conductivity, type curve, two-week pressure buildup test
Copyright 2005, Society of Petroleum Engineers