This paper represents the first contribution in quantifying the effects of wellbore storage along with those of skin and turbulence intensity on deliverability from gas wells. A decay factor, WD, has been introduced to account for the contribution of sandface flow rate to early-time transient production from the gas wells. Generalized charts for type-curve studies on gas wells, based on pseudopressure and pseudotime concepts, along with wellbore storage, are presented with applications and support from field data.

Keywords:
drillstem/well testing, flow rate, pseudopressure drop, skin effect, pressure drop, upstream oil & gas, partial-differential equation, flow equation, turbulence intensity, wellbore-storage effect
Subjects:
Drillstem/well testing, Formation Evaluation & Management
Copyright 1988, Society of Petroleum Engineers
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