Abstract
This chapter discusses techniques to analyze data in the bilinear flow period. New type curves are now available for pressure analysis of fractured gas wells, and the problem in the analysis is reduced considerably with the use of these type curves. Prefracture information about the reservoir is necessary to estimate fracture parameters. These type curves are specifically needed for massive hydraulic fractured (MHF) wells to handle production under constant pressure and constant rate. A fracture is said to have an infinite flow capacity when there is little or no pressure drop along the axis of the fracture. The fracture is also said to have a finite flow capacity when there is a significant pressure drop along its axis.
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