Characterizing and Developing Tight Gas Reservoirs (original) (raw)

2015

Abstract

This paper presents a straight forward and technically sound approach for characterizing and planning development of tight gas reservoirs (TGRs). Characterizing a reservoir is simply a determination of basic reservoir characteristics and it involves proper identification of dominant flow regime from acquired well test data. In TGRs the reservoir flow regime can be revealed using diagnostic plots of pressure transient and its derivative but using this technique may lead to erroneous outcomes due to extensive wellbore storage effect, heterogeneity and complexity of reservoir. To overcome such issues transient analysis techniques that utilize higher order pressure derivatives integrated with rate transient analysis (RTA) can reduce uncertainties associated with well test analysis and provide better estimate of reservoir dynamic parameters. Characterizing the reservoir results in determination of reservoir and production characteristics (permeability, fracture length, flow regime).

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