Type Curve Matching in Laplace Space

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This report presents an investigation on automatic methods of type curve matching, in order to estimate reservoir parameters such as the permeability, porosity and skin factor. The conventional way to analyse well test data is by fitting a curve over the data. Generation of the curve is often performed by using the Laplace transform inversion to obtain the pressure transient in real space. The purpose of this study is to investigate the reverse procedure. It consists of the development and use of numerical Laplace transform routines to forward transform real data into Laplace space and fit them to the Laplace transformed pressure solutions. The numerical evaluation of the forward Laplace transform is performed with an integration formula of the Gaussian type. The limitations of such a procedure are investigated in the case of an infinite acting reservoir. It was found that the method yields an approximation to the Laplace transform located in a featureless part of the Laplace transform pressure solution curve. It is therefore difficult to obtain a unique match.


Type of resource text
Date created June 1983


Author Dutel, Vincent Paul
Primary advisor Horne, Roland N.
Degree granting institution Stanford University, Department of Petroleum Engineering


Subject School of Earth Energy & Environmental Sciences
Genre Thesis

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Dutel, Vincent Paul. (1983). Type Curve Matching in Laplace Space. Stanford Digital Repository. Available at: https://purl.stanford.edu/tn528np2842


Master's Theses, Doerr School of Sustainability

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