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Dynamic Data Analysis – v5.12.01 - © KAPPA 1988-2017
Chapter
3 – P ressure Transient Analysis (PTA)- p59/743
Fig. 3.A.9 – Bourdet derivative type curve
Type-curve techniques turned obsolete in the mid-1980s with the development of PC based
software and the direct generation of more and more sophisticated analytical models, taking
into account the complete pressure and flow rate history.
Fig. 3.A.10
2K Composite reservoir
Fig. 3.A.11
Fractured horizontal well
Fig. 3.A.12
Conductive fault
The core diagnostic tool remained the Bourdet derivative. Solutions were no longer unique,
and the engineer was challenged to search for the most consistent answer by considering
information available from all sources. The match of the model on the real data governed the
validity of these analysis, while straight-line methods were made redundant. Beyond
superposition and the use of more sophisticated models, PC based software allowed nonlinear
regression to improve results by history matching the data with the models.
Fig. 3.A.13 – 1990-2000’s – PC based PTA