SPE Journal · 2006 · 76 citations · 7 references
EngineeringPetroleum EngineeringReservoir CharacterizationWell LoggingWell TestingDrawdown TestingGas Well TestingOil Well TestingPressure Transient AnalysisWell HydraulicsWell Test AnalysisConstant-rate Drawdown TestingDeconvolutionPressure Drawdown TestingPressure Transient InterpretationPressure-rate DeconvolutionTransient Pressure ResponseVariable-rate Well TestingWell Test Deconvolution
Pressure‑rate deconvolution represents variable‑rate well‑test data as a constant‑rate drawdown response, allowing deeper insight into pressure transients and extracting more information than conventional methods, and can sometimes interpret data in terms of a larger radius of investigation, but several specific issues must be considered. The paper identifies and discusses these issues and offers practical recommendations for producing correct deconvolution results. The authors demonstrate reliable use of deconvolution on several real test examples.
Summary Pressure-rate deconvolution provides equivalent representation of variable-rate well-test data in the form of characteristic constant rate drawdown system response. Deconvolution allows one to develop additional insights into pressure transient behavior and extract more information from well-test data than is possible by using conventional analysis methods. In some cases, it is possible to interpret the same test data in terms of larger radius of investigation. There are a number of specific issues of which one has to be aware when using pressure-rate deconvolution. In this paper, we identify and discuss these issues and provide practical considerations and recommendations on how to produce correct deconvolution results. We also demonstrate reliable use of deconvolution on a number of real test examples.
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