SPE Annual Technical Conference and Exhibition · 1987 · 31 citations · 9 references
EngineeringGeological EngineeringPetroleum EngineeringFormation EvaluationReservoir EngineeringWell TestingFormation Pressure EvaluationFormation TestingFracture CharacterizationFracture MechanicsWell Test DesignWellbore Storage EffectsFormation Fracture PressureFracture Pressure TestingMulti-rate TestingStep-rate Pressure TestingStep-rate TestingVariable-rate Well TestingWellbore Pressure AnalysisWellbore Storage Analysis
ABSTRACT Step rate testing (SRT) has been used for several years to determine the formation or fracture parting pressure (FPP). Unfortunately, little is available in the literature regarding SRT design and analysis. Further, the available guidelines are inadequate and may lead to questionable values of the FPP. A systematic investigation of several significant factors affecting SRT design and analysis is presented. The analysis of SRT data influenced by wellbore storage and changing wellbore storage is investigated. The proper application of multirate analysis methods to SRT data is outlined. A new method is proposed for determining parting pressure from SRT data on fractured wells. Field examples are included. This work should significantly enhance our ability to successfully design and analyze the step rate tests.
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Fracture Design Considerations Based on Pressure Analysis
K. G. Nolte · 1982 · 116 citations
Engineering, Petroleum Engineering, Hydraulic Fracturing +16