COBEM99

S4 Ciências e Engenharia do Petróleo

Title:

THE INFLUENCE OF FAULT PERMEABILITY AND LITOFACIOLOGICAL HETEROGENEITIES ON FLUID-FLOW SIMULATION: AN OUTCROP EXAMPLE, TAUBATÉ BASIN - SP

Summary :

ABSTRACT. THE LATERAL AND VERTICAL COMPARTIMENTALIZATION OF A RESERVOIR GENERALLY INVOLVE MANY UNCERTAINTIES THAT CAN HAVE DECISIVE IMPACT ON THE DESIGN OF DEVELOPMENT PROGRAMS, MAINLY IN THE INITIAL PHASE OF A PETROLEUM FIELD EXPLOITATION. THE PRODUCTION DATA, UNFORTUNATELY, ARE NOT AVAILABLE IN THE INITIAL PHASE OF EXPLOITATION. THIS WORK SHOWS HOW STRUCTURAL, LITOFACIES AND STRATIGRAFIC HETEROGENEITIES CAN IMPACT ON WATER BREAKTHROUGH, ON ACCUMULATED PRODUCTION AND ON SWEEP EFFICIENCY OF HYDROCARBON RECOVERY WHEN DIFFERENT GEOLOGICAL MODELS ARE SUBMITTED TO THE FLUID-FLOW SIMULATOR. THE GEOLOGICAL FRAMEWORK IS BUILT BASED ON OUTCROP THAT EXPOSES TERTIARY FLUVIAL SEDIMENTS COMPOSED OF SANDSTONES, SILTITS AND SHALES HIGHLY COMPARTMENTALIZED. FOUR PHYSICAL MODELS ARE ELABORATED WITH DIFFERENT PERMEABILITIES ASSIGNED TO THE FAULT SURFACES AND SEDIMENTARY UNITS, USING WATER-DRIVEN SIMULATION WITH PRODUCERS AND INJECTOR WELLS. CONSIDERING THAT THE SIMULATION MODELS REPRESENT THE REAL GEOLOGICAL FRAMEWORK, IT IS POSSIBLE TO MONITOR THE OIL DISPLACEMENT PATTERNS, AS WELL AS TO EVALUATE THE DISTRIBUTION OF THE WATER SATURATION AT THE END OF THE EXPLOITATION. THE RESULT OF THIS STUDY EXHIBIT THE IMPORTANCE AND THE EFFECTS OF THE PHYSICAL MODELS IN THE DEVELOPMENT OF A PETROLEUM RESERVOIR. KEYWORDS:RESERVOIR HETEROGENEITIES, FAULTS, COMPARTIMENTALIZATION, FLUID-FLOW SIMULATION

Author :

Chang, Hung Kiang
Pires, Luís Carlos G.

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