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S4 Ciências e Engenharia do Petróleo |
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Title:
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FACIES PROPORTION MATRIXES BUILDING FOR 3D GEOLOGIC MODELLING OF RECÔNCAVO BASIN DELTAIC RESERVOIRS (BA)
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Summary :
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THE FACIES PROPORTION MATRIX IS A TOOL WHICH ENABLES THE CONSTRUCTION OF 3D MODELS FOR THE DISTRIBUTION OF RESERVOIR HETEROGENEITIES BY USING WELL AND SEISMIC INFORMATION. THIS PAPER AIMED TO BUILD PROPORTION MATRIXES OF THE DELTAIC FACIES OF THE POJUCA FORMATION IN THE RECÔNCAVO BASIN THROUGH DIFFERENT METHODOLOGIES AND TO SHOW THE RESULTS OF THEIR STOCHASTIC SIMULATIONS THROUGH A TRUNCATED GAUSSIAN ALGORITHM. BEFORE BUILDING THE PROPORTION MATRIXES FOUR LITHOTYPES (DIFFERENT FACIES GROUPED BY SIMILAR POROSITY AND PERMEABILITY CHARACTERISTICS) WERE DEFINED AND THEIR SPATIAL DISTRIBUTION WAS ANALYSED. THE FACIES PROPORTION MATRIXES BUILT FOR THESE ZONES AND FOR THE STUDIED STRATIGRAPHIC SECTION SIGNIFICANTLY IMPROVED THE UNDERSTANDING OF THE RELATIONS IN HORIZONTAL AND VERTICAL CONTINUITIES THAT EXIST AMONG THE LITHOTYPES. THE SIMULATION IMAGES CONFIRM THAT THE LITHOTYPE PATTERNS OF CONTINUITY DEPEND ON THE TYPE OF PROPORTION MATRIX USED. THEY ALSO CORROBORATE THE IMPORTANCE OF USING PROPORTION MATRIXES TO MODEL HETEROGENEOUS RESERVOIRS.
KEY-WORDS: PROPORTION MATRIX,GEOLOGIC MODELLING,GEOSTATISTICS,FACIES, RESERVOIRS |
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Author :
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Braga, Mario Sérgio dos Santos
Souza Jr., Olinto Gomes de
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Paper View :
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