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Geostatistical seismic inversion and 3D modelling of metric flow units,porosity and permeability in Brazilian presalt reservoir

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Petroleum Science 2024年第3期21卷 1699-1718页

作者： Rodrigo Penna Wagner Moreira Lupinacci Exploratory Interpretation and Reservoir Characterization Group(GIECAR) Department of Geology and GeophysicsUniversidade Federal FluminenseNiteroiRJ24210-346Brazil Petrobras Rio de JaneiroRJ20031-912Brazil

Flow units(FU)rock typing is a common technique for characterizing reservoir flow behavior,producing reliable porosity and permeability estimation even in complex geological ***,the lateral extrapolation of FU away from the well into the whole reservoir grid is commonly a difficult task and using the seismic data as constraints is rarely a subject of *** paper proposes a workflow to generate numerous possible 3D volumes of flow units,porosity and permeability below the seismic resolution limit,respecting the available seismic data at larger *** methodology is used in the Mero Field,a Brazilian presalt carbonate reservoir located in the Santos Basin,who presents a complex and heterogenic geological setting with different sedimentological processes and diagenetic *** generated metric flow units using the conventional core analysis and transposed to the well log ***,given a Markov chain Monte Carlo algorithm,the seismic data and the well log statistics,we simulated acoustic impedance,decametric flow units(DFU),metric flow units(MFU),porosity and permeability volumes in the metric *** aim is to estimate a minimum amount of MFU able to calculate realistic scenarios porosity and permeability scenarios,without losing the seismic lateral *** other words,every porosity and permeability volume simulated produces a synthetic seismic that match the real seismic of the area,even in the metric *** achieved 3D results represent a high-resolution fluid flow reservoir modelling considering the lateral control of the seismic during the process and can be directly incorporated in the dynamic characterization workflow.

关键词： Flowunits Geostatistical inversion Presalt reservoir 3D reservoir modelling petrophysical modelling

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Application of 3D Static modelling in Reservoir Characterization:A Case Study from the Qishn Formation in Sharyoof Oil Field,Masila Basin,Yemen

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 348-368页

作者： Emad A.ABDULLAH Ahmed ABDELMAKSOUD Musab A.HASSAN Department of Mineral Developing and Oil&Gas Engineering Academy of EngineeringPeople’s Friendship University of Russia(RUDN University)Moscow 117198Russia Department of Earth Sciences Khalifa UniversityAbu Dhabi 127788United Arab Emirates Department of Geology Faculty of ScienceAssiut UniversityAssiut 71516Egypt

Three-dimensional(3 D)static modelling techniques are applied to the characterization of the Qishn Formation(Fm.)in the Sharyoof oil field locating within the Masila basin,southeastern *** present study was initiated by the seismic structural interpretation,followed by building a 3 D structural framework,in addition to analysing well log data and from these,3 D facies and petrophysical models are *** the Sharyoof oil field,the Qishn *** depth values within the range of 400-780 m below sea level,with a general increase towards the SSE.A set of high dip angle normal faults with a general ENE-WSW trend dissect the *** strata are also folded as a main anticline with an axis that is parallel to the fault trend,formed as a result of basement *** to the facies models,the Qishn *** 43.83% limestone,21.53% shale,21.26% sandstone,13.21% siltstone and 0.17% *** Qishn Carbonates Member has low porosity values making it a potential seal for the underlying reservoirs whereas the Upper Qishn Clastics SI A and C have good reservoir quality and SIB has fair reservoir *** Upper Qishn Clastics S2 and S3 also have fair reservoir quality,while the Lower Qishn Clastics zone has good reservoir *** water saturation decreases towards the west and east and increases towards north and *** total original oil in-place(OOIP)of the Upper Qishn clastics is 106 million STB within the SI A,SIC and S2 *** of development wells is recommended in the eastern study area,where good trapping configuration is exhibited in addition to the presence of a potential seal(Upper Qishn Carbonates Member)and reservoir(Qishn Clastics Member)with high porosity and low water saturation.

关键词： upstream exploration petroleum basins seismic interpretation structural modelling well log analysis facies modelling petrophysical modelling Sayun-Masila basin

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Sweet-spot mapping through formation evaluation and property modelling using data from the Goldwyer Formation of the Barbwire Terrace,Canning Basin

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Petroleum 2019年第1期5卷 13-29页

作者： Munther Alshakhs Reza Rezaee Curtin University Petroleum Engineering Department26 Dick Perry AvenueKensingtonWA6152Australia

The Goldwyer Formation of the Canning Basin has been regarded as a highly prospective shale *** study assesses the potential prospectivity of this source rock as an unconventional hydrocarbon *** the sparsity of wells penetrating the Middle Ordovician Goldwyer across the vast underexplored area of the Canning Basin,a basin-wide study of the source rock is not *** assessment of the Barbwire Terrace,a subdivision of the Canning Basin,is carried out *** assessment includes the estimation of key shale play properties,such as,total organic carbon,total porosity,water saturation,and brittleness *** property was estimated from available well data by testing multiple estimation *** values were derived from multiple regressions of different well data.A simplified Archie's equation was used to estimate water *** porosity method was primarily used for total porosity *** data along with density were utilized to estimate brittleness *** property was then modelled across the Goldwyer Formation within the *** provided geostatistical estimates on the propagation of such *** order to generate sweet spot maps for the Barbwire Terrace,averaged maps of different properties were combined in a weighted *** approach attempts to simplify the complexity of unconventional resource assessment,which therefore has provided a single product evaluating the prospectivity of the Goldwyer as a hydrocarbon *** have shown that TOC and porosity are mostly the deciding factors for the prospectivity of this source rock,given that their values can be too small where the Goldwyer is deemed ***,sweet-spot maps show that most prospective zone is the Upper Goldwyer(Goldwyer I),followed by the upper parts of the Lower Goldwyer(Goldwyer III).More specifically,southern flanks of north-western and middle regions of the Barbwire Terrace tend to be more pr

关键词： Sweet-spot maps Formation evaluation petrophysical modelling

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