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

作     者：Rodrigo Penna Wagner Moreira Lupinacci Rodrigo Penna;Wagner Moreira Lupinacci

作者机构：Exploratory Interpretation and Reservoir Characterization Group(GIECAR)Department of Geology and GeophysicsUniversidade Federal FluminenseNiteroiRJ24210-346Brazil PetrobrasRio de JaneiroRJ20031-912Brazil 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第3期

页      面：1699-1718页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：The authors thank the Petrobras Libra JPT project and partners (Shell  Total  CNOOC and CNPC) for the data availability. We kindly appreciate Petrobras's Camilla Almeida  Marcos Sebastião  Vitor Mello  André Luis Souza  Rodolfo Victor  Antonio Carlos Nascimento  Leonardo Teixeira  Alexandre Maul and Shell's Louis Sturgess and Wences Gouveia for the technical support and discussions 

主　　题：Flowunits Geostatistical inversion Presalt reservoir 3D reservoir modelling Petrophysical modelling 

摘      要：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.