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Hydrothermal silicification and dolomitization in fault system, Irecê Basin (Brazil) - implication for reservoir properties 巴西Irecê盆地断系热液硅化和白云化作用——储层物性意义
Fourth Naturally Fractured Reservoir Workshop Pub Date : 2020-02-11 DOI: 10.3997/2214-4609.2020622009
V. L. Bruna, F. Bezerra, F. Balsamo, C. Menezes, G. Bertotti, J. Lamarche, P. Richard, F. Agosta, C. Pontes
{"title":"Hydrothermal silicification and dolomitization in fault system, Irecê Basin (Brazil) - implication for reservoir properties","authors":"V. L. Bruna, F. Bezerra, F. Balsamo, C. Menezes, G. Bertotti, J. Lamarche, P. Richard, F. Agosta, C. Pontes","doi":"10.3997/2214-4609.2020622009","DOIUrl":"https://doi.org/10.3997/2214-4609.2020622009","url":null,"abstract":"Summary The carbonate rocks exposed in the Irece (Brazil) are pervasively affected by hydrothermal silicification and dolomitization. These mineralizing events drastically changed the original petrophysical properties of the host rock. In order to understand the role played by deformation mechanisms and tectonic evolution of these carbonates on the ingression of the mineralizing fluids, we focused our study on the mineralogical, petrographic, stratigraphic, structural and geochemical characterization of the faulted Neoproterozoic carbonates of the Salitre Formation, central Brazil. In this contribution, we present the first results of a combined outcrop- to micro-scale investigation of the structural evolution of the fracture network responsible for hydrothermal silicification and dolomitization processes.","PeriodicalId":187610,"journal":{"name":"Fourth Naturally Fractured Reservoir Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130105330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Comparison of Fracture Intensity Measured in Outcrop and μCT Core Plugs in a Carbonate Reservoir Analogue 碳酸盐岩模拟储层露头裂缝强度测量与μCT岩心塞裂缝强度对比
Fourth Naturally Fractured Reservoir Workshop Pub Date : 1900-01-01 DOI: 10.3997/2214-4609.2020622030
S. Kokkalas, Richard R. Jones, M. Wilkinson, S. Daniels, S. Gilment, S. Nizamuddin
{"title":"Comparison of Fracture Intensity Measured in Outcrop and μCT Core Plugs in a Carbonate Reservoir Analogue","authors":"S. Kokkalas, Richard R. Jones, M. Wilkinson, S. Daniels, S. Gilment, S. Nizamuddin","doi":"10.3997/2214-4609.2020622030","DOIUrl":"https://doi.org/10.3997/2214-4609.2020622030","url":null,"abstract":"Summary The porosity and permeability structure of fractured reservoirs is highly heterogeneous, however typical subsurface data are unable to quantify this heterogeneity across scales of analysis that are most relevant for fluid flow. Comprehensive analysis of outcrop analogues can provide detailed, quantitative characterisation of the fracture network to produce robust ranges of values for input to discrete fracture network (DFN) or other fracture models. We compare fracture intensities measured from 3D X-Ray Computed Micro-Tomography with those calculated from scan lines measured along 1D tape measure transects in outcrop, and from multiple virtual scan lines in 3D point cloud data acquired from terrestrial laser scanning (lidar) and digital photogrammetry. Micro-tomography is also useful to help extend understanding of fracture intensities to analysis of fracture porosity.","PeriodicalId":187610,"journal":{"name":"Fourth Naturally Fractured Reservoir Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121835728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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