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This paper describes the new approach in GIS planning and implementation processes at the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (ANP). This agency has as its mission to regulate the oil, natural gas and biofuels industry in Brazil. The new solution adopted is based on the ArcGIS integrated family of geospatial information system productsrunning with the support of an ORACLE relational database. These geoprocessing tools link, via a 100 Mb/s fiber optical private connection, the ANP corporate database with a geospatial database (geodatabase) and the Exploration & Production Database (BDEP), providing, at a first moment, web mapping facilities through an Intranet geosciences' portal called SING (acronym of Geosciences Information System in portuguese), which is a portal to the BDEP data and a server-client schema to the ANP upstream sector.