This work explores the development and application of a simulation tool named Valora, designed to catalyze the implementation of value-based management (VBM) within an oil and gas company, with a particular focus on the Economic Value Added metric. This tool was created to provide an analysis of the impact of operational and market variables on a Company s Economic Value Added, especially within the Exploration and Production Segment, offering valuable perspectives for strategic and operational decision-making. The methodology employed in the creation of Valora emphasized incremental value delivery, adaptability, and intensive collaboration among stakeholders, making the tool a valuable resource for simulations and scenario analyses. Through interviews and surveys with users, it was evidenced how Valora improved the understanding and application of value-based management, positively impacting strategic decision-making efficiency and organizational culture. The results obtained with the implementation of Valora, including the conceptual model construction, the initial version in Excel, the tests, and feedback for usability enhancement, and finally, the implementation of the final version via web, demonstrated its efficacy in quantifying the creation or destruction of value resulting from strategic or daily actions. These results underline the relevance of Valora for both business practice and academic enhancement, offering a tool for strengthening value-based management in the oil and gas industry. This study highlights the importance of accessible analytical tools in corporate environments for promoting a value culture and optimizing organizational performance.