In the oil and gas industry, consortia are essential for managing complex operations, such as lifting and offloading, especially in challenging environments, such as pre-salt areas. These operations involve multiple stakeholders and require transparency, accurate data handling, and adherence to contractual terms. This paper explores the integration of permissioned blockchain technology and smart contracts to streamline these processes. Unlike public blockchains, permissioned platforms restrict access to trusted participants, ensuring privacy, security, and transparency. Smart contracts further enhance efficiency by automating key processes such as production volume tracking, financial settlements, and lifting schedules, eliminating the need for intermediaries and reducing human error. The proposed solution, OffloadingBR, is a blockchain-based system built on Hyperledger Fabric. It leverages private channels and smart contracts to manage critical operations within oil and gas consortia. OffloadingBR automates processes related to lifting operations, loans, and refund settlements, ensuring compliance with business rules and contractual obligations. The research also includes a comparative study of permissioned blockchain platforms, highlighting Hyperledger Fabric as the most suitable choice due to its performance, scalability, and privacy features. Results demonstrate that OffloadingBR significantly enhances operational efficiency and strengthens collaboration among consortium members by providing a secure and transparent offloading process.