Reducing Diesel Consumption and GHG Emissions Using Hydrogen in Drilling Rigs

Abstract

Abstract The energy industry is seeking to reduce its environmental impact and transition towards a low-carbon future. One way to achieve this goal is by reducing greenhouse gas (GHG) emissions associated with the operation of drilling rigs. This paper describes the Development of a product and a process to inject hydrogen in the engine inlet of a diesel motor generator, which acts as a combustion optimizer, thus increasing efficiency in diesel burning, and reducing diesel consumption and GHG emissions. The project involves retrofitting a diesel engine with a hydrogen injection system, using hydrogen produced by demand through electrolysis and a control system. The diesel engine operates as usual, but the hydrogen system injects a small amount of hydrogen produced by demand into the engine's intake air. The hydrogen mixes with the air and fuel mixture, improving combustion and reducing emissions. The hydrogen also helps to reduce the fuel's ignition delay, allowing for more complete combustion and reducing the formation of particulate matter. An electronic control unit (ECU) controls the hydrogen injection system, which adjusts the amount of hydrogen injected based on engine load and other operating conditions. The ECU also monitors the engine's performance and adjusts the injection rate to ensure optimal performance and emissions reduction. The paper presents the results of a feasibility study, which assesses the technical, economic, and environmental viability of the project. The pilot conducted in Ocyan's ODN I Drilling Rig, last year (2022) has shown some excellent results leading to up to 6% improvement in fuel efficiency and CO2 emissions reductions, up to a 31% reduction in carbon monoxide emissions and up to 34% reduction in hydrocarbon emissions. These results are aligned with studies that have shown that hydrogen injection can lead to significant reductions in GHG emissions and other pollutants. During the research and development phase ongoing now, the plan is to execute and study more specific emissions and comparison tests to ensure these reductions. The paper also discusses the challenges and opportunities associated with the adoption of hydrogen technology in the oil and gas industry and provides recommendations for future research and development. The project is important for the energy industry because it demonstrates the potential of hydrogen technology to reduce emissions, improve efficiency, and support the transition to a low-carbon energy system. By investing in this project, the industry can play a leading role in addressing climate change and contributing to a sustainable future.