Extraction and Utilisation of H2 from Produced Water Specially from Abandoned Wells

Abstract

The energy transition to sustainable sources is imperative for global environmental challenges. Hydrogen (H2) seems to be a promise since is a key energy carrier in this transition. However, electrolysis of underground water presents challenges due to mechanical and chemical parameters. This study investigates these complexities using MATLAB simulations and emphasizes the importance of predicting H2 production and optimizing electrolysis efficiency. To accomplish this aim, more than 20 experiments examined the impact of chemical reactions on electrolysis using complex underground water. Sufficient direct current (DC) power supply and studying treatment effects using the FM experiment were crucial. In addition, this work explores the challenges of utilizing H2 in perforation and fracturing operations, emphasizing the need for research, tool development, and process refinement to ensure safety and minimize environmental impact. Therefore, this study underscores the need for a comprehensive understanding of the electrolysis process in the energy transition to hydrogen. It highlights the challenges of underground water electrolysis, the role of mechanical and chemical parameters, and the importance of precise treatments and predictions. By addressing these factors, optimal H2 production can contribute to a successful and sustainable energy transition.