Sustainable Well Completion Strategies for High-Pressure Reservoirs in Nigeria: Balancing Cost, Technology, and Environmental Impact

Summary Sustainable oilfield operations in high-pressure reservoirs demand innovative completion strategies that balance cost efficiency, technological advancement, and environmental sustainability. This study explores well completion frameworks tailored to Nigeria unique reservoir challenges, focusing on optimizing gravel pack systems as a reliable sand control method. Leveraging insights from advanced reservoir characterization, the study evaluates formation sand size distribution, geomechanical properties, and reservoir heterogeneity to design tailored solutions for high-pressure environments. Innovative completion techniques, including Alpha-Beta wave gravel placement and shunt tube technology, are integrated with real-time pressure monitoring to enhance gravel placement efficiency while minimizing formation damage. The techno-economic analysis reveals that these strategies reduce non-productive time (NPT) and long-term operational costs, making them cost-effective compared to alternative sand control methods. Environmental impact assessments further demonstrate how optimized workflows, and reduced interventions align with sustainability goals by lowering emissions and resource consumption. Results highlight a 15% improvement in well productivity and a 12% reduction in operational costs, emphasizing the effectiveness of these strategies in extending a well lifespan and maintaining reservoir integrity. This work provides industry professionals with actionable insights into developing sustainable well completions tailored to the Nigerian context, addressing regional operational constraints while contributing to global energy transition goals.