Facility Design Solutions for Gas Flaring Reduction in Compliance with Nigerian Regulations – A Practical Approach for New and Existing Facilities

Abstract Nigeria remains one of the world's highest gas-flaring countries, routinely flaring significant volumes of associated gas despite its substantial domestic energy demand and gas commercialization initiatives. Persistent flaring is mostly attributed to inadequate gas handling infrastructure and legacy facility designs, particularly in mature and brownfield oil and gas assets. Beyond its environmental consequences, routine flaring represents a loss of economic value and an increase in regulatory exposure for operators. This paper evaluates how deliberate facility design and targeted retrofit strategies can be used to achieve sustainable flaring reduction while retaining operational reliability and compliance with Nigerian regulatory requirements. The study assessed common facility design limitations that contribute to flaring, including undersized compression systems, limited processing capacity, inadequate redundancy, and poor provision for future gas-utilization tie-ins. Nigerian regulatory frameworks overseeing flaring and gas commercialization were reviewed to demonstrate how compliance requirements influence facility design decisions. Drawing from published industry case studies and established engineering practices, practical facility-based solutions were evaluated, including optimized gas compression schemes, flare gas recovery units, modular gas processing options, gas reinjection systems, and integration of gas-to-power and small-scale gas utilization technologies. The findings are based on a structured review and comparative assessment. They indicate that integrating gas handling considerations at the concept and FEED stages results in measurable reductions in long-term flaring volumes and minimizes the need for costly retrofit interventions. For existing facilities, targeted brownfield measures such as gas system debottlenecking, compression upgrades, and control system optimization were identified as the most technically feasible flaring-reduction pathways. An economic evaluation incorporating order-of-magnitude capital cost estimates, flare penalty avoidance, incremental gas utilization revenue, and production uptime improvement shows that implementation costs can be offset over the asset life. The paper concludes with a feasible framework to guide operators in designing new facilities and upgrading existing assets to minimize gas flaring in Nigeria.