conference paper · SPE Nigeria Annual International Conference and Exhibition
Produced water represents the largest waste stream in oil and gas production, historically managed through compliance-minimum disposal. Focusing on the Niger Delta, an integrated sustainability assessment evaluates established and newer treatment options, including hydrocyclones, induced gas flotation, reinjection, membrane filtration, and locally sourced bio-adsorbents. These systems were analysed alongside field data, life-cycle carbon and energy assessments, regulatory benchmarks against NUPRC and NESREA standards, and economic cost-benefit models. The results demonstrate that shifting from passive disposal to structured resource management significantly enhances environmental, social, and governance ratings. Furthermore, this approach lowers freshwater withdrawals, curbs treatment emissions, and eases ecological pressures on local communities. Adopting methods such as reuse, reinjection, bio-adsorption, and transparent reporting provides lasting operational value while supporting regional energy transition targets.
Oil and gas extraction produces vast quantities of contaminated water that threaten local environments and intensify freshwater scarcity. By moving beyond basic disposal to advanced treatment and reuse, energy operators can reduce environmental harm, cut greenhouse gas emissions, and maintain community trust. This balance of environmental stewardship and economic viability helps secure resource sustainability during broader energy transitions.
The findings highlight practical pathways for oil and gas operators and environmental service providers seeking compliant, lower-carbon water treatment systems. Technologies under evaluation include established commercial options like hydrocyclones and membrane filtration, alongside newer solutions such as locally sourced bio-adsorbents. Because the study combines field data with regulatory benchmarking against NUPRC and NESREA standards, it represents applied and tested research directly relevant to assets operating in the Niger Delta.
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Abstract Produced water (PW) is the single largest waste stream generated across oil and gas operations in local and global regions, yet it represents far more than a disposal problem. Effective PW management has transformed from a compliance need into a facilitator of responsible energy growth as regulatory scrutiny increases, there is increased water scarcity, and expectations of investors around Environmental, Social, and Governance (ESG) rise. This paper uses the Niger Delta as a case study to investigate the management of produced water from an integrated sustainability and ESG perspective. In order to demonstrate why traditional, compliance-minimum approaches are inadequate in the face of mounting environmental, social, and governance pressures, it starts by examining the current state of PW management practices, including primary management strategies and the full range of treatment technologies in use in Nigeria and globally. In light of this, the study evaluates both the well-established and cutting-edge treatment methods, including hydrocyclones, induced gas floatation, reinjection, membrane filtration, and locally sourced bio-adsorbents. It further compares these methods to important ESG performance metrics that include water stewardship, community impact, regulatory compliance, greenhouse gas emissions, and reporting transparency. Field data representing Niger Delta assets, Life-Cycle Assessment (LCA) of carbon and energy intensity across treatment routes, regulatory benchmarking against NUPRC and NESREA standards, and cost-benefit modeling of economic versus ESG outcomes were all integrated into a mixed-method analytical framework. The findings show that regulated produced water management can improve ESG ratings significantly and lessen freshwater withdrawals, ease ecological and community constraints, and minimize treatment-related emissions. The study comes to the conclusion that moving from passive PW disposal to active resource management through reuse, bio-adsorption, reinjection, and transparent reporting creates long-term operational value and establishes oil and gas companies as reliable players in Nigeria's larger energy transition.
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DOI: 10.2118/235138-ms
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