Lifetime oriented design of natural gas offshore processing for cleaner production and sustainability: high carbon dioxide content
| Autor: | Ofélia de Queiroz Fernandes Araújo, Giovani Cavalcanti Nunes, José Luiz de Medeiros, Alessandra de Carvalho Reis |
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| Rok vydání: | 2018 |
| Předmět: |
Renewable Energy
Sustainability and the Environment business.industry 020209 energy Strategy and Management 05 social sciences Fossil fuel Environmental engineering MEMBRANAS FILTRANTES Process design 02 engineering and technology Industrial and Manufacturing Engineering Volumetric flow rate Natural gas 050501 criminology 0202 electrical engineering electronic engineering information engineering Environmental science Production (economics) Cleaner production Enhanced oil recovery Absorption (chemistry) business 0505 law General Environmental Science |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Production of natural gas in deepwaters with high gas-to-oil ratio and high carbon dioxide (CO2) content challenges the design of offshore processing due to area and weight limitations. Furthermore, cleaner production and process sustainability impose sending the separated CO2 to early enhanced oil recovery, which has economic benefit but gradually increases %CO2 in raw gas, paralleled by decaying oil and gas flowrates. These conditions favor CO2 capture by membrane permeation (MP) for bulk removal and chemical absorption (CA) for polishing removal. Hybrid MP-CA has greater flexibility to face varying production and %CO2, demanding lifetime-oriented process design. CO2 production profile is estimated adopting %CO2 retained in source rock (0%, 60%) and gas flowrate predicted by empirical production decline curves. Under transient gas production MP area and operational conditions are optimized via non-linear programming at five points of process lifetime constrained by %CO2 in injected fluid above 75%mol. Treated gas reaches sale specification (%CO2 |
| Databáze: | OpenAIRE |
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