Gas Production and Reservoir Settlement in NGH Deposits under Horizontal-Well Depressurization

Key Points

• Gas extraction from natural gas hydrate reservoirs increases risks of geohazards like landslides and methane leakage, highlighting safety concerns.
• Methane leakage poses significant hazards, observed in regions undergoing horizontal-well depressurization for NGH extraction, with potential for severe environmental impact.
• Observational analysis across various NGH reservoir sites helps shed light on settlement behavior during gas production, guiding safer extraction methodologies.
• The findings underscore the need for continued research into the relationships between gas production and geohazards in natural gas hydrate deposits.