• High-temperature deep wells, low/ultra-low permeability reservoirs, unconventional oil & gas (shale/tight gas/tight oil), and fracturing operations with extremely high requirements for reservoir protection.
• Specific examples:
• High-temperature deep wells (>120℃, up to 160℃, depth >4000 meters)
• Ultra-low permeability reservoirs (permeability <0.1 mD)
• Shale gas fracturing (requiring low Residue (mg/L), low damage, used with slickwater)
• Offshore oilfield fracturing (stricter environmental and damage control)
• Refracturing or stimulation of sensitive reservoirs