• Applicable scenarios:
• High-temperature deep wells (>160℃): When conventional guar systems lack temperature resistance.
• High closure pressure reservoirs: Require high-strength proppant and high fluid Viscosity (mPa·s).
• High proppant concentration fracturing (concentration >30%): Requires strong fluid proppant suspension to avoid screenout.
• Main fracture fracturing in shale gas: Forms "main fracture + branch fractures" composite mode with slickwater.
• Offshore fracturing: Polymer systems are easy to control and break cleanly.