Home / Standards / GB/T 28912-2025 GB/T 28912-2025 Active Test method for two phase relative permeability in rock 岩石中两相流体相对渗透率测定方法 Standard Type GBT ICS 75.020 CCS E12 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A