Home / Standards / GB/T 28911-2012 GB/T 28911-2012 Active Vocabulary of drilling engineering for the petroleum and natural gas 石油天然气钻井工程术语 Standard Type GBT ICS 75.020 CCS E13 Status 现行 Issue Date 2012-11-05 Implementation 2013-03-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委