This standard specifies the drilling time classification, values, indicators and calculation methods for technical and economic evaluation. This standard applies to onshore oil and gas drilling technology statistics, analysis and evaluation. Marine drilling and geological exploration can also be implemented by reference.
SY/T 5841-2011 history
2011SY/T 5841-2011 Drilling tech-economic indexes and calculation methods
2005SY/T 5841-2005 Drilling tech-economic indexes and calculation methods
1993SY/T 5841-1993 Drilling Technical Economic Index and Calculation Method