13890 - Oil & Gas field services (General)
1389011 - - Cementing oil & Gas wells
1389012 - - Acidizing & other Chemical treatment of Oil & Gas wells, excl hydraulic fracturing
1389013 - - Perforating oil & Gas well casings
1389014 - - Oil & Gas well surveying & Well logging
1389021 - - Hydraulic fracturing of Oil & Gas wells
1389024 - - Running, Cutting & Pulling casings, Tubes, or Rods for Oil & Gas wells
1389025 - - Installing oil & Gas field production equipment, such as Wellhead fittings, Pumps & Engines
1389026 - - Cleaning out, Bailing out, or Swabbing oil & Gas wells
1389035 - - Pumping oil & Gas wells excl operating leases
1389036 - - Other Oil & Gas field services