- Excavating slush pits and cellars (5)
- Detection and analysis service, gas (1)
- Measurement of well flow rates, oil and gas (1)
- Cleaning wells (1)
- Cementing oil and gas well casings (1)
- Gas compressing (natural gas) at the fields (1)
- Gas field services, nec (2)
- Haulage, oil field (3)
- Oil field services, nec (11)
- Processing service, gas (1)
- Servicing oil and gas wells (2)
