- Acidizing wells on a contract basis
- Bailing wells on a contract basis
- Building oil and gas well foundations on a contract basis
- Cementing oil and gas well casings on a contract basis
- Chemically treating wells on a contract basis
- Cleaning lease tanks, oil and gas field: on a contract basis
- Cleaning wells on a contract basis
- Derrick building, repairing, and dismantling: oil and gas-on a contract basis
- Dismantling of oil well rigs (oil field service) on a contract basis
- Erecting lease tanks, oil and gas field: on a contract basis
- Excavating slush pits and cellars on a contract basis
- Fishing for tools, oil and gas field: on a contract basis
- Gas compressing, natural gas at the field on a contract basis
- Gas well rig building, repairing, and dismantling on a contract basis
- Grading oil and gas well foundations on a contract basis
- Hard banding service: on a contract basis
- Hot oil treating of oil field tanks: on a contract basis
- Hot shot service: on a contract basis
- Hydraulic fracturing wells on a contract basis
- Impounding and storing salt water in connection with petroleum production
- Lease tanks, oil and gas field: erecting, cleaning, and repairing-on a contract basis
- Logging wells on a contract basis
- Mud service, oil field drilling: on a contract basis
- Oil sampling service for oil companies on a contract basis
- Oil well logging on a contract basis
- Perforating well casings on a contract basis
- Pipe testing service, oil and gas field: on a contract basis
- Plugging and abandoning wells on a contract basis
- Pumping of oil and gas wells on a contract basis
- Removal of condensate gasoline from field gathering lines: on a contract basis
- Roustabout service: on a contract basis
- Running, cutting, and pulling casings, tubes, and rods: oil and gas field
- Servicing oil and gas wells on a contract basis
- Shooting wells on a contract basis
- Shot-hole drilling service, oil and gas field: on a contract basis
- Surveying wells on a contract basis, except seismographic
- Swabbing wells: on a contract basis
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