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Oil and Gas Field Services, NEC
Bailing, Cleaning, Swabbing, and Treating of Wells
Building Oil and Gas Well Foundations On Site
Construction, Repair, and Dismantling Services
Detection and Analysis Service, Gas
Excavating Slush Pits and Cellars
Fire Fighting, Oil and Gas Field
Gas Compressing (Natural Gas) At the Fields
Measurement of Well Flow Rates, Oil and Gas
Oil Sampling Service for Oil Companies
Oil and Gas-Field Services (Unclassified)
Pipe Testing, Oil Field Service
Running, Cutting, and Pulling Casings, Tubes and Rods