marine vessels used to provide well intervention services in the field of oil and gas drilling, namely, boats and ships used to provide and support well maintenance and well repair operations; marine vessels used to provide and support well production services, namely, boats and ships enhancing well production by way of hydraulic fracturing of subsurface geologic formations; marine vessels, namely, boats and ships used for well plugging and well abandonment operations in the nature of well closure, namely, cementing, setting cement plugs, clearing of wells and, cleaning of wells
Vehicles