18 July 2017

Operator

The person or company, either proprietor or lessee, actually operating an oilwell or lease, generally the oil company by which the drilling contractor is engaged. Compare […]
18 July 2017

Orifice

An opening of a measured diam that is used for measuring the flow of fluid through a pipe or for delivering a given amount of fluid […]
20 October 2021

Outer Continental Shelf (OCS)

All submerged lands lying seaward and outside of the area of lands beneath navigable waters as defined in section 2 of the Submerged Lands Act (43 […]
18 July 2017

Output horsepower

The power that is put out by a unit, operating system, or piece of equipment.