A storage tank with a flat roof that floats on the surface of the oil thus reducing evaporation to the minimum. The roof rests on a series of pontoons whose buoyancy supports the roof proper; a floater. These are used for storage of high volatile components such as gasoline, naphtha and benzene.
A general term for special mechanical devices used to aid the recovery of equipment lost downhole
A well that produces oil or gas by its own reservoir pressure rather than by use of artificial means (such as pumps).
Flexible pipe laid on the seabed for the transportation of production or injection fluids. It is generally an infield line, linking a subsea structure to another structure or to a production facility. Its length ranges from a few hundred meters to several kilometers
Gas initially produced from an underground reservoir
Firm capacity is the amount of energy available for production or transmission which can be (and in many cases must be) guaranteed to be available at a given time. Firm energy refers to the actual energy guaranteed to be available. For instance in the transmission of natural gas a pipeline company would provide its customers with the right to use ‘firm capacity’ within the transportation (and storage) system. Other than in exceptional circumstances (such as during periods of planned maintenance) this firm capacity is expected to be available at all times and enables Shippers to transport gas, subject to conditions, into and/or out of the system
A drilling bit with cutting edges usually hardened against wear
Pressure at the wellhead with well flowing
Cargoes that can be diverted to wherever prices are highest. During 2007 for instance many shipments were diverted away from the US and towards more lucrative Asian and European markets.
