A setting or operating method that uses hydraulic force applied through the tubing or running string to activate a downhole tool.

A compound containing only the elements hydrogen and carbon. It may also exist as a solid, a liquid or a gas. The term is mainly used in a catch-all sense for oil, gas and condensate.

Natural gas injected into a formation to maintain or restore reservoir pressure. Other reasons for gas injection are gas-lift operations, cycling in gas-condensate reservoirs or storing gas.

A well in which fluids are injected rather than produced, the primary objective typically being to maintain reservoir pressure.

Industry Technology Facilitator; an internationally recognized champion for technology innovation within the oil and gas industry acting as a conduit between technology innovators and the industry.

A support structure used to stabilize the injector head and pressure-control equipment on some offshore, or special onshore, coiled tubing units.

A self-contained combination drilling rig and floating barge, fitted with long support legs that can be raised or lowered independently of each other. The jackup, as it is known informally, is towed onto location with its legs up and the barge section floating on the water.

The exit velocity of the drilling fluid after it accelerates through bit nozzles.

A well is said to kick if the formation pressure exceeds the pressure exerted by the mud column.

Liquid condensed by a scrubber following a compression and cooling process.

Large diameter pipes are at least 10 inches or greater so will invariably be welded rather than seamless due to its larger size. The pipe can be produced by longitudinal or spiral welding for applications that often include gas and oil transport.

A barge that is specially equipped to lay submarine pipelines.

The cost of producing oil from a well or lease.

A casing string that does not extend to the top of the wellbore, but instead is anchored or suspended from inside the bottom of the previous casing string.

This is a natural gas (predominantly methane, CH4) that has been converted to liquid form for ease of storage or transport. Liquefied natural gas takes up about 1/600th the volume of natural gas in the gaseous state. It is odourless, colourless, non-toxic and non-corrosive.