Bringing a piece of equipment into action. It is the phase between construction and operation, namely when one ensures that the equipment (such as a pipeline) is mechanically, electrically complete, that control and instrumentation is operating and one introduces hydrocarbons into the process to commence operational processing.
Once gas enters an LNG gasification terminal it is commingled with the gas of other consumers so that it is impossible to know which sources belong specifically to any particular consumer
Gas from two or more sources combined into one stream of gas
A wellbore completed in two or more reservoir zones that are not in hydraulic communication in the reservoir
The commercial marketing of an oil or gas discovery is complex and its success depends on a number of factors. There is also a huge difference between an onshore and an offshore discovery, since the offshore fields require considerably larger investments to bring to market. There is also a vast difference between an oil and a gas discovery since the commerciality of a gas discovery depends on the ability to find an attractive market for the gas, since gas contrary to oil is not a commodity which is sold at a similar price around the world. The commerciality of an oil discovery is also very much influenced by global prices and thus a discovery which may not be commercial when oil is $20 a barrel may become commercial when oil hits a price of $80 a barrel. Thus an oil or gas discovery which may not be commercial under certain market conditions may become a commercial discovery with changing market conditions, or vice versa
