In a producing natural gas well, a wellhead is placed on the surface to maintain control of the well and the well is pressure-tested to ensure that it is safe.
The wellhead contains barriers, valves, seals and a gas/water separator. It allows the pressure of the well and the flow of fluids to be controlled at the surface.
The well will be connected to a pipeline so gas can be transported to markets. This requires either building a new pipeline or connecting the well to an existing pipeline.
Gas can be used within Australia for electricity generation, household gas and industrial uses.
It can also be sold into export markets as liquefied natural gas (LNG).
LNG plants super-chill the gas to liquefy it. LNG’s volume shrinks to 1/600 of the space taken by natural gas in its gaseous form, enabling export via purpose-built tankers.