Almost all of natural gas transported by the DBNGP is produced in the offshore Carnarvon Basin on the North West Shelf.
The Karratha Gas Plant processes gas produced by the North West Shelf Gas Joint Venture partners, Woodside, Shell, BP, BHP Billiton Petroleum, Chevron and Japan Australia LNG (Mitsubishi / Mitsui).
Natural gas from the Apache operated Harriet (Quadrant Energy / Kufpec), East Spar and John Brookes (both Quadrant Energy / Santos) Joint Ventures, as well as Quadrant Energy and Santos in their own right, is processed on Varanus Island.
Quadrant Energy & Santos completed their Devil Creek project in late 2011, this plant processes gas from the Quadrant Energy / Santos Reindeer fields and with a capacity of 220 TJ/d.
BHP & Quadrant Energy completed the Macedon project in 2013 with an initial processing capacity of 200TJ/d.
In 2013 DBP completed the metering station for the connection of the Chevron operated Gorgon project which will add 187 TJ/d processing capacity from 2016, with a possible expansion to 300TJ/d.
The Chevron operated Wheatstone project is planned to add up to 200 TJ/d to domestic supply from 2018.
Closer to Perth are smaller Perth Basin Gas Production Facilities. Red Gully (owned and operated by Empire Oil and Gas) currently supplies up to 10TJ/d into the DBNGP. New gas production facilities are planned for this region.