Simpson Oil Field Development, offshore Abutilon Island, Lowendal Islands, North West Shelf

The proposed Simpson Development proposal will make use of three existing wells and one that is the subject of a separate referral.

The development will consist of:

• the Simpson Alpha offshore mini-platform located at the Tanami-4 and Tanami-5 wells surface location;
• the Simpson Bravo offshore mini-platform located at the Simpson-1 and Simpson-3H well locations; and
• a sub-sea pipeline bundle linking the two mini-platforms to each other and to existing facilities on Varanus Island.

The pipeline bundle will consist of:

• a production pipeline transporting oil, produced formation water and natural gas;
• a return water pipeline for disposal of produced formation water into an existing deep disposal well;
• a return gas pipeline containing lift gas; and
• an umbilical containing corrosion inhibitor chemicals and dry utilities gas (compressed gas used to drive chemical injection pumps and other pneumatic devices).