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).