17 June 2013

Block 121-Ca Voi-1X exploration well spuds, offshore Vietnam

Origin Energy, on behalf of the Block 121 Joint Venture, is pleased to announce that the 121-Ca Voi-1X well spudded at 0730 hours local (Vietnam) time on 15 June 2013. The well is being drilled using the semisubmersible drilling rig Ocean General.

Origin will only advise the market again when well operations have been completed with a summary of results, or of any event that is material.

Well type and location

The 121-Ca Voi-1X well is situated in the Phu Khanh Basin off the coast of central Vietnam. Prognosed total measured depth of the well is 3,771 metres. The well will be plugged and abandoned after the evaluation is complete.

Block 121 Participating Interests:

Origin Energy (Song Hong) Pte. Ltd * 45%
Premier Oil Vietnam 121 Ltd 40%
Pan Pacific Petroleum Vietnam (121) Pty Ltd 15%

* a wholly owned subsidiary of Origin Energy Limited

Block 121 map

Contacts

Media
Anneliis Allen
Senior Manager, External Affairs
Ph: +61 2 8345 5119
Mobile: +61 428 967 166
Investors
Peter Rice
General Manager, Capital Markets
Ph: +61 2 8345 5308
Mobile: +61 417 230 306