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

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 |