Project Profile
Value: US$1.1 billion
Location: Thylacine-Tasmanian permit T/30P,70km south of Port Campbell and Geographe, in Victorian permit Vic/P43
Start-up Year: September 2007
Reserves: 950 billion ft³ of raw gas, 885PJ of sales gas, 12.2 million barrels of condensate and 1.7 million tonnes of LPG.
The largest development in the Otway Basin area is the so-called Otway Gas Project - the US$1.1 billion development of Thylacine and Geographe.
Thylacine lies in the Tasmanian permit T/30P, about 70km south of Port Campbell. Geographe, in Victorian permit Vic/P43, will be connected to the main offshore pipeline in a later development phase. The field was discovered following the 1999 Investigator 3D seismic programme. The Thylacine-1 exploration well drilled in May 2001 and discovered gas in a 281m gross gas column. In August 2001, the company drilled the Thylacine-2 appraisal well, which found a 230m gross gas column. Meanwhile, in May/June 2001, Woodside spudded the Geographe-1 exploration well and discovered gas in a 240m gross gas column. Over the life of the project, the Thylacine and Geographe gas fields are expected to supply 950 billion ft³ of raw gas, 885PJ of sales gas, 12.2 million barrels of condensate and 1.7 million tonnes of LPG. The Otway Gas Project will initially produce about 60PJ of sales gas a year. Production began in September 2007.
Technip was awarded a US$250 million contract for the engineering, procurement, installation and construction of the onshore gas processing plant and onshore pipeline, and the offshore platform facilities. The offshore pipelay and subsea tie-in has been carried out by Allseas. The horizontal directional drilling shore-crossing contract has been awarded to DrillTec. Maersk Contractors won the contract for drilling at least four production wells using the Maersk Guardian jack-up drilling rig.
Operators:
Origin Energy Resources Ltd: Operator with 67.23% interest
Benaris International Pty Ltd: 27.77% interest
Toyota Tsusho Gas E&P Otway Limited: 5.0% interest
Contractors:
Allseas: Offshore pipelay and subsea tie-in
DrillTec: Horizontal directional drilling shore-crossing contract
Maersk Contractors: Drilling four production wells using the Maersk Guardian jack-up drilling rig
Technip: Engineering, procurement, installation and construction of the onshore gas processing plant and onshore pipeline, and the offshore platform facilities