Buffalo Oil Field

Timor Sea Oil and Gas Fields

Click on map to enlarge


  • The Buffalo field is located in the Timor Sea, in production licences WA-19L and WA-21L approximately 560 kilometres north-west of Darwin.


  • As at April 2001, title is held by:
Nexen Petroleum Australia Pty Ltd100.0%
  • On 28 November 2000, BHP announced it had agreed to sell its interest in the field to InterOil Corporation.
  • However, Nexen Petroleum recently exercised its pre-emptive rights to purchase BHP's interests in the field, which has given Nexen 100% ownership of the field.
  • The field is small, with original oil reserves most likely to be 19 million barrels (3 million cubic metres).


  • BHP Petroleum Pty Ltd discovered the field in late 1996 and announced in September 1998 that the field would be developed.
  • The production licence was granted in September 1999 with first oil production commencing in December 1999.


  • First oil production commenced 29 December 1999.
  • The field has reached a net peak production of 20,000 barrels of oil per day.
  • The field produced 1.3 million barrels (205,692 cubic metres) in the first 29 days of production.
  • As at 31 December 2000, remaining net proven plus probable reserves were 1.78GL of oil.
  • Project life is expected to be about three years.


  • Expected gross capital cost is A$150 million (US$88 million).

Current at 12/12/01

Director of Energy
Department of Business, Industry 
& Resource Development
GPO Box 2901

Ph: 61 8 8999 5460
Fax: 61 8 8999 5530
email: otd.info@nt.gov.au