Avent Energy Limited

Carnarvon Basin (Western Australia)

Exmouth Sub-Basin of Carnarvon Basin

The Company holds an 8.3% interest in a shallow, near shore permit in the Exmouth sub-Basin region of the Carnarvon Basin, which contains the undeveloped 7 - 18 billion cubic feet Rivoli Gas Field discovery with its 11 metre gas column within the Birdrong Sandstone, a prolific hydrocarbon producer in the Carnarvon Basin.

EP 325 location
EP 325 location.

Independent Geologist's Summary Points

Only seven wells have been drilled within EP 325 and EP 433, with sub-commercial quantities of gas found at Rivoli-1 and possibly Bundegi-1. Following recent results from the Cooper-1 well, EP 433 and the western side of EP 325 are considered to have the best remaining potential.

Drilling and production infrastructure in the area is good with a deep water loading jetty and support facilities at Exmouth.

Rivoli-1 discovered gas in the Birdrong Sandstone and Bundegi-1 found gas in the Learmonth Formation, but follow-up structures have been dry. However, 40km North West of the permit the Enfield Oil Field produces at a rate of 5,430 barrels oil per day and is estimated to contain 150 MMbbl of recoverable oil. Forty kilometres to the south the Rough Range Oil Field has produced at rates of 1,600 barrels oil per day, and in July 2005 the current operator Empire Oil and Gas NL announced to the ASX the commissioning of the Rough Range 1B oil well pumping at an initial rate of 522 barrels oil per day.

Commercialisation

The town of Exmouth and the military and communications base are the nearest markets for gas-fired power generation from Rivoli and the surrounding areas, once a sizeable enough gas reserve has been established. A minimal cost, unmanned offshore wellhead platform, similar to the Harriet Joint Venture operations elsewhere in the Carnarvon Basin, would pipe the hydrocarbons to shore. The Royal Australian Navy and the permit operator have recently completed a Front End Engineering Design (FEED) study to supply fuel gas to the Harold E Holt Naval Facility in Exmouth, WA.

return to top | return to homepage