A hydrocarbon gas source has been analysed and confirmed in the offshore Sydney Basin. The confirmation of a hydrocarbon based gas analysis was released at the Petroleum Exploration Society of Australia (PESA) "Eastern Australasian Basins Symposium" 14-17 September 2008.
A hydrocarbon gas source has been analysed and confirmed in the offshore Sydney Basin. The confirmation of a hydrocarbon based gas analysis was released at the Petroleum Exploration Society of Australia (PESA) "Eastern Australasian Basins Symposium" 14-17 September 2008.
The confirmation of this type of hydrocarbon gas seepage is an extremely significant development for MEC Resources investee Advent Energy, which holds an interest in the offshore Sydney Basin Petroleum Exploration Permit PEP 11. Active seeps of the nature reported are considered by experts in this field to occur in basins now actively generating hydrocarbons and or that contain excellent migration pathways. The methane gas has been reported by independent testing to comprise a mixture of thermogenic and biogenic gas.
Hydrocarbon gas analysis has been confirmed to be;
Methane(CH4) 90.69%
Oxygen(O2) 1.58%
Carbon Dioxide (CO2 ) 4.12%
Nitrogen(N2) 3.7%
The gas seepage has been observed from repeated sea floor positions in an area off the coast of New South Wales and along the mainland margin of the PEP11 Permit. The gas is believed by Advent Energy to be sourced from areas within the PEP11 permit area.
The area where the gas has been identified is in the same area where oil and gas seeps have been recorded from Long Reef to Catherine Hill Bay, giving rise to periodic oil slicks occurrences along the coast , especially in the Cape Three points, Terrigal area. Visible gas seeps have been audio-visually recorded, and are available to view by clicking here. You may also view the full announcement by clicking here Confirmation Hydrocarbon gas in Offshore Sydney Basin 12.11.08.pdf



