The Browse Basin is one of Australia's most hydrocarbon-rich offshore basins. It has estimated reserves* of 13.6 MMbbl (2.2 Gl) of oil, 29.4 Tcf (832.0 Bcm) of gas, 438.2 MMbbl (69.7 Gl) of LPG and 629.0 MMbbl (100.0 Gl) of condensate as at January 2006 (Geoscience Australia , 2008).
During late 2006 and 2007 several significant wells were drilled; Brecknock 3, Torosa 1, 2 and 3, Prelude 1, 1A, Crux 2 ST1, Dinichthys North 1, Tocatta 1 and Fossetmaker 1. Brecknock 3 was drilled to appraise Early to Middle Jurassic reservoir sandstones that were encountered in Brecknock 1 and 2 and the well intersected a 48.5 m gross gas column in the Plover Formation. A second hydrocarbon bearing zone was intersected in the Late Cretaceous with an 8.7 m gross gas column (Woodside investor update, November 2006). Details and results of the other wells are not available at the time of publication. The Torosa and Calliance fields appraisal continued in the second half of 2007 with further 3D seismic acquisition (DOIR, 2007).
| Field Data | Liquids MMbbls* | Gas Tcf | Gas Mmboe1 | Date | Source |
|---|---|---|---|---|---|
| Argus | 6.80 | 0.60 | 102.00 | Aug-04 | DPIFM |
| Brecknock | 109.44 | 5.30 | 901.01 | Dec-06 | DoIR |
| Calliance (Brecknock S) | 86.80 | 3.97 | 674.91 | Dec-06 | DoIR |
| Crux | 38.90 | 1.40 | 238.00 | Oct-04 | DPIFM |
| Ichthys Brewster | 276.75 | 6.99 | 1188.69 | Dec-06 | DoIR |
| Ichthys Plover | 35.22 | 2.51 | 426.25 | Dec-06 | DoIR |
| Torosa (Scott Reef) | 121.02 | 11.50 | 1954.98 | Dec-06 | DoIR |