KEYFACT Energy
In October 2019, Cooper Energy, a 30% interest holder in PEL 494 (operated by Beach Energy 70% interest) in the Penola Trough, onshore Otway Basin, South Australia, advised that the Dombey-1DW1 exploration well encountered gas in the primary target Pretty Hill Formation. A gross gas column of 44.5 metres, with an estimated net pay thickness of 25 metres, has been identified with an interpreted gas-water contact in the reservoir. Gas sample analysis indicates a low inert content.
Dombey-1DW1 has been drilled to 3,384 metres MDRT1 and formation evaluation is ongoing. Further testing and analysis are required to establish commerciality however this initial data is encouraging. Dombey-1 is being drilled with the assistance of a $6.9 million PACE grant from the South Australian government.
Dombey-1 Interim results summary
| Discovery formation: | Pretty Hill Formation |
| Reservoir lithology: | Sandstone |
| Top reservoir depth: | 1,935 metres MDRT1 (1,795 metres TVDSS2 ) |
| Estimated net pay thickness: | 25 metres |
| Depth of zones tested: | Pressure testing while drilling and wireline pressure testing and fluid sampling over the interval 1,923 – 3,284 metres MDRT1 |
| Completed interval: | Not applicable |
| Hydrocarbon phases: | Gas with a low inert (non-hydrocarbon) content |
(1) MDRT = Measured Depth Rotary Table
(2)TVDSS = True Vertical Depth Subsea