Carnarvon Petroleum Ltd (ASX:CVN) continues to progress the Roc South-1 exploration well offshore WA with the Noble Tom Prosser jack-up rig having drilled down to approximately 4,113 metres Measured Depth (MD).
After completing the 12-1/4” section, Carnarvon and its partner within permit WA-437-P, Santos Ltd (ASX:STO), are cleaning the hole in preparation to set the 13-3/8” casing.
Upon setting and cementing the casing, the JV will drill ahead in 8-1/2” hole to a planned section depth of about 4,500 metres MD.
The Caley and Baxter members are anticipated to be encountered in the 8-1/2” hole section.
Wireline logs will then be run over the Caley and Baxter members before setting a 7” liner and drilling ahead to the deeper objectives.
Roc South is in WA-437-P in which Carnarvon holds a 20% interest and the well follows the recently completed appraisal well at Dorado-2.
Dorado-2 has confirmed the major oil and gas discovery made at the Dorado-1 site last year and highlights the potential for Carnarvon to transform into a significant producer.
Roc South-1 is an exploration well about 15 kilometres northeast of Dorado-1 with primary objectives in the Caley, Baxter, Crespin and Milne members of the Lower Keraudren Formation.
This well will test the Caley play in a sub-crop trapping geometry that is analogous to the Dorado field.
Dorado-1 discovered hydrocarbon bearing reservoirs in these members of the same formation.
The Baxter, Crespin and Milne objectives are also set up by a sub-crop trapping geometry.
Roc South-1 is around 160 kilometres NNE of Port Hedland in the Bedout Sub-basin and drilling is in water depth of about 95 metres.
Following Roc South-1, the rig is scheduled to drill the Dorado-3 appraisal well.