As at 6am Perth time today, the well had been drilled to 1140 metres below rotary table and the current operation is cementing the conductor.
Jacala-1 is about 200km west of Barrow Island and 100km northwest of the Enfield oil and gas field.
The well is expected to take about 18 days to reach a total depth of 2322 metres.
The WA-351-P Joint Venture comprises: BHP Billiton Petroleum (North West Shelf) Pty Ltd (operator) 55%, Tap Oil 25% and Roc Oil 20%.
