AUSTRALIAN mid-cap Senex Energy’s Martlet-1 exploration well on the western flank of the South Australian Cooper-Eromanga basin has encountered a Namur oil accumulation.

The Martlet-1 exploration is located in PEL 104, about 1.8 kilometres south east of the Warhawk-1 exploration well.

The well was designed to evaluate the oil potential of the Namur sandstone within an interpreted four-way dip-closed structure.

Senex said the EDA Rig 3 commenced drilling the well in August and reached total depth of 2,096 metres on 9 September.

“Martlet-1 encountered good oil shows in the target reservoir and subsequent evaluation of logs indicated net pay of up to 6 metres,” Senex told the Australian Securities Exchange in an announcement.

At the time of the news, Senex said the well was being cased and suspended and was expected to be placed on production in the next quarter.

Senex is the operator of the Martlet-1 exploration well with a 60 per cent stake while Beach Energy holds the remaining interest.

Beach managing director Reg Nelson said the discovery further demonstrated the strength of the company’s oil business in the Western Flank.

“The presence of oil within the Namur Sandstone confirms the extension to the north of the play that has delivered prolific fields such as Bauer, Callawonga and others further south, and provides an additional primary target to the proven Birkhead oil play in the area,” he said.

Providing an update on its 100% owned Squire-1 exploration well which was drilled to evaluate the oil potential of the Tinchoo formation, Senex said the well encountered oil shows within a poorly developed reservoir.

It was subsequently plugged and abandoned.

Meanwhile, EDA Rig 4 was moving to Hathi-1, an exploration target in PEL 514, a joint venture with Senex (80%) and Planet Gas (20%).

Senex will provide further detail on the drilling program in the September drilling report.