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Santos Ltd, as Operator for the Patchawarra Southwest Block, announces a new pool gas discovery in the South Australian section of the Cooper/Eromanga Basins.

The exploration well, Nephrite South 1 flowed gas at 105,500 cubic metres per day (3.725 million cubic feet per day) plus minor condensate, from reservoir sands in the Early Permian Patchawarra Formation over the interval 2784-2808 m. The test was run through a 13mm (0.5″) surface choke.

Nephrite South 1 follows on from the discovery of the Nephrite 1 gas field in January 1997.

Nephrite South 1 well is located 3.5 km south of the Nephrite field and approximately 55km northwest of the Moomba Gas Plant.

The well will drill ahead through further potential pay zones to a total depth of 3249m.

The interest holders in the Patchawarra Southwest Block are:

  • Santos Group 59.75%
  • Delhi Petroleum Pty Ltd 20.21%
  • Boral Energy Resources Limited 13.19%
  • Crusader Resources NL 4.75%
  • Basin Oil NL 2.10%