Drillsearch, Santos Discover Wet Gas in Cooper Basin

Drillsearch and Santos have discovered wet gas on the Western Cooper Wet Gas Fairway of the Cooper Basin.

The Varanus South-1 well in PEL 513 (Drillsearch 40% and Santos 60% and operator) is the first well to be drilled by Santos and Drillsearch under the joint venture between the companies announced in July 2013.  

Varanus South-1 was drilled to a total depth of 3,154 metres as a near-field exploration well. Drillsearch’s preliminary interpretation of wireline logs has confirmed an aggregate best estimate of 18 metres of net gas pay over a gross interval of 365 metres in the Patchawarra Formation and an additional 9 metres of net hydrocarbon pay over a gross interval of 37 metres in the Tirrawarra Formation, which was considered a secondary target.

As a result, the well has been cased and suspended as a future wet gas producer. Interpretation of the well results is continuing, Drillsearch announced.  

Varanus South-1 is located 2.1km southeast of the Varanus field, which produces wet gas from the Patchawarra Formation, and 1.8km north of the Cooba field and 9.8km southwest of the Tirrawarra field, which both produce wet gas from the Patchawarra Formation and oil from the Tirrawarra Formation. The Varanus, Cooba and Tirrawarra fields are owned by the South Australian Cooper Basin Joint Venture (SACBJV).  

Following casing and suspension of Varanus South-1, the rig will move to drill the Yarowinnie South-1 well, which is located 7.0km southwest of Varanus South-1 and 5.4km south of the SACBJV’s Andree-Leleptian gas field.