Conventional gas

June 2017 Quarter

Non Operated Development

South Australian Gas – Cooper Basin JV
Beach 20.21%, Santos 66.6% and operator, Origin 13.19%
A two-well gas development campaign was undertaken in the Dullingari and Dullingari North fields, located approximately 65 kilometres east of the Moomba processing facility.  The campaign utilised a workover rig and applied directional drilling techniques from existing wells.  The primary objective was the Patchawarra Formation, with the Toolachee and Epsilon formations providing secondary targets. 
The first well of the campaign, Dullingari-43 DW1, intersected approximately 25 metres of net gas pay across a 286 metre gross section in the Patchawarra Formation, and approximately 11 metres of net gas pay across the secondary targets.  The second well of the campaign, Dullingari-42 DW1, intersected approximately 62 metres of net gas pay in the Patchawarra Formation.  Both wells were cased and suspended as future producers.  Further review of results will be undertaken to determine if directional drilling from existing non-producing wells can be applied to other development opportunities across the Cooper Basin.
 
Non Operated Exploration and Appraisal
 
Queensland Gas
Beach 23.2%, Santos 60.06% and operator, Origin 16.74%
Lepard-3 was drilled as a standalone appraisal well on the western flank of the Lepard Field.  The well targeted the Toolachee and Patchawarra formations as primary objectives, and the Epsilon Formation as a secondary objective.  The well was cased and suspended as a future gas producer.
A six-well near-field gas exploration campaign progressed in southwest Queensland.  Gallan-1 and Hector South-1, the second and third wells of the campaign, were drilled on the southern flank of the Nappamerri Trough.  Gallan-1 targeted the Toolachee and Patchawarra formations as primary objectives and the Epsilon Formation as a secondary objective.  The well intersected insufficient commercial pay and was plugged and abandoned.  Hector South-1 targeted the Toolachee Formation as a primary objective and the Epsilon and Patchawarra formations as secondary objectives.  The well intersected approximately seven metres of net pay across a 148 metre gross section in the primary target and was cased and suspended as a future producer.
The fourth and fifth wells of the campaign, Cougar-1 and Snefru-1, are located within the Windorah Trough and follow successful exploration and infrastructure installations in the region in 2016.  Both wells targeted the Toolachee Formation as a primary objective and the Patchawarra Formation and Nappamerri Group as secondary objectives.  Cougar-1 was plugged and abandoned due to lack of commercial pay.  Snefru-1 intersected approximately three metres of net gas pay in the Toolachee Formation and approximately three metres of net gas pay across the secondary targets.  The well was cased and suspended as a future producer.
The Inca-1 DW1 project involved deepening the Inca-1 well (previously cased and suspended as an Eromanga oil producer) to appraise gas potential of the Toolachee Formation.  The well was cased and suspended as a future producer.
Interpretation of the 1,200 km2 Snowball 3D seismic survey commenced to identify prospects in Queensland for the FY18 and FY19 drilling campaigns.