AWE Spuds Perth Basin's Waitsia-1 Appraisal Well in Western Australia

AWE Limited, the Operator of Permits L1/L2 in the Perth Basin, Western Australia, reported Friday that the Waitsia-1 appraisal well commenced drilling operations at 11:00 hours (11:00 am) AWST on Thursday, May 14.

As at 06:00 hours (6.00am) AWST today, the well was at 1,387 feet (423 meters) Measured Depth below Rotary Table (MDRT) in a 17.5 inch hole. The well will be drilled to a planned section depth of 1,870 feet (570 meters) MDRT before installation of the 13.375 inch surface casing.

The Waitsia-1 well will be drilled vertically to a planned total depth of 13,287 feet (4,050 meters) MDRT and is forecast to take approximately six weeks to complete. The well is designed to further test the gas potential of the Waitsia Field, comprising primary targets in the deep conventional formations in the Kingia and High Cliff Sandstones.

The well will be logged and core samples will be collected and sent for analysis. Secondary targets in the shallower Dongara and Wagina tight sandstone formations, the Carynginia Shale and Irwin River Coal Measures will be intersected prior to reaching the primary targets.

If the results are positive, AWE may undertake a flow test of the Waitsia-1 well and the well may be completed as a production well for a potential future field development. The approved work program for the Waitsia-1 appraisal well does not include hydraulic fracture stimulation.

The Waitsia-1 appraisal well is located on agricultural land approximately 10.6 miles (17 kilometers) east of Dongara, Western Australia, and 6.2 miles (10 kilometers) from the operating Dongara gas plant. The well is the second of a three well drilling program planned for the Perth Basin in 2015. It will be followed by the Waitsia-2 appraisal well in the second half of the 2015 calendar year.

The Joint Venture partners in L1/L2 are:

  • AWE Limited (via subsidiaries) (Operator) - 50.0 percent
  • Origin Energy Resources Limited - 50.0 percent

About the Waitsia gas field

The Waitsia discovery was announced on Sept. 2, 2014 while drilling the Senecio-3 well and has the potential to be the largest onshore conventional gas discovery in Western Australia in the last 50 years. AWE’s initial estimates for the Waitsia gas field comprise gross 2C Contingent Resources of 290 billion cubic feet (Bcf) in the Kingia/High Cliff Sandstone formations. In addition, AWE has also estimated gross 2C Contingent Resources of 70 Bcf in the Senecio tight gas field and an initial estimate of 149 Bcf in the Irwin/Synaphea tight gas structures.


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