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Waitsia-4 well drilling ahead

August 7, 2017

AWE said the Waitsia-4 appraisal well in Western Australia’s onshore Perth basin has intersected the first of the primary targets, the Kingia formation, and the well is drilling ahead to the second primary target, the High Cliff sandstone.

The well was at 3486m measured depth below rotary table (MDRT) and drilling ahead in 216mm hole to total depth, following the successful installation of 244mm intermediate casing at 3054m MDRT.

Good gas shows were observed in the Kingia and wireline logs will be acquired to confirm reservoir quality. Waitsia-4 was spudded on 10 July and is forecast to take approximately five weeks in total to complete. The well will be directionally drilled to a planned maximum total depth of 3834 m MDRT.

The well is designed to appraise the gas potential in the eastern extension of the Waitsia field, with primary targets being conventional reservoirs in the Kingia and High Cliff Sandstones. The well will be logged and, if the results are positive, the well will be completed as a production well and a flow test may be performed.

Waitsia-4 is the last appraisal well planned for the Waitsia field in 2017. It is located approximately 18.5km south-east of Dongara, Western Australia, and 3.3km north-northeast of Waitsia-3. The approved work program for the Waitsia-4 appraisal well does not include hydraulic fracture stimulation. The project is a 50:50 joint venture between operator AWE, and Origin Energy. 



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