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AWE commences Waitsia-3 coring operations

Written by  AOG Staff Monday, 12 June 2017 23:52
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AWE, the operator of production licenses L1/L2 in the northern Perth basin, Western Australia, said the Waitsia-3 appraisal well was at 3251m Measured Depth below Rotary Table (MDRT) and coring operations were in progress.

Preliminary analysis shows the target Kingia formation was intersected on depth prognosis at 3211m and two sections of core have been cut: Core #1 was cut from 3206m to 3232m MDRT, and Core #2 was cut from 3232m to 3251m MDRT.

Preparations are underway to cut a third core section. All cores will be sent for analysis. On completion of coring operations, the well will be drilled to a total depth of 3706m before acquiring a full suite of wireline logs.

Waitsia-3 was spudded on 19 May 2017 and is forecast to take approximately seven weeks in total to complete. The well is designed to appraise the gas potential in the southern extension of the Waitsia field, with primary targets being conventional reservoirs in the Kingia and High Cliff sandstones and the secondary target being the sandstone reservoirs of the Irwin River Coal Measures.

Waitsia-3 is the first of a two-well appraisal drilling program planned for the Waitsia field in 2017. If the results are positive, the well will be completed as a production well and a flow test may be performed.

The well is located approximately 19.8km east-south-east of Dongara, Western Australia, and 10.8km south of Waitsia-1. The approved work program for the Waitsia-3 appraisal well does not include hydraulic fracture stimulation.

Last week (7 June), AWE and its joint venture partner Origin Energy agreed to commence the design competition phase of front-end engineering design (FEED) for Stage 2 of the Waitsia gas project. The design competition will include a gas plant capable of processing 100 TJ/d, CO2 extraction, collection hubs, and flow lines.

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