Chevron drills appraisal well at Orthus field

Chevron Australia made a second natural gas discovery at its previous Orthus find in retention lease WA-24-R about 100 km northwest of Barrow Island.

Rick Wilkinson
OGJ Correspondent

MELBOURNE, Feb. 10 -- Chevron Australia made a second natural gas discovery at its previous Orthus find in retention lease WA-24-R about 100 km northwest of Barrow Island.

The appraisal well was drilled to a total depth of 4,297 m and intersected 74 m of net gas pay. Of this, 31 m was encountered in a deeper, previously unexplored target horizon in the Orthus field.

This is the tenth discovery for Chevron off Australia in the last 18 months and again it helps underpin potential expansion for the $42 billion (Aus.) Gorgon-Jansz LNG project.

Chevron holds 50% of WA-25-R with ExxonMobil Corp. holding 25%, Royal Dutch Shell PLC 12.5%, and BHP Billiton 12.5%.

The Gorgon-Jansz project currently stands at three trains each with capacity of 5 million tonnes/year. The plant has been designed with enough space to fit a total of five trains.

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