The West Erregulla tight gas field was discovered in 1990. It is located in Western Australia's North Perth Basin within Exploration Permit EP 469 (formerly EP 25/07-08). It is 50km south east of Dongara and approximately 20km from both the Dampier-Bunbury and Parmelia pipelines, through which gas will be exported to market following successful development of the field.

West Erregulla is the first of several seismically mapped structures of interest to be targeted within EP 469. It is independently assessed to contain significant volumes of gas in place and Warrego's appraisal and development plan will deliver an appraisal well in 2012 and commercial gas in 2014.

Warrego is the sole holder of EP 469.

The permit lies within the Native Title Claim area of the Amangu people. Warrego believes that the successful development of West Erregulla can only be achieved in co-operation with the Amangu, and the business looks forward to an enduring and mutually beneficial relationship with the Amangu community over time.