Origin Makes Discovery in Western Australia

Production testing confirms the discovery of a large gas pool in the Perth Basin in Western Australia. Well testing is in progress on the exploration well Beharra Springs North-1, drilled in July /August 2001. The well was perforated over the interval 3370.5m-3387.0m and 3392.6m-3395.2m within the Wagina Formation and an initial cleanup flow has been established. During the cleanup the well flowed gas to surface at a stabilized wellhead flowing pressure of 2158 psig across a 3/4" choke, at an estimated flow rate of 30 million cubic feet per day. This flow is comparable with that recorded in nearby Beharra Springs gas field wells. Following completion of the testing program the well will be tied into the Beharra Springs gas processing facility.

Beharra Springs North 1 is located in Production License L11 in the onshore Perth Basin, Western Australia. The well is located on a previously undrilled structural closure, approximately 3.5km north of the Beharra Springs gas field. Participants in L11 and Beharra Springs North 1 are Origin Energy as operator with a 67% interest and AWE with a 33% interest.