Empire as operator of the EP 389 Joint Venture has advised the commencement of the surveying of the 80km2 3D Seismic Survey to be recorded as the first helicopter borne survey of its size in the Onshore Perth Basin, Western Australia. The commencement of recording is planned for April, 2013 upon the surveying being completed and the last approvals received from the State Government Department of Mines and Petroleum.
Terrex Seismic Australia has been chosen as the seismic contractor following a tender process and will supply the recording equipment, geophones, the seismic crew and the subcontractors to record the seismic data. Terrex surveyors will mark out and peg or paint the locations of some 8000 source and receiver stations. They are currently on site.
The service company providing two pilots and two helicopters is Precision Helicopters. The 12 heliportable drills and crew are being supplied by Webster Drilling. Both of these service companies are subcontracted to Terrex Seismic. Empire will supply the management, geophysicists, land access people and the fencing contractor. Onsite offices for Terrex, the Heli team drilling personnel and Empire’s personnel are all located near the helipad, within land owned by Empire and the other participants in the EP 389 Joint Venture.
A new field camp for 35 personnel is being installed 200 metres south-west of the Red Gully Processing Facility within Exploration Permit EP 389, 20kms north of the town of Gingin. All the necessary access to water and effluent disposal has been installed.
The Survey is to be recorded over the Gingin Gasfield Area delineated by discovery wells Gingin-1 and Gingin-2 (drilled by WAPET in 1964 and 1965) together with a number of modern 160 fold 2D seismic surveys recorded by Empire. These seismic surveys commenced in 1998 and total some 444 line kilometres. The 45kms2 Gingin West 3D seismic survey was recorded in 2008.
Explicit high definition information of the subsurface geology of the Gingin Gasfield Area and the structures mapped there to date are designed to be provided by the Wannamal 3D Seismic Survey. These include Gingin-4 and Deep, Gingin-5 and Deep and also Wannamal-1 and Deep. The Wannamal and Deep prospect was mapped from the Gingin West 3D Seismic recorded in 2009/10 resulting in the Gingin West-1 and Red Gully-1 discoveries.
The Gingin Gasfield Prospects (Gingin-4, Gingin-5, Wannamal-1 and their Deeps, Gingin West Deep [Bootine Deep]) have estimated potential recoverable gas and condensate of 205 billion cubic feet of gas and 9.2 million barrels of condensate. New discoveries drilled in prospects defined by this Survey can be treated at the Red Gully Processing Facility. This Facility is the first dedicated gas and condensate treatment plant built in the Perth Basin.
As part of the Wannamal 3D Survey, the Company conducted detailed botanic surveys and also dieback botanical surveys (phytophthoran; a disease destroying native plants in Western Australia). No dieback disease was encountered in the Survey Area. The Company has, and will continue to comply with strict environmental, health and safety approvals, which has been the subject of 18 months’ work.
This Heliseismic method has been adopted by Empire to reduce the environmental “footprint” on the land whilst most importantly providing for excellence in the seismic recording parameters and consequent data quality.
Empire has been operating in the Gingin district since 1996 and for some 19 years has recorded numerous seismic surveys and drilled a number of petroleum exploration wells, all with minimal impact on the environment.
The Company looks forward to providing more details on this exciting and new Wannamal 3D Heliseismic Survey.