First steps taken on Gunnedah gas project

NSW continues its march towards securing an independent gas resource with the Gunnedah Gas Project completing its Bohena South-1C (core-hole) well and conducting two drillstem tests within the target Maules Creek Formation coal seams.
First steps taken on Gunnedah gas project First steps taken on Gunnedah gas project First steps taken on Gunnedah gas project First steps taken on Gunnedah gas project First steps taken on Gunnedah gas project

Initially Bohena South-1C intersected the secondary target Black Jack Formation which contained a 5.2m thick Hoskisson seam with a further 7.6m of coal in the upper seams within a total interval of 36m.

The main coal seams of the primary target Maules Creek Formation were then intercepted revealing a 10.35m thick Bohena seam and a further 5.8m of upper coal seams within a total interval of 64m. The coals are highly gaseous and permeable and the gas composition is mainly methane.

A drillstem test of the Bohena seam resulted in a measured permeability of 11md which is not only an excellent result but in line with the high permeabilities measured in Bohena-3 and Bibblewindi-1, both of which lie within the Bohena Project Area.

Bohena South-1C is located about 3.5km south of the previously drilled Bohena pod of eight coal bed methane (CBM) wells and also 7.1km north of the previously drilled Bibblewindi-1 well.

After analysing the data from this well and the soon to be completed Bohena-4L horizontal well, a decision will be made as whether to drill and place into production a new Bohena South vertical, fracture stimulated coal seam gas well, or to drill a new horizontal well from the Bohena South-1C location.

The Bohena Project Area contains up to 3,700PJ (3.7 trillion cubic feet) gas in place within both the Late Permian Black Jack Formation and the Early Permian Maules Creek Formation coal seams. The aim of this drilling program is to prove sufficient proved and probable (1P and 2P) gas reserves to enter into gas sales contracts by completing a production pilot.

The project is managed by Eastern Star Gas and is owned by the Gunnedah Gas Project Joint

Venture comprising Eastern Star Gas 15% but acquiring up to 32.5%, Hillgrove Resources 15% but acquiring up to 32.5% and Gastar Exploration Limited 70% but reducing to 35%.

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