Gunnedah CBM project tests six wells

THE Gunnedah Basin CBM Joint Venture partners now have six wells in production testing, targeting the Late Permian Black Jack Formation and the Early Permian Maules Creek Formation.
Gunnedah CBM project tests six wells Gunnedah CBM project tests six wells Gunnedah CBM project tests six wells Gunnedah CBM project tests six wells Gunnedah CBM project tests six wells

Several wells were worked over and had pumps replaced or overhauled, the partners said yesterday.

A failed pump had been replaced at Bohena-3, while at Bohena-4L the well bore had been flushed clean of coal fines.

They said Bohena-7 was put back into production while Bohena-9 had frac sand cleaned out from the Bohena seam perforations and an 8 metre new hole had been drilled to act as a sump with the pump having been lowered down the hole.

In Bohena South-1 the pump had been lowered in the hole to a depth above the Bohena seam perforations and a new, large water storage dam had been constructed and commissioned.

A new larger pump had been placed into Bibblewindi-1 and a new, large water storage dam has been constructed and commissioned.

A newly discovered Maules Creek Fm. coal seam in Coonarah-7 has been completed with casing and suspended.

“Extremely wet weather over the Christmas/New Year period caused some operational delays, with wells having to be shut-in due to lack of access to the well sites and especially lack of water storage capacity in the existing evaporation ponds – these problems have now been overcome,” the companies said.

Interests are Eastern Star Gas Limited 25% increasing up to 32.5%, Hillgrove Resources Limited 25% increasing up to 32.5% and Gastar Exploration Limited 50% decreasing to 35%.

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