Australia's Comet Ridge said Wednesday that it will start constructing facilities to develop the first coalbed methane (CBM) production pilot in the Mahalo area after confirming that all four wells in the Bowen Basin had intersected good continuity, thickness and permeability of the main reservoir section.
The facilities are expected to be commissioned late this year.
This will be followed by a further four core holes to extend delineation of gas in the ATP 337P Mahalo Block.
The pilot production project is aimed at demonstrating commercial gas flows from the Block with the intention of achieving an early initial reserves certification.
Based on Rigzone's calculations, the program was completed four days ahead of its original schedule. Mahalo 5 – the final well that was drilled in the program – intersected 23 feet (7 meters) of coal in the main Castor-Pollux seam. This follows the Mahalo 6 and Mahalo 4 wells, which intersected 25 feet (7.5 meters) and 23 feet (7 meters) of Castor-Pollux coal seam respectively.
"The joint venture was extremely pleased with the Mahalo drilling results and also the speed, efficiency and safety of the drilling operation," said Comet Ridge's managing director Tor McCaul in a statement. "The drilling of the first well – Mahalo 3 – was a bit slower as there was some rainfall and that made access to the site more difficult. But there was no rain on Mahalo 6, 4 and 5, so the drilling of those wells went very fast," McCaul explained to Rigzone on Wednesday.
In an interview with Rigzone on July 23, 2012, McCaul had said that he was expecting the program to be completed in the first week of August.
The rig, Ensign 62, which is used in the drilling of Mahalo 3 to 6 was released on Wednesday.
Comet Ridge's ATP 337P Mahalo asset is located in the Denison Trough area of Queensland's Bowen Basin near Rolleston, and covers an area of 382 square miles (989 square kilometers).
Comet Ridge holds a 35 percent stake in the permit, while Santos and APLNG each hold a 30 percent stake. Stanwell Corporation holds the remaining 5 percent stake.
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