Introduction
According to Comet Ridge (2023), the project located in the Denison Trough of the Bowen Basin, has shallow depths of 180 - 400 meters. Below is a general map of the Mahalo Gas Project.
The preferred well design are laterals for enhanced productivity. An example in-seam well is shown below. In this example, the vertical intercept well, Mahalo North 1 (314 m total Depth), is the primary production well intersecting 9 m of coal.
Below is the schematic of the pilot production laterals drilled in the Mahalo Gas hub, along the high productivity fairway. These are in-seam well completions, with primary production form Mahalo 6, Mira 2, and Mahalo North 1.
As a note, Comet Ridge stated that reservoir gas was almost pure methane with less than 2% CO2 (sales gas specification)
References
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Tor McCaul, Bell Potter, “Unearthed”, Comet Ridge Investor Presentation, 9 February 2023.
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Comet Ridge Investor Presentation, 8 September 2022.
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Comet Ridge, Mira Field Work Successfully Completed Below Budget, Comet Ridge Limited, ASX Announcement, 2017
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Michael P. Scott Raymond Johnson Jr, Janny Spilsbury-Schakel / Garnett, Andrew, Technology review of the Northern Bowen and Galilee basins, 2023, APPEA Journa