The Mahalo North 2 dual lateral well is located on the high-quality fairway in the southern part of ATP 2048, approximately 3.7km to the north of the existing Mahalo Pilot Scheme, and 450m to the west-southwest of the recently drilled
The Mahalo North 2 dual lateral well incorporates two separate, but connected, lateral wells drilled over a long distance, to allow a pathway for water and gas to flow from the natural fractures inside the coal reservoir and into the vertical well (
This second lateral branched off prior to the point where the first lateral intersected the Mahalo North 1 vertical well, steering inside the coal seam in a north-easterly direction. Unlike the first lateral, this second lateral does not intersect the vertical well and simply branched off from the first lateral to create a large, connected lateral well network across this high-quality coal reservoir.
When put into production, water and gas entering this second lateral from the reservoir will move along the well to the junction of the two laterals, and will then flow back towards the vertical well and to surface. High drilling fluid losses were experienced whilst drilling this second lateral section, above what was experienced when drilling the first lateral.
This would indicate that both lateral wellbore sections have encountered an established natural fracture network in the coal reservoir, which bodes well for future production performance.
In a similar fashion to the first lateral, the second lateral had a 3 1 /2 ' diameter production liner run and installed to provide a conduit for long term gas and water production. This second lateral ultimately reached a total (along hole) distance of 1152m. The rig was released at 1800 hrs on Friday 12 November and will be demobilised over this week.
Comet Ridge Managing Director,
Contact:
Tel: +61 7 3221 3661
Email: tor.mccaul@cometridge.com.au
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