Comet Ridge successfully drills Humboldt South 1 Corehole
Thursday, Sep 07, 2017
  • Well objectives fully achieved
  • 8.4 metres of net coal with permeability measured and gas bubbling from core
  • Well drilled safely and within approved JV budget
  • Mira under-reamed pilot wells now online and pumping operations progressing well

Comet Ridge Limited is pleased to announce the successful drilling of the Humboldt South 1 Corehole. All programme objectives were achieved and the well was drilled safely and within the approved joint venture budget. The drilling rig was released from the well at 2359 hrs on Wednesday 6 September 2017.

Humboldt South 1 is located approximately 240 km west of Gladstone and 6 km to the east north-east of the Mira pilot scheme. The well was cored extensively through the main coal intervals and reached a total depth of 326 metres. Comet Ridge Managing Director, Tor McCaul, said approximately 8.4 metres of net coal was intersected from the well which is consistent with the net coal thickness intersected further to the west - southwest at Mira. Coal recovered from the well showed gas bubbling from the core. A total of nine coal samples were placed in desorption canisters for further laboratory analysis relating to gas content and other properties. Mr McCaul also said that he was pleased with the outcome of flow tests conducted across a number of coals in the well which indicated permeability across the main target reservoir seam and also across two shallower seams in the top of the section.

The well has now been plugged and abandoned as its primary purpose was to gather key data on net coal thickness, gas content and reservoir productivity. The upcoming drilling focus will now move to the Mira 6 horizontal pilot well where planning is advanced with spudding expected to occur during October. The current production focus will remain at the Mira pilot and the performance of the three recently underreamed Mira wells.

Mr McCaul said that the three under-reamed Mira pilot wells (Mira 3, 4 & 5) have now all successfully been brought back into production following the workovers in August. Pumps in these wells are all performing to expectations and daily flow measurements and pressures are being recorded. The Company expects to provide a performance update on flow and pump speed increases over the next several weeks as flow data is gathered and analysed.

Comet Ridge holds 40% equity in the Mahalo Block with Santos and APLNG each holding 30% equity.

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