Panax Geothermal
Panax Geothermal (ASX: PAX)has near term geothermal projects in Indonesia and is also pioneering conventional geothermal technology in Australia along with projects in India.
Panax Geothermal to continue Salamander-1 clean-up flow tests
Tuesday, May 18, 2010
Panax Geothermal (ASX: PAX) has reported that clean-up flow tests at the Salamander-1 well in South Australia are continuing intermittently.
Preliminary results of downhole logging during well flow have indicated that flow rates to date may be negatively affected by “filter cake”, being remnants of drill mud partially blocking off the connection between the reservoir zones and the well bore.
The filter cake was designed to be removed as part of the well bore clean-up before rig release. The company has now been advised to repeat this treatment, i.e. using a weak acid (15% acetic = vinegar) to dissolve any remnant calcium carbonate, a component of the drilling mud.
The company said the recently observed sudden increase in the bottom hole temperature of Salamander-1, from 156°C to 171.4°C during “surging” of the well, is likely to be an example of a sudden local breakthrough between reservoir rocks and the well bore near the bottom of the well.
Bertus de Graaf, managing director, said this repeat well bore clean-up programme is scheduled to commence later this month and will not delay the well productivity tests, scheduled for June, 2010.
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