Tethys Petroleum Updates Kazakhstan Operations
Tethys Petroleum in its Kazakhstan operational update has said that AKD08 (Doto) well has encountered high levels of gas while drilling in the shallower levels at approximately 600 metres. The well has currently reached a depth of 1,368 metres.
The Doto well, located in the south west part of the country, is expected to take approximately 70 days in total to drill to a planned total depth of 3,500 metres.
Gas shows together with the logs indicate a potential gas discovery at the Tasaran stratigraphic level as previously demonstrated to be commercial on test in the nearby AKK14 and AKK15 wells.
It is expected that a gas appraisal well could now be incorporated into the forward shallow gas drilling program to test this accumulation, the company said.
The AKD09 (Dexa) exploration well is planned to spud on October 26th, 2013. The well is located to the North-West of the producing Doris field and is designed to target Lower Cretaceous channel sandstone sequences similar to the current major producing unit in the Doris field. It is forecast to take approximately 45 - 50 days to drill to a planned total depth of 2,400 metres.
The KBD01 (Kalypso) comprehensive testing programme initially on the Permo-Carboniferous interval will commence in early December. Currently the well is undergoing operations to conduct a cement job over the 7’ liner section prior to the main testing programme. The testing programme will involve initial perforation and potentially acidisation followed by fracture stimulation of the carbonate interval approximately 4,100 meters below the surface and will take up to one month to complete. Electric logs run over this section indicated more than 100 metres of gross potential hydrocarbon bearing zones in what are interpreted to be shelf limestones with hydrocarbon shows also being noted whilst drilling.
Shallow Gas Drilling Program
The shallow gas exploration program is expected to commence in early November and the wells are expected to be drilled consecutively on a number of additional prospects and leads which have been identified based on seismic data.
These are relatively low risk targets and of the last 13 shallow exploration wells previously drilled by Tethys in the Akkulka Block, 11 tested commercial gas.
The planned gas exploration wells are typically 600-800 meters measured depth and will take up to three weeks each to drill. Currently these are located mainly in the central and south-eastern part of the Akkulka Exploration Contract and relatively close to existing gas infrastructure and the Akkulka Production Contract area.
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