Zim Now Writer
Invictus Energy Limited says it may deepen Mukuyu-1 drilling following positive exploration results so far.
“We have had further encouraging signs from the Mukuyu-1 well since drilling recommenced with multiple zones encountering elevated gas shows and fluorescence in our Upper Angwa primary target,” said managing director Scott Macmillan in an update statement released today, Monday November 14.
Invictus may elect to deepen the Mukuyu-1 well to test the deeper potential of the remaining Upper Angwa and Lower Angwa formations following the completion of wireline logging.
According to the update, drilling recommenced in the 8½” hole section and the well reached 3,618 metres Measured Depth where the preliminary Total Depth was called.
Invictus says comprehensive wireline logging evaluation suite is planned to be acquired across the entire 8½” hole section to provide detailed geological information in order to confirm the presence of moveable hydrocarbons.
Drilling suffered a setback a few weeks ago after problems with the mud gas chromatograph system which the company said was a standard operational hitch.
Elevated mud gas peaks (up to 135 times above background gas baseline while drilling through a depth of 3,171 mMD have been observed with marked increases from C1 to C5 compounds (methane, ethane, propane, butanes and pentanes).
“The evidence of hydrocarbon charge throughout the Upper Angwa reservoir intervals provides further validation of our subsurface model and the presence of a conventional working hydrocarbon system in the Cabora Bassa Basin,” says Macmillan.
Last week Invictus stock prices jumped as the company announced good prospects in “one of the last untested large frontier rift basins in onshore Africa”.
“We have continued to observe elevated gas shows and fluorescence through multiple reservoir intervals in the Upper Angwa until TD was called, and we will now acquire the necessary wireline data whilst the borehole conditions are still conducive in order to evaluate the zones of interest observed to date,” Macmillan said.
Invictus had previously indicated intent to drill to 3,500 mMD.
“The Company may elect to deepen the well post the wireline logging of the current hole section in order to test the deeper potential in the remaining Upper Angwa and Lower Angwa formation.
“The planned comprehensive wireline logging programme including formation pressure and fluid sampling, sidewall cores and checkshot surveys will be run with the aim of confirming the presence of moveable hydrocarbons in multiple zones,” said Macmillan.
Multiple additional zones with elevated mud gas and fluorescence were also encountered throughout the intersected Upper Angwa reservoir intervals which also have associated drilling breaks.
Wireline logging and evaluation is anticipated to take 3-6 days to complete depending on logging conditions.
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