Sound Energy said it had encountered a third gas-bearing zone after reaching total depth at a new well in Morocco.
The TE-10 exploration well had already encountered gas from two target zones.
An additional 'thin bedded' net pay had been identified after reaching a total depth of 2,218m.
'Quantification of the overall net pay is underway and will require substantiation from side-wall core analysis and further wireline log evaluation,' Sound said.
A gas sample was successfully recovered from one of the pay intervals at around 1,937m depth.
'The successful retrieval of this gas sample confirms the presence of moveable hydrocarbons in the reservoir, and importantly is the first successful gas test from the Tagi sandstone in the Tendrara licence,' the company said.
Plans were now in progress to conduct a well test over the reservoir interval.
It was expected to occur during February 2019, after rig de-mobilisation and mobilisation of the necessary testing equipment.
At 8:19am: (LON:SOU) Sound Energy PLC share price was +4.19p at 25.19p