The explorer said in a stock market statement that earlier this month it received its certificate of environmental compliance for the project,, adding that it anticipates formal confirmation of an extension to the first licence period in September.
It highlighted that a “considerable” amount of additional geological and geophysical has been undertaken following the receipt of 3D seismic data in April, later than originally expected, and that the findings had been forwarded to Oilfield International, the consultant creating the reserves report.
It assesses the high priority Njonji prospect area, as well as the other main prospects identified within the Thali licence.
"We are happy with the progress being made on the Njonji well,” said Jeremy Asher, Tower chief executive.
“The board would like to see the reserves report as soon as possible, but we felt that this additional work was required to inform the best decision regarding the final well location, and should also positively impact the quality of the reserves report when complete."
The additional work followed up certain findings of the seismic, including increasing intervals of key reservoirs southwards and westwards from the Njom-1 well (drilled in 2008), and, more defined faults and seals at the Njonji prospects.
Whilst the company noted that both matters would ultimately only be answered fully by drilling, but, the additional analysis is expected to help Tower refine the future well location and assist planning, including those around well testing.
It is also carrying out further petrophysical analysis of nearby wells.
Tower added that it has, in the meantime, been working to negotiated rig and associated service contractors for the planned drill programme.