From Upstreamonline16 Jun 2023 11:22
Intriguing structures': New oil promise identified in Namibia acreage outside red hot Orange basin
Studies suggest presence of multibillion-barrel structures in Tower Resources’ Walvis basin blocks offshore Namibia
16 June 2023 9:33 GMT UPDATED 16 June 2023 9:39 GMT
By Iain Esau in London
London-listed junior Tower Resources has identified intriguing structures on blocks in Namibia’s Walvis basin that it hopes could host billions of barrels of oil.
Most industry attention in Namibia has been focused on the Orange basin, driven by the huge oil discoveries made by Shell and TotalEnergies, although the country’s other basins are starting to garner more interest.
Shell aims to ‘move at pace’ after Namibian well test success
Read more
Tower operates blocks 1910A, 1911 and 1912B — also known as Petroleum Exploration Licence (PEL) 96 — off the Skeleton Coast, sandwiched by acreage that ExxonMobil controls in the Walvis and Namibe basins.
The reasons for Tower’s optimism are results from a just completed basin and thermal maturity study over PEL 96 which, it said, “shows clear evidence of a working petroleum system” in the Dolphin graben and found direct hydrocarbon indicators (DHIs), which explorers always want to see before they drill.
These DHIs include large gas chimneys on the seabed and seismic anomalies indicating shallow gas accumulations above and close to these chimneys.
The study assimilated data from large 2D seismic datasets and exploration wells, including one drilled in the acreage by Norsk Hydro in 1994 from which oil cores have been recovered.
Tower chief executive Jeremy Asher said: “We are excited by the results of the basin modelling work and its indication of the prospectivity of (the) licenses in Namibia.
“It explains neatly the results of the Norsk Hydro well, the source of lacustrine oil found within it, the reasons why that oil found its way into that well and subsequently migrated away from it.”
He said the study’s conclusions “indicate the potential for either of the giant billion-barrel-plus structures (called Alpha and Gamma) in the west of the license to be charged”.
Namibia will not ‘seize’ stakes in current oil and gas licences, says government
Read more
In addition, Asher said the oil migration pathways, coupled with the industry successes in drilling stratigraphic plays in the Orange basin, “enhance our interest in the similar stratigraphic leads that we interpret on the flanks of the Alpha structure, in particular”.
Tower is currently carrying out oil seep analysis to accompany the basin modelling work, and a review of existing volumetric data on the prospects and leads that have already been identified is underway.
All this information will help the company decided where 3D seismic should be acquired.
Tower has an 80% stake in PEL 96 and is partnered by state owned Namcor.