The well, located 200 kilometres off Walvis Bay, is being drilled in a water depth of 1034 metres by the semi-submersible Transocean Marianas.
The stakes are high as HRT begins an initial three-well wildcatting campaign off Nambia.
The company’s exploration results in Brazil’s Solimoes basin have yielded some promising gas and condensate discoveries but have not unearthed significant volumes of oil, as billed in the company’s marketing literature for a 2010 stock market launch.