The company completed a soil gas survey to determine if any of the source rocks were hydrocarbon-bearing.
Samples were sent to Houston and analysed by Exploration Technologies.
“The results show the presence of anomalous, above background levels of methane, ethane, propane and butane gases which, by both their magnitudes and ratios, confirm the existence of one or more oil generating source rocks within the licence area,” the company said on Wednesday.
“Based upon the results of this initial survey and the fact that the samples were acquired only along widely spaced roads and tracks, Frontier plans to extend the licence period so that additional sampling may take place during 2014.”
Frontier’s blocks 1717 and 1817 cover an area of about 18,922 square kilometres.
Frontier is the operator of the blocks with a 90% working interest, while the Namibian National Oil Company has a 10% carried interest in the licence.