In a statement on Thursday, the firm said results of drilling and samples of reservoir fluid indicated potential oil deposits in the Auwerwer and Upper Lokone sandstone reservoirs of between 60 and 100 metres.
The firm has stated that it will continue with future flow testing which aims to confirm productivity from these zones.
This is the fourth consecutive well discovery, in the first oil basin opened in Northern Kenya, since the company started drilling in 2012.
“The Ekales-1 well is located between the Ngamia-1 and Twiga South-1 oil discoveries and the reservoir properties at this location appear similar to those previously encountered,” the company said.
Once operations have completed the rig will move to drill the exploration prospect Amosing-1 south of Ngamia-1.
Tullow operates the Ekales-1 well with Africa Oil taking a 50 percent interest.
“This success at the Ekales-1 wildcat is further evidence of the exceptional oil potential of our East African Rift Basin acreage. Having opened the first basin with the Ngamia-1 well last year, we are now increasing the pace of exploration in Kenya aiming for 12,” the company assured.
Meanwhile the Agete-1 well, also in block 13T, commenced drilling in mid-September this year and the firm expects a third rig to be operational in quarter 4, 2013.