Tullow Oil PLC said it has made a fifth consecutive oil discovery in its rift basin site onshore Northern Nigeria.

The company said it discovered and sampled moveable oil with an estimated 100 metres of net oil pay in good quality sandstone reservoirs at the Agete-1 exploration well in Block 13T.

“This discovery de-risks several follow-on prospects located to the north and is on trend with the Twiga South, Ekales, and Ngamia oil discoveries and adds to the significant resource base already discovered,” the company said in a statement.

Tullow is the operator of the Agete-1 well and has a 50% interest, while Africa Oil has a 50% non-operating interest.

“An intensive campaign for 2014 includes appraisal and exploration within this first basin and pioneering wells targeting the prospectivity throughout the entire chain of similar rift basins,” Tollow Exploration Director Angus McCoss said in a statement.

Tullow said its exploration and appraisal activities continue to accelerate elsewhere in Kenya, with the Amosing-1 well in Block 10BB expected to commence drilling before the end of November, the Etuko-1 well test in Block 10BB also scheduled to commence this month, and the Ekales-1 well test scheduled to commence in early December.