Nigeria, São Tomé Seek Fresh Investment to Revive Stalled Deepwater Oil Prospects

More than two decades after early exploration efforts failed to yield commercially viable results, Nigeria and São Tomé and Príncipe are renewing efforts to unlock oil potential in their jointly managed offshore zone, calling on investors—particularly indigenous producers—to re-engage in exploration activities.

The Nigeria–São Tomé and Príncipe Joint Development Authority (JDA) has introduced more attractive fiscal terms to entice participation, including reduced signature bonuses and streamlined regulatory requirements for prospective investors willing to operate in the challenging ultra-deepwater terrain.

Spanning approximately 34,540 square kilometres in the Gulf of Guinea, the Joint Development Zone (JDZ) is widely regarded as a frontier basin with significant untapped hydrocarbon potential.

The JDZ was created under a 2001 bilateral treaty between both countries, establishing a framework for shared resource ownership on a 60:40 basis. Exploration and production activities in the zone are governed by Production Sharing Contracts (PSCs), designed to balance risks and rewards between governments and investors.

Despite early optimism, progress in the zone has remained slow. A 2006 discovery of about 270 million barrels of crude oil was ultimately classified as marginal and commercially unviable, prompting major international oil companies such as Chevron, Texaco, and TotalEnergies to withdraw from further operations.

Acting Chairman of the JDA, Mohammed Ibrahim, in an interview with THISDAY, urged local investors to seize the opportunity presented by the largely unexplored basin, emphasizing the need for indigenous participation to drive renewed exploration efforts.

He noted that the 2003–2007 licensing round generated about $123 million in signature bonuses, but enthusiasm waned when subsequent drilling failed to deliver commercially viable volumes.

According to Ibrahim, the ultra-deepwater nature of the assets presents significant cost challenges, making scale a critical factor in determining project viability. He cited the Obo-1 field, where estimated reserves of 50 to 100 million barrels were discovered, as an example of finds that fall short of the threshold required to justify large-scale investment.

He stressed that for exploration in the JDZ to succeed, discoveries must be substantial enough to offset the high costs associated with deepwater drilling and production.