Ophir has interests in six blocks in Gabon: Mbeli, Ntsina, Manga, Gnondo, Nkouere and Nkawa. All of these are located offshore in the North Gabon basin in water depths of up to 2,500 metres.


Ophir has a 40% operated interest in the Mbeli and Ntsina Blocks, a 70% operated interest in the Gnondo and Manga Blocks and a 100% operated interest in the Nkawa and Nkouere Blocks acquired in 2014. All of the Blocks are located offshore in the North Gabon basin in water depths up to 2,500m.


Key highlights

  • Shot over 10,000 sq km of seismic across six Blocks in a single campaign over six months


  • Interpret extensive 3D seismic data and develop prospect inventory


operated interest in the Nkawa and Nkouere Blocks


play fairways have been identified

Across the six blocks, Ophir has identified three play fairways: the northern pre-salt, the Ogooué delta extension and the Cretaceous structural / stratigraphic plays.

In 2014 over 10,000 sq km of 3D seismic data was acquired over all blocks. The prospect inventory is been refined and ranked on this and legacy data during 2015. Incorporation of these prospects into the Ophir portfolio will determine the drilling programme for 2016/2017.

Ophir has previously drilled five wells in Gabon. There were three wells in the 2014 campaign, the Padouck-Deep 1 exploration well tested the pre-salt prospectively in the Ntsina block and encountered thicker than expected sandstones, however there were no hydrocarbon shows. The Affanga Deep-1 well was an extension of the proven Ogooué Delta play in the Gnondo permit and encountered poor reservoir characteristics. The Okala-1 well encountered a thick section of Aptian salt as prognosed and well developed sandstones in the Gamba and Dentale formations, but there were no significant hydrocarbon shows in the target reservoirs. Post well studies have shown that all wells have encountered a thermo-genic hydrocarbon front.

Analysis of the 2014 campaign has enhanced the understanding of the deepwater distal margin play of the North Gabon basin. The data acquired during the 2014 drilling campaign indicate the presence of oil-prone source rocks and suggests that this is potentially a future oil province.

The 3D seismic data captured in 2014 will further enhance the technical understanding and help to determine whether Ophir decides to conduct further drilling operations in Gabon.