Hydrocarbon Deposits Discovered in Gongola Basin-Upper Benue Trough, Nigeria

  • Oct 15, 2019
  • Oil and Gas Press

Nigerian National Petroleum Corporation (NNPC) has announced the discovery of hydrocarbon deposits in the Kolmani River II Well on the Upper Benue Trough, Gongola Basin, in the North-Eastern part of the country.

It would be recalled that drilling of the Kolmani River II Well was flagged-off in a colourful ceremony by President Muhammadu Buhari on the 2nd of February, 2019.

A press release by NNPC, stated that it acquired 435.54km2 of 3D Seismic Data over Kolmani Prospect in the Upper Benue Trough, Gongola Basin. This was to evaluate Shell Nigeria Exploration and Production Company (SNEPCo) Kolmani River 1 Well Discovery of 33 BCF and explore deeper levels.

The well was drilled with “IKENGA RIG 101” to a total depth of 13,701feet encountering oil and gas in several levels. A Drill Stem Test (DST) is currently on-going to confirm the commercial viability and flow of the Kolmani River reservoirs.

The Corporation explained that on Thursday 10th October, 2019, at 18:02hours, one of the reservoirs was perforated and hydrocarbon started flowing to the well head at 21:20hours in which the gas component was flared to prevent air charge around the Rig.

Preliminary reports indicate that the discovery consists of gas, condensate and light sweet oil of API gravity ranging from 38 to 41 found in stacked siliciclastic cretaceous reservoirs of Yolde, Bima Sandstone and Pre-Bima formations.

Computation of hydrocarbon volume is on-going and will be announced in due course.

The Corporation has also acquired additional 1183km2 of 3D seismic data over highly prospective areas of Gongola Basin with a view to evaluating the full hydrocarbon potential of the Basin.

NNPC has deployed world class cutting-edge technologies including Surface Geochemistry, Ground Gravity/Magnetic, Stress Field Detection, Full Tensor Gradiometry aerial surveys to de-risk exploration in the frontier basins. The NNPC plans to drill additional wells for full evaluation of the hydrocarbon volume in the Gongola Basin.

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