The Nigerian National Petroleum Corporation (NNPC) has made public the discovery of crude oil deposits in the Kolmani River II Well on the Upper Benue Trough, Gongola Basin, in the North-Eastern part of the country.
It will be recalled that drilling of the Kolmani River II Well was flagged-off in a colorful ceremony by President Muhammadu Buhari on February 2, 2019.
A press release issued by the Corporation’s Acting Group General Manager, Group Public Affairs Division, Mr. Samson Makoji, stated that NNPC 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 on several levels. A Drill Stem Test (DST) is currently ongoing to confirm the commercial viability and flow of the Kolmani River reservoirs.
The corporation explained that on Thursday, October 10, 2019, at 18:02 hours, one of the reservoirs was perforated and crude oil (hydrocarbon) started flowing to the wellhead at 21:20 hours 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.
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It said that the computation of hydrocarbon volume was ongoing and would be announced in due course.
The Corporation has also acquired an 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 a full evaluation of the hydrocarbon volume in the Gongola Basin.
It will be recalled that during the spud-in ceremony of Kolmani River II, President Buhari stated the commitment of his administration to the exploration of oil and gas in the frontier basins in the entire length and breadth of the country. The basins include the Benue Trough, Chad Basin, Sokoto, and Bida basins.
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He also stated that attention would be given to the Dahomey and Anambra basins which have already witnessed oil and gas discoveries.
The discovery of oil and gas in commercial quantity in the Gongola Basin will attract foreign investment, generate employment for people to earn income and increase government revenue.
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