Jornal de Geologia e Geofísica
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Assessment of Nkporo Shales in Calabar Flank to Ascertain its Hydrocarbon Potentials, South-South, Nigeria

Mfoniso U Aka*, Christopher I Effiong, Dianabasi N Akpan

The hydrocarbon potential assessments were carried out on sixteen (16) samples obtained from the Nkporo shales, Calabar flank, to assess the Total Organic Carbon (TOC), and Soluble Organic Matter (SOM) contents. TOC values ranged from (0.44-5.16) wt. % by common significance of 2.20 wt. % which indicates adequate organic matter of fount stone, while SOM values ranged from (1385-2785) ppm and (13.84-27.85) wt. % of 2041 ppm and 20.65 wt. % common proportion, indicating a higher organic matter for petroleum source rock with good hydrocarbon content. The depth of sample formations ranged from (1.0-25.0) m which depicts a dark grey to the dark brown coloration of Nkporo shales interbred of sandy shale, siltstone, and mudstone respectively. However, the TR analysis for the level of rock maturity shows a high value of 72.82 wt. % which indicates the state of maturity of the studied samples. This implies that the Calabar flank should be an immediate exploration focus.