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The AAPG/Datapages Combined Publications Database
CSPG Bulletin
Abstract
Geothermal Gradients in the Southern Nigeria Basin
ABSTRACT
Subsurface temperatures from the Southern Nigeria Basin obtained from the Nigerian Federal Ministry of Petroleum Resources were used in the determination of subsurface temperature gradients. Temperature measurements made with maximum recording thermometers were obtained from electric logs and production data. Fields without production temperature data had their temperatures corrected to true subsurface temperatures, using a 22 per cent correction factor.
Temperature gradients in the Niger Delta range from 1.20 to 3.00°F/100 ft (31 m) based on an average surface temperature intercept of 74°F. Maximum temperature gradients occur in the Anambra Basin with fairly high gradients in the offshore western and eastern flanks of the Niger Delta. Areas of lowest temperature gradients at the nose of the Niger Delta coincide with areas of maximum sedimentation.
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