Abstract
Foraminiferal and sedimentological analysis was carried out using ditch cutting samples from intervals 2700 ft. - 10,185 ft. in AE-1 well. The samples were composited at 60 ft. into ninety four (94) ditch cutting samples. The standard micropaleontological sample procedures to recover the foraminiferal biofacies assemblages was utilized, followed by analysis and interpretation of the obtained results. The sedimentological analysis reveals five lithofacies - sandstone, sandy shale, shaly sand, mudstone and sandy clay which constitute part of the Agbada Formation of the Niger Delta. The foraminiferal fauna recovered from the samples studied comprised of twenty four species grouped into nineteen genera from niniteen families and nineteen subfamilies. A few number of miscellaneous microfossils such as Ostracoda, Holothuroidea and Echinoderm remains were recovered. The total count of foraminiferal defined from this well is four hundred and nineteen (419). The planktic foraminiferal count was two hundred and forty two (242) (57.8 % of the total count) while the benthics foraminiferal count was one hundred and seventy seven (177) (42.2 % of the total count). Among the benthic forms, the calcareous consists of one hundred and forty nine forms (149) (33.4 % of the total benthic count) while the agglutinating benthic forms were thirty seven (37) (8.8 % of the total benthic count). One (1) planktic (Chiloguembelinacubensis) and three (3) benthic (Eponidesberthelotianus, Hanzawaiastratonii and Nonionellaauris) informal foraminiferal zones were established in the well. The age of the AE-1 well sediments has been interpreted to belong to Early Oligocene - Early Miocene in comparism with foraminiferal markers species whose stratigraphic ranges are well established in the Niger Delta and globally. This inferred the presence of the Rupelian - Burdigalian sediments in the Niger Delta.
 Keywords: Foraminiferal, Biozone, Age, Rupelian, Burdigalian.
Highlights
Rock unit categorized by one or more taxa can of geological strata demarcated based on their typical be differentiated from rock units with one or more fossil taxa found in them
FORAMINIFERAL ANALYSIS OF AE-1 WELL, AGBADA FORMATION ONSHORE, WESTERN NIGER DELTA BASIN: GEOLOGIC SETTING AND LITHOSTRATIGRAPHY OF THE NIGER DELTA BASIN The Niger Delta is one of the World‟s largest Tertiary delta systems and an exceptionally prolific hydrocarbon province. It is situated on the West African continental margin at the apex of the Gulf of Guinea, which formed the site of a triple junction during continental break-up in the Cretaceous
MATERIALS AND METHODS Ninety four (94) ditch cutting samples composited at 60 ft. from interval 2700 ft. - 10,185 ft. were provided by the Nigerian Petroleum Development Company (NPDC)
Summary
Datum (FAD)/Last Downhole Occurrence (either local or Biozone units are intervals global). The main data of biostratigraphic analysis are: the biozonation studies carried out include the work of occurrence or nonexistence of a fossil taxon in a Ifeoluwadun and Saka (2018) They established two geologic horizon; the First Downhole Occurrence (FDO) informal planktonic foraminiferal zones. FORAMINIFERAL ANALYSIS OF AE-1 WELL, AGBADA FORMATION ONSHORE, WESTERN NIGER DELTA BASIN: GEOLOGIC SETTING AND LITHOSTRATIGRAPHY OF THE NIGER DELTA BASIN The Niger Delta is one of the World‟s largest Tertiary delta systems and an exceptionally prolific hydrocarbon province It is situated on the West African continental margin at the apex of the Gulf of Guinea, which formed the site of a triple junction during continental break-up in the Cretaceous.
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