Facies Analysis and Paleoenvironmental Reconstruction of Well X, Onshore Niger Delta, Nigeria

Biofacies and lithofacies analysis of one hundred ninety-two (192) ditch cutting rock samples from well x, onshore Niger Delta was carried out for the purpose paleoenvironmental reconstruction succession. The objectives were to identify units species foraminifera use both quantitave qualitative foraminiferal assemblage recognise benthonic biofacies integrate results delineation paleobathymetric settings sediments penetrated by x interval studied. prepared through wet-sieve with 63µm mesh sieve size, subsequently dry-sieve 250µm 500µm sizes. analyzed generate data sedimentological grain-size assemblages. provided associations, sand/shale ratio sorting/gradational profile studied intervals well-x while micropaleontological identified a total ninety-three (93) preserved which three (3) associations delineated. include: Ammonia beccarii, beccarii/Bolivina scalprata miocenica, Haplophragmoides compressa/ Valvulina flexilis indicating Shallow Inner Neritic, Inner- Middle Outer Neritic – Upper Bathyal paleoenvironment respectively. result indicated penetration into Agbada Formation delta deposition within shallow deep marine settings, predominantly as channels, intercalated overbank distal bar/bay deposits. Synthesis stratigraphic development between coastal deltaic upper bathyal paleowater depths.