1 King Fahd Uni ver sity of Pe tro leum and Min er als, De part ment of Geosciences, Dhahran 31261, Saudi Ara bia Sanuade, O.A., Kaka, S. I, 2017. Se quence strati graphic anal y sis of the Otu Field, on shore Niger Delta, us ing 3D seis mic data and bore hole logs. Geo log i cal Quar terly, 61 (1): 106-123, doi: 10.7306/gq.1318 3D seis mic data and wire line logs from thir teen bore holes were used to es tab lish a se quence strati graphic anal y sis of Miocene depositional sys tems of the Otu

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... Field in the on shore area of the Niger Delta. The subsurface fa cies of the field re vealed three se quences that are bounded by four se quence bound aries (SBs) which are in ter preted as ero sional un con formi ties with three max i mum flood ing sur faces (MFSs). Se quences de lin eated are com posed of lowstand sys tems tracts (LST), falling stage sys tems tracts (FSST), transgressive sys tems tracts (TST) and highstand sys tems tracts (HST) re veal ing depositional sys tems de pos ited dur ing dif fer ent phases of base level changes. De pos its iden ti fied within the LSTs are flu vial chan nel sands while TSTs capped the LST fa cies. HSTs are com posed of coars en ing and shallowing up wards in ter vals includ ing deltaic flu vial sands. The se quences were de pos ited in tran si tional to shal low ma rine en vi ron ments. A seis mic geomorphological study car ried out on all the SBs and MFS 3 shows a re la tion ship be tween depositional en vi ron ments, chan nel type and di rec tion of palaeo-flow in re la tion to faults. The res er voirs of the LST and HST and seals from ma rine shale of the TST and HST could form strati graphic traps for hy dro car bon ac cu mu la tion in the Otu Field. This study has in te grated 3D seis mic and bore hole log data to de velop a se quence strati graphic frame work that would be a prof it able means to guide hy dro car bon ex plo ra tion and pro duc tion strat e gies.