Lithological Characteristics of XY Field, Shallow Offshore Niger Delta Basin, Nigeria

Main Article Content

Alkali Y. Baba
Jacinta N. Chukwuma-Orji
Owoeye O. Oluwafemi
Taiwo M. Opeyemi


Aims: The purpose of this study is to delineate litho-stratigraphic sequences penetrated by well 01, 02 and 03 within the XY field and also to describe the litho-stratigraphic characteristics of the sequences delineated using ditch cuttings, textural/lithological attributes and the distribution of the index minerals (ferruginous material, glauconites, carbonaceous detritals and shell fragments.

Study Design:  The result of the lithostratigraphic analysis carried out on three wells from the XY field are presented and discussed.

Place and Duration of Study: The study was carried out in the shallow offshore Western Niger Delta, Nigeria from wells 01, 02 and 03 of XY field from July 2018 to September 2018.

Methodology: The ditch cutting samples for the three wells were lithologically analysed under a stereo-binocular microscope Olympus model SZ 2 ILST. The dominant and secondary rock types, colour, average grain size, roundness, sorting and accessory minerals, sand-shale percentage, fossil and nature of cement and stage of diagenesis were the parameters used for the assessment of the samples. The lithologic descriptions were complemented using logs analyses.

Results: Lithological investigation of the three wells reveals that the lithofacies are generally made up of grey to dark grey shale and mudstone/siltstones interbedded with fine-medium and coarse-grained sandstones. Two units of lower paralic sequence and upper paralic sequence were assigned to the studied section of the three wells, based on their lithologic characteristics. The lower unit is composed mainly of shale and mudstone/siltstone interbedded with sands, while the upper unit is dominantly sanded alternating with shales/mudstones. On the basis of the foregoing, only one of the three formational units of Niger Delta was encountered.

Lithostratigraphy, Agbada Formation, sandstones, shale, paralic sequence.

Article Details

How to Cite
Baba, A. Y., Chukwuma-Orji, J. N., Oluwafemi, O. O., & Opeyemi, T. M. (2019). Lithological Characteristics of XY Field, Shallow Offshore Niger Delta Basin, Nigeria. Asian Journal of Geological Research, 2(4), 1-7. Retrieved from
Original Research Article


Obaje NG. Geology and Mineral Resources of Nigeria. Springer-Verlag, Berlin Heldelberg. 2009;109 -113.

Ojo EA, Fadiya LS, Ehinola OA. Biozonation and correlation of BDX-1 and BDX-2 wells of deep offshore Niger Delta using calcareous nannofossils. Search and Discovery Article, Association of American Petroleum Geologist. 2009;50194:8.

Doust H, Omatsola E. Niger Delta, In: Edwards, J. D. & Santagrossi, P. A. (eds.), Divergent/passive margin basins. American Association of Petroleum Geologists, Tulsa Oklahoma, Memoir. 1990;45:201-238.

Bodunde SS, Enikanselu PA. Integration of 3D-seismic and petrophysical analysis with rock physics analysis in the characterization of SOKAB field, Niger delta, Nigeria. Journal of Petroleum Exploration and Production Technology. 2018;1-11.

Miall AD. Markov chain analysis applied to an ancient alluvial plain succession: Sedimentology. 1973;20:347-364.

Miall AD. A review of the braided river depositional environment: Earth Sci. Revs. 1977;13:1-62.

Miall AD. The geology of fluvial deposits: Sedimentary facies. Basin analysis and petroleum geology, Springer-Verlag, New York. 1996;2:1-3.

Short KC, Stauble AJ. Outline of geology of Niger delta complex. Sedimentology. 1967;2:195-222.

Weber KJ. Sedimentological aspects of oil fields in the Niger Delta. Geologic en Mijnbouw. 1971;50:559–576.

Weber KJ, Dankoru EM. Petroleum gelogical aspects of the Niger Delta. Nigeria Journal of Mining and Geology. 1975;12(½):9.

Ejedawe JE. Patterns of incidence of oil reserves in Niger Delta Basin. American Association of Petroleum Geologist Bulletin. 1981;65:1574-1585.

Ejedawe JE. Occurrence of giant oil field in the Niger Delta Basin. Journal of Mining and Geology. 1982;18(2):7-15.

Stacher P. Niger delta hydrocarbon habitat. Nigerian Association of Petroleum Explorationist Bulletin. 1994;9(1):67- 75.

Emudianughe JE, Ogagarue DO. Investigating the subsurface pressure regime of Ada-field in onshore Niger Delta Basin Nigeria. J Geol Geophys. 2018;7: 452.

Stoneley R. The Niger Delta region in the light of the theory of continental drift. Geological Magazine. 1966;105:385- 397.

Burke KC. Long shore Drift, submarine canyons and submarine Fans in Development of Niger Delta. American Association of Petroleum Geologist Bulletin. 1972;56:1975-1983.

Bertram Maduka Ozumba. Stratigraphic Framework of the Western Central Swamp of the Niger Delta, Nigeria. Sci Environm. 2018;1:105.

Oresajo BS, Adekeye AO, Haruna KA. Sequence stratigraphy and structural analysis of the Emi field, offshore depobe lt, eastern Niger Delta Basin, Nigeria. Ife Journal of Science. 2015;17(2):395-408.

Selley RC. Ancient Sedimentary Environments. 2nd (Ed.) Cornell University Press, Ithaca, New York. 1978;287.

Pictet A, Delanoy G, Adatte T, Spangenberg JE, Baudouin C, Boselli P, Föllmi KB. Three successive phases of platform demise during the early Aptian and their association with the oceanic anoxic Selli episode (Ardèche, France). Palaeogeography, Palaeoclimatology, Palaeoecology. 2015;418:101-125.

Fru EC, Kilias S, Ivarsson M, Rattray JE, Gkika K, McDonald I, Broman C. Sedimentary mechanisms of a modern banded iron formation on Milos Island, Greece. Solid Earth. 2018; 9(3):573.