Sedimentological Resolution of Biostratigraphic and Sequence Stratigraphic Evaluation of Toms-well, OG-field, Greater Ughelli Depobelt, Onshore, Niger Delta Basin, Nigeria

Main Article Content

Frankie Ojo Balogun
Osarodion Ebomwonyi

Abstract

One hundred and seventy six ditch cutting samples within the interval of 5425ft to 8535ft from Toms-well, OG-Field, Greater Ughelli Depobelt, onshore, Niger Delta basin, were subjected to sedimentological analysis and microscopic analysis using a binocular reflected light microscope and microscopic analysis of palynomorphs and foraminifera using a binocular transmitted light microscope. Textural analysis of ditch cutting samples to build a lithologic model of the penetrated sedimentary succession was established to constrain the alternation of sand packages from proximal to distal. The alternation of shale and sand revealed that the studied intervals belong to paralic Agbada Formation of the Niger Delta basin. The combined results of foraminiferal, palynological and sequence stratigraphy showed that the studied well (Toms-well) was deposited during Oligocene to Early Miocene Epoch of  numerical ages of 31.3MaMfs, 33.0 Mfs and 34.0MaMfs; while 24.3MaMfs and 31.3MaMfs indicated by Bolivina 26 and Uvigerina 5 as diagnostic marker shale with their corresponding SB delineated at 24.9Ma and 32.4Ma. Prospective reservoirs intervals delineated in Toms-well are 6870 ft-6915 ft, 8175-8205 ft and 8265-8340 ft. The P-zones and F-zones established are P560/F7400, P540/F7600 and P520/F7800. Results from the integration of sedimentological, foraminiferal and palynological suggest sediments deposition in marginal marine to shallow marine environments.

Keywords:
Foraminifera, biostratigraphy, oligocene, ditch cuttings.

Article Details

How to Cite
Balogun, F. O., & Ebomwonyi, O. (2019). Sedimentological Resolution of Biostratigraphic and Sequence Stratigraphic Evaluation of Toms-well, OG-field, Greater Ughelli Depobelt, Onshore, Niger Delta Basin, Nigeria. Asian Journal of Geological Research, 2(3), 1-23. Retrieved from http://journalajoger.com/index.php/AJOGER/article/view/30090
Section
Original Research Article

References

Adebayo OF, Akinyemi SA, Madukwe HY, Aturamu AO, Ojo AO. Geochemical characterization and palynological studies of some Agbada Formation deposits of the Niger Delta basin: Implications for paleodepositional environments. Turkish Journal of Earth Sciences. 2016;25:573-591.

Olayiwola PO. Petroleum and structural change in a developing country: The case of Nigeria. New York, NY, USA: Praeger; 1987.

Okosun EA, Chukwu JN, Ajayi EO, Olatunji OA. Biostratigraphy, depositional environment and sequence stratigraphy of Akata Field (Akata 2,4,6 and 7 wells), Eastern Niger Delta, Nigeria. International Journal of Scientific and Engineering Research. 2012;3(7):1-27.

Fajemila OT. Foraminifera biostratigraphy and paleoenvironmental studies of two wells from offshore Western Niger Delta. Ife Journal of Science. 2012;14:369- 384.

Adenugba AA, Dipo SO. Non-oil exports in the economic growth of Nigeria: A study of agricultural and mineral resources. J. Educ. Soc. Res. 2013;3:403-418.

Oloto IN, Promise W. Biostratigraphic study and paleo environmental reconstruction of cores from offshore (South Western) Niger Delta, Nigeria. International ournal of Scientific and Technology Research. 2014;3:279-286.

Nwajide CS, Reijers TJA. Sequence architecture in outcrop: examples from the Anambra Basin, Nigeria. NAPE Bulletin. 1996;11:23-32.

Oyedele KF, Oladele S, Ogagarue DO, Bakare K. Sequence startigraphic approach to hydrocarbon exploration in Bobsaa Field, Onshore Niger Delta. Journal of Petroleum and Gas Exploration Research. 2012;2:106-114.

Zellers SD. Foraminiferal sequence biostratigraphy and seismic stratigraphy of a tectonically active margin; the Yakataga Formation, northeastern Gulf of Alaska. Marine Micropaleontology. 1995;26:255-271.

Armentrout JM. High resolution sequence biostratigraphy: example from the Gulf of Mexico Plio-pleistocene (London). Geological Society Special Publication. 1996;104:65-86.

Oloto IN. Palynological study of Igbomotoru-1 Well, Central Coastal Niger Delta, Nigeria. International Journal of Scientific and Technology Research. 2014; 3:287-292.

Ukpabi N, Osterloff PL, Oloto IN. Biostratigraphy studies of miocene sediments. In The onshore/offshore area, Niger Delta Basin, Nigeria. International Journal of Science Invention Today. 2014; 3:330-345.

Obaje SO, Okosun EA. Taxonomic notes on marker benthic foraminifera of Tomboy Field, offshore Western Niger Delta, Nigeria. International Journal of Science and Technology. 2013;3:357- 364.

Nwozor KR, Omudu MI, Ozumba BM, Egbuachor CJ, Onwuemesi AG, Anike OL. Quantitative evidence of secondary mechanisms of overpressure generation: insights from parts of Onshore Niger Delta, Nigeria. Petroleum Technical Development Journal. 2013;3:64-83.

Doust H, Omatshola E. Niger Delta in edwards divergent/passive margin basins. American Association of Petroleum Geologists Bulletin memoir. 1990;48:201-238.

Koledoye AB, Aydin AA. 2000. Three-dimensional visualization of normal faults segmentation and its implication for faults growth. The Leading Edge. 2000;19:692-701.

Obiadi II, Obiadi CM. Structural deformation and depositional processes: Insights from the Greater Ughelli Depobelt, Niger Delta, Nigeria. Oil and Gas Research. 2016;2(3):1000118(1-8).

Magbagbeola OA, Willis BJ. Sequence stratigraphic and syndepositional deformation of the Agbada Formation Robertkiri field Niger Delta, Nigeria. American Association of Petroleum Geologists Bulletin. 2007;91:945-958.

Hooper RJ, Fitzsimmons RJ, Grant N, Vendeville BC. The role deformation in controlling depositional patterns in the south-central Niger Delta. West Africa Journal of Structural Geology. 2002;24: 847-859.

Damuth JE. Neogene gravity tectonics and depositional processes on the deep Niger Delta continental margin. Marine and Petroleum Geology. 1994;11:320-346.

Corredor F, Shaw JH, Bilotti F. Structural styles in the deep-water fold and thrust belts of the Niger Delta. American Association of Petroleum Geologists Bulletin. 2005;89:753-780.

Olabode SM, Won J, Udoekong GO, Ibilola OO, Dixon D. Resolving the structural complexities in the deepwater Niger-Delta fold and thrust belt: a case study from the Western Lobe Nigerian offshore depobelt. Search and Discovery Article. 2010;10289:1-30.

Rotimi OJ. Sequence stratigraphy study within a chronostratigraphic framework of ‘Ningning field’, Niger Delta. RMZ– Materials and Geoenvironment. 2010;57:475–500.

Boggs S. Principles of sedimentology and stratigraphy, 4th ed. Pearson, Upper Saddle River, New Jersey; 2006.