FUPRESpace
Welcome to FUPRESpace, The Institutional Repository of Federal University of Petroleum Resources. A collection of theses, articles, books, videos, images, lectures, papers, data sets, and all types of digital content originating from the Federal University of Petroleum Resources, Nigeria. This repository is managed by the University Library
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Recent Submissions
Petrophysical Evaluation of Hydrocarbon Potential of “OMA” Field, Niger Delta
(International Journal of Research and Innovation in Applied Science (IJRIAS) / RSIS International, 2022) Olarewaju, M.A.; Osisanya, O.W.; Korode, A.I.; Ibitoye, A.T.
The goal of this study is to maximize hydrocarbon reserves by evaluating reservoirs using derived petrophysical parameters, a common practice in the oil and gas industry. In order to complete this task, data (logs) from three Niger Delta onshore wells (OMA01, OMA02, and OMA 03) were used.
Gamma-ray, resistivity, and neutron-density well logs were used in this study for lithology identification, fluid delineation, and hydrocarbon identification. Petrel and Rokdoc software were used for lithology identification and petrophysical analysis computation. The qualitative analysis revealed that the wells
drilled through various lithologies contained sand and shale intercalations. Three in WellOMA01, Four in WellOMA02, and Two in WellOMA03, reservoirs were delineated. The field's petrophysical analysis was also produced. Shale's volume varies from 10% to 24%, its porosity from 14% to 26%, and its water
saturation from 16% to 53%, while its permeability was relatively high. The highest hydrocarbon saturation (84%) was found in RES 01 from WellOMA03. The "OMA" field study revealed that there is a sizably high potential for hydrocarbons.
Hydrocarbon Reservoir Mapping and 3d Seismic Interpretation of “Deejay” Field, Onshore Niger Delta
(RSIS International, 2021) Alabi, A.O.; Oyanameh, O.E.; Agbalagba, E.O.; Korode, A.I.; Osisanya, O.W.
The 3-D seismic data interpretation and reservoir mapping of ‘‘Deejay field’’ have been carried out with the use of Schlumberger (PETRELTM) software. This research work is aimed at delineating the subsurface structure and deducing the trapping system of the study area that may aid hydrocarbon accumulation.
The research methodology involved horizon and fault interpretation to produce subsurface structural maps. Available Wireline log signatures were employed to identify hydrocarbon bearing sands and compute reservoir petrophysical parameters for hydrocarbon pore volume determination. Two faults F_01 and F_02 (synthetic) were mapped using seismic structural attribute (variance) with fault polygon generated on
the surface. Structural interpretation for inline 5533 revealed two horizons (1&2) were taken into consideration with their time and depth maps generated for the purpose of this study. The
structural maps revealed fault assisted closures at the centre of the field which correspond to the crest of rollover anticlines and possibly served as the trapping medium. Three hydrocarbon bearing reservoirs - S1, S2 and S3 were delineated from three wells and the top and base of each reservoir window were
mapped from the wells. Reservoirs S1, S2 and S3 have average porosity values of 30.7%, 29.8% and 29.3% respectively. All the porosity values obtained are in agreement with the established
porosity values of Agbada formation of Niger Delta as it ranges from 28-32%. The obtained permeability index for the three reservoirs are rated very good. Hydrocarbon saturation values for the three wells have an average of 72.3% for S1, 83.7% for S2 and 76.7% for S3. The Petrophysical parameters from the
wells show that most of the reservoirs are good targets in hydrocarbon prospecting. The result shows that the three reservoirs in the field have high hydrocarbon potential and good trapping mechanism for its productivity.
Unloading Mechanism: an Indication of Overpressure in Niger Delta („X‟-Field) using Cross Plots of Rock Properties
(Seventh Sense Research Group, 2018) Eze, S.; Ideozu, R.U.; Ibitoye, A.T.; Osisanya, O.W.; Tiekuro, E.
This study has investigated the unloading mechanism causes of overpressure and delineated the
overpressure zones in X- field Niger Delta. The Niger Delta basin has many overpressure zones with
different origins and depositional environments. This research used well log data from four (4) wells in X -
Field Niger Delta. The logs include Gamma ray log, deep induction log, Density log, and sonic log.
Densities and p-wave velocities derived from sonic log were cross plotted using the E log modelling tool
embedded within Hampson-Russel software application. The crossplots were subjected to over
pressure analysis. The results obtained revealed Unloading mechanism from 5341ft (1627.9m) to
6448ft (1965.4m) and overpressure zones from 4234ft (1290.5m) to 4788ft (1459.4m) about 168.86m thick within well 01, Unloading mechanism from 2289.5m to 2298.3m and overpressure zones from 2280.7m to 2285.1m within well 02, also Unloading mechanism from 3246m to 3335m and overpressure zones observed from 3157m to 3201m within well 03, and finally Unloading mechanism observed from 5970ft (1819.7m) to 6677ft (2035.1m) and overpressure zones observed from 4554ft (1388.1m) to 5262ft
(1603.8m) (about 215.79m thick) within well 04. The results obtained in the over-pressured zones occurred in similar depths in parts of the Niger Delta Basin. The areas identified as overpressure zones should be critically examined prior to drilling to avoid blowout. This study has delineated overpressure zones and unloading intervals in the study area using well logs and crossplots.
Petrophysical Analysis And Structural Mapping To Characterize Reservoir Of "Femtop Field", Niger Delta
(Scholarlink Resource Centre, 2020) Oyanameh, O.E.; Ako, B.D.; Ibitoye, A.T.; Fagbemigun, T.S.; Osisanya, O.W.
Unveiling the lithological and reservoir mapping, well correlation, petrophysical analysis and structural
mapping of ʺFEMTOP FIELDʺ offshore Niger Delta,the data used includes;FieldBase Map, Four wells
with Spontaneous Potential (SP), GR Log, Density Logs, Resistivity, andSeismic data in SEG-Y format.
The Petrophysical analysis, Structural interpretation of „„Femtop field‟‟was carried out to identify the reservoirs and map faults from the 3-D seismic volume using Schlumberger (PETRELTM) software (i.e. Well data input, Delineation of lithology and Seismic to well tie). Time and depth structure maps in combination with well logs were used to map four reservoirs (A, B, C,and D), and four horizons (H1 to H4).Calculated petrophysical values of the reservoirs in each of the wells show that each formation has varying degree of petrophysical parameters. The average water saturation in these reservoirs is low, ranging from 27% to 45% with a corresponding hydrocarbon saturation ranging from 56% to 72%. Two major growth faults (F3 and F5), three antithetic faults (F1, F2 and F4) also were mapped. Therefore, structural closures identified as rollover anticlines, are displayed on the time/depth structure maps, suggest probable hydrocarbon accumulation at the downthrown side of the fault F3 attesting to the structural characteristics ofidentified reservoirs within the subsurface of study area. Hence, the integration of well logs with seismic data has largely enhanced the success of the petrophysical analysis and structural mapping in identifying theprobable growth faults and other structural closures responsible for hydrocarbon accumulation within the study area.
Application of Aeromagnetic and Remotely Sensed Data in Mineral Exploration in Parts of Ife-North, Osun State, Southwestern Nigeria
(Department of Chemical Engineering, University of Benin, Benin City, Nigeria, 2022-12) Osisanya, O.W.; Shaibu, O.B.; Abolarin, O.M.; Eyankware, M.O.; Okpala, E.C.
This paper analysed aeromagnetic data over parts of the Ilesa schist belt of Nigeria with a view to assessing the sub surface structural settings that might favour mineralisation in the study
area using aeromagnetic data and satellite remote sensing imageries. The subsurface lineaments were detected and traced out from the maxima of horizontal gradient magnitude, peaks of analytical signal magnitude. The structural trends of the composite lineament map show predominant lineament
directions; NE-SW, NNE-SSW, E-W, and NW-SE. These trends were in agreement with the major regional tectonic trends of Southwestern Nigeria. The interpretation of the aeromagnetic dataset gave an insight into the regional geology and structural trends of the area. The derived lineaments may serve as a
reference for future geological and structural mapping. Based on the information gathered so far, the study area shows potential for presence of both primary and alluvial/eluvial gold deposits.