Oil Sands Exploration in Ijebu-Imushin using Magnetic and Electrical Resistivity Methods

Odunaike, R. K.; Ijeoma, G.C.; Edigbe, R. O.; Babatope, A. H.

doi:10.3997/2214-4609-pdb.241.odunaike_paper1

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Natural bitumens consist mostly of hydrocarbons (paraffinic, naphthenic, and aromatic) but also include various amounts of nonhydrocarbon heterocyclic compounds, which incorporate nitrogen, oxygen, sulfur, and trace metals as substituents [9].…”

Section: Introductionmentioning

confidence: 99%

Delineation of Bitumen Saturated Zones in Agbabu, Southwestern Nigeria, Using an Integrated Geophysical Methods

Adigun¹

2020

JENR

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Delineation of bitumen saturated zones in Agbabu, southwestern Nigeria was carried out using an integrated geophysical methods involving the groundmagnetic and electrical resistivity methods. A total of four magnetic traverses were established in the East-west direction, each covering a total length of 130m. The groundmagnetic results revealed geologic structures favourable to accumulation of bitumen and its occurrence at near-surface. It was also revealed that the bituminous zone trend in the East-West direction of the study area. Two techniques was adopted under electrical resistivity method, the horizontal electrica profiling (HEP) and the vertical electrical sounding (VES). The HEP was used to measure the subsurface electrical variations and lateral extent of bitumen over the study area. Four traverses were established in the North-South direction for HEP and were used to generate electrical profiling curves, which showed low resistivity signatures over the study area. The low resistivity signatures were attributed to the intrusion of saline water to the bituminous zones. Two vertical electrical soundings (VES) were carried out, VES1 and VES2 which were carried out on traverse 1 and traverse 3 had five and six geologic layers respectively. The bitumen saturated zones were found to be within layers three and four and underlained by saline water. The average depth to the bitumen saturated zones was found to be between 3.1m and 23.3m downwards. The near-surface occurrence of natural bitumen and the intrusion of saline water might hinder the feasibility of pure and quality water from the shallow hand-dug wells within the study area.

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Section: Introductionmentioning

confidence: 99%

Delineation of Bitumen Saturated Zones in Agbabu, Southwestern Nigeria, Using an Integrated Geophysical Methods

Adigun¹

2020

JENR

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“…The identification of mineralized pegmatite in the Precambrian basement of southeastern Nigeria was carried out by [3]. Geophysical exploration techniques (magnetic and electrical resistivity) have been employed to map the oil sands deposits so as to obtain information on the subsurface conditions with a view on exploration activities [4]. Geoelectric mapping and characterization of limestone deposits of Ewekoro formation using Schlumberger arrangement was carried out to map both vertical and lateral extents of the deposit and establish the various litho-facies changes of Ewekoro limestone [5].…”

Section: Introductionmentioning

confidence: 99%

Compositional Trend in the Specks of Tantalite, Tourmaline and Beryl Hosted within Complex Basement Rocks Using Geophysical and Geochemical Methods of Exploration

Badmus¹

2013

IOSR-JAP

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Vertical Electrical Sounding (VES) using Schlumberger array was employed in data collection.Data acquisition was carried out along Oyan river bank with a total of twenty-three (23) soundings. This location was divided into two zones: VES 01 -09 and VES 10 -23. Rock samples hosting specks of tantalite, tourmaline and beryl were collected from the artisan pits within the study area and taken for geochemical analysis in the laboratory. The result of geochemical analyses revealed the quality of the solid minerals in terms of mineral compositions (major, trace and rare earth elements) while geophysical field measurement revealed the resistivity values, vertical and lateral distributions and depth of the solid minerals. The range of electrical resistivity values of these solid minerals as revealed by laboratory measurement is 19.4 -31.1Ωm while that of the host rock is 10.0 -100.0Ωm as obtained from field measurements. Specks of tantalite, tourmaline and beryl were suspected to be sparsely distributed in other VES locations except at VES02 and 09, where vast deposits were suspected. Two litho-facies changes were observed and this revealed the economic values of these solid minerals. Black tourmalines, beryl and tantalite samples collected as specks within the study area were of low quality while pink tourmaline is of moderate quality on the basis of the chemical constituents contained.

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Descriptive statistics and probability distributions of volumetric parameters of a Nigerian heavy oil and bitumen deposit

Mosobalaje

Orodu

Ogbe

2018

J Petrol Explor Prod Technol

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The absence of geostatistical modeling of volumetric parameters of the long-discovered Nigerian heavy oil and bitumen deposits is responsible for the inconsistencies surrounding estimates of hydrocarbon-in-place contained therein. An exploratory data analysis (EDA) is a pre-cursor to such modeling. As part of EDA, this work presents the descriptive statistics and probability distributions of the volumetric parameters of a Nigerian heavy oil and bitumen deposit. Raw data from the existing works have been assembled into a database. Using basic principles, porosity have been computed, from the raw data, for several core samples retrieved from the two bituminous horizons in the deposit. The computed database has been partitioned into the two horizons, using depth-to-top and thickness data. Furthermore, this work has conducted detailed analyses and offers robust discussions on the descriptive statistics and probability distributions of the porosity, depth-to-top, and thickness databases. The statistics and distribution curves obtained are observed to exhibit good correlations with existing geologic, stratigraphic, and textural data. An hypothesis suggesting the two horizons belong to same geological population has been formulated and tested at field and well levels; with results affirming the hypothesis. The descriptive statistics and probability distributions obtained offer a significant understanding of the characteristics and features of the available data. In addition, the distributions now become prior information to which reservoir descriptions would be constrained, in the future conditional simulation stage of this work. The correlation of core data obtained here with the existing geologic, stratigraphic, and textural data would promote data integration in the characterization of this deposit.

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Oil Sands Exploration in Ijebu-Imushin using Magnetic and Electrical Resistivity Methods

Cited by 6 publications

References 2 publications

Delineation of Bitumen Saturated Zones in Agbabu, Southwestern Nigeria, Using an Integrated Geophysical Methods

Delineation of Bitumen Saturated Zones in Agbabu, Southwestern Nigeria, Using an Integrated Geophysical Methods

Compositional Trend in the Specks of Tantalite, Tourmaline and Beryl Hosted within Complex Basement Rocks Using Geophysical and Geochemical Methods of Exploration

Descriptive statistics and probability distributions of volumetric parameters of a Nigerian heavy oil and bitumen deposit

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