Aeromagnetic modelling in evaluating the hydrocarbon potential of the basement of the Calabar Flank, southeastern Nigeria

Obi, DA; Okereke, CS; Egeh, UE; Olagundoye, OO

doi:10.4314/jmg.v44i2.49026

Cited by 4 publications

(9 citation statements)

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“…7) has shallow sources depths between 1.0 km and 3.0 km and deeper sources between 4.0 km-12.0 km. Similar works have been done by different authors [19,12,14,16]. There is a general increment in thickness of sediments from Benin River, Warri, Kwale and Aboh towards areas around Forcados, Burutu, Ahoada and Patani.…”

Section: Discussion Of Resultssupporting

confidence: 80%

“…Also, the merged digitized processed file for the entire data set was used in SURFER 9.0 software to produce the colored total field intensity map. The merged grid file produced from P2GRD software was used by in the following software PLUGGRID, PREP5, FFTFIL, F_RTP and DE-PREP5 to produce the reduction to pole map [12,2,13,14,15,16] and shown in Figs. 3a, 3b, and 4.…”

Section: Discussionmentioning

confidence: 99%

“…Also, the horizontal gradient magnitude depth analysis was performed using the HDEP software to generate the horizontal gradient magnitude (HGM) [12,13,14] and shown in Fig. 7.…”

Section: Discussionmentioning

confidence: 99%

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Modeling Magnetic Basement in Relationship to Hydrocarbon Habitats in the Central Niger Delta, Nigeria

Obi

Ilozobhie

Lebo

et al. 2017

JGEESI

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This work was carried out in collaboration between all the authors. Author DAO designed the study, performed the modeling and wrote the first draft. Author AJI performed the data reduction and analysis. Author SEL purchased the data, analyzed the data using filtering methods. Author EZ analyzed the data using modeling methods and final proof reading. All authors read and approved the final manuscript.

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Section: Discussion Of Resultssupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

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Modeling Magnetic Basement in Relationship to Hydrocarbon Habitats in the Central Niger Delta, Nigeria

Obi

Ilozobhie

Lebo

et al. 2017

JGEESI

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“…Scholar who has worked on aeromagnetic data on local scales reported varying depth values and lineament trend direction. [1,2,3,4]. This study is on a regional scale covering the covering the entire southern Nigeria basins aimed at revealing the subsurface structural fracture trends that characterize sedimentation processes within these basins.…”

Section: Introductionmentioning

confidence: 99%

Structural Analysis Using Upwards Continuation / Lineaments Trends Analysis on Aeromagnetic Data: A Case Study of Southern Nigeria Basins

Obi

George

2018

JGEESI

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Twenty aeromagnetic maps were used for this study, which covers parts of Southern Sedimentary basins and their adjourning basement flanks in Nigeria. The aeromagnetic maps were acquired from the Nigeria Geological Survey Agency on a scale of 1: 100,000. The data was digitized manually along flight lines and a total of 16,689 data points obtained. The information was processed using computer techniques such as map merging, reduction to pole, polynomial filtering, upwards continuation, manual trend analysis and depth estimates. The results from upwards continuation reveals five major deep-seated anomalous fracture trends which could characterize major depositional centers. Lineaments trend results indicate dominant NE -SW trends within the Niger Delta, Mamfe basin, Lower Benue Trough, and Anambra basins, while the Calabar Flank

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“…The Afikpo -Ugep area is part of the Lower Benue Trough which lies within latitude 5 o .5'.00'' -6 o .o'.00''N and longitude 7 o .5'.00'' -8 o .5'.00'' E. Major and minor lineaments trend analysis, depth of sediments thickness and subsurface basin configuration was done using potential field softwares from the united states Geological surveys(USGS). Several geophysical work has been done on a regional scale using gravity and magnetic data (Ofoegbu, (1991), Obi, et. al (2008), Ajai, et.…”

Section: Introductionmentioning

confidence: 99%

Aeromagnetic mapping of basement relief features in parts of Lower Benue Trough (Afikpo – Ugep): Implications on hydrocarbon prospectivity south – east, Nigeria

A.¹,

Obeten²

2017

Glo Jnl Pure Appl Sci

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Two (2) aeromanetic maps on a scale of 1:100,000 covering parts of the Lower Benue Trough (Afikpo sheet 313 and Ugep sheet314) were digitized manually along a total of 70 profiles lines to obtain 5422 data points. The digitized values were contoured to obtain the total magnetic field intensity map of the study area.The merged data was processed and filtered using diferent softwares to perform anomaly separation techniques to obtain the residual fields,petters half width and maximum slope methods were analysed to obtain depths to basements, also lineaments trend and 3-D surface plots were analsed. The results indicate a dominant NE-SW orientation, four faults were also identified mostly at the edges of sediments-basement contacts. The depth to magnetic basement map reveals two identified sub-basins within two structural highs. The Afikpo area has a structural high (afikpo anticlinorium) with depth ranging from 0.8km -1.8km which is flanked by a depression (graben) 2.0km -4.0km, this sub-basin extends between Abanwan to Amagu (ebonyi state) and extents to Biakpan (cross river state).also another structural high occurs between Iyamoyong and Okumeritit (cross river state) 0.8km -1.8km as horst, this is flanked by another depression (graben) within the Mkpani -Ugep area (cross river state) 2.0km -3.0 km in sediments thickness. Hydrocarbon prospectivity within the study area should be within the identified Grabens that has shown greater sediments accumulation while the areas identified as horst has less potentials for hydrocarbon prospectively.

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Aeromagnetic modelling in evaluating the hydrocarbon potential of the basement of the Calabar Flank, southeastern Nigeria

Cited by 4 publications

References 0 publications

Modeling Magnetic Basement in Relationship to Hydrocarbon Habitats in the Central Niger Delta, Nigeria

Modeling Magnetic Basement in Relationship to Hydrocarbon Habitats in the Central Niger Delta, Nigeria

Structural Analysis Using Upwards Continuation / Lineaments Trends Analysis on Aeromagnetic Data: A Case Study of Southern Nigeria Basins

Aeromagnetic mapping of basement relief features in parts of Lower Benue Trough (Afikpo – Ugep): Implications on hydrocarbon prospectivity south – east, Nigeria

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