Series-1 (Jul. – Aug. 2026) Jul. – Aug. 2026 Issue Statistics
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| Paper Type | : | Research Paper |
| Title | : | Lateral Variations In Rock Properties Revealed By Acoustic Impedance Inversion: A Case Study Of The Early Palaeogene Heimdal Formation, Northern North Sea |
| Country | : | Nigeria |
| Authors | : | M. Bello || A. M. Kaura || A. Salihu |
 |
: | 10.9790/0990-1404010113  |
Abstract: This study applies post-stack acoustic impedance inversion to investigate the lateral variability of reservoir properties within the Paleogene Heimdal Formation in the northern North Sea. The analysis utilised 3D migrated partial stack seismic data, 2D CDP gathers, and petrophysical data from five wells penetrating the Heimdal Formation. Well-log derived acoustic impedance models were integrated with seismic data to generate acoustic impedance, velocity and porosity volumes. The inversion results showed that the acoustic impedance values varies from approximately 2000 to 5700 m/s*g/cm3indicating significant spatial heterogeneity within the reservoir. The relativity......
Keywords: Acoustic impedance inversion, Porosity prediction, Heimdal Formation, Paleogene, Seismic inversion, Northern North Sea
[1]. Adeoti, L., Bako, M. E., Adeogun, O. Y., Anukwu, G. C., & Adegbite, T. J. (2023). Po Rosity Prediction Using 3d Seismic Genetic
Inversion At F3 Block, Netherlands. Ife Journal Of Science, 25(1).
[2]. Ahmadi, Z. M., Sawyers, M., Kenyon-Roberts, S., Stanworth, C. W., Kugler, K. A., Kristensen, J., & Fugelli, E. M. G. (2003).
Paleocene. In D. Evans, C. Gra Ham, A. Armour, & P. Bathurst (Eds.), The Millennium Atlas: Petroleum Geology Of The Central
And Northern North Sea (Pp. 235–259). Geological Society Of London.
[3]. Alistair, R. B. (1992). Technologies In Reservoir Geophysics. In R. E. Sheriff (Ed.), Reservoir Geophysics. Society Of Exploration
Geophysicists.
[4]. Avseth, P., Mukerji, T., Jørstad, A., Mavko, G., & Veggeland, T. (2001). Seismic Reservoir Mapping From 3-D Avo In A North
Sea Turbidite System. Geophysics,
[5]. Avseth, P., Mukerji, T., Mavko, G., & Tyssekvam, J. A. (2000). Rock Physics And Avo Analysis For Lithofacies And Pore Fluid
Prediction In A North Sea Oil Field. The Leading Edge, 20, 429–434.
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| Paper Type | : | Research Paper |
| Title | : | Fluid Substitution Analysis Of The Heimdal Formation Reservoir, Northern North Sea: Implications For Seismic Reservoir Characterisation And Hydrocarbon Prediction |
| Country | : | Nigeria |
| Authors | : | M. Bello || G. Mohammed || M. A. Yusuf |
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: | 10.9790/0990-1404011422 |
Abstract: Fluid substitution modeling is an essential rock physics technique for evaluating the seismic response of reservoirs under varying pore-fluid conditions. This study investigates the influence of fluid substitution on the elastic properties of the Heimdall Formation reservoir in the Northern North Sea using Gassmann's fluid substitution theory. Well log data comprising compressional-wave velocity (Vp), shear-wave velocity (Vs), density, porosity......
Keywords: Fluid substitution, Heimdall Formation, Northern North Sea, Gassmann equation, rock physics, reservoir characterization
[1].
Avseth, P., Mukerji, T., Jørstad A., Mavko G., And Veggeland, T., (2001a). Seismic Reservoir Mapping From 3-D AVO In A North Sea Turbidite System. Geophysics, Vol. 66, 1157-1176.
[2].
Avseth, P., Mukerji, T., Mavko, G., And Tyssekvam, J. A., (2001b). Rock Physics And AVO Analysis For Lithofacies And Pore Fluid Prediction In A North Sea Oil Field. The Leading Edge, 20, 429-434.
[3]. Avseth, P., Mukerji, T. And Mavko, G. (2010). Quantitative Seismic Interpretation. Cambridge University Press.
[4]. Mavko, G., Mukerji, T., And Avseth, P. (2005). Quantitative Seismic Interpretation: Applying Rock Physics Tools To Reduce Interpretation Risk. Cambridge University Press.
[5]. Batzle, E. G. And Wang, Z. (1992). Seismic Properties Of Pore Fluids. Geophysics, 57(11), 1396–1408
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| Paper Type | : | Research Paper |
| Title | : | Physical And Hydrogeochemical Analysis Of Groundwater In Bolori Ward Of Maiduguri, Borno State, Northeastern Nigeria |
| Country | : | India |
| Authors | : | Alkali, M. A || Adamu, S || Muhammad, M. K || Boyoma, A. M || Makinta, A. M. || Giade, A. M. || Ali, K || Shettima M |
|
: | 10.9790/0990-1404012330 |
Abstract: Groundwater is useful for various applications depending on its chemistry. Surface and subsurface water are both important source of water for domestic, agricultural and industrial uses. The physico-chemical parameters of groundwater of the study area which falls within Maiduguri, the capital city of Borno State, Northeastern Nigeria were studied to ascertain the water quality. A total of twenty (20) water samples were directly collected from Motorized and Hand pump Boreholes within the study area. The GPS coordinates were recorded and the physical parameters of Temperature, Total dissolved solids, electrical conductivity and pH were measured in-situ for each sample......
Keywords: Groundwater, Physico-chemical, Bolori, Dental caries
[1].
Amadi, P. A., Ofoegbu, C. O. And Morrison, T. (2006). Hydrogeochemical Assessment Of Groundwater Quality In Parts Of The Niger Delta, Nigeria. Environmental Geology And Water Science. 14, 195-202.
[2].
Avbovbo, A. A. Ayoola, E. O. And Osahon, G. (1986). Depositional And Structural Styles In The Chad Basin Of Northeastern Nigeria. AAPG Bull 70:1787-1 798.
[3].
Burke, K. (1976). The Chad Basin: An Active Intra-Continental Basin. Tectonophysics 36:197 206.
[4].
Carter, J. D, Barber, W. Tait, E. A. And Jones, G. P. (1963). The Geology Of Parts Of Adamawa, Bauchi And Borno Provinces In Northeastem Nigeria. Geol Surv Niger Bull 30:108pp.
[5].
Goni, I. B. (2006) Estimating The Sedimentary Thickness Of Bornu Basin Using Spectral Analysis Of High Rsolution Aeromagnetic Data..
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| Paper Type | : | Research Paper |
| Title | : | Amplitude Variation With Offset (AVO) Analysis For Lithology And Fluid Characterisation Of The Heimdal Formation Reservoir, Northern North Sea |
| Country | : | Nigeria |
| Authors | : | M. Bello || G. Mohammed || M. A. Yusuf || Y. Abdulmumin |
|
: | 10.9790/0990-1404013139 |
Abstract: This study applies AVO analysis to the Paleogene Heimdal Formation reservoir in the northern North Sea to predict lithology, pore fluids and seismic properties at interfaces in the Heimdal Formation sands. The study integrates well-log data, prestack Common Depth Point (CDP) gathers, and rock physics analysis to evaluate elastic property contrasts across key reservoir interfaces. AVO modelling was performed using Shuey's approximation, while intercept-gradient analysis, elastic contrast analysis, and supergather enhancement were employed to......
Keywords: Amplitude Variation with Offset (AVO); Heimdal Formation; Northern North Sea; Rock Physics; Elastic Impedance; Reservoir Characterization; Pre-stack Seismic Analysis
[1].
Avseth, P., Mukerji, T., Jørstad A., Mavko G., And Veggeland, T., (2001a). Seismic Reservoir Mapping From 3-D AVO In A North Sea Turbidite System. Geophysics, Vol. 66, 1157-1176.
[2].
Avseth, P., Mukerji, T., Mavko, G., And Tyssekvam, J. A., (2001b). Rock Physics And AVO Analysis For Lithofacies And Pore Fluid Prediction In A North Sea Oil Field. The Leading Edge, 20, 429-434.
[3]. Avseth, P., Mukerji, T. And Mavko, G. (2009). Quantitative Seismic Interpretation. Cambridge University Press.
[4]. Mavko, G., Mukerji, T., And Avseth, P. (2005). Quantitative Seismic Interpretation: Applying Rock Physics Tools To Reduce Interpretation Risk. Cambridge University Press.
[5]. Batzle, E. G. And Wang, Z. (1992). Seismic Properties Of Pore Fluids. Geophysics, 57(11), 1396–1408..
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- Abstract
- Reference
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| Paper Type | : | Research Paper |
| Title | : | Rock Physics Uncertainty Analysis For Fluid Discrimina-tion In The Paleocene Heimdal Formation Reservoir, Northern North Sea |
| Country | : | Nigeria |
| Authors | : | M. Bello || G. Mohammed || M. A. Yusuf || Y. Abdulmumin || A. Salihu |
|
: | 10.9790/0990-1404014050 |
Abstract: Reservoir fluid discrimination from seismic data is inherently uncertain because of the overlap in elastic prop-erties between lithologies and pore-fluid types. This study evaluates the capability of statistical rock physics to characterize fluid-related changes within the Paleocene Heimdal Formation turbidite reservoir in the northern North Sea. Five exploration wells, 2D common-depth-point (CDP) gathers, 3D migrated partial-stack seismic volumes, and......
Keywords: Heimdal Formation; Rock physics; Monte Carlo simulation; Probability density function; Reser-voir uncertainty; Fluid discrimination; Northern North Sea
[1].
Ahmadi, Z. M., Sawyers, M., Kenyon-Roberts, S., Stanworth, C. W., Kugler, K. A., Kristensen, J., & Fugelli, E. M. G. (2003). Paleocene. In D. Evans, C. Graham, A. Armour, & P. Bathurst (Eds.), The Millennium Atlas: Petroleum Geology Of The Central And Northern North Sea (Pp. 235–259). Geological Society Of London.
[2].
Avseth, P., Mukerji, T., Jørstad A., Mavko G., And Veggeland, T., (2001a). Seismic Reservoir Mapping From 3-D AVO In A North Sea Turbidite System. Geophysics, Vol. 66, 1157-1176.
[3].
Avseth, P., Mukerji, T., Mavko, G., And Tyssekvam, J. A., (2001b). Rock Physics And AVO Analysis For Lithofacies And Pore Fluid Prediction In A North Sea Oil Field. The Leading Edge, 20, 429-434.
[4]. Avseth, P., Mukerji, T. And Mavko, G. (2009). Quantitative Seismic Interpretation. Cambridge University Press.
[5].
Avseth, P., Flesche, H., Wijngaarden, A., & Mavko, G. (2003). AVO Classification Of Lithology And Pore Fluids Constrained By Rock Physics Depth Trends. The Leading Edge, 28, 1004–1011..