Geologist with a demonstrated history of working in the education and geology sectors. Skilled in Mineral Exploration, Field Mapping, Petrology, Paleo-Biology, Biostratigraphy, ArcGIS software, Microsoft Word, Excel, and PowerPoint, Public Speaking, and Biostratigraphy. Strong research professional with a Bachelor of Science (BSc) focused in Geology from university of Nigeria, Nsukka. Phone: +2348168970752 Address: Lagos State, Nigeria
The dielectric constant of a material affects the way in which electromagnetic wave passes throug... more The dielectric constant of a material affects the way in which electromagnetic wave passes through it. Since the dielectric constants of oil and water are different, the behaviour of electromagnetic waves in reservoir rocks is of interest. Based on dielectric measurements, two classes of tools currently exist viz.: very high, and low frequency tool. They all use small antenna arrays to send electromagnetic waves through the formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of preexisting logs. The tool uses electromagnetic wave to detect water-filled porosity.
Field outcrop and petrographic data were used to infer the geologic history and depositional envi... more Field outcrop and petrographic data were used to infer the geologic history and depositional environment of the sediments in Akpagher, in Gboko Local Government Area of Benue State, Nigeria. The method of investigation involved field studies and sample collection from different outcrop locations. This was followed by laboratory studies involving granulometric and petrographic analyses. The textural analysis data indicates that the sandstones are fine grained with mean size of 2.0 to 2.3mm. The sorting ranges from 1.49 to 1.51 which implies very poorly sorted to poorly sorted sediments. The depositional environment discrimination and bivariate plots reveal a fluvially influenced shallow marine environment. Also, the presence of bioclasts of oscracods and molluscs in the limestones indicates shallow marine and low energy depositional environment. This was gotten from petrographic analysis on the limestones, which also reveals micrite as the dominant matrix with skeletal fragments, pelloids, and recrystallized bioclasts. The dominance of mud matrix in the limestones indicates proximity to shoreline and low energy, shallow marine deposits. The depositional environment is thus inferred to be probably lagoonal.
The dielectric constant of a material affects the way in which electromagnetic wave passes throug... more The dielectric constant of a material affects the way in which electromagnetic wave passes through it. Since the dielectric constants of oil and water are different, the behavior of electromagnetic waves in reservoir rocks is of interest. Based on dielectric measurements, two classes of tools currently exist viz.: very high, and low frequency tool. They all use small antenna arrays to send electromagnetic waves through the formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of pre-existing logs. The tool uses electromagnetic wave to detect water-filled porosity.
The dielectric constant of a material affects the way in which electromagnetic wave passes throug... more The dielectric constant of a material affects the way in which electromagnetic wave passes through it. Since the dielectric constants of oil and water are different, the behaviour of electromagnetic waves in reservoir rocks is of interest. Based on dielectric measurements, two classes of tools currently exist viz.: very high, and low frequency tool. They all use small antenna arrays to send electromagnetic waves through the formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of preexisting logs. The tool uses electromagnetic wave to detect water-filled porosity.
Field outcrop and petrographic data were used to infer the geologic history and depositional envi... more Field outcrop and petrographic data were used to infer the geologic history and depositional environment of the sediments in Akpagher, in Gboko Local Government Area of Benue State, Nigeria. The method of investigation involved field studies and sample collection from different outcrop locations. This was followed by laboratory studies involving granulometric and petrographic analyses. The textural analysis data indicates that the sandstones are fine grained with mean size of 2.0 to 2.3mm. The sorting ranges from 1.49 to 1.51 which implies very poorly sorted to poorly sorted sediments. The depositional environment discrimination and bivariate plots reveal a fluvially influenced shallow marine environment. Also, the presence of bioclasts of oscracods and molluscs in the limestones indicates shallow marine and low energy depositional environment. This was gotten from petrographic analysis on the limestones, which also reveals micrite as the dominant matrix with skeletal fragments, pelloids, and recrystallized bioclasts. The dominance of mud matrix in the limestones indicates proximity to shoreline and low energy, shallow marine deposits. The depositional environment is thus inferred to be probably lagoonal.
The dielectric constant of a material affects the way in which electromagnetic wave passes throug... more The dielectric constant of a material affects the way in which electromagnetic wave passes through it. Since the dielectric constants of oil and water are different, the behavior of electromagnetic waves in reservoir rocks is of interest. Based on dielectric measurements, two classes of tools currently exist viz.: very high, and low frequency tool. They all use small antenna arrays to send electromagnetic waves through the formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of pre-existing logs. The tool uses electromagnetic wave to detect water-filled porosity.
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Papers by Daniel K Bassey
formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected
by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior
knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing
water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of preexisting logs. The tool uses electromagnetic wave to detect water-filled porosity.
sample collection from different outcrop locations. This was followed by laboratory studies involving granulometric and petrographic analyses. The textural analysis data indicates that the sandstones are fine grained with mean size of 2.0 to 2.3mm. The sorting ranges from 1.49 to 1.51 which implies very poorly sorted to poorly sorted sediments. The depositional environment discrimination and bivariate plots reveal a fluvially
influenced shallow marine environment. Also, the presence of bioclasts of oscracods and molluscs in the limestones indicates shallow marine and low energy depositional environment. This was gotten from petrographic analysis on the limestones, which also reveals micrite as the dominant matrix with skeletal fragments, pelloids, and recrystallized bioclasts. The dominance of mud matrix in the limestones indicates proximity to shoreline and low energy, shallow marine deposits. The depositional environment is thus inferred to be probably lagoonal.
formation. Traditionally, the measurement of the conductivity or resistivity of a formation has been one of the main surveys performed in a borehole, primarily to determine water saturation. However, a second electrical characteristic of the formation can be determined – the dielectric permittivity. Dielectric devices can be used to determine formation saturation from data dependent on the dielectric permittivity. The basic measurements are of propagation time and attenuation of an electromagnetic wave as it passes through a specific interval of formation. As the propagation time in water is higher than in hydrocarbons or minerals, the measurement is primarily affected by the water-filled pore space of rocks. This is in contrast to the nuclear-porosity tools affected
by the total porosity. In addition, for a wide range of salinities, the propagation time in water is practically constant and so saturation estimations can be made without prior
knowledge of the resistivity of the formation water. When other open-hole log data are available, it is possible to distinguish between oil, gas, and water with unknown changing
water salinity. There are errors associated with conventional porosity tools. The dielectric dispersion logging tool is a relatively new tool that overcomes major problems of preexisting logs. The tool uses electromagnetic wave to detect water-filled porosity.
sample collection from different outcrop locations. This was followed by laboratory studies involving granulometric and petrographic analyses. The textural analysis data indicates that the sandstones are fine grained with mean size of 2.0 to 2.3mm. The sorting ranges from 1.49 to 1.51 which implies very poorly sorted to poorly sorted sediments. The depositional environment discrimination and bivariate plots reveal a fluvially
influenced shallow marine environment. Also, the presence of bioclasts of oscracods and molluscs in the limestones indicates shallow marine and low energy depositional environment. This was gotten from petrographic analysis on the limestones, which also reveals micrite as the dominant matrix with skeletal fragments, pelloids, and recrystallized bioclasts. The dominance of mud matrix in the limestones indicates proximity to shoreline and low energy, shallow marine deposits. The depositional environment is thus inferred to be probably lagoonal.