Thesis Chapters by Mark Ajuwa
This project is aimed at Characterizing reservoirs to determine the petrophysical properties such... more This project is aimed at Characterizing reservoirs to determine the petrophysical properties such as porosity, permeability and fluid saturation. Wire-line logs were employed to identify hydrocarbon bearing sand and compute reservoir petrophysical parameters for hydrocarbon pore volume determination. Six hydrocarbon bearing reservoirs (M1.M4, M5, K1, K4, and K5) were delineated using Petrel 2014 software. Average Petrophysical parameters were estimated as follow; total porosity of 0.12-0.20, permeability of 122-331mD, Hydrocarbon saturation (Sh) range of 0.48-0.68 which have an inverse relationship with water saturation. These values ranges are characteristics of good reservoirs in terms of qualitative and quantitative description, which would make the reservoirs of economic importance. Porosity and Permeability decreased with depth as well as laterally along the wells, the presence of growth faults may have been responsible for the observed lateral variation in thickness of sand across the wells.
Papers by Mark Ajuwa
Journal of Applied Sciences and Environmental Management (JASEM), 2025
Hydrocarbons migrate through porous and permeable rock layers until they are trapped by impermeab... more Hydrocarbons migrate through porous and permeable rock layers until they are trapped by impermeable rock formations, such as shale or salt layers, preventing further migration and creating reservoir. Consequently, the objective of this paper was to characterize the reservoirs of oil-well-OJ1 to identify lithofacies, interpret the depositional environments and sequence stratigraphic units in Field X in the Niger Delta, Nigeria using appropriate standard methods of the well logs. The results reveal a combination of fluvial, deltaic, and shallow marine environments, each playing a vital role in reservoir development. Sequence stratigraphic interpretation revealed that Reservoir A belongs to a Lowstand Systems Tract (LST), while Reservoirs B and C are associated with Transgressive Systems Tracts (TST), marked by retrogradational stacking patterns and maximum flooding surfaces These findings provide key insights into reservoir heterogeneity, connectivity, and compartmentalization, which are crucial for predicting hydrocarbon flow behaviour. Ultimately, this study contributes to improved exploration and production strategies in Field X by characterizing the lithofacies, depositional environments, and sequence stratigraphy of the reservoirs in which the methodology and findings are transferable enabling more effective exploration and development strategies in other geologically similar fields across the basin.
FLOODING, 2022
Flooding is a widespread natural disaster that occurs when water inundates land that is usually d... more Flooding is a widespread natural disaster that occurs when water inundates land that is usually dry. It can occur due to various reasons, including heavy rainfall, melting of snow, coastal storm surges, or the failure of dams and levees. The effects of flooding can be devastating and far-reaching, causing damage to homes, businesses, and infrastructure, leading to loss of life and property. In this paper, we will discuss the causes, effects, and prevention methods of flooding, including examples of significant flooding events.
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Thesis Chapters by Mark Ajuwa
Papers by Mark Ajuwa