DEPARTMENT OF PETROLEUM ENGINEERING

Dimensionless pressure and its derivatives contribute immensely to understanding the reservoir boundaries, efficient well design, production scheduling, and completion for optimum recovery from the reservoir. It is imperative to sufficiently anticipate the
presence of a reservoir border and its approach pattern towards the wellbore since such a boundary poses a constant pressure threat to the production of oil or gas. Dimensionless pressures and their derivatives for a vertical well finished inside two inclined sealing border supports are presented in this study. The inclination angle is 90 degrees or the right angle. As a result, by superimposing the dimensionless pressures of every image well onto a single object well, a generalized dimensionless pressure and derivatives expressions are obtained. Therefore, the principal inputs into the dimensionless pressures and dimensionless pressure derivatives obtained are the distances of each well from the object well and the sign of each image, taken through a counterclockwise path from the object well. Both the object's wellbore skin and its storage are taken into account. Plotting the solutions results in type curves. The results demonstrate how the angle of inclination of the sealing boundary affects dimensionless derivatives and dimensionless pressure. At late dimensionless times, the dimensionless pressures show a distinct gradient. Late dimensionless times result in a collapse of the derivatives to zero. The proximity of the well to the boundaries and the angle of inclination are critical factors determining the rate of this collapse. Notably, wells situated further from the sealing boundary exhibit prolonged periods of stable production compared to those closer to the boundary. These insights have direct implications for designing wells and managing reservoirs with inclined boundaries, potentially enhancing production longevity and efficiency.

Dimensionless pressure and its derivatives contribute immensely to understanding the reservoir boundaries, efficient well design, production scheduling, and completion for optimum recovery from the reservoir. It is imperative to sufficiently anticipate the presence of a reservoir border and its approach pattern towards the wellbore since such a boundary poses a constant pressure threat to the production of oil or gas. Dimensionless pressures and their derivatives for a vertical well finished inside two inclined sealing border supports are presented in this study. The inclination angle is 90 degrees or the right angle. As a result, by superimposing the dimensionless pressures of every image well onto a single object well, a generalized dimensionless pressure and derivatives expressions are obtained. Therefore, the principal inputs into the dimensionless pressures and dimensionless pressure derivatives obtained are the distances of each well from the object well and the sign of each image, taken through a counterclockwise path from the object well. Both the object's wellbore skin and its storage are taken into account. Plotting the solutions results in type curves. The results demonstrate how the angle of inclination of the sealing boundary affects dimensionless derivatives and dimensionless pressure. At late dimensionless times, the dimensionless pressures show a distinct gradient. Late dimensionless times result in a collapse of the derivatives to zero. The proximity of the well to the boundaries and the angle of inclination are critical factors determining the rate of this collapse. Notably, wells situated further from the sealing boundary exhibit prolonged periods of stable production compared to those closer to the boundary. These insights have direct implications for designing wells and managing reservoirs with inclined boundaries, potentially enhancing production longevity and efficiency.

In this study, the effect of two food waste materials, cassava peels, and plantain peels as local environmentally-friendly additives, on the pH, mud weight, viscosity and the fluid loss properties of water based mud was evaluated. The water based mud samples were formulated using bentonite, barite, distilled water with cassava peels and plantain peels in varying weight proportions. Mud weight and pH measurements, viscosity and the volume of fluid loss were measured. Experimental results indicated that at same concentration, the cassava peels had higher rheological properties compared with the plantain peels. However, the muds formed from the combination of cassava and plantain peels have better filtration control properties. Although the viscosity of the drilling fluid produced from the plantain peels were lower than that of the cassava peels, the cassava peels shows a lower fluid loss than the plantain peels. Therefore, with proper quality control efforts, they could be used as a drilling mud additive for exploration and exploitation of oil and gas in Nigeria. It is also hoped that this work will open new market for the use of cassava and plantain waste.

The interaction between drilling fluids and rock surfaces is a critical aspect of drilling operations in the oil and gas industry. This study investigates the multifaceted effects of drilling fluids on rock surface properties, including alterations in surface roughness, wettability, and chemical composition. The research employs a combination of laboratory experiments and analytical techniques to analyse the impact of various drilling fluids, such as
water-based, oil-based, and synthetic muds, on different rock types commonly encountered in drilling operations. The findings reveal that drilling fluids play a significant role in modifying rock surface
characteristics. Water-based fluids tend to increase rock wettability, while oil-based fluids can reduce it. Furthermore, the study explores the implications of these changes on drilling efficiency, wellbore stability, and reservoir connectivity. Understanding these effects is crucial for optimizing drilling fluid selection and designing drilling strategies that enhance overall drilling performance and reservoir productivity. This research contributes valuable insights into the complex interplay between drilling fluids and rock surfaces, aiding in the development of more efficient and sustainable drilling
practices in the energy industry.

Geological Carbon Storage (GCS) presents a promising solution to mitigate greenhouse gas emissions, especially in regions with intensive hydrocarbon activities such as the Niger Delta of Nigeria. This region, characterized by extensive oil and gas production, possesses a complex sedimentary basin structure with deep saline aquifers, depleted oil and gas reservoirs, and suitable cap rocks — all of which are essential for safe and long-term CO₂ storage. This study explores the geological potential of the Niger Delta for carbon storage by evaluating reservoir characteristics such as porosity, permeability, depth, and cap rock integrity. Depleted hydrocarbon reservoirs in the delta, which already have well-characterized geologic and production histories, offer immediate prospects for CO₂ injABection and monitoring. Moreover, saline aquifers within the region’s deep stratigraphic sequences provide additional storage capacity, although they require more extensive characterization. Challenges such as fault reactivation, induced seismicity, and monitoring complexities in densely populated and ecologically sensitive areas are acknowledged. The study also highlights the role of advanced tools like basin modeling, reservoir simulation, and machine learning in optimizing site selection and predicting long-term storage performance. Overall, the Niger Delta holds substantial promise for geological carbon storage as part of Nigeria’s broader climate change mitigation strategy, provided that technical, environmental, and regulatory challenges are addressed through integrated research and stakeholder engagement.

This paper assessed the impact of the oil and gas exploitation of the xyz in the Niger Delta region. The Niger Delta region is best known as a region that sustains much oil exploration and exploitation by the agent of western economic power. The Niger Delta region basin is considered as the mainstay of the Nigeria economy for its significantly high level of the oil reserves. The revenue and incomes generated by the petroleum industry have contributed to
the well-being of Nigeria. There have been cases of oil spillage reported leaving the people completely impoverished with no meaningful alternative source of livelihood .This study was designed to investigate the impact of crude oil exploitation in producing communities by accessing the extent to which it has led to environmental degradation such as heavy metal exposure. This investigation was done by carrying out a comparative study on the producing and non-oil producing communities. To achieve this objective the soil, plant and produced water[effluent] were collected from the oil and non-oil producing communities and analyzed using atomic absorption spectrometry for copper, iron, cadmium, lead, zinc, and magnesium respectively and comparing with WHO standard. The result showed a significant relationship between oil exploitation and environmental degradation in the community. In view of these finding remediation method must be adopted to safeguard the communities. The data will be useful for future monitoring of heavy metal exposure in the communities.

ABSTRACT
The purpose of this project titled “illustrations of measurement while drilling, weight on bit and torque on drilling performance” is to increase drilling efficiency in directional wells, peaks and troughs are characteristic of the nature of the oil and gas industry. With current prices hovering just above $60 per barrel (Bloomberg, 2019), it has never been a better time to increase the efficiency of the drilling process.
This research focuses on the control of surface parameters to understand vibrations in directional wells; this paper discusses actual cases where the use of data from these downhole sensors has improved drilling performance
In conclusion to this research parameters such as WOB and RPM were varied and their effects on depth drilled, response torque, ROP, MSE were studied for vertical well configuration and directional well configurations.

This paper assessed the impact of the oil and gas exploitation of the xyz in the Niger Delta region. The Niger Delta region is best known as a region that sustains much oil exploration and exploitation by the agent of western economic power. The Niger Delta region basin is considered as the mainstay of the Nigeria economy for its significantly high level of the oil reserves. The revenue and incomes generated by the petroleum industry have contributed to the well-being of Nigeria. There have been cases of oil spillage reported leaving the people completely impoverished with no meaningful alternative source of livelihood. This study was designed to investigate the impact of crude oil exploitation in producing communities by accessing the extent to which it has led to environmental degradation such as heavy metal exposure. This investigation was done by carrying out a comparative study on the producing and non-oil producing communities. To achieve this objective the soil, plant and produced water[effluent] were collected from the oil and non-oil producing communities and analyzed using atomic absorption spectrometry for copper, iron, cadmium, lead, zinc, and magnesium respectively and comparing with WHO standard. The result showed a significant relationship between oil exploitation and environmental degradation in the community. In view of these finding remediation method must be adopted to safeguard the communities. The data will be useful for future monitoring of heavy metal exposure in the communities.

This study presents a comprehensive technical analysis of Christmas tree systems in offshore platforms, focusing on their development and completion.The analysis encompasses the design, installation, operation, and maintenance of
Christmas tree systems, highlighting the complex interactions between technical, operational, and environmental factors and Advanced numerical methods.Furthermore, the advance numerical method that was employed is a comprehensive structural integrity analysis of Christmas tree systems in offshoreplatforms using Finite Element Analysis (FEA). The FEA model was developed to simulate the behavior of the Christmas tree system under various operational loads, including internal pressure, external pressure, and valve actuation forces. The results of the analysis showed that the Christmas tree system can withstand the applied loads without compromising its structural integrity. The FEA model was validated by comparing the results with analytical solutions and experimental data. The study demonstrates the effectiveness of FEA in evaluating the structural integrity of Christmas tree systems and provides valuable insights for optimizing their design and operation.