Silica nanoparticles (SNPs) have been widely utilized in the oil and gas industry to improve different processes, such as in drilling operations, well cementing job, workover operations, wastewater remediation, and most importantly enhance oil recovery. Due to their particle sizes which ranges between 1 and 100 nm, large specific surface area, high dispersibility and tunable physico-chemical properties, they have the capability to alter the wettability of the reservoir rock and reduce the int...
ABSTRACT Estimating the gas/VOC emissions from oil and gas producing equipments has been a goal which the industry and regulatory agencies have spent a great deal of study and effort to contend with. This research estimated the flashing losses of gas/VOC emission from conventional atmospheric storage tanks to the atmosphere using Vasquez-Beggs Equation (VBE). Using VBE confirmed observed losses experienced in the industry as is represented in a graph showing the losses. It went further to qu...
Abstract Effects of liquid holdup on hydrocarbon production in tapered tubing string using Niger Delta fluid properties was undertaken in this work. Oil reservoir fluids flow to the surface as a multicomponent fluid in pipes during production. Multiphase flow occurs due to the density of different phases involved in reservoir fluid and each fluid phase flow at different velocity. In this study, analytically developed equations and existing fluid correlations were used for determination of pr...
ABSTRACT The purpose of this study is to develop an innovative technique for optimized gas lift design for marginal fields of the Niger Delta. This study used well data from mature fields located southwest of the Niger Delta to develop optimized gas lift design techniques using the single point continuous gas lift approach. A total of fifty-nine (59) wells from the fields were selected for preliminary screening as potential gas lift candidates. The screening process involved; reviewing well ...
ABSTRACT Simplified predictive numerical models have been developed for diffusion rate of crude oil spilled into Niger Delta soils. The proposed model equations were developed using Fourier transformation, and Green’s function. The induction principles as well as the indicial matrix method of dimensional analysis were adopted in determining the functional parameters that could possibly influence their diffusion rates. These mathematical models correctly predict one – dimensional longitud...
ABSTRACT New Biodegradable drilling fluids were developed using Brachystegia eurycoma (achi), Detarium microcarpum (ofo) and Pleurotus (osu). The drilling properties such as yield point, apparent viscosity, low shear rate yield point and fluid loss were determined.The field polymer muds that are currently in use namely; PAC-R and PAC-L were formulated and used as control samples to the new proposed product. Herschel –Buckley model was used to obtain the yield stress. Cutting transport rati...
ABSTRACT Comparative economic analysis of the use of compressed natural gas (CNG) and the use of AGO for power generation was presented. The data for costs of constructing and running CNG-powered vehicles were obtained for the study. Separate economic analyses of running the CNG-powered vehicles and running AGO vehicles were performed. The initial capital cost for CNG project amounted to N4.31 million and that for diesel was N3.60 million while the annual operating cost for CNG is N1.47 mill...
ABSTRACT Flow assurance is the efficient and successful flow of fluids in pipes. Some of the flow assurance challenges that can be encountered include hydrate formation, which is prevalent offshore, sand deposition, wax precipitation, scale deposits, or emulsion problems. In onshore production facilities in the Niger delta, wax deposition is the major challenge to efficient fluid flow. Consequently, it has been the focus of research to proffer effective predictive control measures to a probl...
ABSTRACT Coning tendencies in oil rim reservoirs pose serious hindrance to optimizing oil production in the thin oil beds as unwanted fluids tend to replace the oil in the production stream, which invariably limits the ultimate oil recovery. In this study, a semi-analytical method of estimating critical production rate (qoc) and optimum horizontal well placement (hopt) was developed for reservoirs with thin oil zones sandwiched between gas cap and bottom water. Also, proxy models was generat...
ABSTRACT Rate decline analysis is an essential tool in predicting reservoir performance and formation property estimation. The use of historical production data to predict future performance is the focus of the empirical domain of decline analysis while the theoretical domain focuses on the use of such data to estimate formation properties. A number of attempts have been made to establish the theories of rate decline in solutiongas drive reservoirs. Such attempts have established the theoreti...
Abstract Mitigation against increasing carbon dioxide, CO2, in the atmosphere is uppermost in environmental research due to its negative effects and the most effective approach is in the area of underground carbon storage. In this research, a model was developed to study the possible alteration of porosity and permeability during CO2 injection to Kwale sandstone reservoir, Kwale shales, Imeri oil sand and Ota Kaolinitic clay. The proposed model combined the Timur model irreducible water satu...
ABSTRACT Rate decline analysis is an essential tool in predicting reservoir performance and formation property estimation. The use of historical production data to predict future performance is the focus of the empirical domain of decline analysis while the theoretical domain focuses on the use of such data to estimate formation properties. A number of attempts have been made to establish the theories of rate decline in solutiongas drive reservoirs. Such attempts have established the theoret...
ABSTRACT Liquid column that accumulates in the wellbore leading to the reduction or completely preventing the production of gas well is called liquid loading. This is one phenomenon that is essential because in other to optimize the recovery of hydrocarbon from the gas reservoir and to prevent the occurrence of liquid loading, pressure differential as a function of flow rate across the valves must not be neglected. Several options have been employed in well completions to predict liquid load...
ABSTRACT Qualitative and quantitative predictions of reservoir properties and geometries beyond well control are vital to understanding the intrinsic characteristics of subsurface formations. Using well log data, 3D Seismic data, Geostatistical simulations, reservoir characterization, modeling via multivariate analysis was carried out for and lateral predictions on data set obtained from Liaohe field, western sag, Bohai Bay, Northern China. This sag is an intra-cratonic basin of Archean to Re...
ABSTRACT Estimating the gas/VOC emissions from oil and gas producing equipments has been a goal which the industry and regulatory agencies have spent a great deal of study and effort to contend with. This research estimated the flashing losses of gas/VOC emission from conventional atmospheric storage tanks to the atmosphere using Vasquez-Beggs Equation (VBE). Using VBE confirmed observed losses experienced in the industry as is represented in a graph showing the losses. It went further to q...