Research Papers/Topics in Petroleum Engineering

Diagnosis Of Water Production Using Artificial Neural Network Models

ABSTRACT A data-driven approach to solving the problem of excess water production was the focus of this study. In this research, several reservoir models were simulated for 26 years, and data obtained after simulation was used to develop two artificial neural network models to predict the water cut for various producers. The first 22 years of data obtained from simulation was used to train the first neural network model, and the model was then used to forecast the water cut for the last ...

Development Of Drilling Fluid From Biomaterials

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 ...

An Approach To Waterflood Optimization: Case Study

ABSTRACT Waterflooding is the most dominant secondary oil recovery method and its popularity is mainly due to the general availability of water, the relative ease of injecting water, the ability of water to spread easily through an oil-bearing formation and the efficiency of water in displacing oil. However, waterflooding is not without its challenges. Factors such as reservoir heterogeneity, lateral and vertical variations in permeability and presence of discontinuities greatly affect t...

Optimization Of Strategies For Natural Gas Utilization: Case Study Of The Niger Delta

ABSTRACT Nigeria is endowed with huge proven gas reserves estimated to be 184 trillion cubic feet (Tcf). It ranks as the 7th holder of natural gas reserves in the world, and the largest in Africa. Nigeria also flares more natural gas than any other country; it accounts for 12.5% of the world‟s annual gas flared and it wastes $2.0 billion annually by flaring gas associated with crude oil extraction. There is crucial need to monetize the gas reserves, reduce gas flaring and its environme...

Effect Of Linear Drift On Radial Transport Of Tracer In Homogeneous Porous Media

ABSTRACT Analytical models can be valuable tools to investigate solute transport in porous media. The application of analytical solutions is limited by the perception that they are too cumbersome to derive while their implementation rests on assumptions that are too restrictive. This research is aimed at understanding the effect of linear drift on radial transport of tracer in porous media. It provides an analytical Solution that expresses the Concentration Distribution around the sourc...

Critical Evaluation Of Infill Well Placement And Optimization Of Well Spacing Using The Particle Swarm Algorithm

ABSTRACT Optimizing the placement of new wells and well spacing is a vital issue in oil field development. Drilling infill wells is one way to maximize the recovery of oil from reservoirs. The problem of infill well placement is challenging because many different well scenarios must be evaluated when undertaking the optimization program and very often, the variables that affect reservoir performance are nonlinearly correlated with some degree of uncertainty. Using computational algorith...

Thermal Transient Testing Using Tds Technique

Abstract In the estimation of most reservoir parameters in well test, the reservoir is assumed to be isothermal which is practically not true due to the fact that there are heat sources due to friction in the wellbore, works done by the drill bit and in thermal recovery. Although, this temperature change is small, it can serve other beneficial purposes in the reservoir and wellbore. The research work used the temperature change to estimate permeability, skin factor and initial temperatu...

The Study Of Hydrodynamics Of Slug Flow In 10 Degrees Inclined Pipe Using Electrical Capacitance Tomography Data

ABSTRACT Slug flow along slightly inclined horizontal pipes is a major problem in gas-liquid transportation, it is very pronounced in chemical, oil and gas processing industries. In reality, there is no absolute horizontal pipe due to the undulating nature/ Topography of the laid pipe terrains. Very little research has been done in this area because of lack of experimental data. This work is proposed to use raw experimental data from 10 degrees inclined horizontal pipe to analyze the fl...

Determining Individual Characteristics Of A Twolayered Reservoir Using The Tds Technique.

ABSTRACTThe first part of this study discussed in details the two major model that was developed for the study of a multilayer reservoir system. They are the Dual permeability model proposed by Bourdet and the semipermeability wall model proposed by Gao. The pressure response of a crossflow system is observed in three stages; it behaves as a commingled system in the early stage and then as a single layer homogenous system in the late stage. There is a transition stage, which connects the...

Estimation Of Drilling Wastes – An Environmental Concern While Drilling Oil And Gas Wells

ABSTRACT Despite its numerous benefits the search and production of crude oil poses a lot of dangers to the environment. Among these include land, water and air pollution. Prominent among the major sources of E&P waste is drilling operations which form the second largest source of waste after production activities. The major drilling wastes are drill cuttings, drilling mud and obnoxious gas emissions. These wastes are introduced into the environment through intentional as well as accide...

Evaluating Uncertainty In The Volumes Of Fluids In Place In An Offshore Niger Delta Field

ABSTRACT The purpose of this work is to evaluate the uncertainty in the volumes of fluids in place in Fault Block A (Segment 3) of the G-1 Sands in the OND field located offshore Niger Delta. The evaluation was performed in three parts: (1) building of the static model and division into three hydrocarbon zones with reference to the oil-water-contact (OWC); (2) estimating the distribution of petrophysical properties such as porosity, water saturation and net-to-gross ratio in the reservo...

Numerical Simulation Of Enhanced Oil Recovery Using A Gum Arabic Polymer

ABSTRACT Oil reserves are now located in hard-to-reach locations. This, combined with low oil prices, makes drilling for new reserves very expensive and risky. Enhanced oil recovery, which increases the amount of oil that can be recovered from a reservoir, should therefore be considered. This work uses numerical simulation to determine the suitability of gum arabic as a polymer for EOR operations. This was done by matching core-flooding experiments using Eclipse. Simulation gave a water...

Quantifying The Risks Of Wellbore Failure During Drilling Operations Using Bayesian Algorithm

ABSTRACT The wellbore integrity plays an important role in petroleum operations like drilling, well completion and production. Caliper, Electrical image logs, Acoustic televiewers (ATV) and Optical televiewers (OTV) are some of the devices currently used in the industries to identify breakouts. However, these techniques are restricted in applications. For instance; caliper sometimes indicates the effect of drill spiral grooves as borehole enlargement zones, poor resolution, and complica...

Evaluation Of In-Fill Well Placement And Optimization Using Experimental Design And Genetic Algorithm

ABSTRACT Determination of optimal well locations for infill drilling is a challenging task because engineering and geologic variables affecting reservoir performance are often nonlinearly correlated and have some degree of uncertainty attached to them. Numerical models which are the basis of well placement decisions rely on data that are uncertain, which in turn translate to uncertainty in our numerical simulation forecasts. The objective of this research is to employ an efficient optim...

Combined Effect Of Rheological Model And Equivalent Diameter Definitions On Pressure Losses/Equvalent Circulating Density Estimation.

ABSTRACT Without accurate estimation of annular pressure losses it is possible to face serious problems that would yield to interruption in drilling operation and sometimes lead to the abandonment of the well. Therefore, exact estimation of annular pressure losses is vital in drilling and well completion operations to control formation pressure and optimize drilling and completion fluids hydraulic program. Many investigators have proposed different equivalent diameter concept to provide...


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