EFFECTIVENESS OF MULTILATERAL WELLS IN

Topics: Oil well, Petroleum, Drilling fluid Pages: 86 (19562 words) Published: December 4, 2014
School of Computer, Science and Engineering
MSC PETROLEUM AND GAS ENGINEERING
A
Dissertation on
THE EFFECTIVENESS OF MULTILATERAL WELLS IN DEEP-WATER

Submitted by
TEMITAYO OLUWAKAYODE OKEGBEMIRO
@00347803
In partial fulfilment of the requirements for the M.Sc degree in Petroleum and Gas Engineering

MAY, 2014

1

DECLARATION/CERTIFICATION
I, Temitayo Oluwakayode OKEGBEMIRO declare that this dissertation is my own work. Any section, part or phrasing of more than 20 consecutive words that is copied from any other work or publication has been clearly referenced and also fully described in the reference section of this dissertation.

__________________________________
Temitayo Oluwakayode Okegbemiro
(Author)

I certify that I have read this dissertation and that in my opinion it is fully adequate, in scope and in quality, as a dissertation for the degree of Masters of Science.

__________________________________
Mr Alan Wells
(Supervisor)

________________________________________

Dr. Martin Burby

2

DEDICATION
This project is dedicated to Almighty God, the creator of Heaven and Earth for His shield, guidance and grace upon my life from my birth till date.

3

ACKNOWLEDGEMENTS
My greatest appreciation goes to Almighty God for helping me through my course. My special appreciation goes to my parents; Mr. and Mrs. Kunle Okegbemiro for their financial, moral, emotional and spiritual support. All members of my immediate family also have my heartfelt gratitude. My formal appreciation goes to my supervisor; Mr. Alan Wells for his supervisory role, mentoring and suggestions which contributed a lot to the success of this research work. I am also grateful to all the lecturers allotted to the programme by the school of Computing and Engineering – Prof. G.G. Nasr, Dr. L.T. Akanji, Mr. Ali Kadir, Dr. Martin Burby, Mr. Abass, Mr. Nourain and Mr. Mappin. Thanks for all the knowledge you passed on to me. I‘ll always remember you in appreciation.

TABLE OF CONTENTS
4

FRONT PAGE
DECLARATION/CERTIFICATION
DEDICATION
ACKNOWLEDGEMENTS
TABLE OF CONTENTS
LIST OF TABLES
LIST OF FIGURES
CHAPTER ONE
1.0
Introduction
1.2
Statement of Problems
1.3
Extended Reach Wells
1.3.1
Vertical Wells
1.3.2
Horizontal Wells
1.3.2.1
Undulating Wells
1.3.3
Multilateral Wells
1.3.3.1
Classification of Multilateral Wells
1.3.3.2
Drilling Multilateral Wells
1.4
Managed Pressure Drilling
1.4.1
Well Evaluation
1.4.2
Drill Cuttings and Core Samples
1.4.3
Well Logging
1.4.4
Completion
1.5
Extracting Oil and Natural Gas
1.5.1
Primary Recovery
1.5.2
Secondary Recovery
1.5.3
Enhanced Recovery
1.5.3.1
Thermal Recovery
1.5.3.2
Gas Injection
1.5.3.3
Chemical Flooding
1.6
Separating Oil, Natural Gas and Water
1.7
Waste Handling
1.7.1
Spill Prevention
1.7.2
Environmentally-Friendly and Cost-Effective Drilling Fluids
1.8
Advanced Casing and Cementing
1.8.1
Cement Technologies and Practices
1.8.2
Wellbore Integrity Tests
1.9
Drilling Cost Analysis
1.9.1
Drilling Cost Formula
1.9.2
Drilling Cost Predictions
1.10 Risks and Challenges in Multilateral Well Drillings
1.10.1
Process Risk
1.10.2
Production or Reservoir Risk
1.10.3
Financial Risk
1.10.4
Technology Risk
1.11 Justification for this Study
1.12 Aim and Objectives
5

1
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3
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15
19
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25
27
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29
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30
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33

CHAPTER TWO
2.1
Literature Review
CHAPTER THREE
3.1
Material and Methodology
3.1.1
Procedure for Analysis
3.1.2
Technical Analysis
3.1.2.1
Effectiveness of Vertical Well
3.1.3
Decline Curve Analysis
3.1.4
Economic Analysis
3.1.4.1
Discounted Cash Flow Analysis
3.1.4.2
Rate of Return
3.1.4.3
Income
3.1.4.4
Cost
3.1.5
Sensitivity Analysis
3.1.6
Mathematic Model
3.1.7
Multiple Legs Analysis
CHAPTER FOUR
4.1
Result and Discussion
4.2...
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