ABSTRACT
Qualitative Petrophysical Analysis of Wabi 10 well, located in the Wabi Oil Field in the Niger Delta was carried out. The wire-line log comprising of gamma rays, resistivity and neutron – density logs provided by Total Exploration and Production Nigeria Limited (TEPNL) was used. The properties considered include Lithofacies, the Permeable and Impermeable beds with their boundaries, the Fluids bearing zones and the Nature of the fluids. Four (4) reservoirs were inferred from this study viz A, B, C, D at depth intervals of 3515 – 3532 ft, 3560 – 3587 ft, 3723 - 3740 ft and 3835 - 3868 ft with the top and bases of the depth from 1983 – 4505 ft. The analyses indicate that Gas – Oil Contact (GOC) been observed at depth intervals of 3560 ft, 3730 ft and 3867 ft. The Oil – Water Contact (OWC) were inferred at depth intervals of 3567 ft, 3740 ft and 3873 ft. There were three (3) massive permeable zones (sandstones) with few intercalations of sandstone and shale at depth intervals of 2000 – 2120 ft, 2820 – 3320 ft, 4030 – 4505 ft and three (3) massive impermeable zones (shale) with few intercalations of sandstones and shale at depth intervals of 2120 – 2820 ft, 3320 – 3807 ft, and 3807 – 4030 ft were inferred. These results suggest good enough hydrocarbon potential and a reservoir system whose performance is considered satisfactory for hydrocarbon production.
TABLE OF CONTENTS
TITLE PAGES
Dedication i
Certification ii
Dedication iii
Acknowledgement iv
Abstract v
Table of Contents vi
CHAPTER ONE
INTRODUCTION
1.1. Aim and Objectives 2
1.1.1 Aims 2
1.1.2 Objectives 2
1.2. Location and Extent of Study Area 2
1.3. Relief and Drainage 3
1.3.1. Relief 3
1.3.2. Drainage 3
1.4. Climate and Vegetation 4
1.4.1. Climate 3
1.4.2. Vegetation 4
1.5. Land Use 4
1.6. Geology of the study area 5
CHAPTER TWO
LITERATURE REVIEW
2.1. Regional Petroleum Geology of Niger Delta Basin 7
2.1.1. Geology Province 8
2.1.2. Stratigraphy of the Niger Delta 9
2.1.3. Benin Formation 9
2.1.4. Agbada Formation 10
2.1.5. Akata Formation 10
2.1.6. Depobelts 11
2.1.7. Structural Geology of the Niger Delta 13
2.2. Petrophysics 14
2.3. Petrophysical Analysis 14
2.3.1. Resistivity Log 15
2.3.2. Gamma Ray Log 15
2.3.3. Density and Neutron Log 16
CHAPTER THREE
MATERIALS AND METHOD
3.1. Materials 17
3.2. Methods 17
3.2.1. Identification of Lithofacies Procedure 17
3.2.2. Identification of Fluid Bearing Zones and Nature of Fluid Present Procedures 18
3.2.3. Permeable and Impermeable Zones Procedures 18
CHAPTER FOUR
RESULTS AND DISCUSSION
4.1. Results 18
4.2. Lithologies 18
4.3. Permeable and Impermeable beds 22
4.4. Fluid Bearing Zones and Nature of Fluid Present 24
CHAPTER FIVE
CONCLUSION AND RECOMMENDATION
5.1. Conclusion 27
5.2. Recommendation 28
REFERENCES 29
