GEOLOGICAL WIRELINE LOGS AND THEIR APPLICATION

ABSTRACT

Wireline logging is a veritable tool for the determination of hydrocarbon beneath the subsurface, it is applied by prospecting companies hence, this work studies geological wireline logging and their application in oil and gas reservoir beneath the earth’s surface. Wireline logging is performed by lowering a logging tool of one or more instruments on the end of a wireline into an oil well and recording petro physical properties using a variety of sensors. This logging process is aided by various logging tools, depending on the method being used. Geologists and Engineers use wireline logging to examine the rock formations, their geometries and complexion. By this, reliable information is acquired through the analysis of geophysical data in a well. The first wireline logging process was carried out by two brothers Conrad and Schlumberger on the 5th of September 1927.

From the study, the utility and applications of wireline logging are based on the empirical theories developed by Conrad and Schlumberger.

TABLE OF CONTENT

•CHAPTER 1:

1.1.Introduction

1.2.Meaning of wireline logging

1.3.Historical background of wireline logging

1.4.Working principle of wireline logging

1.5.Purpose of the study

•CHAPTER 2:

2.0. Review of relevant literature

2.1. Types of wireline logging

2.1.1. Open hole logging

2.1.2. Cased hole logging

2.2. Methods of logging

2.2.1. Borehole imaging logs

2.2.2. Porosity logs

2.2.3. Self/spontaneous potential

2.2.4. Gamma ray logs

2.2.5. Sonic log

2.2.6. Resistivity log

2.2.7. Neutron porosity

•CHAPTER 3:

3.1. Wireline logging tools

3.1.1. Natural gamma ray tools 

3.1.2. Nuclear tool

3.1.3. Resistivity tool

3.1.4. Advantages of wireline log

3.2. Applications of wireline logging

3.2.1. Application of wireline log in sedimentology and stratigraphic correlation

3.2.2. Application of wireline log to coal mining evaluation

3.2.3. Application of wireline log to estimate source rock maturity

CHAPTER 4:

4.0. Conclusion and summary

Reference: