ABSTRACT
Porosity is known as the fraction of the volume of space between the solid particles of a
rock to the overall rock volume. All pores, cracks, vugs, inter-crystalline and intra-crystalline
spaces are included in this space. At ambient conditions, a helium porosimeter is used to evaluate
the porosity of core samples retrieved from a petroleum reservoir. The use of helium gas to
determine "true porosity" is based on the idea that helium, being the tiniest atom, should be able
to penetrate the smallest of pores, but other fluids may not. This experiment is done to evaluate
the techniques to obtain core sample bulk volume, grain volume, pore-volume, and effective
porosity by using the gas and liquid saturation method.
In this experiment, the volume of a matrix will be determined with the core samples and
without the core samples. This experiment will be using 4 core samples - A, B, C, and D. A
porosimeter with a constant helium supply of 145 psig will then be experimented together with
the core samples. After that, the same step will be repeated but without the core samples. The
data of the volume matrix, for both ‘with the core samples’ -V2 and ‘without the core samples’
-V1 will be tabulated and the results vary. Eventually, porosity of core samples can finally be
determined by calculation based on data collected during the experiment by following lab
procedures. The effective porosity of four core samples of different diameter was found 0.87,
0.62, 0.35, 0.03 respectively. Sample A has highest porosity at 0.87 indicates that sample A has a
larger pore space compared to others. The porosity of geological formations may be assessed at
great depths using well-logged data. Deeper and innovative extraction technologies must be used
to get fuel as the need for energy grows. The ability to extract unconventional fuel will be
determined by the physical qualities of the rock. From this experiment we can conclude that the
Berea core sample is a sedimentary rock that has a great amount of porosity for reservoir rocks
and the objective is achieved.
1
, TABLE OF CONTENTS
NO. CONTENTS PAGE
1. INTRODUCTION 3-7
● EXPERIMENT BACKGROUND
● OBJECTIVE
● SCOPE OF EXPERIMENT
● THEORY/LITERATURE REVIEW
2. METHODOLOGY 7-9
● MATERIAL AND APPARATUS
● EXPERIMENT PROCEDURE
3. RESULT AND DISCUSSION 9-12
● EXPERIMENT DATA
● DATA ANALYSIS AND DISCUSSION
4. CONCLUSION AND RECOMMENDATION 13
5. REFERENCES 14-15
6. APPENDICES 15
2
Porosity is known as the fraction of the volume of space between the solid particles of a
rock to the overall rock volume. All pores, cracks, vugs, inter-crystalline and intra-crystalline
spaces are included in this space. At ambient conditions, a helium porosimeter is used to evaluate
the porosity of core samples retrieved from a petroleum reservoir. The use of helium gas to
determine "true porosity" is based on the idea that helium, being the tiniest atom, should be able
to penetrate the smallest of pores, but other fluids may not. This experiment is done to evaluate
the techniques to obtain core sample bulk volume, grain volume, pore-volume, and effective
porosity by using the gas and liquid saturation method.
In this experiment, the volume of a matrix will be determined with the core samples and
without the core samples. This experiment will be using 4 core samples - A, B, C, and D. A
porosimeter with a constant helium supply of 145 psig will then be experimented together with
the core samples. After that, the same step will be repeated but without the core samples. The
data of the volume matrix, for both ‘with the core samples’ -V2 and ‘without the core samples’
-V1 will be tabulated and the results vary. Eventually, porosity of core samples can finally be
determined by calculation based on data collected during the experiment by following lab
procedures. The effective porosity of four core samples of different diameter was found 0.87,
0.62, 0.35, 0.03 respectively. Sample A has highest porosity at 0.87 indicates that sample A has a
larger pore space compared to others. The porosity of geological formations may be assessed at
great depths using well-logged data. Deeper and innovative extraction technologies must be used
to get fuel as the need for energy grows. The ability to extract unconventional fuel will be
determined by the physical qualities of the rock. From this experiment we can conclude that the
Berea core sample is a sedimentary rock that has a great amount of porosity for reservoir rocks
and the objective is achieved.
1
, TABLE OF CONTENTS
NO. CONTENTS PAGE
1. INTRODUCTION 3-7
● EXPERIMENT BACKGROUND
● OBJECTIVE
● SCOPE OF EXPERIMENT
● THEORY/LITERATURE REVIEW
2. METHODOLOGY 7-9
● MATERIAL AND APPARATUS
● EXPERIMENT PROCEDURE
3. RESULT AND DISCUSSION 9-12
● EXPERIMENT DATA
● DATA ANALYSIS AND DISCUSSION
4. CONCLUSION AND RECOMMENDATION 13
5. REFERENCES 14-15
6. APPENDICES 15
2
