Oil & Gas - Wireline Logging Essential Training
Hello, I am Ricardo Calleja, and I want to welcome you to the course: Wireline Logging, Essential Training.
This course covers foundational aspects of wireline logging: the resources needed, factors affecting the quality of logs, standards, and general practices in the oil and gas industry. This initial training is divided in the following 7 chapters:
Chapter 1 - The Reservoir and the logging environment
Chapter 2 - Spontaneous Potential or SP
Chapter 3 - Resistivity tools
Chapter 4 - Gamma rays
Chapter 5 - Neutron Porosity
Chapter 6 - Density Porosity and finally.
Chapter 7 - Acoustic Porosity
Be aware that this course is not about the technology of a specific service company. Instead, we will review what the industry leaders have to offer, providing a comprehensive understanding of wireline logging practices. Lets begin!
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Chapter 1 - The Reservoir and the Logging Environment
In this chapter, you will learn to identify key formation properties and recognize different rock types. Next, we'll get into understanding the significance and types of porosity and permeability. Finally, we will assess fluid saturations and understand the effects of borehole conditions and filt...
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Chapter 1 - with script
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Chapter 2 - Spontaneous Potential
After completing this section you will understand the origin of spontaneous potentials, identify SP key applications, determine possible sources of error on SP readings and to describe the baseline responses in shale.
Finally, we will classify invasion profiles using SP logs, so let's begin! -
Chapter 2 - with script
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Chapter 3 - Resistivity Tools
In this chapter, you will learn what resistivity tools are really measuring. Also we will start by distinguishing between Induction Tools, Laterologs, and Micro Resistivity Tools. Additionally key concepts like depth of investigation and vertical resolution will be explained. Finally we will see ...
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Chapter 3 - with script
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Chapter 4 - Gamma Rays
Natural Gamma Ray Tools
Applications of Natural Gamma Ray Tools
Logging Conditions
Physics of the Measurement
Radioactive Decay Processes
Scintillation Detectors
Gamma Ray Units
Calibration Process
Factors Influencing Count Rates
Shop, Field, and Post Calibration -
Chapter 4 - with script
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Chapter 5 - Neutron Porosity Tools
Applications
Logging Conditions
Physics of the Measurement
Neutron Source
Energy levels
The Slowing of Neutrons
The Borehole Problem
Calibration -
Chapter 5 - with script
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Chapter 6 - Density Porosity
In this chapter, we will explore the density porosity tool's functionality, applications, logging conditions and the physics behind its measurements. We will understand what bulk density is and how it is related with porosity, finally we will also learn about the photoelectric factor (Pe) and its...
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Chapter 6 - with script
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Chapter 7 - Acoustic Porosity
The primary objective of logging an acoustic porosity tool is to determine formation porosity. Unlike porosity estimates from neutron and density tools, which reflect the total porosity, acoustic porosity tools indicate effective porosity. We will also cover anisotropy and the role of acoustic po...
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Chapter 7 - with script
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1.77 MBChapter 1 Manual
1.77 MB
Fundamental Formation Properties
Lithology
Porosity
Fluid Saturations
Permeability
The Borehole Influence
Filtrate Invasion
What Makes a Rock a Reservoir?
Controls on Porosity
Original Porosity
Early Diagenetic Changes
Burial Diagenetic Changes
Controls on Permeability
Rock Propertie... -
1.26 MBChapter 2 Manual
1.26 MB
Applications
Logging Conditions
Origin of Spontaneous Potentials
Electrochemical Processes
Membrane Potential
Liquid Junction Potential
Electrokinetic Processes
Physics of the Measurement
Baseline Responses in Shale
SP Response to Rmf/Rw Contrasts
Resistivity shale baseline method
Resi... -
3.93 MBChapter 3 Manual
3.93 MB
Applications
Logging Conditions
Physics of the Measurement
Mutual Signal
R-Signal
X-Signal
X-Signal in High Resistivity Formations
X-Signal in Low Resistivity Formations
Summary of the Receiver Signal
Resolution of the Measurement
Formation Water Resistivity
Porosity
Pore Tortuosity
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3.83 MBChapter 4 Manual
3.83 MB
Applications
Logging Conditions
Physics of the Measurement
Radioactive Decay
Potassium-40 Decay
Uranium-238 Decay
Thorium-232 Decay
Scintillation Detectors
Photo-Multiplier Tube (PMT)
Standardization of Units
Factors Influencing Count Rates
Calibration Standards
Shop, field and post Ca... -
5.47 MBChapter 5 Manual
5.47 MB
Applications
Logging Conditions
Physics of the Measurement
Neutron Source
The Slowing of Neutrons
The Capture of Thermal Neutrons
Thermal Neutron Detectors
Count Rate Dependencies
Slowing Down Cross Section of the Environment
Capture Cross Section of the Environment
The Borehole Problem... -
3.53 MBChapter 6 Manual
3.53 MB
Applications
Logging Conditions
Physics of the Measurement
Gamma Ray Source
Energy Loss in Gamma Rays
Compton Scattering
Photoelectric Absorption
Scintillation Detection
Bulk Density Computation
Density Correction for Stand-Off (CORP)
Density Correction for Mudcake Lithology -
9.86 MBChapter 7 Manual
9.86 MB
Applications
Logging Conditions
Physics of the Measurement
Generating and Recording Acoustic Energy
Detected Acoustic Waveforms
Acoustic Wave Types
Direct Waves
Tool Mode Waves
Mud Waves
Body Waves
Compressional Waves (P-waves)
Shear Waves (S-waves)
Shear Waves in Slow Formations
Sur...
