5 Questions
What is the primary source of gamma radiation in formation measured by gamma ray logging?
Potassium-40 and isotopes of the Uranium-Radium and Thorium series
What is the commonly used symbol for Gamma Ray log?
GR
What happens to the energy of gamma rays as they travel through the formation?
They progressively reduce in energy due to collisions with other atoms in the rock (Compton scattering)
What is the main purpose of lithology log tools?
To understand the physical principles behind lithology log operations
What are some of the isotopes contributing to gamma radiation in formations?
$^{40}K$, Uranium-Radium, Thorium series
Study Notes
Gamma Ray Logging
- Primary source of gamma radiation in formation measured by gamma ray logging: Potassium-40 (40K), Uranium-238 (238U), and Thorium-232 (232Th) isotopes
Gamma Ray Log Symbol
- Symbol commonly used for Gamma Ray log: GR
Energy of Gamma Rays
- Energy of gamma rays decreases as they travel through the formation due to absorption and scattering by the surrounding rock
Lithology Log Tools
- Main purpose of lithology log tools: to identify and characterize rock types and their properties
Isotopes Contributing to Gamma Radiation
- Isotopes contributing to gamma radiation in formations: 40K, 238U, and 232Th
Test your knowledge of lithology log tools, environmental corrections, and interpretation of Gamma Ray Logs in petroleum geology. Learn about the physical principles behind the operation of lithology log tools and the environmental corrections needed to be applied to lithology logs.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
