10 Questions
What is the primary component of a gamma ray tool?
A scintillation counter
What is the depth of investigation for a gamma ray tool in average drilling mud and formation density conditions?
30 cm
Which of the following is a qualitative use of the gamma ray log?
Identifying mineral presence
What happens to the gamma ray signal if the formation density increases?
The depth of investigation decreases
What can be inferred from an increase in gamma ray values at a certain depth?
The zone below is shalier
What is the primary purpose of the Gamma Ray Tool Measurement in sedimentary formations?
To reflect the shale content of the formations
Which of the following formations would not have low levels of radioactivity according to the Gamma Ray Log?
Shale
How is the API unit empirically defined?
By calibration to a reference well at the University of Houston
What is the significance of the API scale ranging from 0-150 API, 0-100 API or 0-200 API?
It reflects the maximum radioactivity in a given well
Which of the following statements best describes the primary source of gamma ray radiation in the earth?
The decay of radioactive isotopes of potassium, uranium, and thorium
Learn about the gamma ray log, also known as the 'shale log', used in geology to measure gamma rays emitted during natural radioactive decay of rocks. Explore how gamma ray radiation from potassium, uranium, and thorium isotopes helps identify shale content in sedimentary formations.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
