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Formation Evaluation and Well Logging Density

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Formation Evaluation and Well Logging Density

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Questions and Answers

What does the formation density log measure?

The permeability of the formation

The porosity of the formation

The resistivity of the formation

The bulk density of the formation (correct)

What are the operational principles of formation density tools?

They emit sound waves and measure the echo from the formation

They use magnetic resonance to analyze the composition of the formation

They bombard the formation with radiation and measure how much radiation returns to a sensor (correct)

They measure the temperature of the formation to determine density

What type of tools are formation density tools?

Acoustic measurement tools

Magnetic resonance imaging tools

Induced radiation tools (correct)

Temperature sensing tools

What do gamma rays do when they enter the formation?

Undergo Compton scattering by interaction with the electrons in the atoms composing the formation Signup and view all the answers

What is one of the learning outcomes related to density tools?

$LO1$: Understand the physical principles behind the operation of density tools. Signup and view all the answers

What is the main use of Neutron Log in formation evaluation?

Determining the porosity of a formation Signup and view all the answers

What happens to the emitted neutrons in Neutron Log when they hit the formation?

They undergo scattering, producing high energy gamma rays Signup and view all the answers

What parameter does the neutron log sensor have high sensitivity to?

Hydrogen atoms Signup and view all the answers

In neutron logging, what makes scattering more efficient when neutrons hit the formation?

Presence of hydrogen atoms Signup and view all the answers

What are the three processes of interest in neutron logging?

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