CPG Drilling Operations & Well Logging

Question 1

What is the primary purpose of drilling mud in well operations?

Accepted Answer

To lubricate the drill bit and maintain pressure

Answer

To increase the drilling cost.

Answer

To prevent the use of casing.

Answer

To dissolve the rock formation.

Question 2

What does the term 'kick' refer to in drilling?

Accepted Answer

An influx of formation fluids into the wellbore

Answer

A type of casing.

Answer

A failure in the drill string.

Answer

The start of a new well.

Question 3

What is the function of well logging?

Accepted Answer

To record geological data about the subsurface

Answer

To increase the well pressure.

Answer

To inject fluids into the formation.

Answer

To repair the drill string.

Question 4

Which tool is used to measure formation resistivity?

Accepted Answer

Resistivity log

Answer

Caliper log.

Answer

Gamma ray log.

Answer

Sonic log.

Question 5

Why is casing used in a well?

Accepted Answer

To prevent formation collapse and fluid migration

Answer

To drill faster.

Answer

To inject cement.

Answer

To remove drill cuttings.

Question 6

What does a gamma ray log detect?

Accepted Answer

Radioactivity to identify rock types

Answer

Water saturation.

Answer

Formation pressure.

Answer

Casing strength.

Question 7

Which log measures the acoustic properties of the formation?

Accepted Answer

Sonic log

Answer

Gamma ray log.

Answer

Neutron log.

Answer

Caliper log.

Question 8

What is the purpose of cementing in drilling operations?

Accepted Answer

To bond casing to the borehole and isolate zones

Answer

To drill through hard formations.

Answer

To lubricate the drill bit.

Answer

To clean the borehole.

Question 9

Which well log helps determine the porosity of formations?

Accepted Answer

Porosity log

Answer

Gamma ray log.

Answer

Caliper log.

Answer

Cement bond log.