What is the primary purpose of drilling mud in well operations?
Drilling mud is used to lubricate the drill bit, carry cuttings to the surface, and maintain wellbore pressure.
What does the term 'kick' refer to in drilling?
A 'kick' refers to an influx of formation fluids into the wellbore that could lead to a blowout if not controlled.
What is the function of well logging?
Well logging provides detailed records of the geological formations penetrated by a borehole.
Which tool is used to measure formation resistivity?
Resistivity logging tools measure the resistance of formation to the flow of electric current, indicating fluid types.
Why is casing used in a well?
Casing stabilizes the wellbore, prevents contamination of water zones, and isolates high-pressure zones.
What does a gamma ray log detect?
A gamma ray log measures natural radioactivity in formations to distinguish between shale and sandstone.
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Which log measures the acoustic properties of the formation?
The sonic log evaluates porosity and lithology by measuring the travel time of acoustic waves through formations.
What is the purpose of cementing in drilling operations?
Cementing secures the casing, isolates zones, and prevents fluid migration between formations.
Which well log helps determine the porosity of formations?
Porosity logs, such as neutron and density logs, help identify the storage capacity of formations.