VEDA2025_Technical Quiz_Petroleum Technology

The primary function of drilling mud is:

• Cooling the drill bit

• Removing cuttings from the well

• Controlling formation pressure

• All of the above

A blowout preventer (BOP) is used to:

• Increase drilling speed

• Prevent uncontrolled well flow

• Increase mud density

• Reduce casing collapse

Which type of drilling method is commonly used in petroleum industry?

• Percussion drilling

• Auger drilling

• Cable tool drilling

• Rotary drilling

The drilling string includes:

• Kelly

• Drill pipe

• Drill collars

• All of the above

Kick tolerance in drilling refers to:

• Pressure limit before casing failure

• Ability to handle influx safely

• Mud weight adjustment limit

• Drilling bit penetration rate

Resistivity logs are mainly used to determine:

• Porosity

• Permeability

• Hydrocarbon saturation

• Lithology

SP log response is mainly influenced by:

• Salinity contrast

• Formation pressure

• Temperature gradient

• Porosity

Neutron logs are sensitive to:

• Clay content

• Hydrogen index (porosity)

• Resistivity

• Sonic velocity

The caliper log is used to measure:

• Borehole diameter

• Formation resistivity

• Acoustic velocity

• Permeability

Gamma-ray logs are used primarily to identify:

• Sand-shale differentiation

• Fluid type

• Formation pressure

• Casing thickness