Formation Evaluation

Which method is used to measure spatial variations in the strength of the gravitational field of the Earth?

• Seismic

• Magnetic

• Density

• Electromagnetic

Which method is used to measure spatial variations in the strength of the geomagnetic field?

• Electromagnetic

• Magnetic

• Seismic

• Density

Which method is used to measure response to electric conductivity/resistivity and electromagnetic radiation?

• Seismic

• Magnetic

• Density

• Electromagnetic

Which method is used to measure travel times of reflected/refracted seismic waves?

• Seismic

• Density

• Magnetic

• Electromagnetic

Seismic methods are used to measure seismic velocity of rock layers in order to determine the lithology and geometry of the layers. Which type of wave is related to the density of the rock?

• P-waves

• S-waves

• Surface waves

• Love waves

Which type of seismic survey is the easiest and least expensive?

• 3-D seismic survey

• Surface seismic survey

• 2-D seismic survey

• 4-D seismic survey

What is the purpose of formation evaluation in petroleum exploration and development?

• To determine the ability of a borehole to produce petroleum

• To study the physical properties of rocks and fluids

• To evaluate hydrocarbon reservoirs and predict oil recovery

• To measure in situ formation fluid pressure

What is the advantage of wireline retrievable coring over conventional coring?

• Ability to retrieve core without pulling the entire drill string

• Economical

• Larger core size

• Time-saving

Which of the following logs is primarily used to define permeable beds when the SP log cannot be employed?

• Neutron Porosity Log

• Gamma Ray Log

• Acoustic Log

• Electrical logging

Which log provides information about the lithology and shale content of a formation?

• Gamma Ray Log

• Neutron Porosity Log

• Acoustic Log

• Electrical logging