19 Questions
Which method is NOT used in the predrilling phase of petroleum exploration?
Electromagnetic
Which geophysical method measures the spatial variations in the strength of the gravitational field of the Earth?
Gravity
Which geophysical method involves taking measurements at or near the Earth's surface that are influenced by the internal distribution of physical properties?
Seismic
Which logging method is used to define permeable beds when the SP log cannot be employed?
Gamma Ray Log
Which element is largely concentrated in association with clay minerals and is used to define shale beds in the Gamma Ray Log?
Potassium
What is the primary component of water and hydrocarbon that affects the response of the neutron log?
Hydrogen
Which flow regime is characterized by pressure remaining constant with time in the reservoir?
Steady state flow
Which type of well testing involves measuring the pressure at the bottom of the well while the well is shut-in for a period of time?
Buildup test
What properties can be determined from pressure curve analysis during well testing?
Permeability and reservoir heterogeneities
What is the purpose of a drill stem test (DST)?
To assess the production potential of the well
What is the main challenge in maintaining a constant flow rate during a drawdown test?
Maintaining a constant wellbore pressure
Which of the following properties are determined in routine core analysis?
Porosity, Permeability, Saturation
Which type of logging records a direct current voltage that develops naturally between a movable electrode in the wellbore and a fixed electrode at the surface?
Spontaneous Potential (SP) Log
What is the purpose of well logging?
To collect data about wellbores and subsurface formations
What does the hydrostatic pressure of the mud column during drilling force into the permeable formations?
Mud filtrate
Seismic methods measure seismic velocity of rock layers to detect both lateral and depth variations and the objective is to determine the lithology and geometry of the layers.
b) Lithology and geometry
What factor is the velocity of a seismic wave related to?
a) Density
What are the two types of elastic waves produced in seismic methods?
a) P-waves and S-waves
What is the purpose of Formation Evaluation (FE)?
c) Oil and gas
Test your knowledge of core handling and preservation with this quiz. Learn the steps involved in properly marking, wrapping, and transporting core samples for laboratory analysis. Improve your understanding of this important process in the field of geology.
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