PETE 321 final spring 2023 density logs

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School

Texas Tech University *

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Course

321

Subject

Geography

Date

Dec 6, 2023

Type

docx

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Uploaded by DoctorBookCamel16

Question 1: What is the primary purpose of porosity and density logs in the field of well logging? A) To measure well azimuth B) To optimize drilling rig operations C) To assess geological formations D) To evaluate subsurface rock properties Question 2: What does "porosity" refer to in well logging? A) The measurement of electrical resistivity B) The void space within a rock, which can contain fluids C) The ability of a rock to transmit fluids D) The depth of the wellbore Question 3: In well logging, what is the term for the method that estimates porosity based on the neutron and density measurements? A) Gamma ray logging B) Resistivity logging C) Sonic logging D) Neutron porosity logging Question 4: What is the primary function of a "density log" in well logging? A) To calculate well depth B) To assess geological formations C) To measure the natural radioactivity of the formation D) To determine the bulk density of the formation and estimate porosity Question 5: What is the primary purpose of "neutron porosity logs" in well logging? A) To calculate well azimuth B) To optimize drilling rig operations C) To assess geological formations D) To estimate porosity by measuring the response of neutrons to the formation's hydrogen content Question 6: In well logging, what is the term for the ratio of the volume of void space within a rock to the total volume of the rock? A) Permeability B) Saturation C) Porosity D) Formation pressure Question 7: What is the role of a "caliper log" in well logging? A) To optimize drilling rig operations B) To measure well azimuth C) To assess geological formations D) To provide information on the size and shape of the wellbore Question 8: In porosity and density logs, what is "bulk density" referring to? A) The depth of the wellbore B) The measurement of electrical resistivity C) The total density of the formation, including both the matrix and fluids D) The ability of a rock to transmit fluids Question 9: What is the primary objective of "sonic logs" in well logging? A) To assess geological formations B) To calculate well depth C) To optimize drilling rig operations D) To measure the travel time of sound waves in the rock and determine rock properties Question 10: What is "lithology" in the context of porosity and density logs? A) The measurement of electrical resistivity B) The ability of a rock to transmit fluids C) The determination of the rock type or composition based on well log responses D) The depth of the wellbore Question 11: What is "matrix density" in porosity and density logs? A) The total density of the formation, including fluids B) The measurement of electrical resistivity C) The density of the rock matrix, excluding fluids D) The ability of a rock to transmit fluids

Question 12: What type of data is commonly collected and analyzed using porosity and density logs to evaluate subsurface formations? A) Geological age of the formation B) Wellhead design specifications C) Formation temperature D) Density, porosity, and lithology information Question 13: In porosity and density logs, what is "apparent porosity"? A) The depth of the wellbore B) The measurement of electrical resistivity C) The actual porosity of the formation D) The calculated porosity based on well log measurements Question 14: What is "hydrocarbon saturation" in well logging? A) The measurement of electrical resistivity B) The void space within a rock, which can contain fluids C) The ratio of the volume of void space filled with hydrocarbons to the total void space D) The ability of a rock to transmit fluids Question 15: What is the primary application of "density-porosity crossplots" in well logging? A) To calculate well depth B) To assess geological formations C) To optimize drilling rig operations D) To determine the porosity of subsurface rocks based on density and neutron measurements

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