Title: Quiz 3 Part 1
Course: Open PRO250 Oil & Gas Production I > Section: Week10: Maintenance and Workovers

Q: Two brothers revolutionized the oil industry in 1972 when they logged a well.  Which company still bears the name of the brothers?
- Cal-frac
- Schlumberger
- Emperica
- PML
A: Schlumberger

Q: According to Steve Sanve of WPX, operators try to get back as much frac fluid possible that was pumped in.    Frac fluid retrieval rate is:
- 15-50%
- 10-20%
- 80-90%
- 20-80%
A: 15-50%

Q: An electric current can be produced when 2 different rock formations are connected with water. This is known as:
- Difference of potential
- Electro motive force
- Spontaneous potential
- None of the Above
A: Spontaneous potential

Q: When interpreting a Cement Bond Log (CBL), what do the “railroad tracks” across the log indicate?
- Ratty cement is present
- Cement is bonded to the formation but not the casing
- Good cement bond
- No cement is present
A: No cement is present

Q: We learned that EnCana is not using sand in their frac jobs.  Why does this go against all conventional hydraulic fracturing theory?
- Sand helps increase the downhole pressure
- Sand is required to prop open the fractures
- Sand helps fracture the formation
- Sand increases the energy in the hydraulics
A: Sand is required to prop open the fractures

Q: In the formation, the natural drive mechanisms include?
- drilling, producing, selling
- water, chemical, and gas injection
- depleting, refilling, replace lost pressure
- dissolved gas, gas cap expansion, water drive
A: dissolved gas, gas cap expansion, water drive

Q: The overburden pressure of the formation is known as the
- Density of the Reservoir
- Top pressure
- Fracture gradient
- Reservoir geometry
A: Fracture gradient

Q: Part of the pumpers job is to...?
- Replace all worn parts on the drilling rig
- Keep all surface equipment and compressor/ dehy plant running smoothly
- Analyze well performance and determine perforation intervals
- All of the Above
A: Keep all surface equipment and compressor/ dehy plant running smoothly

Q: What does sour gas contain that sweet gas does not?
- water
- oil
- H2S
- CO2
A: H2S

Q: A gun barrel is a popular form of a FWKO also known as ____
- Free Water Oil Knap
- Free Water Knock Out
- Shotguns
- Oil vessel
A: Free Water Knock Out

Q: Measurements collected during wireline log or E-log testing may show the presence of hydrocarbons as compared to freshwater or saltwater measurements. How does this work?
- Rock conducts gamma rays
- Salts dissociate in water, creating saltwater
- Hydrocarbons have a high resistance to the flow of electricity
- None of the Above
A: Hydrocarbons have a high resistance to the flow of electricity

Q: Three phase separators separate:
- Gas, oil water
- Contaminants from oil and water
- Vapor from liquid
- CH4, CO2 and H2S
A: Gas, oil water

Q: What is a gamma ray log used for?
- To indicate the amount of shale in a sand bed
- To record the natural radioactivity of shales
- To correlate data to other logs and determine the location of the target reservoir
- All of the Above
A: All of the Above

Q: What type of log is used  for the presence of hydrocarbons when non-water based media is used in drilling mud?
- saturation log
- wire log
- induction log
- All of hte Above
A: induction log

Q: This frac fluid additive dissolves mineral cement in rocks and initiates cracks:
- Biocide
- Surfactant
- Crosslinker
- Acid
A: Acid

Q: The Niobrara wells in the Piceance Basin have produced what type of gas so far?
- Dry gas
- Wet gas
- Saturated gas
- B and C
A: Dry gas

Q: During advanced recovery efforts, what is water alternated with gas?
- CH4 and CO2 diffused in water
- Produced gas and water
- H2O and CH4
- Injected CO2 alternated with H2O
A: Injected CO2 alternated with H2O

Q: The most common inert gas for pipeline specifications is:
- True
- False
A: True