Environmental Geology Exam 3 Section 3 Questions and Answers
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Course
PG - Professional Geologist
Institution
PG - Professional Geologist
Draw a Fault Trap. Discuss how it works. - Answer-Oil or gas in a porous layer of rock sealed off by a non porous layer
Draw a Stratigraphic trap. Discuss how it works. - Answer-When the reservoir rock containing the oil traps it changes to less permeable
Show Multilateral drilling from an of...
Environmental Geology Exam 3 Section
3 Questions and Answers
Draw a Fault Trap. Discuss how it works. - Answer-Oil or gas in a porous layer of rock
sealed off by a non porous layer
Draw a Stratigraphic trap. Discuss how it works. - Answer-When the reservoir rock
containing the oil traps it changes to less permeable
Show Multilateral drilling from an offshore platform. Is this a consideration in Santa
Barbara? - Answer-Well goes down extends out like tree branches to collect from
various spots at once, now picture this off a deck like shell beach
How does steam injection work as a secondary oil recovery method? - Answer-High
pressure steam injected into resovoir through wells,
transfers heat to surrounding rock/oil
temp increases, oil less viscous flows better towards wells, steam chamber forms
around well overtime continuing to push oils towards wells.
In fracking, what is injected into the well? What comes out? What are risks? - Answer-
water, sand and chemicals.
Natural gas and Oil comes out.
Risks are groundwater contamination, air pollution, depletes water supplies, explosions
What is "natural gas"? What are pros and cons? - Answer-Primarily methane from liquid
petroleum and coal beds
Pro- May allow switch from oil
Con- Coal bed methane extraction has environmental and health costs
How is coal formed? - Answer-Buried plant matter altered by heat and pressure
What are pros and cons of consuming coal? - Answer-Pros- Extremely abundant, lower
energy cost then other fuels
Cons-Produces pollutants and Co2
*Interest Name two unconventional fossil fuels
*Hydrocarbons - Answer-Tar Sands
Oil Shale(Sedimentary rock that releases oil when heated)
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