Transcript Oil and Env Probs 2.PPT
Oil: Black Gold
Oil Formation
• Microscopic aquatic
protists
pressurized & heated • Many C-H chains die • Seeps through porous rock and trapped under non-porous
Crude Oil Recovery
•
Primary Oil
Recovery: Drill well, pump out oil •
Secondary Oil Recovery:
Injection of H2O into nearby well, force heavy oil into well
Off-shore Oil Platforms • •
Dangerous to work on Require constant maintenance
Santa
Barbara Oil Platforms
Crude Oil Refined?
Mix of diff. HC’s that are separated w/
distillation
: purifying a liquid by evaporation and condensation.
Crude oil delivered by oil tanker
Distilled at a Refinery (LBC, San Pedro)
NA Reserves
• • • Org. of Petroleum Exporting Countries 12 countries : Algeria, Angola, Ecuador, Iran, Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia, the United Arab Emirates, and Venezuela.
Determines best means for protecting their oil interests…price stabilizing
Case Study: OPEC Embargo • OPEC stops supplies of oil to US b/c we supplied Israel w/ weapons during Yom Kippur War.
• Odd-even rationing • Flag System • Ended in ’74 with Kissinger negotiations.
Pricing
1.
2.
How much oil is pumped?
How much oil is being refined?
3.
Operational costs of gas stations
**NOT FULL COST Pricing-
doesn’t include externalities
Shale Oil
• Fine-grained rock, has HCs called kerogen
kerogen
• Is crushed & heated, vaporizing condensed to shale oil
Tar Sands
• Mix of clay, sand, water and
bitumen
(a high sulfur oil) • Heat sand until bitumen softens, floats to surface Refined into crude oil
Canada #1!
Pros of Crude Oil: Easy to Transport
Pros of Crude Oil: Cheap!
Pros of Crude Oil: High Net Energy Yield
Pros of Crude Oil: Platforms make artificial reefs
Cons of Crude Oil
•
1) Air pollution (combustion)
–
increased CO 2 warming levels
global
–
acid deposition
Downside of All Fossil Fuels: Production of CO 2
Cons: MTBE
• Methyl tertiary butyl ether • C 5 H 12 O • Fuel additive in gas, enhances octane (helps burn gas completely emissions) from LUSTS carcinogen?
• Banned in 2004 reduces NOx and VOC • Groundwater pollutant
Con: Oil Spills
•
1989, Exxon Valdez spilled 10.9mill. barrels of crude oil into Prince William Sound, Alaska Exxon Valdez Prince William Sound
CLEAN UP!
•
Large booms contain oil
CLEAN UP!
•
Skimmer boats scrape off oil
CLEAN UP!
•
GE bacteria eats oil!
CLEAN UP!
CLEAN UP!
•
High pressure washing
Con: Wars!
•
Gulf War 1991: Iraq invaded Kuwait; US attacked to protect its oil supply
Peak Oil
• • M.K. Hubbert, 1956 • Theory: Crude oil reserve and production will peak in 1970’s and decline there after Show Hubbert Curve • US Oil Production peaked in 1971