ENVIRONMENTAL SCIENCE (LL) >CUSTOM<
16th Edition
ISBN: 9780357097113
Author: Miller
Publisher: CENGAGE C
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Question
Chapter 13, Problem 1CR
To determine
The process of removing tightly held oil and natural gas through horizontal drilling and hydraulic fracturing, or fracking. The role of these technologies in greatly increasing the production of oil and natural gas in the United States.
Expert Solution & Answer
Answer to Problem 1CR
The process of horizontal drilling involves drilling a vertical well deep into the earth, turning the flexible shaft of the drill, and then horizontal drilling. In the case of hydraulic fracturing, the shale rock is fractured by high-pressure pumps and a mixture of water, sand, and chemicals are pumped through holes in the underground well pipe. These technologies have reduced the cost of oil extraction in the United States and reduced its dependency on oil imports.
Explanation of Solution
The oil and gas producers combined two extraction technologies, horizontal drilling, and hydraulic fracturing or fracking, to reduce the cost of oil extraction.
The process of horizontal drilling involves:
(i). Drilling a vertical well deep into the earth.
(ii). Turning the flexible shaft of the drill.
(iii). Horizontal drilling to gain access to multiple oil and natural gas deposits.
The hydraulic fracturing or fracking is used to remove the oil and natural gas trapped in the shale rock. The shale rock is fractured by high-pressure pumps that force a mixture of water, sand, and chemicals through holes in the underground well pipe. A mixture of oil and natural gas and some amount of slurry flows out of the cracks when the pressure is released. The oil and gas with slurry are pumped to the surface through the well pipe. The returning slurry also contains some potentially harmful chemicals. The slurry is again injected under high pressure into deep underground wells and sent to sewage treatment plants.
These technologies are greatly increasing the production of oil and natural gas in the United States and also reducing the cost of oil extraction. The United States is utilizing these technologies to reduce its dependency on oil imports. The increased supply has reduced the price of natural gas. It has accelerated a shift from coal to natural gas for generating electricity in the United States.
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7. The streamlined, asymmetrical hills composed of till, labeled B, are what type of feature?
8. Examine the shape of the features labeled B on the map in Figure 9.10. How can these features be used to determine the direction of ice flow in a glaciated area?
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Chapter 13 Solutions
ENVIRONMENTAL SCIENCE (LL) >CUSTOM<
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