4692929525 ca094db412 m What environmental problems are associated with petroleum drilling and refining?
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Issue by nayn: What environmental issues are linked with petroleum drilling and refining?
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Reply by carbonates
There has recently been a lot of controversy over this matter, particularly in the Eastern US and in parts of the West in which suburban relocation has brought men and women who are not accustomed to oil and fuel drilling into locations where oil and fuel drilling is a extended-standing activity.

The main products of controversy include hydraulic fracturing, typically carried out in gas shale wells, but usually completed in oil and standard fuel wells. Hydraulic fracturing is a method in which h2o and sand are pumped down into a properly after it has been drilled in buy to fracture the rock. Most of this sort of operate is done in wells about a mile under the surface so it has small if any opportunity of impacting the surface area (given that hundreds of thousands of tons of rock lie more than the fracture region) and little opportunity of affecting shallow clean h2o aquifers. Most fresh drinking water aquifers (known as groundwater) are much less than one thousand ft deep. Since the wells are lined with thick steel pipe down to the level of the fracturing, these fracture fluids do not arrive into speak to with groundwater. There is substantial controversy about the additives utilised in these fracture fluids and because they are typically held confidential (in Colorado and some states they ought to be disclosed) some folks are involved. Most of the chemical compounds utilized are items that can be found in the regular household, these kinds of as boric acid (utilized as natural insect repellent) detergent, shampoo, anti-freeze (used in car radiators), and alcohol.

Yet another issue is the sum of water utilized for these fracturing operations. It is often about 1 million gallons of refreshing h2o. Occasionally oil firms will truly drill a drinking water well in purchase to acquire this water, other times they will use surface area h2o from a lake or river. The drinking water is retrieved inside of about the first month following it is pumped into the properly, but will include salt (from the rock) and other contaminants (from the frac fluids) when it comes back up. It has to be disposed of by injecting it into a deep (over 1 mile) well or is usually treated by municipal sewage remedy plants to comply with the Clean H2o Act. Some businesses have developed techniques to process the water on their own so that it can be recycled and employed in other wells.

As this hydraulic fracturing technology and horizontal drilliing technology has sophisticated, it has diminished the “footprint” of a typical drilling plan. Often at least an acre of land must be cleared temporarily in buy to drill a well. At times these pads are as huge as 5 acres. As organizations have experimented with to lessen this footprint, they have created approaches to drill numerous wells from 1 pad, reducing the temporary surface area influence on the land. Right after the properly is drilled, all that remains is a small wellhead (about the dimension of a mailbox) or in the situation of an oil effectively, there is often a pump jack installed, particularly as the nicely gets older and needs to be pumped in buy to raise the oil out. That facility can occupy a number of hundred square feet. The unique nicely pad place is most often restored to grassland. In urban regions like Los Angeles, numerous effectively facilites are now set beneath the ground (and also in some Wyoming gas fields) in buy to minimize visual affect of the manufacturing equipment. Entire oil drilling rigs in Los Angeles and Prolonged Seashore, California are set up behind structures that disguise them as condominiums. See these illustrations:

http://www.flickr.com/images/joits/3226437888/

and

http://www.consrv.ca.gov/canine/photo_gallery/drilling_rigs/Pages/picture_02.aspx

In Wyoming and other elements of the west there has been problem about the impact of surface area activity on wildlife migration. This has been controversial, but analysis reports, and cautious mitigation by some of the oil businesses involved have normally prevented this from becoming a difficulty. In several places of the western US there are rigid rules that stop drilling in the course of breeding season for many birds and animals, and avert drilling close by breeding areas in which youthful birds or other animals may possibly be nesting. These rules are enforced by several Federal and State businesses.

http://sustainabilityreport.shell.com/2006/responsibleenergy/ourneighbours/pinedaleusa.html

Offshore drilling has one more set of issues. There have been many significant oil spills relevant to offshore drilling and the 1969 Santa Barbara oil spill is 1 of those that almost certainly aided create the modern environmental movement. In the early 1990′s main oil businesses came together to fund significant oil spill response operations that can reply with gear and manpower worldwide in the function of an ocean oil spill. 1 of these organizations that was shaped in 1970 and even now operates is Clean Seas:

http://www.cleanseas.com/

Oil refining is most likely a greater environmental issue that oil drilling, because refineries are 1 of the biggest resources of air pollution behind motor vehicles and power plants. Estimates for the Los Angeles, California refineries are that they emit about 3,245 ton

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