For instance, a major decline in global economic growth will lower crude oil prices which will impact investments in exploration and extraction of oil.
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The extraction of oil and gas is a highly regulated activity.
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Fracking, or hydraulic fracturing, has unleashed a boom in energy production in the United States by allowing the extraction of oil and gas from shale rock.
Another restraint on producing large quantities of algae is that its cell walls are difficult to break, making extraction of the oil inside an energy intensive process.
The test of Mr Mesa's relationship with Congress will be the energy law, which will set new conditions for private firms in the extraction and sale of oil and gas.
It was seen as a spectacular Italian coup when Eni became operational leader, but the thanks to a poor infrastructure for exploration in the northern Caspian sea, costly regulations about the burning off of gas at oil wells, and the rising costs of oil extraction, production was slowed and costs overrun.
The oil and gas law, West said, is intended to ensure extraction of the maximum amount of oil and gas from a large area, protect the mineral rights of multiple landowners, and prevent waste of the resource.
It could be a region where there was heavy extraction of resources, particularly oil, or ferrous metals as in the case of Chukotka.
The reinvestment of revenues from oil and gas extraction into the permanent protection of parks, open spaces, wildlife habitat, and access for recreational activities.
After his election in 1992, Mr Lissouba broke the oil-extraction monopoly of the French company, Elf, bringing in other companies.
Goodyear has plenty of experience with the economics of oil and gas extraction.
In April 2012, a study by scientists at the US Geological Survey of the interior of the US found that events of magnitude 3 or greater had "abruptly increased in 2009" from 1.2 per year in the previous 50 years to more than 25 per year - although a number of gas and oil extraction methods may be implicated in the rise.
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Opponents of the expansion are pointing to the spill as timely evidence of safety concerns over offshore oil extraction.
It assumes the top end of projections for oil still available for extraction.
Alberta, Canada is site of the world's largest extraction operations from oil sands, heavy earth laden with bitumen, a hydrocarbon-rich mineral.
Congress included a few favored ones you might not think of as manufacturing--mining, oil extraction and engineering.
He has batted away all criticisms of the Albertan tar sands, where oil extraction is an especially dirty business, and placed his faith in carbon capture and storage, an unproven and expensive technology.
In my opinion, they want Mes Aynak to set a precedent -- to be a model for resource extraction of the one trillion dollars plus of valuable minerals like oil, copper, lithium and iron buried underneath Afghanistan.
Net oil exporters, like Iran, will meanwhile have much bigger populations consuming energy resources, which could lead to an energy famine for net oil importers like the U.K. "There just aren't enough big projects in the pipeline to keep up with demand, " said John Miles, chairman of Arup, who coordinated research into oil-extraction projects currently under way.
Infrastructural works such as the construction of ports, dredging, pipelines and oil or mineral extraction may also damage sites.
But oil and gas is a huge chunk of the extraction business, and the percentage depletion rules are more favorable for fossil fuels than for other things you might extract.
We push oil companies to explore more challenging and dangerous means of extraction (the easy hydrocarbons are gone) because we consider driving a fundamental human right.
Only 1, 200 oil and gas extraction jobs, or 2.6% of the total, were lost during the recent recession, and companies have since added back 7, 200 jobs in the sector.
He also said that his company would probably bring in third parties to assist in the oil extraction but said there would be "no shortage" of interest from other firms.
As Peter recently explained, this deduction of 15% of gross income from oil, gas, silver and gold extraction, can be applied creatively and cumulatively on the yearly gross returns from a mine or well.
The RSPB has also voiced concerns about any potential oil extraction around Rathlin Island, off County Antrim, a Special Area of Conservation and a Special Protection Area (SPA), which it argues is too important for wildlife to allow that to happen.
In the worst cases, the extraction of a country's lucrative resources diamonds in Sierra Leone, diamonds and oil in Angola, oil in Nigeria has actively encouraged a corrupt elite, fuelled wars, destroyed state institutions and distorted exchange rates.
And the risk of earthquakes, which has long been present in conventional oil-and-gas extraction, is modest and mitigated by monitoring.
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Other industry insiders have pointed to the fact that the oil extraction in Canada is the largest employer in Alberta, and a major source of revenue to Canada.
Unable to stop Canadian oil drilling and tar sand extraction programs, environmental groups are now trying to block any pipeline that is proposed out of the oil producing regions.
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