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Located in northwest-central Alberta,the Peace River oil sands deponit is the smallest of four large deposits of oil sands of the Western Canadian Sedimentary Basin formation. The Peace River oil sands lie, generally, in the watershed of the Peace River. The Peace River oil sands deposits are the smallest in the province. The largest, the Athabasca oil sands, are located to the east, the second largest the, Cold Lake oil sands deposit is south of Athabaska and the Wabasco oil sands are south of Athabaska and usually linked to it.〔 According to the ''Petroleum Economist'', oil sands occur in more than 70 countries, but the bulk is found in these four regions together covering an area of some . In 2007 the World Energy Council estimated that these oil sands areas contained at least two-thirds of the world's discovered bitumen in place at the time.〔(【引用サイトリンク】title=Survey of Energy Resources 2007: Natural Bitument - Resource Quantities and Geographical Distribution )〕 with These an initial oil-in-place reserve of barrels), an amount comparable to the total world reserves of conventional oil. Whereas the Athabasca oil sands lie close enough to the surface that the sand can be scooped up in open-pit mines, and brought to a central location for processing, the Peace River deposits are considered too deep, and are exploited in situ using steam-assisted gravity drainage (SAGD) and Cold Heavy Oil Production with Sand (CHOPS). == History == (詳細はtar sands attending the conference in that year entitled the ''Symposium on Tar Sand and Oil Shale.'' By 2003 with the rising price of oil rising price of oil, and the improvement of enhanced recovery techniques such as thermal in-situ methods, the Peace River oil sands had become much more viable. Capital expenditure increased between 2006 to 2015 totalling $125 billion in all oil sands projects leading to a severe labor shortage in Alberta and driven unemployment rates to their lowest level in history – the lowest of all 10 Canadian provinces and 50 U.S. states.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Peace River oil sands」の詳細全文を読む スポンサード リンク
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