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The Orinoco Belt is a territory in the southern strip of the eastern Orinoco River Basin in Venezuela which overlies one of the world's largest deposits of petroleum. Its local Spanish name is ''Faja Petrolífera del Orinoco'' (Orinoco Petroleum Belt). The Orinoco Belt is located Guárico and south of the Anzoátegui, Monagas, and Delta Amacuro states, and it follows the line of the river. It is approximately from east to west, and from north to south, with an area about . ==Oil reserves== The Orinoco Belt consists of large deposits of extra heavy crude. Venezuela's heavy oil deposits of about , found primarily in the Orinoco Petroleum Belt, are estimated to approximately equal the world's reserves of lighter oil.〔 〕 Petróleos de Venezuela S.A. has estimated that the producible reserves of the Orinoco Belt are up to 〔 〕 which would make it the largest petroleum reserve in the world, slightly ahead of the similar unconventional oil source in the Athabasca oil sands, and before Saudi Arabia〔. 〕 In 2009, the US Geological Survey increased the estimated reserves to of oil which is "technically recoverable (producible using currently available technology and industry practices)." No estimate of how much of the oil is economically recoverable was made. The Orinoco Belt is currently divided into four exploration and production areas. These are: Boyacá (before Machete), Junín (before Zuata), Ayacucho (before Hamaca), and Carabobo (before Cerro Negro). The current exploration area is about . 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「Orinoco Belt」の詳細全文を読む スポンサード リンク
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