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Solar thermal enhanced oil recovery : ウィキペディア英語版
Solar thermal enhanced oil recovery
Solar thermal enhanced oil recovery (abbreviated solar EOR) is a form of thermal enhanced oil recovery (EOR), a technique applied by oil producers to extract more oil from maturing oil fields. Solar EOR uses solar thermal arrays to concentrate the sun’s energy to heat water and generate steam. The steam is injected into an oil reservoir to reduce the viscosity, or thin, heavy crude thus facilitating its flow to the surface. Thermal recovery processes, also known as steam injection, have traditionally burned natural gas to produce steam. Solar EOR is proving to be a viable alternative to gas-fired steam production for the oil industry. Solar EOR can generate the same quality steam as natural gas, reaching temperatures up to 750˚F (400˚C) and 2,500 PSI.
While typical fuel-fired steamflood operations inject steam into the ground at a constant rate, research conducted by leading oil producers shows that variable rate steam injection has no negative impact on production levels. In effect, solar EOR could supply up to 80 percent of a field’s annual steam requirements, by injecting solar-generated steam during the sunny hours, and a reduced amount of gas-fired steam at night or in less sunny weather or climates. This method of integrating solar EOR will displace larger amounts of gas consumption without affecting oil output.〔Van Heel, A.P.G.; Shell Technology Oman; van Wunnik, J.N.M.; Bentouati, S.; Terres, R.; Petroleum Development Oman, ("The Impact of Daily and Seasonal Cycles In Solar-Generated Steam On Oil Recovery" ), "Society of Petroleum Engineers", 11–13 April 2010〕
==Technology==

While there are many types of solar-to-steam technologies, often referred to as solar thermal or concentrated solar power, only two are currently deployed for solar EOR.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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