进入2009年1月份,国际油价先升后降,总体呈现波动上升态势。1月初,中东加沙地带发生武装冲突,俄罗斯与乌克兰有关天然气问题再起争执,加上欧佩克成员国纷纷表示,将严格履行已达成的减产协议,推动了油价短暂走高。而后在对美国经济的担心、投机者撤资、库存增加等因素的影响下,油价又出现回落。1月份,WTI、 Into January 2009, the international oil prices rose first and then dropped, showing an overall upward trend in volatility. In early January, armed clashes broke out in the Middle East and Gaza Strip, another dispute over Russia and Ukraine regarding natural gas, and OPEC member countries all indicated that they will strictly comply with the agreement on production cuts already reached and promote a temporary increase in oil prices. Then, under the influence of fears on the U.S. economy, divestment by speculators and increase in inventories, oil prices dropped again. In January, WTI,