2012年,美国能源独立(或称能源自足)是全球能源行业的热点话题之一。作为全球能源消耗大国,美国能源自给率的大幅提高,必将引发全球能源格局的深刻变化。非常规油气的突破性增长,正在引发一场全球性能源领域的巨大变革;美国天然气价格的大幅走低与出口,正在促使能源结构调整与国际贸易转向;美 In 2012, the United States’s energy independence (or energy self-sufficiency) is one of the hot topics in the global energy industry. As the world’s largest energy consumer, the substantial increase in energy self-sufficiency in the United States will surely trigger profound changes in the global energy pattern. Breakthroughs in unconventional oil and gas are triggering a dramatic change in the global energy arena; sharply lower natural gas prices and exports in the United States are prompting a shift in energy mix and international trade;