美国《油气杂志》1977年8月份出版的“2000年石油”专号刊载一篇文章,题为《天然气加工的四个时期》,摘要如下:本世纪美国石油能量的一半以上是由天然气加工供应的。约从1900年到1976年气体加工者已经提供了约130亿桶天然气液体和约500万亿立方英尺的天然气来满足需要。按当量原油计算,上述数字约等于1100亿桶原油,比1859～1976年美国石 An article published in the August 1977 issue of Oil & Gas Magazine 2000 entitled “Four Processes of Natural Gas Processing” is summarized as follows: More than half of the U.S. oil energy in this century was supplied by natural gas processing and supply of. From about 1900 to 1976 gas processors have supplied about 13 billion barrels of natural gas liquids and about 500 trillion cubic feet of natural gas to meet their needs. Equivalent crude oil calculation, the above figure is equal to about 110 billion barrels of crude oil, more than 1859 ~ 1976 American stone