天然气(气田气、油田气)经过加工,回收乙烷等较重组份—天然气液,其产量在美国一般作为石油产量的一部分予以分布。例如1979年,美国生产石油4.7516亿吨,其中包括天然气液5525万吨,天然气液占石油产量的11.63%,加拿大的情况和美国类似。生产较多天然气液的国家要具备三个条件:①气田气和油田气的产量较高;②天然 Natural gas (gas, gas) is processed to recover heavier components, such as natural gas, such as ethane, whose production is generally distributed in the United States as part of its oil production. For example, in 1979, the United States produced 476.16 million tons of oil, including 55.25 million tons of natural gas liquids and natural gas liquids, accounting for 11.63% of oil production. The situation in Canada is similar to that in the United States. Countries that produce more natural gas liquids should have three conditions: ① higher gas and gas production; ② natural