Since 1990, methane emissions from natural gas systems have dropped 14% during a period when production has increased 50%. This is effectively a 43% reduction in the rate of emissions, further demonstrating industry’s continued progress in minimizing emissions as we maximize efficiency in getting energy to the consumer.
今天，美国有机会将天然气作为我们未来的燃料接受。美国已经拱起俄罗斯成为世界上最大的天然气生产国，并被预计成为一个未来十年内的净出口商。This development is attributable to technological innovation in the areas of horizontal drilling and hydraulic fracturing that turned previously inaccessible natural gas resources into producing wells — a 100-year, secure and safe supply of cleanburning natural gas. It has also paved the way for significant economic growth and opportunity. Today,天然气行业每年都支持近300万就业机会，增加了全国经济的385亿美元。
This document is designed to provide guidance for the quantification of GHG emissions associated with operations along the LNG value chain, i.e. liquefaction; shipping; loading/unloading; regasification; and storage.
甲烷是天然气在我们的家庭和我们使用businesses, so operators have a strong incentive to bring all methane to market. Industry has led the way by developing new technology to capture gas, maintaining equipment to minimize leaks, as well as avoiding process releases.
Natural gas is made up of just two elements - carbon and hydrogen. It is part of a family of chemicals known as hydrocarbons, which also includes oil and gasoline. As its name suggests, natural gas comes out of the ground as a gas; oil, gasoline and other hydrocarbons are recovered mixed together in a liquid called crude oil.
液化天然气（LNG）can play an important role in diversifying and expanding natural gas supplies and should be a part of a comprehensive, market-based energy policy that also encourages the development of domestic natural gas resources.