Over the past five years, rapid growth in U.S. onshore natural gas and oil production has led to increased volumes of natural gas plant liquids (NGPL) and liquefied refinery gases (LRG). The increasing economic importance of these volumes, as a result of their significant growth in production, has revealed the need for better data accuracy and transparency to improve the quality of historical data and projections for supply, demand, and prices of these liquids, co-products, and competing products. To reduce confusion in terminology and improve its presentation of data, EIA has worked with industry and federal and state governments to clarify gas liquid terminology and has developed the term Hydrocarbon Gas Liquids, or HGL.
This November 2014 report by the U.S. Energy Information Administration provides an introduction to HGL, defining key terms, describing and mapping key assets, and providing 2000—2014 data on important trends, as well as some insight into the short-term outlook. This report provides a reference that supports and explains changes to EIA’s real-time analysis and outlooks, data presentation on EIA’s website, and, ultimately, survey data collection.