Natural gas

Natural gas
CARLOS534 · CC BY-SA 4.0 · source
Name	Natural gas
Type	Fossil fuel
Major deposits	* Permian Basin * Gulf of Mexico * Siberian Basin * North Sea * Caspian Sea
Producers	* United States * Russia * Iran * Qatar * Canada
Unit	cubic metres

Natural gas is a naturally occurring hydrocarbon mixture used as a major energy source worldwide. It functions as a primary feedstock for chemical industries, a fuel for power generation, and a raw material for fertilizer production. Major producers and regions, historical developments, and technological advances have shaped its role in modern energy systems.

Composition and Properties

Natural gas is principally composed of methane, accompanied by higher alkanes and trace gases; its detailed composition varies by reservoir. Scientific analyses reference measurements from U.S. Geological Survey surveys, International Energy Agency reports, and academic studies at institutions such as Massachusetts Institute of Technology, Stanford University, and Imperial College London. Typical constituents include methane, ethane, propane, butane, and impurities like carbon dioxide and hydrogen sulfide; chromatographic and spectrometric methods developed by American Chemical Society authors and teams at Oak Ridge National Laboratory quantify these fractions. Physical properties—calorific value, density, Wobbe index—are standardized in protocols from American Society for Testing and Materials and International Organization for Standardization committees. Thermodynamic behavior of gas mixtures is modeled using equations of state cited in work from National Institute of Standards and Technology and textbooks from Cambridge University Press.

Occurrence and Extraction

Gas accumulates in geological traps associated with sedimentary basins; exploration employs seismic surveys and well logging techniques refined by companies like Schlumberger, Halliburton, and Baker Hughes. Major basins include the Permian Basin, Gulf of Mexico, Siberian Basin, North Sea, and Caspian Sea. Exploration history references milestones such as discoveries in Texas and the development of offshore fields near Norway and Brazil. Extraction technologies range from conventional vertical wells to unconventional methods such as hydraulic fracturing and directional drilling pioneered in regions like Barnett Shale, Marcellus Shale, and Bakken Formation. Regulatory and public debates around drilling practices involve agencies and actors including U.S. Environmental Protection Agency, European Commission, and advocacy groups like Greenpeace and Sierra Club.

Production and Processing

After extraction, production systems separate oil, condensate, water, and gases at facilities designed by engineering firms such as Fluor Corporation and Bechtel. Processing plants remove impurities through amine treating, dehydration, and sulfur recovery units influenced by designs from ConocoPhillips and Shell. LNG production uses liquefaction trains developed by licensors like Air Liquide and Linde, while petrochemical feedstock production links to companies such as Dow Chemical, BASF, and SABIC. Measurement and custody transfer follow standards by American Gas Association and International Organization for Standardization. Historical production increases are documented in datasets from BP statistical reviews and EIA analyses.

Transportation and Storage

Transportation networks include pipeline systems, LNG carriers, and compressed natural gas infrastructure. Major pipeline operators include Gazprom, TransCanada, and Energinet; historic projects such as the Nord Stream pipeline and the Trans-Saharan Gas Pipeline illustrate geopolitical scale. LNG shipping is dominated by fleets operated by firms like Mitsui O.S.K. Lines and Teekay Corporation, with regasification terminals in ports such as Rotterdam and Incheon. Storage solutions encompass depleted reservoirs, salt caverns, and underground storage developed in regions like Germany and United Kingdom. Regulatory frameworks and safety codes are influenced by organizations like International Maritime Organization and American Petroleum Institute.

Uses and Applications

Natural gas fuels electric power plants operated by utilities such as Exelon and EDF, industrial boilers at manufacturers like ArcelorMittal, and residential heating systems in metropolitan areas including New York City and London. It is a feedstock for ammonia production in facilities linked to Yara International and Mosaic Company, and for hydrogen production in projects at Air Products and Chemicals and Linde. Transportation uses include compressed natural gas fleets in cities like Los Angeles and LNG bunkering initiatives in ports such as Singapore. Emerging applications intersect with renewable systems researched at institutions like National Renewable Energy Laboratory and Fraunhofer Society.

Environmental and Health Impacts

Combustion of natural gas emits carbon dioxide and water vapor; lifecycle assessments from Intergovernmental Panel on Climate Change and International Energy Agency quantify greenhouse gas impacts relative to other fuels. Methane leakage across the value chain—documented in studies by Environmental Defense Fund and Harvard University—is a potent contributor to near-term warming. Local air quality effects from combustion and extraction sites have been studied by researchers at Johns Hopkins University and Columbia University, and regulatory responses involve agencies such as U.S. Environmental Protection Agency and European Environment Agency. Incidents like well blowouts and pipeline ruptures prompted investigations by bodies including National Transportation Safety Board and Bureau of Safety and Environmental Enforcement.

Economics, Regulation, and Geopolitics

Global markets are shaped by price hubs, long-term contracts, and spot markets; reference points include the Henry Hub, Title Transfer Facility, and trading platforms like CME Group. Major state actors—Russia, Qatar, United States, Iran—and multinational firms such as BP, Shell, TotalEnergies, and ExxonMobil influence supply, demand, and infrastructure investment. Geopolitical events, including disputes involving Ukraine and sanctions enacted by European Union, affect pipeline flows and LNG trade. Regulatory regimes vary: energy policy decisions in United Kingdom, China, India, and Japan integrate security, environmental, and industrial objectives. Financial instruments, market reforms, and carbon pricing mechanisms discussed at forums like World Economic Forum and negotiated under United Nations Framework Convention on Climate Change frameworks further modulate the sector.

Category:Fossil fuels