Editing Hubbert curve (section)

==Application==

=== Peak oil ===
{{main|Peak oil}}
Using the curve, Hubbert modeled the rate of petroleum production for several regions, determined by the rate of new oil well discovery, and extrapolated a world production curve.<ref name='hubbert_NEFF'/> The relative steepness of decline in this projection is the main concern in peak oil discussions. This is because a steep drop in the production implies that global oil production will decline so rapidly that the world will not have enough time to develop sources of energy to replace the energy now used from oil, possibly leading to drastic social and economic impacts.

===Other resources===
{{main|Hubbert peak theory}}
Hubbert models have been used to predict the production trends of various resources, such as [[peak gas|natural gas]] (Hubbert's attempt in the late 1970s resulted in an inaccurate prediction that natural gas production would fall dramatically in the 1980s), [[Peak coal|Coal]], [[Peak uranium|fissionable materials]], [[peak helium|Helium]], transition metals (such as [[Peak copper|copper]]), and [[peak water|water]].  At least one researcher has attempted to create a Hubbert curve for the [[whaling]] industry and caviar,<ref>Ugo Bardi and Leigh Yaxley.  ''[https://web.archive.org/web/20120304222407/http://www.aspoitalia.it/?option=com_content&task=view&id=34&Itemid=39]''  Proceedings of the 4th [[Association for the Study of Peak Oil and Gas|ASPO]] Workshop, Lisbon 2005</ref> while another applied it to [[cod]].<ref>Jean Laherrere.  ''[http://www.hubbertpeak.com/laherrere/multihub.htm Multi-Hubbert Modeling] {{Webarchive|url=https://web.archive.org/web/20131028052636/http://www.hubbertpeak.com/laherrere/multihub.htm |date=2013-10-28 }}.'' July, 1997.</ref>

=== Critique ===
After the predicted early-1970s peak of oil production in the U.S., production declined over the following 35 years in a pattern closely matching the Hubbert curve. However, new extraction methods began reversing this trend beginning in the mid-2000s decade, with production reaching 10.07 million b/d in November 2017 – the highest monthly level of crude oil production in U.S. history. As such, the Hubbert curve has to be calculated separately for different oil provinces, whose exploration has started at a different time, and oil extracted by new techniques, sometimes called [[unconventional oil]], resulting in individual Hubbert cycles.<ref name='Hubbert cycle'>{{cite journal |last1=Patzek |first1=Tad |date=2008-05-17 |title=Exponential growth, energetic Hubbert cycles, and the advancement of technology |url=https://www.researchgate.net/publication/228663031 |journal=Archives of Mining Sciences |volume=53 |issue=2 |pages=131–159 |access-date=2018-11-17}}</ref> The Hubbert Curve for US oil production is generally measured in years.