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Drip gas : ウィキペディア英語版
Natural-gas condensate
Natural-gas condensate is a low-density mixture of hydrocarbon liquids that are present as gaseous components in the raw natural gas produced from many natural gas fields. It condenses out of the raw gas if the temperature is reduced to below the hydrocarbon dew point temperature of the raw gas.
The natural gas condensate is also referred to as simply condensate, or gas condensate, or sometimes natural gasoline because it contains hydrocarbons within the gasoline boiling range. Raw natural gas may come from any one of three types of gas wells:〔(International Energy Glossary ) (a page from the website of the Energy Information Administration)〕〔(Natural gas processing ) (a page from the website of the Energy Information Administration)〕
*Crude oil wells—Raw natural gas that comes from crude oil wells is called ''associated gas''. This gas can exist separate from the crude oil in the underground formation, or dissolved in the crude oil. Condensate produced from oil wells is often referred to as ''lease condensate''.
*Dry gas wells—These wells typically produce only raw natural gas that does not contain any hydrocarbon liquids. Such gas is called ''non-associated'' gas. Condensate from dry gas is extracted at gas processing plants and, hence, is often referred to as ''plant condensate''.〔
*Condensate wells—These wells produce raw natural gas along with natural gas liquid. Such gas is also called ''associated'' gas and often referred to as wet gas.

==Composition==
There are many condensate sources worldwide and each has its own unique gas condensate composition. However, in general, gas condensate has a specific gravity ranging from 0.5 to 0.8, and is composed of hydrocarbons such as propane, butane, pentane, hexane, etc. Natural gas compounds with more carbon atoms (e.g. pentane, or blends of butane, pentane and other hydrocarbons with additional carbon atoms) exist as liquids at ambient temperatures. Additionally, condensate may contain additional impurities such as:〔(Natural Gas Condensate ) Marathon Oil Company MSDS〕〔(Natural Gas Condensate ) Phillips Petroleum Company MSDS〕〔(Condensate (Alaska) ) ConocoPhillips of Alaska MSDS〕〔( Natural Gas Condensate ) Amerada Hess Corporation MSDS〕
*Hydrogen sulfide ()
*Thiols traditionally also called mercaptans (denoted as RSH, where R is an organic group such as methyl, ethyl, etc.)
*Carbon dioxide ()
*Straight-chain alkanes having from 2 to 12 carbon atoms (denoted as to )
*Cyclohexane and perhaps other naphthenes
*Aromatics (benzene, toluene, xylenes, and ethylbenzene)

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Natural-gas condensate」の詳細全文を読む



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