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在天然气的洞穴是什么样的呢?

我认为天然气地下洞室在地球上有实质性的体积和气体以气态形式存在。

因此我想知道它看起来像在这样的洞穴(当然与人造光)。将看到一个岩石在大距离天空吗?

这些洞穴的实际体积是什么?这是正确的甲烷海洋或海洋?

他们是空的或者是气体和固体物质混在一起吗?

回答

* *充满天然气的洞穴看起来像一个普通的洞穴。然而,天然气是很少在洞穴丰富。* *大多数天然气储层砂岩孔隙空间的发生。这些孔隙空间一般直径约1毫米。这是砂岩-蓝绿色的显微照片颜色是孔隙空间;Q, F、L和M是石英、长石、岩屑和云母:! [Helsby砂岩][1]储层岩石孔隙水也含有“形成”在不同的比例。水和碳氢化合物之间的关系非常复杂,根据流体组成、储层温度、压力和矿物学的岩石。洞穴呢?微量的甲烷可能发生在许多,如果不是大多数,洞穴,我们在这里谈论丰富的甲烷。这是更常见的,但它发生。 In certain limestones pore spaces can be quite large — up to several metres in diameter. This is called [vuggy porosity][2]. If the limestone is charged with natural gas, the vugs will fill with gas, just like the other pores. The space would look like any other limestone cavity. Very large ones are rare, based on a typical [power law][3] size distribution. There are (copyright and unlicensed) images of such super-pores [here][4] and [here][5]. Recently [Mattey et al. (2013; EPSL 374)][6] wrote about methane in a karst in Gibraltar. I'd estimate that less than 1% of the world's gas is held in vuggy reservoirs. There's another kind of cavern in which you can find natural gas: man-made ones. Natural gas [is often stored underground][7], usually in porous rocks, but sometimes in caverns dissolved out of salt. [Around a quarter][8] of natural gas stock is stored this way in the US. [Here's a video][9] from such a salt cavern. Last thing: methane seas can only occur at low temperature. As far as I know, [liquefied natural gas or LNG][10] is only stored above ground or on ships in tanks. Lots of natural gas reservoirs have [very light hydrocarbon liquids][11] in them — but again the liquid would be in tiny pore spaces, not caverns. [1]: http://i.stack.imgur.com/badnU.jpg [2]: http://en.wikipedia.org/wiki/Porosity#Types_of_geologic_porosities [3]: http://en.wikipedia.org/wiki/Power_law [4]: http://www.geoexpro.com/articles/2013/06/heavy-oil-from-an-ancient-reef [5]: https://www.spec2000.net/17-speccarb.htm [6]: http://www.sciencedirect.com/science/article/pii/S0012821X13002495 [7]: http://www.eia.gov/pub/oil_gas/natural_gas/analysis_publications/storagebasics/storagebasics.html [8]: http://www.eia.gov/todayinenergy/detail.cfm?id=3190 [9]: https://www.youtube.com/watch?v=ThbkFfXjhxk [10]: http://en.wikipedia.org/wiki/Liquefied_natural_gas [11]: http://en.wikipedia.org/wiki/Natural-gas_condensate

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\ begingroup美元有人在英国地质调查局就在推特上盐穴储气库。 \ endgroup美元
- - - - - -马特·霍尔
2015年5月20日,在他们吗

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