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Confusion of condensate and natural gas liquid
"Condensate" as the term is used in the oil industry is what condenses at the surface in an ambient temperature separator. It is basically C5+ (pentane and a bit higher). Can be mixed into gasoline, even in the summer. It's essentially very high API oil, both chemically and economically. Think of it as the "associated oil" from a gas well. The way you would have associated gas with an oil well.
NGLs are the non-methane gases within a natural gas separated stream. They do NOT condense at a surface separator. You need a refrigeration plant to condense them.
The article says, "One method to deal with this problem is to re-inject dried gas free of condensate to maintain the underground pressure and to allow re-evaporation and extraction of condensates. More frequently, the liquid condenses at the surface, and one of the tasks of the gas plant is to collect this condensate. The resulting liquid is called natural gas liquid (NGL) and has commercial value."
You are confusing NGL and condensate and they are not the same thing. Condensate is mostly C5+, recovered at the wellhead. NGL is mostly C2-C4 (ethane, propane, n-butane, isobutene). Recovered at a refrigeration plant, away from the wellhead. Look up the boiling point of ethane! It is not condensing at the wellhead surface. Just no.
Please, no arguments about how any gas can become a liquid with cooling or the converse...or about how refrigeration plants have condensers. You are not helping your public who may have a very reasonable suspicion that NGL=condensate, by confusing the terms in article. In contrast, the block diagram under natural gas processing chapter explains this right.
Town gas is not natural gas
- Agree. Both town gas and biogas do not belong here, except as a brief mention as other sources of utility gas. Plazak (talk) 00:46, 7 June 2015 (UTC)
Infographic misses important gas streams
In the top infographic, some major gas streams are missing: Norway and the Netherlands are the world's 3rd resp. 6th largest exporters of natural gas (2013). https://www.cia.gov/library/publications/the-world-factbook/rankorder/2251rank.html?countryname=Russia&countrycode=rs®ionCode=cas&rank=1#rs . Is someone able to add these, or contact the uploader, called Crossswords, to do so? 22.214.171.124 (talk) 21:55, 1 December 2014 (UTC)
what about burning springs?
The term burning springs is the name of a few towns, but it is also defined at Burning springs as natural gas escaping at a spring for water, often burning as it escapes. Nothing I have ever seen, so is there more to say on this topic, in this article? Just wondering. Canandaigua (city), New York was early noted for such a burning spring. --Prairieplant (talk) 00:03, 7 June 2015 (UTC)
Inaccuracies in the "Fracking" section: first paragraph
The section on hydraulic fracturing is filled with garbled with half-truths, overgeneralizations, and false statements. The section's first paragraph starts out:
- “Releasing natural gas from subsurface porous rock formations is accomplished by a process called hydraulic fracturing or "hydrofracking".”
The sentence strongly implies that the only way to release gas from rock is by hydraulic fracturing. The statement ignores all the wells that release gas trapped for millions of years, but without hydraulic fracturing. To be accurate, the phrase “is accomplished” should be changed to “is often accomplished.”
The end sentence of the paragraph reads:
- “The development of technology for directional and horizontal drilling, and facilities to import and export liquefied natural gas worldwide, among other things, provided for a drastic acceleration between 2000-2012 in hydraulic fracturing to produce unconventional gas.”
To write that LNG facilities are responsible for the recent increase in hydraulic fracturing of tight reservoirs is silly on the face of it, because, in fact, none of the tight gas in the US or Canada, the two places where the boom took place, is being transported as LNG. Whoever inserted this statement completely misunderstood the cited reference (Robert W Kolb: “The Natural Gas Revolution and the World's Largest Economies), which states that LNG is a very important recent development, but does not give it credit for the unconventional gas boom.
1. Inserting "is often" or "may be" instead of "is" would indicate it doesn't always occur with hydraulic fracturing.
2. The development of LNG facilities did not provide for the rapid growth in unconventional gas production between 2000-2012. The development of technology for directional and horizontal drilling, however, seems relevant to the article and appropriate in context of what provided for such rapid growth. Qjmalecki (talk) 05:35, 1 September 2015 (UTC)qjmalecki
- 1) Exactly my point. Conventional, or to be more accurate, non-hydraulically fractured wells, also release gas that has been trapped in the rock for millions of years. Every gas well releases gas trapped in the rock; that's their whole purpose. If you want the first sentence to discuss fracking only, then the wording will have to be narrower and more descriptive than the general "Releasing natural gas from subsurface porous rock formations"
- 2) I agree that advances in horizontal drilling and hydraulic fracturing are relevant and should be mentioned. But it is obvious to anyone familiar with the subject that LNG, important as it is, was not one of the causes of the North American gas boom. This sort of obvious and careless mistake discredits Wikipedia. Time to move on to paragraph 2. Cheers. Plazak (talk) 18:32, 1 September 2015 (UTC)
The phrase, "cropping of delivered power," in the Transportation section, should be rewritten. It is a very strange way of making the point--try "reduction of delivered power" or something like that.126.96.36.199 (talk) 13:19, 2 September 2015 (UTC)