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| style="padding:2px;" | <h2 id="mp-tfa-h2" style="margin:3px; background:#0068b3; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #0068b3; text-align:left; color:#FFF; padding:0.2em 0.4em;">This week's featured topic page<span style="font-size:85%; font-weight:normal;"></span></h2> | | style="padding:2px;" | <h2 id="mp-tfa-h2" style="margin:3px; background:#0068b3; font-family:inherit; font-size:120%; font-weight:bold; border:1px solid #0068b3; text-align:left; color:#FFF; padding:0.2em 0.4em;">This week's featured topic page<span style="font-size:85%; font-weight:normal;"></span></h2> | ||
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| style="color:#000;" | <div id="mp-tfa" style="padding:2px 5px">'''[[ | | style="color:#000;" | <div id="mp-tfa" style="padding:2px 5px">'''[[Propping agents and fracture conductivity]]''' | ||
The | Propping agents are required to "prop open" the [[Hydraulic fracturing|fracture]] once the pumps are shut down and the fracture begins to close. The ideal propping agent is strong, resistant to crushing, resistant to corrosion, has a low density, and is readily available at low cost. The products that best meet these desired traits are silica sand, resin-coated sand (RCS), and ceramic proppants. | ||
[http://petrowiki.org/ | [http://petrowiki.org/Propping_agents_and_fracture_conductivity Read more....] | ||
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'''[[PetroWiki news]]''' | '''[[PetroWiki news]]''' | ||
[http://powersource.post-gazette.com/powersource/companies-powersource/2015/01/27/Drones-may-change-search-for-oil-and-gas-field-hazards/stories/201501200012 '''Drones may change search process for gas field hazards'''] by Laura Legere | |||
[http://www.cleveland.com/business/index.ssf/2015/01/oil_and_gas_industry_creating.html '''Oil and gas industry creating new age of abundance, says American Petroleum Institute'''] by John Funk | [http://www.cleveland.com/business/index.ssf/2015/01/oil_and_gas_industry_creating.html '''Oil and gas industry creating new age of abundance, says American Petroleum Institute'''] by John Funk | ||
[http://www.spe.org/jpt/article/7788-technology-update-1-7/ '''Nanochemistry Drives New Method for Removal and Control of Wax'''] by Dauren Tukenov | [http://www.spe.org/jpt/article/7788-technology-update-1-7/ '''Nanochemistry Drives New Method for Removal and Control of Wax'''] by Dauren Tukenov | ||
[http://www.spe.org/news/category/feature '''More SPE featured news...'''] | [http://www.spe.org/news/category/feature '''More SPE featured news...'''] | ||
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<center>'''Featured New Page'''</center> | <center>'''Featured New Page'''</center> | ||
<center>'''[[ | <center>'''[[Gas chromatography]]'''</center> | ||
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Gas chromatography (GC), is commonly used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture (the relative amounts of such components can also be determined). | |||
In gas chromatography, the mobile phase (or "moving phase") is a carrier gas, usually an inert gas like helium or an unreactive gas like nitrogen. The stationary phase is a microscopic layer of liquid or polymer on an inert solid support, inside a piece of glass or metal tubing called a column. The instrument used to perform gas chromatography is called a gas chromatograph (or "aerograph", "gas separator"). | |||
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Revision as of 15:38, 28 January 2015
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