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This week's featured topic page Propping agents and fracture conductivity Propping agents are required to "prop open" the 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. Read more.... In the news this week PetroWiki news Drones may change search process for gas field hazards by Laura Legere Oil and gas industry creating new age of abundance, says American Petroleum Institute by John Funk Nanochemistry Drives New Method for Removal and Control of Wax by Dauren Tukenov More SPE featured news...

New topic pages New pages are continually added to PetroWiki. These new pages always need subject experts to help develop these pages into high quality resources. With so many different roles within PetroWiki that have to do with contributing there is undoubtedly a place that will fit perfectly with your expertise and time. Read more about becoming a champion for PetroWiki… Featured New Page Gas chromatography 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").

What is PetroWiki? PetroWiki was created from the seven volume Petroleum Engineering Handbook (PEH) published by the Society of Petroleum Engineers (SPE). PetroWiki preserves the PEH content in unaltered form (page names that start with PEH:), while allowing SPE's membership to update and expand content from the published version. Pages that do not have PEH: at the beginning may have started with content from the PEH, but have been modified over time by contributors to the wiki. Content in PetroWiki is moderated by at least two members with subject matter expertise. This helps to ensure that the information found in PetroWiki is technically accurate. Disclaimer Unlike some other online wikis, PetroWiki content is copyright SPE. For information about using content from PetroWiki, see PetroWiki:Permissions.

How can I contribute to PetroWiki? PetroWiki is a living document and therefore the content should be enhanced to include newer technologies and current information. Share your knowledge with others and help update PetroWiki at the same time! You can't "break" the wiki. Follow these basic steps to get started: Log in Search for the topic of your choice Open the topic page Make changes Save Adding links to good papers in OnePetro and elsewhere is a great way to enrich existing content pages. Creation of pages about specific fields are welcome. Knowing the basics of the reservoir and how the field was developed over time can provide valuable information to others. (See Prudhoe Bay field and Kuparuk River field as examples) If you are an SPE professional member, you must log in. [Use your SPE website login.] Help with editing Pages that start with PEH: cannot be edited. For more information, see PetroWiki:Frequently asked questions Content categorization - SPE has finalized a technical taxonomy that is being used in PetroWiki, OnePetro, and other SPE content.

How do I use PetroWiki? Search box Use the search box at upper right to find content of interest. PetroWiki is indexed by search engines, so you also may find content of interest through your favorite search engine. Glossary Use the Glossary to find terms and definitions. Help Use the Help to locate guides, videos, and slideshows to explain editing. Translator English not your first language? You'll find Google Translate in the navigation under Toolbox. While the translations are far from perfect and technical terms may not translate well, it may help with understanding. When you're on a translated page, mouseover the text to see the original text for ease of comparison.