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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Fixed platform</span></span>
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<p>A <b>fixed platform</b> is a type of <a href="Offshore_platform" class="mw-redirect" title="Offshore platform">offshore platform</a> used for the <a href="Extraction_of_petroleum" title="Extraction of petroleum">extraction of petroleum</a> or <a href="Natural_gas" title="Natural gas">gas</a>. These platforms are built on <a href="Concrete" title="Concrete">concrete</a> and/or <a href="Steel" title="Steel">steel</a> legs directly planted onto the seabed, supporting a deck with space for <a href="Drilling_rig" title="Drilling rig">drilling rigs</a>, production facilities and crew quarters.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Such platforms are, by virtue of their immobility, designed for very long-term use. Various types of structure are used, steel jacket, concrete <a href="Caisson_(engineering)" title="Caisson (engineering)">caisson</a>, floating steel and even floating concrete. Steel jackets are vertical sections made of tubular steel members, and are usually piled into the seabed.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Concrete caisson structures, pioneered by the <a href="Condeep" title="Condeep">Condeep</a> concept, often have in-built oil storage in tanks below the sea surface and these tanks were often used as a flotation capability, allowing them to be built close to shore (<a href="Norway" title="Norway">Norwegian</a> <a href="Fjord" title="Fjord">fjords</a> and <a href="Scotland" title="Scotland">Scottish</a> <a href="Firth" title="Firth">firths</a> are popular because they are sheltered and deep enough) and then floated to their final position where they are sunk to the seabed. Fixed platforms are economically feasible for installation in water depths up to about 500 feet (150 m); for deeper depths a floating production system, or a subsea pipeline to land or to shallower water depths for processing, would usually be considered.
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<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="List_of_tallest_oil_platforms" title="List of tallest oil platforms">List of tallest oil platforms</a></li>
<li><a href="List_of_tallest_freestanding_steel_structures" title="List of tallest freestanding steel structures">List of tallest freestanding steel structures</a></li>
<li><a href="Bullwinkle_Platform" class="mw-redirect" title="Bullwinkle Platform">Bullwinkle Platform</a></li>
<li><a href="Pompano_Platform" title="Pompano Platform">Pompano Platform</a></li>
<li><a href="Offshore_geotechnical_engineering" title="Offshore geotechnical engineering">Offshore geotechnical engineering</a></li>
<li><a href="Protocol_for_the_Suppression_of_Unlawful_Acts_against_the_Safety_of_Fixed_Platforms_Located_on_the_Continental_Shelf" title="Protocol for the Suppression of Unlawful Acts against the Safety of Fixed Platforms Located on the Continental Shelf">Protocol for the Suppression of Unlawful Acts against the Safety of Fixed Platforms Located on the Continental Shelf</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120107133042/http://www.api.org/aboutoilgas/sectors/explore/operatedeeperwater.cfm">"Offshore Production Facilities"</a>. <i>www.api.org</i>. Archived from <a rel="nofollow" class="external text" href="http://www.api.org/aboutoilgas/sectors/explore/operatedeeperwater.cfm">the original</a> on 7 January 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">29 May</span> 2017</span>.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite id="CITEREFPike" class="citation web cs1">Pike, John. <a rel="nofollow" class="external text" href="http://www.globalsecurity.org/military/systems/ship/platform-fixed.htm">"Fixed Platform"</a>. <i>www.globalsecurity.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">29 May</span> 2017</span>.</cite></span>
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This article is issued from <a class="external text" title="Last edited on 2024-05-02" href="https://en.wikipedia.org/wiki/?title=Fixed_platform&oldid=1221888058">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.
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