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Class Information
Number: 405/224.4
Name: Hydraulic and earth engineering > Marine structure or fabrication thereof > With anchoring of structure to marine floor > By riser pipe > Having tensioner
Description: Subject matter comprising means to apply tensile force to the conduit in order to control its geometric configuration.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8657536 Tensioning a riser Feb. 25, 2014
8590626 Offshore well intervention lift frame and method Nov. 26, 2013
8579034 Riser tensioner system Nov. 12, 2013
8540460 System for supplemental tensioning for enhanced platform design and related methods Sep. 24, 2013
8496409 Marine riser tensioner Jul. 30, 2013
8474538 Hydraulically actuated safety lock ring Jul. 2, 2013
8382399 Heave compensated snubbing system and method Feb. 26, 2013
8215872 Ram style tensioner with fixed conductor and floating frame Jul. 10, 2012
8162062 Offshore well intervention lift frame and method Apr. 24, 2012
8157013 Tensioner system with recoil controls Apr. 17, 2012
8123438 Ram style tensioner Feb. 28, 2012
8083440 Riser tensioner restraint device Dec. 27, 2011
8021081 Pull-style tensioner system for a top-tensioned riser Sep. 20, 2011
8011858 Ram style tensioner with fixed conductor and floating frame Sep. 6, 2011
7988385 Ram style tensioner with fixed conductor and floating frame Aug. 2, 2011
7980786 Dual pressure tensioner system Jul. 19, 2011
7980787 Dual pressure tensioner method Jul. 19, 2011
7976247 Dual pressure cylinder Jul. 12, 2011
7886828 Floating vessel for supporting top tension drilling and production risers Feb. 15, 2011
7748464 Subsea well communications apparatus and method using variable tension large offset risers Jul. 6, 2010
7712539 Riser for connection between a vessel and a point at the seabed May. 11, 2010
7708498 Soft stop for maximum riser tensioner stroke May. 4, 2010
7658228 High pressure system Feb. 9, 2010
7654327 Tensioner assembly Feb. 2, 2010
7632044 Ram style tensioner with fixed conductor and floating frame Dec. 15, 2009
7628206 Dry tree subsea well communications apparatus using variable tension large offset risers Dec. 8, 2009
7591316 Production system Sep. 22, 2009
7588393 Method for supporting top tension drilling and production risers on a floating vessel Sep. 15, 2009
7520330 System and method for limiting vortex-induced vibrations on an offshore production riser Apr. 21, 2009
7520331 Dry tree subsea well communications methods using variable tension large offset risers Apr. 21, 2009
7438505 Heave compensated snubbing system and method Oct. 21, 2008
7416025 Subsea well communications apparatus and method using variable tension large offset risers Aug. 26, 2008
7389818 Method and device by a displacement tool Jun. 24, 2008
7373985 Two-part telescopic tensioner for risers at a floating installation for oil and gas production May. 20, 2008
7334967 Method and arrangement by a workover riser connection Feb. 26, 2008
7329070 Ram-type tensioner assembly with accumulators Feb. 12, 2008
7328747 Integrated buoyancy joint Feb. 12, 2008
7306404 Device and a method for well intervention Dec. 11, 2007
7231981 Inline compensator for a floating drill rig Jun. 19, 2007
7217067 Riser keel joint assembly May. 15, 2007
7210531 Protective element for a riser segment May. 1, 2007
7191836 Dry tree subsea well communications apparatus and method using variable tension large offset risers Mar. 20, 2007
7156583 Compensating suspension element configuration Jan. 2, 2007
7128159 System and method for limiting vortex-induced vibrations on an offshore production riser Oct. 31, 2006
7112011 Hydro-pneumatic tensioner with stiffness altering secondary accumulator Sep. 26, 2006
7104330 Marine riser tower Sep. 12, 2006
7100694 Marine riser tower Sep. 5, 2006
7096958 Compliant buoyancy can guide Aug. 29, 2006
7080689 Instrumentation assembly for an offshore riser Jul. 25, 2006
7073593 Method of drilling and operating a subsea well Jul. 11, 2006

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