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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US397614812 Sep 197524 Aug 1976The Offshore CompanyMethod and apparatus for determining onboard a heaving vessel the flow rate of drilling fluid flowing out of a wellhole and into a telescoping marine riser connecting between the wellhouse and the vessel
US40461917 Jul 19756 Sep 1977Exxon Production Research CompanySubsea hydraulic choke
US409188111 Apr 197730 May 1978Exxon Production Research CompanyArtificial lift system for marine drilling riser
US409958311 Apr 197711 Jul 1978Exxon Production Research CompanyGas lift system for marine drilling riser
US41358416 Feb 197823 Jan 1979Regan Offshore International, Inc.Mud flow heave compensator
US42102084 Dec 19781 Jul 1980Sedco, Inc.Subsea choke and riser pressure equalization system
US428293920 Jun 197911 Aug 1981Exxon Production Research CompanyMethod and apparatus for compensating well control instrumentation for the effects of vessel heave
US429177225 Mar 198029 Sep 1981Standard Oil Company (Indiana)Drilling fluid bypass for marine riser
US444023928 Sep 19813 Apr 1984Exxon Production Research Co.Method and apparatus for controlling the flow of drilling fluid in a wellbore
US587584810 Apr 19972 Mar 1999Reading & Bates Development Co.Weight management system and method for marine drilling riser
US610267325 Mar 199915 Aug 2000Hydril CompanySubsea mud pump with reduced pulsation
US610568926 May 199822 Aug 2000McGuire Fishing & Rental Tools, Inc.Mud separator monitoring system
US621679924 Sep 199817 Apr 2001Shell Offshore Inc.Subsea pumping system and method for deepwater drilling
US623082425 Mar 199915 May 2001Hydril CompanyRotating subsea diverter
US626398124 Sep 199824 Jul 2001Shell Offshore Inc.Deepwater drill string shut-off valve system and method for controlling mud circulation
US627645524 Sep 199821 Aug 2001Shell Offshore Inc.Subsea gas separation system and method for offshore drilling
US632515925 Mar 19994 Dec 2001Hydril CompanyOffshore drilling system
US632810727 Jul 200011 Dec 2001ExxonMobil Upstream Research CompanyMethod for installing a well casing into a subsea well being drilled with a dual density drilling system
US637862816 Jun 200030 Apr 2002Monitoring system for drilling operations
US64018238 Feb 200111 Jun 2002Shell Oil CompanyDeepwater drill string shut-off
US640894814 Jul 199925 Jun 2002Deep Vision LLCTubing handling for subsea oilfield tubing operations
US641587714 Jul 19999 Jul 2002Deep Vision LLCSubsea wellbore drilling system for reducing bottom hole pressure
US64709751 Mar 200029 Oct 2002Weatherford/Lamb, Inc.Internal riser rotating control head
US65056916 Aug 200114 Jan 2003Hydril CompanySubsea mud pump and control system
US65304375 Jun 200111 Mar 2003Maurer Technology IncorporatedMulti-gradient drilling method and system
US657187320 Feb 20023 Jun 2003ExxonMobil Upstream Research CompanyMethod for controlling bottom-hole pressure during dual-gradient drilling
US657863727 Jul 200017 Jun 2003ExxonMobil Upstream Research CompanyMethod and system for storing gas for use in offshore drilling and production operations
US66480818 Mar 200218 Nov 2003Deep Vision LLPSubsea wellbore drilling system for reducing bottom hole pressure
US666288524 Oct 200116 Dec 2003Precision Drilling Technology Services Group, Inc.Method and apparatus for providing a stream of pressurized substantially inert gas
US666894331 May 200030 Dec 2003ExxonMobil Upstream Research CompanyMethod and apparatus for controlling pressure and detecting well control problems during drilling of an offshore well using a gas-lifted riser
US674585719 Sep 20028 Jun 2004National Oilwell Norway ASMethod of drilling sub-sea oil and gas production wells
US680237921 Feb 200212 Oct 2004ExxonMobil Upstream Research CompanyLiquid lift method for drilling risers
US685453217 Nov 200315 Feb 2005Deep Vision LLCSubsea wellbore drilling system for reducing bottom hole pressure
US691309223 Jul 20015 Jul 2005Weatherford/Lamb, Inc.Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling
US695769823 Jun 200325 Oct 2005Baker Hughes IncorporatedDownhole activatable annular seal assembly
US69815612 Sep 20033 Jan 2006Baker Hughes IncorporatedDownhole cutting mill
US709697525 Mar 200429 Aug 2006Baker Hughes IncorporatedModular design for downhole ECD-management devices and related methods
US711458120 Feb 20043 Oct 2006Deep Vision LLCActive controlled bottomhole pressure system & method
US715966928 Oct 20029 Jan 2007Internal riser rotating control head
US71749759 Sep 200413 Feb 2007Baker hughes IncorporatedControl systems and methods for active controlled bottomhole pressure systems
US718570518 Mar 20036 Mar 2007Baker Hughes IncorporatedSystem and method for recovering return fluid from subsea wellbores
US723762319 Sep 20033 Jul 2007Weatherford/Lamb, Inc.Method for pressurized mud cap and reverse circulation drilling from a floating drilling rig using a sealed marine riser
US725817121 Nov 200521 Aug 2007Weatherford/Lamb, Inc.Internal riser rotating control head
US726116418 Jan 200528 Aug 2007Baker Hughes IncorporatedFloatable drill cuttings bag and method and system for use in cuttings disposal
US72701859 Jul 200218 Sep 2007Baker Hughes IncorporatedDrilling system and method for controlling equivalent circulating density during drilling of wellbores
US73538878 Sep 20058 Apr 2008Baker Hughes IncorporatedControl systems and methods for active controlled bottomhole pressure systems
US744845423 Mar 200411 Nov 2008Weatherford/Lamb, Inc.Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling
US748783723 Nov 200410 Feb 2009Weatherford/Lamb, Inc.Riser rotating control device
US751331012 Mar 20047 Apr 2009Ocean Riser Systems ASMethod and arrangement for performing drilling operations
US767732924 Nov 200416 Mar 2010AGR Subsea ASMethod and device for controlling drilling fluid pressure
US780620316 Jun 20065 Oct 2010Baker Hughes IncorporatedActive controlled bottomhole pressure system and method with continuous circulation system
US78369462 Mar 200623 Nov 2010Weatherford/Lamb, Inc.Rotating control head radial seal protection and leak detection systems
US792659331 Mar 200819 Apr 2011Weatherford/Lamb, Inc.Rotating control device docking station
US793454522 Oct 20103 May 2011Weatherford/Lamb, Inc.Rotating control head leak detection systems
US79381902 Nov 200710 May 2011AGR Subsea, Inc.Anchored riserless mud return systems
US79504637 Apr 200931 May 2011Ocean Riser Systems ASMethod and arrangement for removing soils, particles or fluids from the seabed or from great sea depths
US797255516 Oct 20085 Jul 2011ExxonMobil Upstream Research CompanyMethod for fabricating compressible objects for a variable density drilling mud
US799734519 Oct 200716 Aug 2011Weatherford/Lamb, Inc.Universal marine diverter converter
US801145021 Jul 20066 Sep 2011Baker Hughes IncorporatedActive bottomhole pressure control with liner drilling and completion systems
US807626916 Oct 200813 Dec 2011ExxonMobil Upstream Research CompanyCompressible objects combined with a drilling fluid to form a variable density drilling mud
US808871616 Oct 20083 Jan 2012ExxonMobil Upstream Research CompanyCompressible objects having a predetermined internal pressure combined with a drilling fluid to form a variable density drilling mud
US808871716 Oct 20083 Jan 2012ExxonMobil Upstream Research CompanyCompressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud
US811329125 Mar 201114 Feb 2012Weatherford/Lamb, Inc.Leak detection method for a rotating control head bearing assembly and its latch assembly using a comparator
USRE4319910 Sep 200221 Feb 2012Ocean Rider Systems ASArrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells