| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 05/27/2004 | US20040099420 Subsea connection apparatus for a surface blowout preventer stack |
| 05/26/2004 | CN2617919Y Expandable packer glue drum |
| 05/26/2004 | CN2617918Y Polish rod aligning blowout preventer of pumping well |
| 05/26/2004 | CN2617917Y Self-aligning blowout preventing case of pumping well |
| 05/26/2004 | CN2617916Y Separated well anti-theft houses |
| 05/26/2004 | CN1500185A Well jet device |
| 05/25/2004 | US6741675 Method and apparatus for generating an audible tone in DSL environment |
| 05/25/2004 | US6739570 Valve element |
| 05/25/2004 | US6739397 Continuous circulation drilling method |
| 05/25/2004 | US6739392 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/25/2004 | US6739391 Surface deployed cement separation plug |
| 05/25/2004 | US6739390 Articulated seal |
| 05/25/2004 | CA2264336C Expanding mandrel inflatable packer |
| 05/21/2004 | WO2004042188A2 Down hole induction heating tool and method of operating and manufacturing same |
| 05/21/2004 | WO2004042186A1 High-pressure packer with endurance |
| 05/21/2004 | WO2004041455A2 Vacuum assisted seal engagement for rov deployed equipment |
| 05/21/2004 | WO2004029487A9 Metal seal with corrosion resistant alloy overlay |
| 05/21/2004 | CA2504877A1 Down hole induction and resistive heating tool and method of operating same |
| 05/20/2004 | US20040094311 Well operations system |
| 05/20/2004 | US20040094305 Intervention module for a well |
| 05/20/2004 | US20040094299 Well treating process and system |
| 05/19/2004 | EP1125344B1 Non-orientated electrical connector |
| 05/19/2004 | CN2616673Y Step cementing device |
| 05/19/2004 | CN2616672Y Oil-gas well cementation apparatus |
| 05/19/2004 | CN2616671Y Large path flushing packer |
| 05/19/2004 | CN2616670Y Water-blocking packer |
| 05/19/2004 | CN2616669Y Double-sealing flushing packer |
| 05/19/2004 | CN2616668Y Throw-dreg-free waterflooding packer |
| 05/19/2004 | CN2616667Y Screw-locking packer |
| 05/19/2004 | CN2616666Y 斜井封隔器 Inclined packer |
| 05/19/2004 | CN2616665Y Drilling-insertion packer |
| 05/19/2004 | CN2616664Y Adjustable high-pressure blowout-preventing polish rod packing box |
| 05/19/2004 | CN2616663Y Packing taking-out device |
| 05/18/2004 | US6736212 Drilling alignment system |
| 05/18/2004 | US6736208 Wellhead production pumping tree with access port |
| 05/18/2004 | CA2339417C Well tubing rotator |
| 05/18/2004 | CA2294483C A method of injecting drilling waste into a well while drilling |
| 05/18/2004 | CA2265223C Wellbore annulus packer apparatus and method |
| 05/18/2004 | CA2086161C Inflatable borehole plug assemblies |
| 05/13/2004 | WO2004040098A1 Telescoping centralizers for expandable tubulars |
| 05/13/2004 | WO2004040094A1 Re-entry in multilateral wellsbores |
| 05/13/2004 | WO2003029603A8 Wellbore system for simultaneous drilling and production |
| 05/13/2004 | US20040092404 Sleeve with premachined aperture; coverings with release agent; insertion sleeve in well bore |
| 05/13/2004 | US20040090297 Arrangement and method for installing a subsea transformer |
| 05/13/2004 | US20040089475 Non-rotating sensor assembly for measurement-while-drilling applications |
| 05/13/2004 | US20040089444 Insulated casing and tubing hangers |
| 05/12/2004 | CN2615329Y Pumping well head apparatus |
| 05/12/2004 | CN2615328Y Well head antitheft packing |
| 05/11/2004 | US6732804 Dynamic mudcap drilling and well control system |
| 05/11/2004 | US6732802 Isolation bypass joint system and completion method for a multilateral well |
| 05/11/2004 | US6732797 Method of forming a cementitious plug in a well |
| 05/11/2004 | CA2244131C Inflatable packer |
| 05/06/2004 | WO2004038172A1 Cement flow control tool |
| 05/06/2004 | WO2004038167A1 Well packer for a pipe string and a method of leading a line past the well packer |
| 05/06/2004 | WO2004031529A3 Cementing through a side pocket mandrel |
| 05/06/2004 | US20040087448 Packer fluid |
| 05/06/2004 | US20040084644 Method of sealing pressure within a blowout preventer and a blowout preventer |
| 05/06/2004 | US20040084442 Downhole electromagnetic heating tool and method of using same |
| 05/06/2004 | US20040084220 Active/passive seal rotating control head |
| 05/06/2004 | US20040084214 System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
| 05/06/2004 | US20040084213 System for drilling oil and gas wells using oversized drill string to achieve increased annular return velocities |
| 05/06/2004 | US20040084190 Multi-cycle dump valve |
| 05/06/2004 | US20040084184 External casing packer for use with slotted liners |
| 05/06/2004 | EP1415104A1 Valve system and method |
| 05/05/2004 | CN2614264Y Ultra deep well float collar and float shoe |
| 05/05/2004 | CN2614263Y Anti-theft well mouth cap |
| 05/05/2004 | CN2614262Y Multifunctional well mouth polished rod sealing equipment |
| 05/05/2004 | CN1493769A Multifunction oil pumping well polish rod |
| 05/05/2004 | CN1493650A High cement paste solidifying agent |
| 05/04/2004 | US6729410 Multiple tube structure |
| 05/04/2004 | US6729393 Zero drill completion and production system |
| 05/04/2004 | US6729392 Tubing hanger with ball valve in the annulus bore |
| 05/04/2004 | US6729130 Device in a subsea system for controlling a hydraulic actuator and a subsea system with a hydraulic actuator |
| 04/29/2004 | WO2004035986A1 Annulus pressure control system for subsea wells |
| 04/29/2004 | WO2004035983A2 Open water running tool and lockdown sleeve assembly |
| 04/29/2004 | WO2003033868A8 Single well development system |
| 04/29/2004 | US20040083058 Method for selection of cementing composition |
| 04/29/2004 | US20040079910 Gate valve with flow-through gate |
| 04/29/2004 | US20040079909 Side retainer plate for variable bore ram packer for a ram type blowout preventer |
| 04/29/2004 | US20040079535 Telescoping centralizers for expandable tubulars |
| 04/29/2004 | US20040079534 Expandable tubulars |
| 04/29/2004 | US20040079532 Wellhead systems |
| 04/29/2004 | US20040079529 Apparatus and method for installation of subsea well completion systems |
| 04/29/2004 | US20040079528 Tubing anchor |
| 04/29/2004 | US20040079524 Toroidal choke inductor for wireless communication and control |
| 04/28/2004 | EP1412612A1 Downhole actuation system utilizing electroactive fluids |
| 04/28/2004 | EP1412610A2 Clamping well casings |
| 04/28/2004 | EP0988439B1 Casing annulus remediation system |
| 04/28/2004 | CN2613585Y Inflatable type packer rubber sleeve |
| 04/28/2004 | CA2446984A1 Internal riser rotating control head |
| 04/27/2004 | US6727828 Pressurized system for protecting signal transfer capability at a subsurface location |
| 04/27/2004 | US6727696 Downhole NMR processing |
| 04/27/2004 | US6725951 Erosion resistent drilling head assembly |
| 04/27/2004 | US6725936 Method for drilling a plurality of offshore underwater wells |
| 04/27/2004 | US6725934 Expandable packer isolation system |
| 04/27/2004 | US6725929 Circulation tool for use in gravel packing of wellbores |
| 04/27/2004 | US6725924 System and technique for monitoring and managing the deployment of subsea equipment |
| 04/27/2004 | US6725923 Method and device for exciting transversal oscillations of a pipe string in a borehole |
| 04/27/2004 | US6725919 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/27/2004 | US6725918 Expandable liner and associated methods of regulating fluid flow in a well |