Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
12/2003
12/04/2003US20030221840 Method of expanding a sand screen
12/04/2003US20030221838 Well stimulation tool and method of using same
12/04/2003US20030221830 Re-enterable gravel pack system with inflate packer
12/04/2003US20030221823 Wellhead isolation tool
12/04/2003US20030221519 Methods and apparatus for connecting tubulars while drilling
12/03/2003CN2589665Y Abrasion-proof sealed packing
12/03/2003CN2589662Y Under balance drilling mine pore flow guiding anti-overflow pipe
12/02/2003US6655463 Method for drilling and completing oil wells with small intermediate diameters
12/02/2003US6655461 Straddle packer tool and method for well treating having valving and fluid bypass system
12/02/2003US6655457 Method for use in sampling and/or measuring in reservoir fluid
12/02/2003US6655455 Flow completion system
12/02/2003CA2357446C A device for introducing a high pressure fluid into well head components
12/02/2003CA2198163C High pressure casing patch
11/2003
11/29/2003WO2003102364A1 Method of expanding a sand screen
11/27/2003WO2003097994A1 System for treating an underground formation
11/27/2003WO2003097993A2 Packer
11/27/2003WO2003062584A3 Method of landing items at a well location
11/27/2003US20030217866 System and method for treating drilling mud in oil and gas well drilling applications
11/27/2003US20030217849 Dynamic mudcap drilling and well control system
11/27/2003US20030217847 Hardening hydraulic cements in oil and gas wells; forming annular sheath; pumping slurry; hardening
11/27/2003US20030217844 Deformable member
11/26/2003CN2588047Y Dismountable cementing head
11/26/2003CN2588046Y Compressing type small diameter packer
11/26/2003CN2588045Y Wedging in type packer
11/26/2003CN2588044Y Packer for top of tail pipe
11/26/2003CN2588043Y Rubber gate for oil pumping
11/25/2003US6651750 Shear release packer and method of transferring the load path therein
11/25/2003US6651749 Well tool actuators and method
11/25/2003US6651746 High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method
11/25/2003US6651743 Slim hole stage cementer and method
11/25/2003CA2155084C Wellhead leak containment device
11/20/2003WO2003095874A2 Metal end cap seal with annular protrusions
11/20/2003WO2003095873A2 Metal end cap seal with pressure trap
11/20/2003WO2003095872A2 Metal end cap seal with o-rings
11/20/2003US20030213601 Downhole seal assembly and method for use of same
11/19/2003EP1362978A1 System for treating an underground formation
11/19/2003EP1362158A1 Method and apparatus for operations in underground/subsea oil and gas wells
11/19/2003CN2586813Y Oil field thermal production well pipe outer packer
11/19/2003CN1456785A Selective multi-stage inner pipe cementing process and cemented tubular column there from
11/19/2003CN1128291C Oil well wall and production thereof
11/18/2003US6648335 Metal-to-metal seal assembly for oil and gas production apparatus
11/18/2003US6648081 Subsea wellbore drilling system for reducing bottom hole pressure
11/18/2003US6648075 Method and apparatus for expandable liner hanger with bypass
11/18/2003US6648069 Well reference apparatus and method
11/13/2003WO2003093638A2 Tubing anchor
11/13/2003WO2003093637A2 Tubing anchor
11/13/2003WO2003064803A3 A riser connector
11/13/2003US20030209862 Metal end cap seal with annular protrusions
11/13/2003US20030209861 Metal end cap seal with pressure trap
11/13/2003US20030209857 Metal end cap seal with o-ring
11/12/2003EP1361334A1 Method and apparatus for maintaining a fluid column in a wellbore annulus
11/12/2003EP1360392A1 Safety valve for oil wells
11/12/2003EP1127211B1 Universal cementing plug
11/12/2003EP1015184B1 Granular particle gripping surface
11/12/2003CN2585970Y Underbalance bottom blowout preventer
11/12/2003CN2585969Y Scraping and blowout preventing box of sucker, polish rod
11/11/2003US6644423 Wireline system for multiple direct push tool usage
11/11/2003US6644413 Method of landing items at a well location
11/11/2003US6644411 Tubing hanger with flapper valve
11/11/2003US6644410 Modular subsea control system
11/11/2003US6644401 Slip type casing hanger with integral high pressure isolation plate
11/08/2003CA2428008A1 Method and apparatus for maintaining a fluid column in a wellbore annulus
11/06/2003WO2003024634A3 Fluid seal and method of using same
11/06/2003US20030208155 Vestibular irrigator test system (vits)
11/06/2003US20030205388 Tubing anchor
11/06/2003US20030205387 Tubing anchor
11/06/2003US20030205385 Connections for wellhead equipment
11/06/2003US20030205373 Screw-driven wellhead isolation tool
11/06/2003US20030205083 Monitoring of downhole parameters and tools utilizing fiber optics
11/06/2003DE20314196U1 Method for drilling venting ducts for underground mines has a sealed adaptor fitted to the top of the venting duct with separate outlets for gas and debris
11/05/2003EP1038087B1 Assembly and process for drilling and completing multiple wells
11/05/2003CN2584814Y Cylinder device for constant-pressure tank
11/05/2003CN2584813Y High-pressure resistance packer with long-service life
11/05/2003CN2584812Y Small-diameter compression packer
11/05/2003CN2584811Y Portable quick safety blowout preventer
11/05/2003CN2584810Y Well head well shut-in apparatus with pressure
11/05/2003CN2584809Y Oil well head cleaning sealing apparatus
11/05/2003CN2584803Y Spiral-flow slip casting bend joint
11/05/2003CN1126857C Sealer for mouth of pumping well
11/04/2003US6640903 Forming a wellbore casing while simultaneously drilling a wellbore
11/04/2003US6640902 Nested stack-down casing hanger system for subsea wellheads
11/04/2003US6640895 Expandable tubing joint and through-tubing multilateral completion method
11/04/2003US6640893 Wellbore packer
11/04/2003US6640892 Tubing string rotator
11/04/2003CA2297600C Blowout preventer protector and method of using same
11/04/2003CA2147562C Single drilling guide base for subsea oil wells
11/04/2003CA2093600C Borehole stressed packer inflation system
10/2003
10/30/2003WO2003006780A3 Device and method for injecting fluids into a wellbore
10/30/2003WO2002097008A3 Horizontal spool tree assembly
10/30/2003US20030202418 Cementing apparatus and methods of using the same
10/30/2003US20030201102 Liner top test packer
10/29/2003EP1357403A2 A method of generating electric power in a wellbore
10/29/2003EP1357402A2 A light actuated system for use in a wellbore
10/29/2003EP1357401A2 A system for controlling a downhole device in a wellbore
10/29/2003EP1356188A1 Fluid mixing system
10/29/2003EP1356010A1 Thinners for invert emulsions
10/29/2003EP1097287B1 Floating spar for supporting production risers
10/29/2003CN2583354Y Cable suction type gray cylinder
10/29/2003CN2583353Y Cable explosion type integrated gray column
10/29/2003CN2583352Y Side door sealing device for ram blow-out preventer
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