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)
04/2014
04/22/2014US8701787 Metal expandable element back-up ring for high pressure/high temperature packer
04/22/2014US8701786 Positionless expanding lock ring for subsea annulus seals for lockdown
04/22/2014US8701766 Apparatus and methods for completing subterranean wells
04/22/2014US8701756 Internal lockdown snubbing plug
04/22/2014CA2789289C Oil well drilling fluids, oil well cement composition and slurry of weighting material
04/22/2014CA2771629C Methods and apparatus for releasing a chemical into a well bore upon command
04/22/2014CA2752864C Sealing body for well perforation operations
04/22/2014CA2712069C Apparatus, assembly and process for injecting fluid into a subterranean well
04/17/2014WO2014058814A1 Well system with an independently retrievable tree
04/17/2014WO2014058626A1 Flow restrictor for a service tool
04/17/2014WO2014058414A1 Downhole repeat micro-zonal isolation assembly and method
04/17/2014WO2014058338A1 Method for cementing a well
04/17/2014WO2014056045A1 Hydrocarbon conduit connection
04/17/2014WO2014056044A1 Improved diverter valve
04/17/2014WO2013116234A3 Blowout preventer and method of using same
04/17/2014WO2012121934A3 Tubing hanger-production tubing suspension arrangement
04/17/2014US20140102728 Controlled Swell-Rate Swellable Packer and Method
04/17/2014US20140102727 Packer cup for sealing in multiple wellbore sizes eccentrically
04/17/2014US20140102726 Controlled Swell-Rate Swellable Packer and Method
04/17/2014US20140102725 Seal assembly
04/17/2014US20140102724 Secondary barrier for use in conjunction with an isolation device in a horizontal wellbore
04/17/2014US20140102723 Telescoping latching mechanism for casing cementing plug
04/17/2014US20140102722 Downhole System and Method for Facilitating Remedial Work
04/17/2014US20140102720 Permeability Modification
04/17/2014US20140102717 Method for launching replacement balls
04/17/2014US20140102713 Communications systems and methods for subsea processors
04/17/2014US20140102712 Subsea processor for underwater drilling operations
04/17/2014US20140102711 Subsea arrangement
04/17/2014US20140102704 Cement Compositions Containing Metphosphate and Methods of Use
04/17/2014US20140102703 Pressure Actuated Ported Sub for Subterranean Cement Completions
04/17/2014US20140102691 Method of drilling and operating an oil or gas well, a method of preventing or minimizing contamination to the soil about an oil or gas well, using a kit to install, an impervious and reusable liner and apparatus therefor
04/17/2014US20140102690 Pipe in Pipe Piston Thrust System
04/16/2014EP2719857A2 Packer cup for sealing in multiple wellbore sizes eccentrically
04/16/2014EP2719856A2 Seal assembly for subsurface safety valve
04/16/2014EP2718538A2 Liner top packer for liner drilling
04/16/2014EP2718537A1 Inner string cementing tool
04/16/2014EP2718536A1 Method for strengthening a wellbore of a well
04/16/2014EP2718535A1 Improved blowout preventer
04/16/2014EP2718533A2 Tubular assembly and method of deploying a downhole device using a tubular assembly
04/16/2014CN203552292U Ram blowout preventer manual shut-in and unlocking turn counting device
04/16/2014CN203547697U Large-delivery-capacity sand prevention and compression sealing integrated fracturing tool
04/16/2014CN203547685U Mechanical sand-preventing and water-blocking integral pipe column
04/16/2014CN203547684U Auxiliary tool for replacing packing and lifting rope
04/16/2014CN203547655U Well cementing split rubber plug device of composite casing pipe
04/16/2014CN203547654U Mechanical double-stage sealing cement umbrella
04/16/2014CN203547653U Mechanical drilling-free grading hoop
04/16/2014CN203547652U Float collar and rubber plug assembly for drilling liner cementing
04/16/2014CN203547651U Multistage cementing tool
04/16/2014CN203547650U Multilateral well cementation large drift diameter packer
04/16/2014CN203547649U Sand-proof clamping-proof cracking-proof packer
04/16/2014CN203547648U Double-hydraulic-cylinder packer device
04/16/2014CN203547647U Electric spray-resistant packer
04/16/2014CN203547646U Novel blowout prevention box
04/16/2014CN203547645U Blowout-control and wax-scrapping device for oil well
04/16/2014CN203547644U Intelligent hand wheel
04/16/2014CN203547643U Environment-friendly wellhead device
04/16/2014CN203547642U Rotary reducing oil pipe clamping blowout preventer
04/16/2014CN203547641U Coiled tubing hanging and sealing device
04/16/2014CN203547640U Novel blowout preventer
04/16/2014CN203547639U Polish rod sealing device pressing cap fixing device
04/16/2014CN203547638U High-temperature tubing head metal sealing device
04/16/2014CN203547637U Oil pipe head jackscrew protective device
04/16/2014CN203547636U Drill rod sealing device, mining dust catching device and mining drilling device
04/16/2014CN203547635U Integrated under-pressure operation device for oil well rods/tubes
04/16/2014CN203547634U Follow-up sealing device of polished rod
04/16/2014CN203547633U Movable cover plate used for reversed wellhead of wellhead operating table
04/16/2014CN203547632U Independent under-pressure operating device
04/16/2014CN203547616U Expanding tail pipe hanger
04/16/2014CN203547561U Completion string for oil and gas well
04/16/2014CN103732851A Annular barrier with compensation device
04/16/2014CN103732850A Annular barrier with pressure amplification
04/16/2014CN103726819A Method of low-temperature gas-assisted coalbed methane fracturing technology
04/16/2014CN103726813A Well completion structure and method for building packer in packing ring outside oil gas well filter tubing string
04/16/2014CN103726804A Hydraulic packer and mounting method thereof
04/16/2014CN103725275A Chemical sealing rubber plug in snubbing operation string as well as preparation method and application of chemical sealing rubber plug
04/16/2014CN103725274A High-pressure-resistant controllable degradation chemical molding fluid bridge plug as well as preparation method and application thereof
04/16/2014CN102618228B Plugging agent for clastic rock oil reservoir horizontal well, preparation method and water plugging method
04/16/2014CN102561983B Anti-splash mechanism of oil pipes
04/16/2014CN102337860B Packer
04/16/2014CN101787865B Midway setting-proof permanent packer
04/15/2014US8697609 Methods of using fluid loss additives comprising micro gels
04/15/2014US8696963 Functionally graded swellable packers
04/15/2014US8695717 Inflatable packer assembly
04/15/2014US8695712 Wellhead tree pressure compensating device
04/15/2014US8695711 Subsea well containment and intervention apparatus
04/15/2014US8695705 Composite formulations and methods of making and using same
04/15/2014US8695697 Downhole tool having setting valve for packing element
04/15/2014US8695695 Downhole tool with pumpable section
04/15/2014US8695691 Subsea connection apparatus for a surface blowout preventer stack
04/15/2014CA2829725A1 Method for launching replacement balls
04/15/2014CA2829591A1 Seal assembly
04/15/2014CA2774100C Use of foam shaper memory polymer to transport acid or other wellbore treatments
04/15/2014CA2771064C Method and apparatus for moving a high pressure fluid aperture in a well bore servicing tool
04/15/2014CA2725717C Apparatus and methods for drilling a wellbore using casing
04/15/2014CA2722327C Quick-change wear sleeve for a high-pressure fluid conduit and method of refubishing same
04/12/2014CA2829556A1 Packer cup for sealing in multiple wellbore sizes eccentrically
04/10/2014WO2014055891A1 System for increasing swelling efficiency
04/10/2014WO2014055818A1 Packer assembly with enhanced sealing layer shape
04/10/2014WO2014055763A1 Detection of well fluid contamination in sealed fluids of well pump assemblies
04/10/2014WO2014055471A1 Pressure balanced connector termination
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