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)
08/2012
08/08/2012EP2484861A2 Shear blade geometry and method
08/08/2012EP2484860A2 Shear blade geometry and method
08/08/2012EP2484858A1 Riser bending relief joint
08/08/2012EP2484857A2 Method and apparatus for performing wireline logging operations in an under-balanced well
08/08/2012EP2483520A1 Through tubing bridge plug and installation method for same
08/08/2012EP2483519A2 Improved flushing system
08/08/2012EP2483518A1 Compression assembly and method for actuating downhole packing elements
08/08/2012EP2483517A1 Anchor assembly and method for anchoring a downhole tool
08/08/2012EP2483514A2 Well containment system
08/08/2012EP2483513A1 Pressure control device with remote orientation relative to a rig
08/08/2012CN202372072U Igniter for oil-gas well cable bridge plug setting tool
08/08/2012CN202370500U Single-well wellhead yield accounting device
08/08/2012CN202370495U Sand blasting perforation annular mechanical packing multilayer fracturing tool tubular column for oil-gas well
08/08/2012CN202370475U Compensatory sealing bushing
08/08/2012CN202370474U Test device for simulating displacement efficiency of well-cementing cement slurry
08/08/2012CN202370473U Full-size ball seat
08/08/2012CN202370472U Assembling and dismantling lifting device of blowout prevention pipe
08/08/2012CN202370471U Hydraulic jack type blowout control device
08/08/2012CN202370470U Wellhead anti-falling device for tester
08/08/2012CN202370469U Sucker rod sealer
08/08/2012CN202370468U Embedded rotary sleeve type plug for oil extraction wellhead
08/08/2012CN202370467U Novel polished rod sealer
08/08/2012CN102628347A Drilling liner cementing rubber plug composite colliding device
08/08/2012CN102628346A Self-filling type flow velocity-regulable float collar-float shoe device
08/08/2012CN102628345A Sealing method of high sealing quasi-horizontal drilling hole
08/08/2012CN102628344A Shear blade geometry and method
08/08/2012CN102628343A Riser bending relief joint
08/08/2012CN102628342A Tail tube cementing drill pipe rubber plug placing device
08/08/2012CN102626803A Shear blade geometry and method
08/08/2012CN101769137B Anti-blowout leakage-preventing device of Christmas tree big four joint
08/07/2012US8236100 Method of characterizing the self-healing properties of a set cement based material in contact with hydrocarbons
08/07/2012US8235396 Annular seal
08/07/2012US8235123 Separating device
08/07/2012US8235116 Well remediation using surfaced mixed epoxy
08/07/2012US8235115 Cement slurry with low water-to-cement ratio
08/07/2012US8235110 Preconditioning an oilfield reservoir
08/07/2012CA2666240C Hydraulic well packer
08/07/2012CA2544405C System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud
08/07/2012CA2508559C Wellhead shelter
08/07/2012CA2499007C Bottom plug for forming a mono diameter wellbore casing
08/07/2012CA2482137C Well packer having an energized sealing element and associated method
08/04/2012CA2731037A1 Coiled tubing deployed esp
08/02/2012WO2012103474A2 Improving diversion by combining dissolvable and degradable particles and fibers
08/02/2012WO2012103460A1 Running tool
08/02/2012WO2012103449A1 Tool for removing wellhead components
08/02/2012WO2012103243A2 Setting tool
08/02/2012WO2012100915A1 Device for transferring a hydraulic working pressure in a pressure fluid for actuating hydraulic units of deep-sea systems
08/02/2012WO2012065123A3 Remote operation of cementing head
08/02/2012US20120193874 Blowout preventer seal and method of using same
08/02/2012US20120193556 Shear Blade Geometry and Method
08/02/2012US20120193106 Recovering heated fluid using well equipment
08/02/2012US20120193097 Methods and Compositions Comprising Kiln Dust and Metakaolin
08/02/2012US20120193096 Oil Well Plug Apparatus and Method
08/02/2012US20120193088 Expandable Compliant Anchor/Seal
08/02/2012US20120193087 Shear Blade Geometry and Method
08/02/2012CA2825773A1 Setting tool
08/02/2012CA2825219A1 Improving diversion by combining dissolvable and degradable particles and fibers
08/01/2012EP2481883A2 Oil-based insulating packer fluid
08/01/2012EP2481882A1 A subsurface safety valve including safe additive injection
08/01/2012EP2480758A2 Method and apparatus for determining locations of multiple casings within a wellbore conductor
08/01/2012EP2480751A2 Use of foam shaper memory polymer to transport acid or other wellbore treatments
08/01/2012EP2271819B1 A tool for shutting off openings or leaks in a well bore
08/01/2012EP2265793B1 Subsea test apparatus, assembly and method
08/01/2012CN202362880U Intelligent anti-theft alarm device for crude oil in oil extraction wellhead
08/01/2012CN202360059U High temperature and high pressure dynamic and static plugging simulation testing device
08/01/2012CN202360058U Fishable oil pipe plug
08/01/2012CN202360057U Leather cup packer
08/01/2012CN202360056U Left variable-diameter flashboard
08/01/2012CN202360048U Tensioner for blowout preventer (BOP) of self-elevating drilling platform
08/01/2012CN202360038U Integral type blowout prevention straight pipe
08/01/2012CN102619493A Method and combination device for controlling profile and blocking water for thickened oil horizontal well of screen pipe well completion
08/01/2012CN102619488A Hole sealing method for gas drainage drill
08/01/2012CN102619487A Vibration-preventing high-temperature-resisting underground moving sealing device
08/01/2012CN102618228A Plugging agent for clastic rock oil reservoir horizontal well, preparation method and water plugging method
07/2012
07/31/2012US8231947 Oilfield elements having controlled solubility and methods of use
07/31/2012US8230936 Methods of forming acid particle based packers for wellbores
07/31/2012US8230933 Top drive casing system
07/31/2012US8230931 Lifting device and method for lifting a bonnet
07/31/2012US8230930 Mounts for blowout preventer bonnets and methods of use
07/31/2012US8230926 Multiple stage cementing tool with expandable sealing element
07/31/2012US8230913 Expandable device for use in a well bore
07/26/2012WO2012099841A2 Method for capping a well in the event of subsea blowout preventer failure
07/26/2012WO2012097415A1 Borehole plug inflation control
07/26/2012WO2012067786A3 Plug and method of unplugging a seat
07/26/2012WO2012001342A3 Sealing method and apparatus
07/26/2012US20120187634 Metal sealing adjustable casing sub
07/26/2012US20120187632 Packer with non-extrusion ring
07/26/2012US20120186830 Packer assembly
07/26/2012US20120186820 Modular Backup Fluid Supply System
07/26/2012US20120186815 Method and Composition to Prevent Fluid Mixing in Pipe
07/26/2012US20120186814 System And Method For Preserving A Hydraulic Packer
07/26/2012US20120186813 Method for blocking outflow of petroleum or the like due to damage to subsea petroleum well stell pipe or the like
07/26/2012US20120186812 Modified cement composition, preparation and application thereof
07/26/2012US20120186809 Downhole 4D Pressure Measurement Apparatus And Method For Permeability Characterization
07/26/2012US20120186802 Well Treatment Device, Method, and System
07/26/2012US20120186801 Swellable Downhole Packer
07/26/2012DE102011009276A1 Vorrichtung zum Übertragen eines hydraulischen Arbeitsdruckes in einer Druckflüssigkeit zur Druckbetätigung hydraulischer Einrichtungen von Tiefseeanlagen A device for transmitting a hydraulic working pressure in a pressure fluid for pressure actuation of hydraulic devices for deep-water systems
07/26/2012CA2825107A1 Borehole plug inflation control
07/26/2012CA2824883A1 Method for capping a well in the event of subsea blowout preventer failure
07/26/2012CA2824383A1 Downhole tools
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