Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
07/2013
07/24/2013CN102031947B Back wash pump negative-pressure oil extraction device
07/23/2013US8492317 Slag compositions and methods of use
07/23/2013US8491013 Cementing swivel and retainer arm assembly and method
07/23/2013US8490979 Method for reducing extrusion of sealing elements
07/23/2013US8490708 Downhole apparatus and method
07/23/2013US8490707 Oilfield apparatus and method comprising swellable elastomers
07/23/2013US8490706 Casing head connector
07/23/2013US8490704 Technique of fracturing with selective stream injection
07/23/2013US8490702 Downhole tool assembly with debris relief, and method for using same
07/23/2013US8490701 Methods of releasing at least one tubing string below a blow-out preventer
07/23/2013US8490695 Method for drilling and fracture treating multiple wellbores
07/23/2013US8490691 Plug
07/23/2013US8490689 Bridge style fractionation plug
07/23/2013US8490688 Methodology for setting of an inflatable packer using solid media
07/23/2013CA2741802C Hole covering and locator
07/23/2013CA2734186C Tubing hanger
07/23/2013CA2685021C Seal for a drill string
07/23/2013CA2537511C Mobile snubbing system
07/18/2013WO2013106260A1 Performing multi-stage well operations
07/18/2013WO2013106228A2 Multiple ramp compression packer
07/18/2013WO2013105866A1 Access fitting for attaching a device within a process pipeline or vessel
07/18/2013WO2013104069A1 Fluid or slurry pulsing casing/liner shoe
07/18/2013WO2013030681A3 Wave-inducing device, casing system and method for cementing a casing in a borehole
07/18/2013WO2012094626A4 Test packer and method for use
07/18/2013WO2012041996A3 Rotating control device
07/18/2013US20130181147 Blowout preventer with port for entry between casing and tubing string and/or port for entry into tubing string
07/18/2013US20130180735 Completions fluid loss control system
07/18/2013US20130180734 Packing Element with Full Mechanical Circumferential Support
07/18/2013US20130180733 Seal ring backup devices and methods for preventing extrusion
07/18/2013US20130180732 Multiple Ramp Compression Packer
07/18/2013US20130180731 Pressure Activated Down Hole Systems and Methods
07/18/2013US20130180718 Method and apparatus for wellbore fluid treatment
07/18/2013US20130180717 System, method and apparatus for entraining air in concrete
07/18/2013US20130180716 Settable spacer fluids comprising pumicite and methods of using such fluids in subterranean formations
07/18/2013US20130180715 Methods and apparatus for cementing wells
07/18/2013US20130180706 Expandable Device for Use in a Well Bore
07/18/2013US20130180705 Expanding elastomer/plug device for sealing bore hole and pipelines
07/18/2013US20130180094 Isolating tubing
07/18/2013DE102011116953B4 Verfahren, Absperr- und Anschlussvorrichtungen zum Anbau in der Tiefsee zwecks Ausflussstoppen bzw. Anschließen an havarierten Erdgas- bzw. Erdölförderrohrstutzen, Präventer und Bohrgestänge Procedures, isolation and connection devices for cultivation in the deep sea for the purpose of stopping or discharge connection to natural gas or oil production damaged pipes, drill pipe and Präventer
07/17/2013EP2615241A2 High strength dissolvable structures for use in a subterranean well
07/17/2013CN203066927U Bracing wire claw type grout blocking hole packer
07/17/2013CN203066926U Oil field testing blowout preventer
07/17/2013CN203066925U Double-tube blowout preventer for oil well
07/17/2013CN203066924U Combination-sealed direction-dividing wear-resisting fracture mining well head equipment
07/17/2013CN203066923U Fast installed simple casing head
07/17/2013CN203066895U Multi-wing type rigid casing pipe centralizer
07/17/2013CN103210175A Bop lock down
07/17/2013CN103206191A Integrated technique of liner cementing and channeling in heavy oil production
07/17/2013CN103206190A Rapid inflation grouting hole-sealing method
07/17/2013CN103206189A Timing automatic cement feeding mechanism
07/17/2013CN103206188A Isolation packer
07/17/2013CN103206187A Blanking plug for sand prevention
07/17/2013CN103206186A Down-hole packer based on shape memory materials
07/17/2013CN103206185A Blowout preventer ram
07/17/2013CN101730785B A sealing device for a tubing arrangement, tubing structure and method for sealing the tubing structure
07/17/2013CN101460699B A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose
07/17/2013CN101243239B Oil gas well drilling system and method for grouting in the system
07/17/2013CN101107422B Methods for producing fluids from acidized and consolidated portions of subterranean formations
07/16/2013US8486869 Methods of plugging and abandoning a well using compositions comprising cement kiln dust and pumicite
07/16/2013US8486868 Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations
07/16/2013US8485267 Hydra-connector
07/16/2013US8485260 Modular backup fluid supply system
07/16/2013US8485259 Structurally stand-alone FRAC liner system and method of use thereof
07/16/2013US8485255 Water-based fluid loss additive containing an amphiphilic dispersant for use in a well
07/16/2013CA2748207C Anti-rotation device for wellhead stuffing box
07/16/2013CA2645948C High velocity string for well pump and method for producing well fluid
07/16/2013CA2582941C An injection apparatus for injecting an activated fluid into a well-bore and related injection method
07/11/2013WO2013103604A2 Sealing mechanism for subsea capping system
07/11/2013WO2013103561A1 Segregating flowable materials in a well
07/11/2013WO2013103461A1 Downhole plug drop tool
07/11/2013WO2013025516A3 Debris barrier for hydraulic disconnect tools
07/11/2013WO2011110856A3 An electric subsea valve actuating device
07/11/2013US20130175056 Method and apparatus for injecting packing into stuffing boxes for reciprocating rods
07/11/2013US20130175055 Sealing Mechanism for Subsea Capping System
07/11/2013US20130175054 Sealing mechanism for subsea capping system
07/11/2013US20130175053 Downhole plug drop tool
07/11/2013US20130175052 Performing multi-stage well operations
07/11/2013US20130175045 In-riser hydraulic power recharging
07/11/2013US20130175044 Retrievable subsea device and method
07/11/2013US20130175041 Pressure tolerant battery
07/11/2013US20130175035 Downhole tools
07/11/2013US20130175034 Drill hole plugs
07/11/2013US20130175029 Method of forming subterranean barriers with molten wax
07/11/2013CA2764302A1 Fluid or slurry pulsing casing/liner shoe
07/10/2013EP2611988A1 Multi-function isolation tool and method of use
07/10/2013EP2611987A2 Systems and methods for monitoring a parameter of a subterranean formation using swellable materials
07/10/2013CN203050657U Horizontal well infinite stage even acidification tubular column
07/10/2013CN203050613U Anti-rotating rubber plug
07/10/2013CN203050612U Well cementation rubber skin plug
07/10/2013CN203050611U Open-type cement injection apparatus
07/10/2013CN203050610U Integrated electro-hydraulic bridge plug feeding tool
07/10/2013CN203050609U Double-slip type packer
07/10/2013CN203050608U Underground electric control compression packer
07/10/2013CN203050607U Pipe column plugging device
07/10/2013CN203050606U Large-drift-diameter open-hole packer
07/10/2013CN203050605U Horizontal well section tubular column blanking plug
07/10/2013CN203050604U Multi-setting device of packer
07/10/2013CN203050603U Setting device capable of repeatedly pressurizing setting for pressurization packer
07/10/2013CN203050602U Boring waterproof device
07/10/2013CN203050601U High-pressure anti-spray orifice device for probe drilling water
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