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)
11/2005
11/10/2005US20050247458 Methods and apparatus for use in subterranean cementing operations
11/10/2005US20050247448 Flexible cup for downhole devices
11/10/2005CA2562461A1 Method of treating oil and gas wells
11/10/2005CA2560553A1 Methods of making cement compositions using liquid additives containing lightweight beads
11/09/2005CN2739353Y Oil well packing rubber sleeve with steel rope frame
11/09/2005CN2739352Y Expanding water injection well packer
11/09/2005CN2739351Y Recycleable external-pipe packer
11/09/2005CN2739350Y 压裂式封隔器 Fracturing packer
11/09/2005CN2739349Y Simple self-mounting three-cylinder-base single-coloum wellhead platform
11/09/2005CN2739348Y Multifunction long-halt casing short-section
11/08/2005USRE38866 Pressure-boost device for downhole tools
11/08/2005US6962206 Packer with metal sealing element
11/08/2005US6962205 Subsea wellhead landing clamp and slip bowl assembly
11/03/2005WO2005103442A1 Plug setting and retrieving apparatus
11/03/2005WO2005103441A1 Restriction tolerant packer cup
11/03/2005WO2005103440A2 Deploying an assembly into a well
11/03/2005WO2005090259A3 Cement compositions containing degradable materials and methods of cementing in subterranean formations
11/03/2005WO2005071224A3 Measuring device and drilling device for deep drillings
11/03/2005WO2005031221A3 Hydraulic friction fluid heater and method of using same
11/03/2005US20050242513 High temperature high pressure seal stack having run-dry capability
11/03/2005US20050242309 Lock bars for blowout preventer
11/03/2005US20050242308 Blowout preventer and ram actuator
11/03/2005US20050242307 Blowout preventer and movable ram block support
11/03/2005US20050241855 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
11/03/2005US20050241833 Solid rubber packer for a rotating control device
11/03/2005US20050241829 Methods for selecting a cementing composition for use
11/03/2005US20050241821 System and method for well workover with horizontal tree
11/03/2005US20050241820 Polypropylene cable jacket compositons with enhanced melt strength and physical properties
11/03/2005US20050241819 Variable orifice bypass plunger
11/03/2005DE102005016595A1 Verbindungsplatte für Unterwasser-Hydraulikkupplungen Connecting plate for undersea hydraulic couplings
11/02/2005EP1590550A2 Subsea intervention system, method and components thereof
11/02/2005EP1322834B1 Modular seabed processing system
11/02/2005CN2737934Y Antitheft casing packing device
11/02/2005CN2737933Y Multifunction polish rod secondary packing box
11/01/2005US6959772 Self-penetrating soil exploration device and associated methods
11/01/2005US6959759 Expandable packer with anchoring feature
11/01/2005CA2367496C Multi-stage pressure maintenance device for subterranean well tool
11/01/2005CA2303489C Production fluid control device for oil/gas wells
10/2005
10/27/2005WO2005100737A1 System and method for rigging up well workover equipment
10/27/2005WO2005083228A9 Connection system for subsea flow interface equipment
10/27/2005US20050236836 Spring-biased pin connection system
10/27/2005US20050236835 Mechanical connection system
10/27/2005US20050236164 Restriction tolerant packer cup
10/27/2005US20050236162 Method and apparatus for expandable liner hanger with bypass
10/27/2005US20050236158 Rotating diverter head
10/27/2005US20050236155 Online thermal and watercut management
10/27/2005US20050236154 Isolation assembly for coiled tubing
10/27/2005US20050236153 Deploying an assembly into a well
10/26/2005EP1589188A2 Coupling system
10/26/2005EP1588015A2 Apparatus and methods for drilling a wellbore using casing
10/26/2005EP1588014A1 Mounts for blowout preventer bonnets
10/26/2005EP1587598A2 Polyether polyesters having anionic functionality
10/26/2005EP1438482A4 Cementing system for wellbores
10/26/2005EP1141518B1 Downhole sealing for production tubing
10/26/2005CN2736525Y Two-stage cementing device
10/26/2005CN2736524Y Dedicated wellhead for blocking and fracturing
10/26/2005CN1688790A A method and device by a displacement tool
10/26/2005CN1687558A Plug back agent specific to oilfield and manufacturing method thereof
10/26/2005CN1687557A Method for guarding against well blowout happening when pulling out the hole
10/25/2005US6958704 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
10/25/2005US6957701 Method and apparatus for stimulation of multiple formation intervals
10/25/2005US6957698 Downhole activatable annular seal assembly
10/25/2005CA2487182C Hydraulic underreamer and sections for use therein
10/25/2005CA2428613C Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
10/25/2005CA2280034C Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof
10/22/2005CA2591567A1 Method of fracing or stimulating a formation
10/20/2005WO2005098198A1 Tubing hanger running tool and subsea test tree control system
10/20/2005US20050230970 Junction plate for subsea hydraulic couplings
10/20/2005US20050230125 Packer
10/20/2005US20050230122 Setting Tool for Hydraulically Actuated Devices
10/20/2005US20050230117 Method of treating oil and gas wells
10/20/2005US20050230114 Reducing water permeability of well bore with water soluble, hyrdophilic polymer comprising dimethylaminoethyl methacrylate and/or dimethylaminopropyl methacrylamide monomer modified with cetyl bromide;
10/20/2005US20050230111 agglomeration of particles having curable coatings, by the pumping mixtures of the particles and liquid fracturing fluid into subterranean zones, then curing the coatings with heat; stabiliztion; well completion
10/20/2005US20050230108 Liner top test packer
10/20/2005US20050230106 Method and apparatus for injecting packing into stuffing boxes for reciprocating rods
10/20/2005US20050230104 Apparatus for expanding a tubular member
10/20/2005US20050230103 Apparatus for expanding a tubular member
10/20/2005US20050230102 Apparatus for expanding a tubular member
10/20/2005US20050230100 Packer with metal sealing element
10/20/2005US20050230099 Tubing saver rotator and method for using same
10/19/2005EP1585885A2 Actuator for well-head valve or other similar applications and system incorporating same
10/19/2005EP1448866B1 Method and device for boring holes
10/19/2005EP1392953A4 Line hanger, running tool and method
10/19/2005CN2734995Y Production assembly capable of recognizing oil layer hierarchically
10/19/2005CN2734986Y Multilayer water detection oil production packer
10/19/2005CN2734985Y Balance type water plugging packer
10/19/2005CN2734984Y Down-hole pen type touch switch
10/19/2005CN2734983Y Blowout preventer for oil well
10/19/2005CN2734982Y Wellhead sealer for oil well
10/19/2005CN2734981Y Monotube gathering and transferring wellhead assembly
10/19/2005CN1223544C Low-density and Low-porosity cementing slurry for oil wells or the like
10/18/2005US6955357 Extended range variable bore ram packer for a ram type blowout preventer
10/18/2005US6955225 Method of and apparatus for securing capillary tubing in a wellhead
10/18/2005US6955223 Blow out preventer handling system
10/18/2005US6955219 Earth loop installation with sonic drilling
10/18/2005US6955216 Device for injecting a fluid into a formation
10/18/2005CA2487169C Hydraulic underreamer and sections for use therein
10/18/2005CA2164254C Metal to metal sealing wireline plug
10/18/2005CA2156987C Diverter and method for running a diverter
10/13/2005WO2005095753A1 Articulated drillstring entry apparatus and method
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