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)
10/2007
10/25/2007WO2007119025A1 Flowline heating system for a submarine hydrocarbon exploitation installation
10/25/2007WO2007118997A1 Improved probe for pressure meter
10/25/2007US20070246228 Zonal isolation using elastic memory foam
10/25/2007US20070246227 Top-down hydrostatic actuating module for downhole tools
10/25/2007US20070246224 Offset valve system for downhole drillable equipment
10/25/2007US20070246219 Seal for a fluid assembly
10/25/2007US20070246215 Blowout preventers and methods of use
10/25/2007DE102006018939A1 Konsolidierte Proppants mit hoher mechanischer Festigkeit und Verfahren zu deren Herstellung Consolidated proppants with high mechanical strength, and processes for their preparation
10/25/2007CA2648726A1 Improved probe for pressure meter
10/24/2007CN200964825Y Blowout prevention plug for oil well pipe
10/24/2007CN200964824Y Oil well port integrated valve for oil extraction of oil field
10/24/2007CN200964823Y Liner well-cementing hollow rubber plug
10/24/2007CN200964822Y Double-stage cement-injection tool
10/24/2007CN200964821Y Compression type packer for oil well
10/24/2007CN200964820Y Pressure balanced type static sealing pressurized workover device
10/24/2007CN200964819Y Well port oil gas mixed flow device
10/24/2007CN200964818Y Oil production wellport anti-theft device
10/24/2007CN200964817Y General high pressure portable self-sealing core
10/24/2007CN200964809Y Blowout prevention device mounting device
10/24/2007CN101061291A Method of sealing an annular space in a wellbore
10/24/2007CN100344994C Permanent downhole resonant source
10/23/2007US7285762 Sealing method and apparatus for oil and gas wells
10/23/2007US7285164 Cement of a zeolite base blend, cementitious material and proportioned fluid loss control additives; for cementing in a subterranean zone
10/23/2007US7284758 Textured seal for reduced wear
10/23/2007US7284619 Packer with positionable collar
10/23/2007US7284614 Wellbore system for simultaneous drilling and production
10/23/2007US7284611 Contacting a lost circulation zone with a lost circulation composition; resilient particles and thermoset polymer laminate particles; trimodal particle sizes
10/23/2007US7284610 Acid ammonium salts of an imide of polymaleic anhydride; hydraulic fracturing fluids used in enhanced oil recovery
10/23/2007US7284609 Methods of using settable spotting compositions comprising cement kiln dust
10/23/2007US7284608 Casing strings and methods of using such strings in subterranean cementing operations
10/23/2007CA2465058C Quick release blowout preventer bonnet
10/23/2007CA2297652C Packer
10/18/2007US20070242265 Borehole Imaging
10/18/2007US20070240885 Packer sealing element with shape memory material
10/18/2007US20070240883 Downhole Tool
10/18/2007US20070240882 Accumulator for Subsea Equipment
10/18/2007US20070240877 Packer sealing element with shape memory material
10/18/2007US20070240874 Armored stripper rubber
10/17/2007EP1844211A1 Ram automatic locking system for a blowout preventer
10/17/2007EP1725738B1 System for sealing an annular space in a wellbore
10/17/2007EP1485571B1 A triggering mechanism for disconnecting a riser from a riser connector
10/17/2007CN200961479Y Gamma logging device graduation device for density and thickness
10/17/2007CN200961469Y Three-layer water exploitation switch valve for pumping well of oil field
10/17/2007CN200961465Y Packer capable of checking seal
10/17/2007CN200961464Y Compensation expansion type affusion packer
10/17/2007CN200961463Y Simple casing head
10/17/2007CN200961462Y Following type polish rod sealer
10/17/2007CN200961461Y Polish rod cleaner
10/17/2007CN200961457Y Hydraulic liner-releasing hanger
10/17/2007CN101054895A Sand blower release-controllable multiple-layer laminated fracture string device and controllable release method
10/17/2007CN101054893A Dissection type packer
10/17/2007CN101054892A Inversion-proof packing box for oil extraction well port
10/16/2007US7281589 Ball dropping tool method and apparatus
10/16/2007US7281586 Mounts for blowout preventer bonnets
10/16/2007US7281583 Self-dissolving lost circulation treatment for producing formations
10/16/2007US7281582 Double swivel apparatus and method
10/16/2007US7281579 Method for terminating or reducing water flow in a subterranean formation
10/16/2007US7281577 Downhole measurement system and method
10/16/2007US7281576 Apparatus and methods for sealing voids in a subterranean formation
10/16/2007US7281443 Manual control device
10/16/2007CA2116520C Drilling fluid containment apparatus for use in disconnecting a kelly from a drill string
10/11/2007WO2007113753A2 Well servicing methods and systems
10/11/2007WO2007112811A1 Method and apparatus to cement a perforated casing
10/11/2007WO2007112810A1 Method and apparatus for selective treatment of a perforated casing
10/11/2007WO2006102496A3 Novel wellhead valves
10/11/2007US20070235194 Packer apparatus with annular check valve
10/11/2007US20070235192 A liquid carrier and a retarder system of borate, organophosphonate salt, and a copolymer of acrylamido-2-methyl-1-propanesulfonic acid/2-/ andacrylic acid and/or acrylamide; delaying the setting ofhigh-density cement slurries used to plug deep, hot wells oil or gas wells; heat resistance
10/11/2007US20070235191 Push/pull belleville stack for use with zertech MTM seal
10/11/2007US20070235182 Cup tool with three-part packoff for a high pressure mandrel
10/11/2007DE202007008940U1 Bohrlochverschluss mit integriertem Mischer Packer with integrated mixer
10/11/2007CA2647546A1 Well servicing methods and systems
10/11/2007CA2549782A1 Method for recovering hydrocarbons from subterranean formations
10/10/2007EP1841946A1 Method and system for cleaning a well bore
10/10/2007CN200959083Y Pressure-test data collecting controller of blowout preventer
10/10/2007CN200958384Y Oil-wellhead thermal-insulating box
10/10/2007CN200958383Y Double-slips metal integrated sealed sleeved pipe head
10/10/2007CN200958382Y Wellhead offset equipment
10/10/2007CN200958381Y Fluid filler optical lever sealer of dynamic balanced
10/10/2007CN200958380Y Oil-gas wellhead sealer
10/10/2007CN101050696A Bag type paste injection hole sealing device and its hole sealing method
10/10/2007CN100342118C Well treating process and system
10/09/2007US7279447 E.g., 1,1'-thiobis(3-butoxypropan-2-ol) or a mixture of 1,1,-thiobis(3-dodecyloxypropan-2-ol), 1,1,-thiobis(3-tetradecyloxypropan-2-ol) and 1,1,-thiobis(3-hexadecyloxypropan-2-ol); compounds achieve low surface tension at low use levels
10/09/2007US7278494 Stripper rubber insert assembly
10/09/2007US7278493 Auto entry guide
10/09/2007US7278490 Blast joint swivel for wellhead isolation tool and method of using same
10/09/2007US7278484 Techniques and systems associated with perforation and the installation of downhole tools
10/09/2007US7278477 Cup tool, cup tool cup and method of using the cup tool
10/09/2007CA2267426C Continuous circulation drilling method
10/04/2007WO2007112042A2 Downhole tool with c-ring closure seat
10/04/2007WO2007075855A3 Concentric coiled tubing annular fracturing string
10/04/2007WO2007067264A3 Determination of well shut-in time for curing resin-coated proppant particles
10/04/2007WO2007024372A3 Inner guide seal assembly for a ram type bop system
10/04/2007US20070227746 Packer cup systems for use inside a wellbore
10/04/2007US20070227745 Secondary lock for a downhole tool
10/04/2007US20070227740 Flying Lead Connector and Method for Making Subsea Connections
10/04/2007US20070227735 System and Method for Well Treatment and Perforating Operations
10/04/2007US20070227734 Method and Device for Sealing a Void Incompletely Filled with a Cast Material
10/04/2007US20070227733 Method of sealing an annulus surrounding a slotted liner
10/04/2007US20070227732 Method of fracturing a coalbed gas reservoir
10/04/2007US20070227730 Apparatus for radially expanding and plastically deforming a tubular member
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