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)
09/2010
09/08/2010CN201574721U Horizontal well and vertical well fracture packer
09/08/2010CN201574720U Stopper supporting barrel
09/08/2010CN201574719U Thermal recovery packer
09/08/2010CN201574718U Blowout preventer at top end of oil pumping rod
09/08/2010CN201574717U Rotary annular blowout preventer
09/08/2010CN201574716U Oil well packing box self-locking pressure cap
09/08/2010CN201574715U Oil pipe anti-scurrying device
09/08/2010CN201574714U Ocean underwater quick connection seal gasket ring
09/08/2010CN101827998A Water sensing adaptable in-flow control device and method of use
09/08/2010CN101827913A Method for treating a fractured formation
09/08/2010CN101824979A Emulsion process profile control and water shutoff method of thickened oil steam-stimulated well
09/08/2010CN101824973A Oil-swelling self-packing packer
09/08/2010CN101824172A Preparation method of high temperature and high pressure resistant rubber sealing material
09/07/2010US7789163 Dual-stage valve straddle packer for selective stimulation of wells
09/07/2010US7789161 Apparatus for interconnecting and sealing between fixed and rotating conduits and methods of installing same
09/07/2010US7789150 cementing well; rapid strength development; terpolymer rubber of 2-acrylamido-2-methylpropanesulfonic acid and butadiene and styrene
09/07/2010US7789149 Methods of servicing wellbore with composition comprising ultra low density thermatek® slurries
09/07/2010US7789148 Method and apparatus for consolidating a wellbore
09/07/2010US7789138 Well casing straddle assembly
09/07/2010US7789137 Non-metallic mandrel and element system
09/07/2010US7789136 Non-metallic mandrel and element system
09/07/2010US7789135 Non-metallic mandrel and element system
09/07/2010US7789133 Erosion resistant frac head
09/07/2010CA2444776C Drilling system with expandable sleeve
09/02/2010WO2010099269A1 Subsea connector
09/02/2010WO2010099113A1 Dual mini well surface control system
09/02/2010WO2010098930A2 Sealing array for high temperature applications
09/02/2010WO2010096870A1 Flowable material delivery system
09/02/2010WO2010080294A3 Single trip positive lock adjustable hanger landing shoulder device
09/02/2010US20100218955 Oil field system for through tubing rotary drilling
09/02/2010US20100218951 Cementing with Electric Line Coiled Tubing
09/02/2010US20100218950 Biocide for well stimulation and treatment fluids
09/02/2010US20100218949 Swellable Elastomers and Associated Methods
09/02/2010US20100218939 Hybrid wellhead system and method of use
09/02/2010US20100218938 Heat exchanger system and method of use thereof and well drilling equipment comprising same
09/02/2010US20100218937 Seal For A Drill String
09/02/2010US20100218879 Non-Metallic Mandrel and Element System
09/02/2010CA2752848A1 Sealing array for high temperature applications
09/02/2010CA2750346A1 Flowable material delivery system
09/01/2010EP2222935A2 Wired multi-opening circulating sub
09/01/2010EP2222612A1 Copolymer based on a compound comprising sulfonic acid
09/01/2010CN201568075U Hole sealing air-charging device
09/01/2010CN201568049U Automatic pressure test device of oil-production wellhead equipment
09/01/2010CN201568048U Constant-pressure sealing check device
09/01/2010CN201568035U Self-limiting protector for water-feeding of well mouth
09/01/2010CN201568034U Selective zone commingled oil production pipe string
09/01/2010CN201568027U Non-well-killing rod inspection operation device of pumping well
09/01/2010CN201568025U Quick-mounted blowout-control and anti-jacking well control device
09/01/2010CN201568017U Cementing plug pack-off device for exploration and development of oilfield
09/01/2010CN201568016U Hole drilling and well drilling intercept type leak stoppage tool
09/01/2010CN201568015U Micro-ring gap interporosity flow blocker
09/01/2010CN201568014U Stage well cementing tool assembly
09/01/2010CN201568013U Two-stage cementer free from drilling
09/01/2010CN201568012U Stage hoop
09/01/2010CN201568011U Chemical medium filling solidification type external packer
09/01/2010CN201568010U Special sealing cup assembly for equaldiameter drill completion expand tube
09/01/2010CN201568009U Downhole pressure gauge blanking plug capable of releasing pressure
09/01/2010CN201568008U Underground operation tamperproof device
09/01/2010CN201568007U Wellhead blowout control sealing device for steam injection
09/01/2010CN201568006U Dual valve body combined sucker rod blowout preventer
09/01/2010CN201568005U Metal-to-metal sealing tieback connector
09/01/2010CN201568004U Coal bed gas dual-purpose production and exhaust well mouth device
09/01/2010CN201568003U Ultra-high pressure fracturing and acidizing oil-extracting wellhead device
09/01/2010CN201568002U High-pressure polished rod sealer
09/01/2010CN201568001U Electric submersible pump sealing wellhead
09/01/2010CN201568000U Integral-type platform oil producing wellhead device
09/01/2010CN201567999U Hydraulic electric control no-killing operation unit
09/01/2010CN201567998U Drainage gas production well head sealed suspending device
09/01/2010CN201567997U Novel 90 degrees thermal expansion well head compensator
09/01/2010CN201567983U Coal bed gas-well bridge type non-pollution continuous coal ash flushing technological pipe column
09/01/2010CN101818957A System utilizing heat storage of underground aquifer for heating or utilizing cold storage for cooling
09/01/2010CN101818638A Fracturing and separate zone production combined operation device and method
09/01/2010CN101818628A Process for extruding and sealing packer
09/01/2010CN101818627A Safety device of floating drilling platform on sea during typhoon or hurricane
09/01/2010CN101818619A Well cementation and completion structure and process for cased branch well with temporarily-sealed opening
09/01/2010CN101173601B Rotatable hydraulic expanding type tail pipe hanger
09/01/2010CN101061291B Method of sealing an annular space in a wellbore
08/2010
08/31/2010US7786054 an injection fluid e.g. fresh water or salt water for removing oil from a subterranean formation; and 3,5-dimethyl-1,3,5-thiadiazinane-2-thione a biocide to inhibit bacterial growth
08/31/2010US7786049 boring well bores using mixtures of water, nanoparticles comprising polyvinyl pyrrolidone or rubber latex, and optionally salts, antifoams, biocides,corrosion inhibitors, dispersants, flocculants,scavengers, lubricants, scavengers, antiscaling or flow control agents
08/31/2010US7784550 Downhole apparatus with a swellable connector
08/31/2010US7784545 In-situ method of fracturing gas shale and geothermal areas
08/31/2010US7784542 Cementing in a subterranean formation by introducing a cement, a nanoparticle free of silica fume, latex, and water into the formation, and allowing the cement composition to set
08/31/2010US7784536 Packer insert for sealing on multiple items used in a wellbore
08/31/2010US7784532 Shunt tube flowpaths extending through swellable packers
08/31/2010CA2579647C Control systems and methods for active controlled bottomhole pressure systems
08/31/2010CA2462071C Multi-purpose coiled tubing handling system
08/31/2010CA2453400C Method of expanding a tubular element in a wellbore
08/26/2010WO2010096417A2 Swellable material activation and monitoring in a subterranean well
08/26/2010WO2010096218A1 Positive locked slim hole suspension and sealing system with single trip deployment and retrievable tool
08/26/2010US20100212902 Conductive cement formulation and application for use in well
08/26/2010US20100212901 Downhole vibration apparatus and methods
08/26/2010US20100212900 Running and Cement Tubing
08/26/2010US20100212899 Downhole gap sealing element and method
08/26/2010US20100212898 Methods and compositions for consolidating particulate matter in a subterranean formation
08/26/2010US20100212895 Screen Flow Equalization System
08/26/2010US20100212892 Methods of formulating a cement composition
08/26/2010US20100212891 Swellable Material Activation and Monitoring in a Subterranean Well
08/26/2010US20100212886 Downhole Tool Actuation having a Seat with a Fluid By-Pass
08/26/2010US20100212885 Downhole Tool Actuation having a Seat with a Fluid By-Pass
08/26/2010US20100212884 Ratchet Mechanism in a Fluid Actuated Device
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