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)
09/2012
09/19/2012CN102686824A Retrieval method for opposed slip type packers
09/19/2012CN102678164A Hole sealing device for multi-parameter testing of coal mine underground gas
09/19/2012CN102678084A Cylindrical hole sealing bag
09/19/2012CN102678083A Grouting method and grouting device
09/19/2012CN102678082A Drilling riser adapter (11) connecting member possessing submarine operation
09/19/2012CN102678081A Retractable packing box capable of adding and taking packing without tool
09/19/2012CN102678080A Double-stage lifting oil-water well snubbing operation device
09/19/2012CN102678079A Natural gas double-wellhead device
09/19/2012CN102678078A Double-metal sealing assembly for oil production
09/19/2012CN102678075A Mudline managed pressure drilling and enhanced influx detection
09/19/2012CN102678043A Method for constructing flow plastic interlayer by adjusting hole drill
09/19/2012CN102676137A Crude oil emulsifier for water shutoff of oil well and preparation method and application of crude oil emulsifier
09/19/2012CN102121395B Method for integrated comprehensive management of gas in low-permeability single coal bed
09/19/2012CN101748990B Releasing packer well-washing device
09/18/2012US8267176 Formation conditioning fluids comprising peroxides and methods relating thereto
09/18/2012US8267175 Method for wellbore servicing to enhance the mechanical strength of cement using electrochemically activated water
09/18/2012US8267174 Internal retention mechanism
09/18/2012US8267173 Open hole completion apparatus and method for use of same
09/18/2012US8267168 Regulator dampening device and method
09/18/2012CA2565137C Packer with bypass channels
09/16/2012CA2771741A1 Downhole system and apparatus incorporating valve assembly with resilient deformable engaging element
09/16/2012CA2771732A1 Multistage production system incorporating valve assembly with collapsible or expandable c-ring
09/13/2012WO2012122089A2 Expandable isolation packer
09/13/2012WO2012121866A2 Method and apparatus for sealing a wellbore
09/13/2012WO2012121745A2 Metal chevron axial seal
09/13/2012WO2012119249A1 Mechanical liner drilling cementing system
09/13/2012US20120227988 Metal Annulus Seal
09/13/2012US20120227987 Method and apparatus for sealing a wellbore
09/13/2012US20120227986 Temperature dependent swelling of a swellable material
09/13/2012US20120227980 Selective dart system for actuating downhole tools and methods of using same
09/13/2012US20120227978 System and method for drilling a subsea well
09/13/2012US20120227969 External Casing Packer
09/13/2012US20120227958 Sealing Feed Through Lines for Downhole Swelling Packers
09/13/2012US20120227957 Expandable Isolation Packer
09/13/2012US20120227956 Wellhead isolation tool and wellhead assembly incorporating the same
09/13/2012CA2828987A1 Subsea actuation system
09/13/2012CA2828956A1 Method and apparatus for sealing a wellbore
09/13/2012CA2828830A1 Plug and pump system for routing pressurized fluid
09/13/2012CA2828770A1 Pump system
09/12/2012CN202431252U Rapid-inserting type open-blow rotary faucet
09/12/2012CN202431250U Simple expanding packer
09/12/2012CN202431249U Anti-jamming packer
09/12/2012CN202431248U Self-lock limiting packer
09/12/2012CN202431247U Hydraulic control system for blowout preventers of snubbing operation device
09/12/2012CN202431246U Polished rod sealer of secondary packing for producing well
09/12/2012CN202431245U Self-sealing head
09/12/2012CN202431218U Blowout prevention high-pressure resistance bypass nipple
09/12/2012CN102667054A Interchangeable drillable tool
09/12/2012CN102661135A Full-automatic oil discharger
09/12/2012CN102660241A High temperature-resistant oil well cement, underground high temperature-resistant oil well cement paste and well cementation process method
09/12/2012CN102660117A Resin material, composite well repair material and well repair process
09/12/2012CN101812981B Mechanical underground all-in-one blowout preventer
09/12/2012CN101748985B Well blowout preventer mounted on drilling column and automatically controlling in well
09/12/2012CN101748984B Automatically controlled well blowout preventer mounted in drilling column
09/12/2012CN101608536B Passive type multifunctional well head backflow dredging compensating device
09/11/2012US8262322 Pile with integral geothermal conduit loop retaining means
09/11/2012US8261840 Alignment of BOP stack to facilitate use of a rotating control device
09/11/2012US8261827 Methods and compositions comprising kiln dust and metakaolin
09/11/2012US8261826 Wellbore pressure control with segregated fluid columns
09/11/2012CA2711206C Stuffing box for progressing cavity pump drive
09/11/2012CA2524966C Compositions and methods for treating lost circulation
09/11/2012CA2517562C Flexible cementing compositions and methods for high-temperature wells
09/07/2012WO2012118611A2 Well plug and abandonment choke insert
09/07/2012WO2012065896A3 Bop lock down
09/07/2012WO2012000580A3 Closing and sealing a bore hole or pipe
09/07/2012CA2828331A1 Defoaming compositions and processes for cementing applications
09/06/2012US20120222862 Well plug and abandonment choke insert
09/06/2012US20120222861 Mechanical Liner Drilling Cementing System
09/05/2012EP2495391A1 Apparatus and method for processing fluids from a well
09/05/2012EP2494142A1 Subsea grease system and method of operating said system
09/05/2012EP2494141A2 Hydraulic control system monitoring apparatus and method
09/05/2012CN202420772U Split repeatable test device
09/05/2012CN202417524U Mine reinforcement material filling slip casting gun
09/05/2012CN202417488U Dual-packer formation tester for open hole
09/05/2012CN202417463U Novel hydraulic sandblasting separate layer acid treatment fracturing tool
09/05/2012CN202417462U Pressure-guide sand blast anchoring packer for multi-layer fracturing of immovable tubular column
09/05/2012CN202417426U Multifunctional cementing truck
09/05/2012CN202417425U Grouting hole packer
09/05/2012CN202417424U Self-grouting removable completing tool
09/05/2012CN202417423U Mining double-liquid grouting pump
09/05/2012CN202417422U Discharging type hole-sealing grouting pump
09/05/2012CN202417421U Pressure differential cementer for multilateral well completion
09/05/2012CN202417420U Gravel packing segmental flow guide packer for open hole of horizontal well
09/05/2012CN202417419U Self-anchoring well-flushing packer
09/05/2012CN202417418U Two-way base seal hanging packer
09/05/2012CN202417417U Tube external packer for well cementation of multilateral well
09/05/2012CN202417416U High-pressure packer for testing deep hole geostress
09/05/2012CN202417415U Heat-sensitive umbrella-shaped folding type multi-layer packer
09/05/2012CN202417414U Double-lock blanking plug for blowout prevention of oil pipe
09/05/2012CN202417413U Expansion packing and loosening preventive negative pressure generator
09/05/2012CN202417412U Water injection packer with long rubber barrel
09/05/2012CN202417411U Intelligent water plugging and yield increasing device of withdrawal well
09/05/2012CN202417410U Well washing packer
09/05/2012CN202417409U Oil pipe plugging device
09/05/2012CN202417408U Hydraulic seat sealing permanent open hole packer
09/05/2012CN202417407U Wellbore isolation ball base
09/05/2012CN202417406U Differential pressure type external casing packer for branch well completion
09/05/2012CN202417405U Underground digital type intelligent water plugging system for water injection well
09/05/2012CN202417404U Chemical reaction type blocking device for drilling
09/05/2012CN202417403U Hole sealing device for gas extraction
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