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)
06/2010
06/24/2010US20100154678 Dual function cement additive
06/24/2010CA2649203A1 Proppant addition system and method
06/24/2010CA2649197A1 Proppant control in an lpg frac system
06/23/2010EP2199540A1 Damper cartridge for launching plugs in cementing operations
06/23/2010EP2199538A2 Rechargeable Subsea Force Generating Device and Method
06/23/2010EP2199537A1 Apparatus and Method for Launching Plugs in Cementing Operations
06/23/2010EP2199536A1 Dart launcher for well cementing operations
06/23/2010EP2199535A1 Subsea force generating device and method
06/23/2010EP2199534A2 Subsea electronic module
06/23/2010EP2198117A1 System and method for providing additional blowout preventer control redundancy
06/23/2010EP2198116A1 Subsea valve
06/23/2010EP2197973A1 Open-hole wellbore lining
06/23/2010CN201513172U Layer separation testing device with supporting expansion-sealing electric packers
06/23/2010CN201513155U Bridge plug releasing packer
06/23/2010CN201513154U Water distribution packer, setting core and water distribution core
06/23/2010CN201513153U Supporting expansion-sealing electric packer
06/23/2010CN201513152U Multi-stage pull-type pressure test plug
06/23/2010CN201513151U Well-flushing packer
06/23/2010CN201513148U Installation device for drilling machine blowout preventer of inclined shaft
06/23/2010CN101749005A Protection process of underground drilling hole
06/23/2010CN101748991A Hanging type oil layer protection packer
06/23/2010CN101748990A Releasing packer well-washing device
06/23/2010CN101748989A Branch well window sealing method
06/23/2010CN101748988A Deformation resistant opening chamber head and method
06/23/2010CN101748987A Subsea force generating device and method
06/23/2010CN101748986A Bidirectional flashboard BOP and method
06/23/2010CN101748985A Well blowout preventer mounted on drilling column and automatically controlled in well
06/23/2010CN101748984A Well blowout preventer mounted in drilling column and automatically controlled in well
06/23/2010CN101748983A Protector for oil pipe working under pressure used for oil well
06/23/2010CA2663423A1 Down hole tool
06/22/2010US7741249 Geosynthetic composite for borehole strengthening
06/22/2010US7741247 Methods and compositions for sealing fractures, voids, and pores of subterranean rock formations
06/22/2010US7740248 Annular seal
06/22/2010US7740079 Fracturing plug convertible to a bridge plug
06/22/2010US7740073 Wellhead seal unit
06/22/2010US7740070 A high density additive associated with a low density additive which increases in volume by >300%; iron oxide bonded to a butadiene-styrene elastomer which maintains a uniform distribution of particles in the cement slurry; nonsettling; durability; oil/gas wells
06/22/2010US7740068 Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations
06/22/2010US7740067 Method to control the physical interface between two or more fluids
06/22/2010US7740066 Additives for high alumina cements and associated methods
06/22/2010US7740061 Externally activated seal system for wellhead
06/22/2010CA2558477C One trip perforating cementing, and sand management apparatus and method
06/22/2010CA2465934C Hydraulic tools for setting liner top packers and for cementing liners
06/22/2010CA2412813C Open hole straddle tool
06/18/2010CA2703043A1 Process for blocking underground formations
06/18/2010CA2687000A1 Rechargeable subsea force generating device and method
06/18/2010CA2686918A1 Deformation resistant opening chamber head and method
06/18/2010CA2686730A1 Subsea force generating device and method
06/18/2010CA2686573A1 Bidirectional ram bop and method
06/17/2010WO2010068346A1 Bop packing units selectively treated with electron beam radiation and related methods
06/17/2010WO2010068119A1 Devices and method for equipment foundation in the sea bed
06/17/2010WO2010066341A2 Apparatus and method for launching plugs in cementing operations
06/17/2010WO2010066031A1 Pump down cement retaining device
06/17/2010WO2010065993A1 Removal/fitting of subsea sealing plug(s)
06/17/2010WO2010047600A3 Cement head with integrated energy supply for operating valves
06/17/2010WO2010037518A3 Method and device for fusion drilling
06/17/2010US20100152901 Position Data Based Method, Interface and Device for Blowout Preventer
06/17/2010US20100148447 Bi-directional wellhead seal
06/17/2010US20100147538 Packer Setting Device for High Hydrostatic Applications
06/17/2010US20100147537 Multilateral expandable seal
06/17/2010US20100147536 Variable radius annular and ram packing unit and method
06/17/2010US20100147533 Wellhead seal assembly
06/17/2010US20100147526 Method and a device for intervention in an underwater production well
06/17/2010US20100147518 Method and Composition for Enhancing Coverage and Displacement of Treatment Fluids into Subterranean Formations
06/17/2010US20100147517 Pump Down Cement Retaining Device
06/17/2010US20100147509 Large bore packer and methods of setting same
06/17/2010US20100147508 Wrap-On Reactive Element Barrier Packer and Method of Creating Same
06/17/2010US20100147507 Polymer composition, swellable composition comprising the polymer composition, and articles including the swellable composition
06/17/2010DE102009013853A1 Fehlertolerantes Chemikalien-Einspritzsystem für Öl- und Gasbohrlöcher A fault-tolerant chemical injection for oil and gas wells
06/17/2010CA2744814A1 Bop packing units selectively treated with electron beam radiation and related methods
06/16/2010EP2196619A1 Apparatus and method for Launching Plugs in Cementing Operations
06/16/2010EP2195508A2 Externally activated seal system for wellhead
06/16/2010CN201507274U Leak-resistance valve
06/16/2010CN201507271U Automatic control continuous batch slurry mixing pry
06/16/2010CN201507270U Inner tube type drilling-free multi-stage cementing tool assembly
06/16/2010CN201507269U hydraulic push-down packer
06/16/2010CN201507268U Step-by-step sealing detecting device
06/16/2010CN201507267U Packer
06/16/2010CN201507266U Automatic wellhead blowout preventer upon polish rod dropout
06/16/2010CN201507265U Coal bed gas wellhead assembly
06/16/2010CN201507264U Oil well blowout prevention anti-theft device
06/16/2010CN201507263U Uncoiled eccentric oil and gas extraction wellhead device
06/16/2010CN101743377A In situ determination of critical desorption pressures
06/16/2010CN101737019A Release packer capable of well-flushing
06/16/2010CN101413813B Turbine type flow sensor for oil field well cementing
06/16/2010CA2686921A1 Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator
06/15/2010US7735568 Packer cup systems for use inside a wellbore
06/15/2010US7735567 Packer sealing element with shape memory material and associated method
06/15/2010US7735562 Tieback seal system and method
06/15/2010US7735556 Method of isolating open perforations in horizontal wellbores using an ultra lightweight proppant
06/15/2010US7735552 Packer cups for use inside a wellbore
06/15/2010US7735549 Drillable down hole tool
06/15/2010CA2688639A1 Improved ball injector
06/15/2010CA2635852C Ball catcher for wellbore operations
06/15/2010CA2558625C Drive for a rotating chemical dispensing apparatus
06/15/2010CA2465980C Erosion resistant drilling head assembly
06/15/2010CA2425329C Inflatable packer with prestressed bladder
06/10/2010WO2010065485A1 Method and system for zonal isolation
06/10/2010WO2010065210A1 Sub-sea chemical injection metering valve
06/10/2010WO2010065023A1 Two-stage submersible actuators
06/10/2010WO2010064925A1 Plug device and method of using same
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