Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
08/2012
08/22/2012CN101319604B Inverse squeezing tie-back sealing plug
08/22/2012CN101113663B Mechanical water-shutoff construction method of mine hydrophthalmos and plugging apparatus for water-shutoff
08/22/2012CA2787542A1 Downhole apparatus with packer cup and slip
08/21/2012US8246052 Bladder containment mechanism
08/21/2012US8245784 Stable organic-based fluid loss additive containing an organophilic clay-based suspending agent for use in a well
08/21/2012US8245783 Radiation-induced triggering for set-on-command compositions and methods of use
08/21/2012US8245775 Wellbore consolidating tool for rotary drilling application
08/21/2012CA2686472C Riser disconnect and support mechanism
08/21/2012CA2641618C Top drive for casing connection
08/21/2012CA2594042C Method of using an adjustable downhole formation testing tool having property dependent packer extension
08/21/2012CA2560333C Spear type blow out preventer
08/21/2012CA2555403C Connection system for subsea flow interface equipment
08/21/2012CA2540481C Expandable wellbore assembly
08/16/2012WO2012109562A2 Flow control device and methods for using same
08/16/2012WO2012109397A2 Completion assembly
08/16/2012WO2012108776A1 Device for a valve
08/16/2012WO2012106758A1 Method and tool for evaluating a geological formation
08/16/2012WO2012071217A3 Retrievable swellable packer
08/16/2012WO2012068006A3 System for controlling cement flow in a well
08/16/2012WO2012004366A3 Closure for a drill hole
08/16/2012US20120205873 Anchoring seal
08/16/2012US20120205872 Extrusion-resistant seals for expandable tubular assembly
08/16/2012US20120205561 Increased shear power for subsea BOP shear rams
08/16/2012US20120205107 Consolidating Agent Emulsions and Associated Methods
08/16/2012US20120205106 Self-Adaptive Cements
08/16/2012US20120205105 Self-Adaptive Cements
08/16/2012US20120205104 Wellbore pressure control with segregated fluid columns
08/16/2012US20120205103 Cement Slurry Monitoring
08/16/2012US20120205092 Anchoring and sealing tool
08/15/2012EP2487323A1 Riser bending relief joint
08/15/2012EP2486233A2 Formation testing planning and monitoring
08/15/2012EP2486227A1 An annular barrier
08/15/2012EP2486226A1 Interchangeable drillable tool
08/15/2012EP1534644B1 Well cementing compositions and methods
08/15/2012CN202381083U Pressure testing device of internal blowout preventing tool
08/15/2012CN202381059U Sealing sleeve assembly and tubular column assembly of oil and gas well
08/15/2012CN202381036U Suspension type squeezing bridge plug
08/15/2012CN202381035U Sliding sleeve type hollow rubber plug for well cementation
08/15/2012CN202381034U Low pressure loss type rigid cyclone centralizer
08/15/2012CN202381033U Snubbing cement squeezing type tubing plug
08/15/2012CN202381032U Permanent packer for hydraulic base seal
08/15/2012CN202381031U Packer of horizontal well
08/15/2012CN202381030U High temperature resistant pump passing slip packer applicable to extremely-viscous oil well
08/15/2012CN202381029U Bi-direction pressure-bearing drilling type ball seat
08/15/2012CN202381028U Isobaric seal coat well completion tool with double self-examining seals
08/15/2012CN202381027U Glass tail plug
08/15/2012CN202381026U Hydraulic small-diameter packer for sand prevention
08/15/2012CN202381025U Leaking stoppage discharging device of oil-leaking oil well
08/15/2012CN202381024U High water pressure exploration drill tool clamping device
08/15/2012CN202381023U Ground preventer control device with drill stem lifted breaking resistant function
08/15/2012CN202381022U Connecting device of underwater oil extraction tree cap
08/15/2012CN202381021U Leaked oil recovery device for wellhead of oil pumping well
08/15/2012CN202381020U Polish rod grease injection sealing device
08/15/2012CN202381019U Hanging and sealing device of oil well oil pipe
08/15/2012CN202381018U Oil pumping unit wellhead sealer capable of self-lubricating
08/15/2012CN202381017U Anti-falling back-to-back card of pumping unit packing box gland
08/15/2012CN202381016U Packing box automatically-centering device
08/15/2012CN202380992U Downhole pressure workover rig in oil field
08/15/2012CN202376842U Filter plate for high-temperature high-pressure dehydration instrument
08/15/2012CN102639810A Systems and methods for initiating annular obstruction in a subsurface well
08/15/2012CN102639809A Systems and methods for initiating annular obstruction in a subsurface well
08/15/2012CN102639808A Open-hole packer for alternate path gravel packing, and method for completing an open-hole wellbore
08/15/2012CN102635393A Combined hole sealing method for gas extracting and drilling delaying self-expansion capsule-paste
08/15/2012CN102635339A Immovable pumping unit
08/15/2012CN102635329A Novel double-seal arrow-shaped check valve
08/15/2012CN102635328A Method for running bridge plug sitting tool by means of differential pressure and bridge plug sitting tool utilized by same
08/15/2012CN102635327A Grouting method and system of cracked coal rock mass
08/15/2012CN102635326A Electro-hydraulic compound penetration device for horizontal subsea tree system
08/15/2012CN102635325A Mechanical workover floating type wellhead protection device and use method
08/15/2012CN101387190B Well killing method using absorbent resin to protect low pressure oil and gas reservoir
08/14/2012US8240392 Use of foam shape memory polymer to transport acid or other wellbore treatments
08/14/2012US8240389 Combined tree stab and control interface
08/14/2012US8240385 Low heat of hydration cement compositions and methods of using same
08/14/2012US8240384 Forming structures in a well in-situ
08/14/2012US8240380 Polymers and nanoparticles formulations with shear-thickening and shear-gelling properties for oilfield applications
08/14/2012US8240376 Pressure equalising devices
08/14/2012CA2697395C Method and apparatus for a packer assembly
08/14/2012CA2521763C Pump plug
08/11/2012CA2765650A1 Self-adaptive cements
08/11/2012CA2765647A1 Self-adaptive cements
08/09/2012WO2012106623A2 Method of corrosion mitigation using nanoparticle additives
08/09/2012WO2012106130A2 Blowout preventer translating shaft locking system
08/09/2012WO2012106061A2 Blowout preventer seal and method of using same
08/09/2012WO2012106012A1 Methods of maintaining sufficient hydrostatic pressure in multiple intervals of a wellbore in a soft formation
08/09/2012WO2012105852A1 Tool and method to plug and abandon a well
08/09/2012WO2012104257A1 System for lining a wellbore
08/09/2012WO2012104256A1 Method and wellbore system
08/09/2012US20120199762 Blowout preventer translating shaft locking system
08/09/2012US20120199360 Subsea Connection Apparatus for a Surface Blowout Preventer Stack
08/09/2012US20120199350 Low Heat of Hydration Cement Compositions and Methods of Using Same
08/09/2012US20120199349 Plug retainer and method for wellbore fluid treatment
08/09/2012US20120199348 Plugging a Mined-Through Well
08/09/2012US20120199346 Completion assembly
08/09/2012US20120199341 Segmented Collapsible Ball Seat Allowing Ball Recovery
08/09/2012US20120199340 Consumable downhole tool
08/09/2012US20120199339 Annular barrier
08/09/2012CA2825945A1 Blowout preventer translating shaft locking system
08/09/2012CA2825797A1 Methods of maintaining sufficient hydrostatic pressure in multiple intervals of a wellbore in a soft formation
08/09/2012CA2825374A1 Blowout preventer seal and method of using same
08/09/2012CA2823816A1 Tool and method to plug and abandon a well
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