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