| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/10/2013 | CN203050600U Automatic blowout prevention box |
| 07/10/2013 | CN203050599U Disconnecting device |
| 07/10/2013 | CN203050598U On-line pressure sealing composite structure of suspension body of casing head |
| 07/10/2013 | CN203050597U Suspension device of coiled tubing |
| 07/10/2013 | CN203050596U Annular plugging device |
| 07/10/2013 | CN203050595U Novel well temperature leakage-detecting blowout-prevention stream guiding device |
| 07/10/2013 | CN203050594U Ground hydraulic control anti-pipe-spraying device |
| 07/10/2013 | CN203050593U Polished rod sealing device |
| 07/10/2013 | CN203050592U Length-adjustable multistage logging lubricator |
| 07/10/2013 | CN103201454A Multi-function isolation tool and method of use |
| 07/10/2013 | CN103201453A Dissolvable bridge plug |
| 07/10/2013 | CN103195470A Gas discharge collecting device for drilling construction |
| 07/10/2013 | CN103195468A System process for conducting efficient strengthened extraction in surrounding rock |
| 07/10/2013 | CN103195390A Mining-coal bed nearly horizontal gas extraction borehole sealing method |
| 07/10/2013 | CN103195389A Suspension packer for open hole well completion |
| 07/10/2013 | CN103195388A Two-plugging hole packer and plugging grouting method |
| 07/10/2013 | CN103195380A Hole sealing device |
| 07/10/2013 | CN103194193A Emulsified asphalt controllable demulsification water plugging agent, preparation method of emulsified asphalt controllable demulsification water plugging agent and method for plugging water by using water plugging agent |
| 07/10/2013 | CN103194192A Alkali-resistant polymer particle profile control agent |
| 07/10/2013 | CN102268972B Method for preventing setting failure of packer resulted from creeping of pipe string |
| 07/10/2013 | CN102181274B Thixotropic chemical sealing channeling agent |
| 07/10/2013 | CN102071897B Side door blowout preventing box |
| 07/10/2013 | CN101967964B Method for prewashing multi-density double-setting long-sealing gas channeling prevention well cementing |
| 07/10/2013 | CN101939503B System and method for providing additional blowout preventer control redundancy |
| 07/10/2013 | CA2801547A1 Method and device for zonal isolation and management of recovery of horizontal well drained reserves |
| 07/09/2013 | US8481463 Oil-based grouting composition with an insulating material |
| 07/09/2013 | US8479832 Method and apparatus for setting an inflatable packer in a subhydrostatic wellbore |
| 07/09/2013 | US8479829 Alignment of BOP stack to facilitate use of a rotating control device |
| 07/09/2013 | US8479819 Method of consolidating a fracture in a formation |
| 07/09/2013 | US8479818 Method and apparatus to cement a perforated casing |
| 07/09/2013 | US8479817 Method and composition for curing lost circulation |
| 07/09/2013 | US8479810 Downhole apparatus |
| 07/09/2013 | US8479809 Anti-extrusion backup system, packing element system having backup system, and method |
| 07/09/2013 | CA2736804C Pressure relieving transition joint |
| 07/09/2013 | CA2735449C Isolating tubing |
| 07/09/2013 | CA2718793C Wellbore anchor and isolation system |
| 07/09/2013 | CA2589600C Methods and apparatus for drilling with casing |
| 07/09/2013 | CA2562461C Method of treating oil and gas wells |
| 07/04/2013 | WO2013102131A2 Annular sealing in a rotating control device |
| 07/04/2013 | WO2013101715A2 Downhole tool with pumpable section |
| 07/04/2013 | WO2013097034A1 Apparatus for retaining rig slips in alignment with a flow control device |
| 07/04/2013 | WO2013004495A3 Closure apparatus for a defective blowout preventer |
| 07/04/2013 | US20130168578 Blowout Preventer Assembly |
| 07/04/2013 | US20130168104 Metal-to-metal sealing arrangement for control line and method of using same |
| 07/04/2013 | US20130168087 Downhole tool and method |
| 07/04/2013 | CA2850974A1 Downhole tool with pumpable section |
| 07/03/2013 | EP2610429A2 Downhole isolation methods and apparatus therefor |
| 07/03/2013 | EP2610428A2 Shear blade and method of attachment to shear rams |
| 07/03/2013 | EP2609285A1 Rapid swelling and un-swelling materials in well tools |
| 07/03/2013 | CN203035203U Pressure-isolating, permeating and cementing grouting device of borehole casing for roadway water-surrounded broken rock |
| 07/03/2013 | CN203035157U Double-layer oil jacket separate zone water injection packer |
| 07/03/2013 | CN203035156U Packer |
| 07/03/2013 | CN203035155U Trigger type oil tube blanking plug |
| 07/03/2013 | CN203035154U Plugging device hung outside oil pipe |
| 07/03/2013 | CN203035153U Self-operated energy-saving well mouth corrosion-resistant abrasion-resistant sealing device |
| 07/03/2013 | CN203035152U Sand gushing preventive device for perforation |
| 07/03/2013 | CN203035151U Well head device for water hole sand washing |
| 07/03/2013 | CN203035150U Coiled tubing self-styled blowout preventer |
| 07/03/2013 | CN203035149U High-pressure elbow sealer |
| 07/03/2013 | CN203035105U Inverse slip casting casing pipe of elevation angle drill hole |
| 07/03/2013 | CN203035080U Structure for preventing hole collapse of pebble layer drilling holes |
| 07/03/2013 | CN103189593A Well emergency separation tool for use in separating a tubular element |
| 07/03/2013 | CN103189592A Downhole multiple well |
| 07/03/2013 | CN103184867A Jet packer ground simulation method applicable to multilevel hydraulic jet fracturing |
| 07/03/2013 | CN103184856A Hydraulic jet packer applicable to multilevel hydraulic jet fracturing |
| 07/03/2013 | CN103184851A Plugging technology for highly-deviated well with big casing pipe |
| 07/03/2013 | CN103184850A Bidirectional seat seal hook-wall packer, preparation method thereof and shaft circumferential packing method |
| 07/03/2013 | CN103184849A Pitshaft isolation ball seat and pitshaft isolation method |
| 07/03/2013 | CN103184848A Hydraulic seat seal permanent open hole packer and open hole well-completion packing method |
| 07/03/2013 | CN103184847A Shear blade and method of attachment to shear rams |
| 07/03/2013 | CN103184846A Drilling riser adapter with emergency functionality |
| 07/03/2013 | CN103184845A Vertical subsea tree assembly control |
| 07/03/2013 | CN103184844A Metal-to-metal sealing arrangement for control line and method of using same |
| 07/03/2013 | CN101993684B Temporary plugging agent for acidization of water injection well of low permeability reservoir |
| 07/03/2013 | CA2845490A1 Annular barrier with pressure amplification |
| 07/02/2013 | US8476203 Cement compositions comprising sub-micron alumina and associated methods |
| 07/02/2013 | US8475585 Stable foamed cement slurry compositions and methods for making and using same |
| 07/02/2013 | US8474525 Geothermal liner system with packer |
| 07/02/2013 | US8474524 Anti-extrusion packer system |
| 07/02/2013 | US8474523 Method and apparatus for treatment of a perforated casing |
| 07/02/2013 | CA2713684C High pressure/high temperature packer seal |
| 07/02/2013 | CA2646563C Tubing anchor |
| 07/02/2013 | CA2627279C Improved plug |
| 07/02/2013 | CA2580376C Sealing of a wellbore device in a tubular element |
| 06/28/2013 | CA2799335A1 Shear blade and method of attachment to shear rams |
| 06/27/2013 | WO2013096127A2 Plug and abandonment system |
| 06/27/2013 | WO2013095808A1 Chemical glass transition temperature reducer |
| 06/27/2013 | WO2013095173A1 Compositions and methods for servicing subterranean wells |
| 06/27/2013 | WO2013095154A1 A well completion arrangement and a method for preparing a well for abandonment |
| 06/27/2013 | WO2013095098A1 Seal sleeve and assembly including such a seal sleeve |
| 06/27/2013 | WO2013095093A1 Seal sleeve and assembly including such a seal sleeve |
| 06/27/2013 | WO2013095092A1 Seal sleeve and method for applying such a seal sleeve |
| 06/27/2013 | WO2013092945A1 Production system for producing hydrocarbons from a well |
| 06/27/2013 | WO2013092805A1 An annular barrier with a self-actuated device |
| 06/27/2013 | WO2013092801A1 An annular barrier with an expansion detection device |
| 06/27/2013 | WO2013091107A1 Combination burst-disc subassembly for horizontal and vertical well completions |
| 06/27/2013 | WO2012166677A3 A method of conditioning a wall of a bore section |
| 06/27/2013 | WO2012159062A3 Seal around braided cable |
| 06/27/2013 | WO2012119837A3 Method and system for well and reservoir management in open hole completions as well as method and system for producing crude oil |
| 06/27/2013 | WO2012110289A3 Test and inspection arrangement for subsea well equipment |