| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/23/2014 | WO2014015102A1 Blowout preventer with pressure-isolated operating piston assembly |
| 01/23/2014 | WO2014015050A2 Adjustable isolation sleeve assembly for well stimulation through production tubing |
| 01/23/2014 | WO2014015036A2 High pressure isolation system for well stimulation through production tubing |
| 01/23/2014 | WO2014014629A1 Sacrificial plug for use with a well screen assembly |
| 01/23/2014 | WO2014014591A1 Disintegrable deformation tool |
| 01/23/2014 | WO2014014450A1 Reclosable multi zone isolation tool and method for use thereof |
| 01/23/2014 | WO2014013490A1 Tunneled gas storage |
| 01/23/2014 | WO2014012566A1 Rotating locking device with secondary release mechanism |
| 01/23/2014 | WO2013178295A9 Apparatus and method for controlling pressure in a borehole |
| 01/23/2014 | US20140024561 Absorbent Polymers, and Related Methods of Making and Using the Same |
| 01/23/2014 | US20140021382 Asymmetrical button for ram-type blowout preventers |
| 01/23/2014 | US20140021381 Blowout preventer with pressure-isolated operating piston assembly |
| 01/23/2014 | US20140020912 Reclosable Multi Zone Isolation Tool and Method for Use Thereof |
| 01/23/2014 | US20140020911 Downhole tool system and method related thereto |
| 01/23/2014 | US20140020910 In Situ Plasticization of Polymers For Actuation or Mechanical Property Change |
| 01/23/2014 | US20140020906 Cartridge Valve Assembly for Wellhead |
| 01/23/2014 | US20140020895 Foaming of Set-Delayed Cement Compositions Comprising Pumice and Hydrated Lime |
| 01/23/2014 | US20140020894 Methods and devices for isolating wellhead pressure |
| 01/23/2014 | US20140020889 Well multiple casing installation system |
| 01/23/2014 | US20140020888 Independent guide string hanger |
| 01/22/2014 | CN203403876U Sidetracked well three-layer water searching and clamping and production operation integrated tubular column |
| 01/22/2014 | CN203403860U Spoiler ball seat with sealing ring |
| 01/22/2014 | CN203403859U Large-pressure-difference double-floating anti-creep packer |
| 01/22/2014 | CN203403858U Automatic compensation type steam injection packer |
| 01/22/2014 | CN203403857U Self-supporting fracturing packer |
| 01/22/2014 | CN203403856U Outer-injection type gas drainage and coal seam water injection hole packer |
| 01/22/2014 | CN203403855U Hydraulic release telescopic pipe for oil well |
| 01/22/2014 | CN203403854U Well mouth blowout preventer for large-diameter logging instrument |
| 01/22/2014 | CN203403853U Cylindrical blowout preventer for hydraulic control sucker rod |
| 01/22/2014 | CN203403852U Integrated type first main valve Christmas tree |
| 01/22/2014 | CN203403455U Rope-sawing groove-cutting machine |
| 01/22/2014 | CN103527242A United under pressure gas drainage hole sealing method and applied double-layer expansion rubber pipes thereof |
| 01/22/2014 | CN103527241A Hole sealing device |
| 01/22/2014 | CN103527140A Cement pipe dado filling and grouting technology |
| 01/22/2014 | CN103527139A Drillable casing pipe float collar float shoe device |
| 01/22/2014 | CN103527138A Float collar and float shoe device special for horizontal well |
| 01/22/2014 | CN103527137A Method for improving well wall stability |
| 01/22/2014 | CN103527136A Expansion hanger |
| 01/22/2014 | CN103527135A Double-cylinder compression packer |
| 01/22/2014 | CN103527134A Compound pressure stabilization rubber plug |
| 01/22/2014 | CN103527133A Packer |
| 01/22/2014 | CN103527132A Constant pressure device |
| 01/22/2014 | CN103527131A Compact and rapid tubing hanger |
| 01/21/2014 | US8632047 Shear blade geometry and method |
| 01/21/2014 | US8631878 Wellhead annulus seal assembly and method of using same |
| 01/21/2014 | US8631876 Method of making and using a functionally gradient composite tool |
| 01/21/2014 | US8631873 Tubing hanger—production tubing suspension arrangement |
| 01/21/2014 | CA2755819C Well tools utilizing swellable materials activated on demand |
| 01/21/2014 | CA2649412C Aqueous gels for well bore strengthening |
| 01/21/2014 | CA2634213C Controlling pressure and static charge within a wellbore |
| 01/21/2014 | CA2613775C Downhole valve assembly |
| 01/20/2014 | CA2821254A1 Cartridge valve assembly for wellhead |
| 01/16/2014 | WO2014012056A2 Packer setting and/or unsetting |
| 01/16/2014 | WO2014011524A1 Single trip gravel pack system and method |
| 01/16/2014 | WO2014011391A2 Methods relating to designing wellbore strengthening fluids |
| 01/16/2014 | WO2014011351A1 Formation treatment system |
| 01/16/2014 | WO2014011194A1 High pressure seal back-up |
| 01/16/2014 | WO2014011071A1 Methods for servicing subterranean wells |
| 01/16/2014 | WO2014010267A1 Downhole tool member for hydrocarbon resource recovery |
| 01/16/2014 | WO2014008598A1 Drilling fluids with nano and granular particles and their use for wellbore strengthening |
| 01/16/2014 | WO2013052830A3 Seal assemblies in subsea rotating control devices |
| 01/16/2014 | US20140015201 High pressure seal back-up |
| 01/16/2014 | US20140014374 Swellable packer |
| 01/16/2014 | US20140014372 Pipe in Pipe Piston Thrust System |
| 01/16/2014 | US20140014371 Expandable downhole seat assembly |
| 01/16/2014 | US20140014361 Automatic Annular Blow-Out Preventer |
| 01/16/2014 | US20140014356 Gate valve assembly |
| 01/16/2014 | US20140014355 Marine Riser Isolation Tool |
| 01/16/2014 | US20140014353 Packer setting and/or unsetting |
| 01/16/2014 | US20140014341 Thermally enhanced hdd grout |
| 01/16/2014 | US20140014340 Downhole sleeve system and method |
| 01/16/2014 | US20140014339 Disintegrable deformation tool |
| 01/16/2014 | CA2876005A1 Methods relating to designing wellbore strengthening fluids |
| 01/15/2014 | EP2683912A2 Method and apparatus for sealing a wellbore |
| 01/15/2014 | EP2683911A2 Pump system |
| 01/15/2014 | CN203394572U Liquid state and gas state pressurizing type gas hole packer |
| 01/15/2014 | CN203394451U Leak-sealing water-blocking oil extraction tubular column for heavy oil horizontal well |
| 01/15/2014 | CN203394443U Pumping unit well mouth packing adding and extracting device |
| 01/15/2014 | CN203394432U Active drilling and hole-sealing device |
| 01/15/2014 | CN203394431U Grouting hole-sealing device |
| 01/15/2014 | CN203394430U Grouting hole packer |
| 01/15/2014 | CN203394429U Drilling-free stage-by-stage cementing unit |
| 01/15/2014 | CN203394428U Leather cup and rubber sleeve combined type packer |
| 01/15/2014 | CN203394427U Takable intubation tube water injection bridge plug |
| 01/15/2014 | CN203394426U Continuous pressurized hole drilling and hole sealing device |
| 01/15/2014 | CN203394425U Underground reservoir protection device |
| 01/15/2014 | CN203394424U Rapid controllable blowout prevention pipe plug |
| 01/15/2014 | CN203394423U Lead sealing packer |
| 01/15/2014 | CN203394422U End face combination antifouling chip-removal structure of rotary blowout preventer |
| 01/15/2014 | CN203394421U Large-displacement erosion-resistant casing structure of rotary blowout preventer |
| 01/15/2014 | CN203394420U Rod type oil pump blowout preventer |
| 01/15/2014 | CN203394419U Multifunctional rapid connection device of wellhead |
| 01/15/2014 | CN203394418U Manual type rapid plugging device and socket spanner thereof |
| 01/15/2014 | CN203394417U Wellhead anti-contamination device |
| 01/15/2014 | CN203394416U Environment-friendly well mouth packing gland with drainage device |
| 01/15/2014 | CN203394415U Plunger pump packing box capable of being conveniently disassembled and assembled |
| 01/15/2014 | CN203394414U Hand injury-preventing packing box gland |
| 01/15/2014 | CN203394413U Universal adjusting device for packing box |
| 01/15/2014 | CN203394412U Automatic underground well killing device |
| 01/15/2014 | CN203394396U A device capable of automatically closing packer backwashing well |