| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/28/2013 | US20130048306 Apparatus and method for penetrating cement surrounding a tubular |
| 02/28/2013 | US20130048289 Sealing system, method of manufacture thereof and articles comprising the same |
| 02/28/2013 | US20130048286 Methods for Determining Reactive Index for Cement Kiln Dust, Associated Compositions, and Methods of Use |
| 02/28/2013 | US20130048285 Compositions and Methods for Servicing Subterranean Wells |
| 02/28/2013 | US20130048284 Carbon dioxide-resistant portland based cement composition |
| 02/28/2013 | US20130048272 Downhole tool and method of use |
| 02/28/2013 | US20130048271 Downhole tool and method of use |
| 02/28/2013 | CA2846170A1 Universal pipe thread protector |
| 02/28/2013 | CA2845491A1 Sealing device for well components |
| 02/28/2013 | CA2843603A1 Systems and methods for gravel packing wells |
| 02/28/2013 | CA2842378A1 Downhole tool and method of use |
| 02/28/2013 | CA2787609A1 Method, device and system for monitoring subsea components |
| 02/27/2013 | EP2562423A1 Rotors |
| 02/27/2013 | EP2561179A2 Prevention, actuation and control of deployment of memory-shape polymer foam-based expandables |
| 02/27/2013 | EP2561176A1 Device for sealing a rock wall |
| 02/27/2013 | CN202755958U Intelligent profile control injection system |
| 02/27/2013 | CN202755950U Double-pipe well mouth Christmas tree |
| 02/27/2013 | CN202755942U Simple blowout preventer |
| 02/27/2013 | CN202755941U Anti-theft type screw plug device used for oil extraction shaft mouth |
| 02/27/2013 | CN202755940U Multifunctional cross |
| 02/27/2013 | CN202755939U Integral type casing head single-barrel twin-well well head device |
| 02/27/2013 | CN202755938U Rotating control head provided with buffer structure |
| 02/27/2013 | CN102943687A Pressure equalizing and hole sealing method for gas extraction drilling |
| 02/27/2013 | CN102943650A Selective exploitation tool for multilateral well and construction process of selective exploitation tool |
| 02/27/2013 | CN102943637A Apparatus for gripping a tubular on a drilling rig |
| 02/27/2013 | CN101550813B Low-level seal assembly in wellhead |
| 02/26/2013 | US8383558 Oilwell sealant compositions comprising alkali swellable latex |
| 02/26/2013 | US8381818 Apparatus for, and method of, landing items at a well location |
| 02/26/2013 | US8381816 Flushing procedure for rotating control device |
| 02/26/2013 | US8381814 Groundwater isolation barriers for mining and other subsurface operations |
| 02/26/2013 | US8381813 Methods for servicing subterranean wells |
| 02/26/2013 | US8381809 Packer with non-extrusion ring |
| 02/26/2013 | US8381808 Cement head |
| 02/26/2013 | CA2696583C Capillary hanger arrangement for deploying control line in existing wellhead |
| 02/26/2013 | CA2537153C Improved seal |
| 02/26/2013 | CA2526615C Packoff nipple |
| 02/21/2013 | WO2013025709A1 S-seal |
| 02/21/2013 | WO2013025516A2 Debris barrier for hydraulic disconnect tools |
| 02/21/2013 | WO2013025365A1 Selectively degradable passage restriction |
| 02/21/2013 | WO2012174194A3 Diverter system for a subsea well |
| 02/21/2013 | WO2012121907A3 Temperature dependent swelling of a swellable material |
| 02/21/2013 | WO2012095070A3 Sealing system for borehole pumps |
| 02/21/2013 | WO2012025715A3 Ratchet and latch mechanisms |
| 02/21/2013 | US20130043657 S-seal |
| 02/21/2013 | US20130043049 Apparatus for sealing off a part of a wall in a section drilled into an earth formation, and a method for applying the apparatus |
| 02/21/2013 | US20130043046 Wellhead System Having a Tubular Hanger Securable to Wellhead and Method of Operation |
| 02/21/2013 | US20130043027 Zonal Isolation Systems For Subterranean Wells |
| 02/21/2013 | US20130043026 Compositions And Methods For Servicing Subterranean Wells |
| 02/21/2013 | US20130043020 Method of drilling and running casing in large diameter wellbore |
| 02/21/2013 | CA2844446A1 Debris barrier for hydraulic disconnect tools |
| 02/21/2013 | CA2841992A1 Selectively degradable passage restriction |
| 02/20/2013 | EP2558680A1 Testing subsea umbilicals |
| 02/20/2013 | EP2558678A2 High strength dissolvable structures for use in a subterranean well |
| 02/20/2013 | EP2558677A1 Sequenced packing element system |
| 02/20/2013 | EP2558676A1 Blowout preventer assembly |
| 02/20/2013 | CN202745840U High-efficiency injection pipe string for large-inclination well |
| 02/20/2013 | CN202745805U Retrievable squeezing bridge plug for horizontal well |
| 02/20/2013 | CN202745804U Outer channeling groove lugging device of oil-water well sleeve |
| 02/20/2013 | CN202745803U Self-suction cement proportioning device |
| 02/20/2013 | CN202745802U 封隔器 Packer |
| 02/20/2013 | CN202745801U Novel testing packer |
| 02/20/2013 | CN202745800U Suspended packer for oil well |
| 02/20/2013 | CN202745799U Large-diameter self-locking packer |
| 02/20/2013 | CN202745798U Layered water injection centering packer of directional well |
| 02/20/2013 | CN202745797U Gradually deblocking packer for oil well |
| 02/20/2013 | CN202745796U In-cone type packer for oil well |
| 02/20/2013 | CN202745795U Hydraulic sealing and de-sealing high-pressure packer |
| 02/20/2013 | CN202745794U Multifunctional ball seat with temporary blocking performance for well-completion operation of water injection well |
| 02/20/2013 | CN202745793U Blowout preventer spherical rubber core contracting evenly |
| 02/20/2013 | CN202745792U Rapidly-taken-type cover plate on upper end of blowout prevention device |
| 02/20/2013 | CN202745791U Thick oil steam huff and puff oil extraction wellhead casing hanger |
| 02/20/2013 | CN202745790U Double-stage casting head |
| 02/20/2013 | CN202745789U Wellhead dual-seal coiled tubing hanging device |
| 02/20/2013 | CN202745788U Pumping unit wellhead packing box nut and gland hanger |
| 02/20/2013 | CN202745787U Environment-friendly multiple sealing dual-deviation adjustment packing box combination device |
| 02/20/2013 | CN202745786U Oil production wear-resisting anticorrosion seal packing |
| 02/20/2013 | CN202745778U Drilling device |
| 02/20/2013 | CN202745754U Anti-pollution well washing device of oil pumping well |
| 02/20/2013 | CN202745713U Blowout-prevention hanger for bevel type sucker rod |
| 02/20/2013 | CN102937011A Secondary grouting and plugging device and method of regional crack field of gas extraction and drilling group |
| 02/20/2013 | CN102937010A Polish rod sealer |
| 02/20/2013 | CN102937007A Apparatus for gripping a tubular on a drilling rig |
| 02/20/2013 | CN101793146B Method for testing strata of horizontal well |
| 02/20/2013 | CN101353954B Methods and apparatus to apply axial force to a packer in a downhole tool |
| 02/19/2013 | US8377853 Aqueous gels for well bore strengthening |
| 02/19/2013 | US8376366 Sealing gland and methods of use |
| 02/19/2013 | US8376051 System and method for providing additional blowout preventer control redundancy |
| 02/19/2013 | US8376045 Fluid loss additive containing a biodegradable grafted copolymer for a cement composition |
| 02/19/2013 | US8376044 Plug device |
| 02/19/2013 | CA2701410C Wellsite replacement system and method for using same |
| 02/14/2013 | WO2013022728A1 Snap mount annular debris barrier |
| 02/14/2013 | WO2013022724A2 Reorienting annular debris barrier |
| 02/14/2013 | WO2013022720A2 Annular gap debris barrier |
| 02/14/2013 | WO2013022637A2 Permeable material compacting method and apparatus |
| 02/14/2013 | WO2013022551A2 Wellbore pressure control device |
| 02/14/2013 | US20130038021 Annular seal |
| 02/14/2013 | US20130037276 Externally adjustable inflow control device |
| 02/14/2013 | US20130037275 Wellbore Pressure Control Device |
| 02/14/2013 | US20130037273 Method and apparatus for wellbore control |
| 02/14/2013 | US20130037267 System and Method for Improving Zonal Isolation in a Well |