| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 04/10/2014 | WO2014055089A1 Well tool with dynamic metal-to-metal shape memory material seal |
| 04/10/2014 | WO2014055087A1 Sealing a downhole tool |
| 04/10/2014 | WO2014055077A1 Sliding sleeve well tool with metal-to-metal seal |
| 04/10/2014 | WO2014055068A1 Multiple channel rotary electrical connector |
| 04/10/2014 | WO2014055063A1 System and method for actuating isolation valves in a subterranean well |
| 04/10/2014 | WO2014055062A1 Well tools having energized seals |
| 04/10/2014 | WO2014053358A2 Hydraulic fracturing process and corresponding equipment |
| 04/10/2014 | WO2014053283A1 Tubular element with inclined sealing lips and process for applying it to the wall of a well |
| 04/10/2014 | WO2014053259A1 Downhole cable termination systems |
| 04/10/2014 | WO2014015050A3 Adjustable isolation sleeve assembly for well stimulation through production tubing |
| 04/10/2014 | WO2013166359A3 Seal stem |
| 04/10/2014 | WO2013096361A3 Inflatable packer element for use with a drill bit sub |
| 04/10/2014 | WO2013066817A3 Subsurface release cementing plug |
| 04/10/2014 | WO2013043477A3 Through tubing pumping system with automatically deployable and retractable seal |
| 04/10/2014 | US20140100304 Encapsulated activator and its use to trigger a gelling system by physical means |
| 04/10/2014 | US20140096979 Packer assembly with enhanced sealing layer shape |
| 04/10/2014 | US20140096975 Well System With an Independently Retrievable Tree |
| 04/10/2014 | US20140096963 Flow restrictor for use in a service tool |
| 04/10/2014 | US20140096954 Method of developing subsurface barriers |
| 04/10/2014 | US20140096949 Drill hole plug system |
| 04/10/2014 | US20140096948 Aperture ball drop |
| 04/10/2014 | US20140096651 Well head wrench |
| 04/09/2014 | EP2715053A2 Method of reducing deflection through a rod piston in a subsurface safety valve |
| 04/09/2014 | EP2715050A2 Plugging device |
| 04/09/2014 | EP2715049A2 Improved annular isolation with tension-set external mechanical casing (emc) packer |
| 04/09/2014 | EP2715048A2 Extrusion preventing supporting device |
| 04/09/2014 | EP2715047A1 Improved safety system for dangerous substances |
| 04/09/2014 | EP2715046A1 Method and device for supply of liquids for kill and scale to a subsea well |
| 04/09/2014 | EP2715040A1 Variably configurable wellbore junction assembly |
| 04/09/2014 | EP2714617A1 Method for quantifying cement blend components |
| 04/09/2014 | CN203531882U Eccentric testing well mouth |
| 04/09/2014 | CN203531855U Gas-lift working barrel |
| 04/09/2014 | CN203531841U Combined self-locking rubber plug |
| 04/09/2014 | CN203531840U Vibration cementing tool |
| 04/09/2014 | CN203531839U Automatic grouting float shoe |
| 04/09/2014 | CN203531838U Automatic grouting float collar |
| 04/09/2014 | CN203531837U Suspended packer |
| 04/09/2014 | CN203531836U Reusable compression type rubber sleeve |
| 04/09/2014 | CN203531835U High-temperature high-pressure full-drift-diameter shear pin packer |
| 04/09/2014 | CN203531834U Packer |
| 04/09/2014 | CN203531833U Hydraulic wedging type packer |
| 04/09/2014 | CN203531832U Hole sealing device for underground hydraulic fracturing of coal mine |
| 04/09/2014 | CN203531831U Progressively re-opened packer for finely-divided allocation of oil well |
| 04/09/2014 | CN203531830U Expansion type anti-spraying hole sealing device |
| 04/09/2014 | CN203531829U Protective device of packer rubber tube used for oil-gas well |
| 04/09/2014 | CN203531828U Oil-pressure shrinkage active compensation type rubber core of active sealing type rotary blowout preventer |
| 04/09/2014 | CN203531827U Self-induction-type one-way blowout preventer |
| 04/09/2014 | CN203531826U Simple casing head |
| 04/09/2014 | CN203531825U Built-in simple casing head |
| 04/09/2014 | CN203531824U Ejection-preventing overflow pipe |
| 04/09/2014 | CN203531823U Hydraulic rotary device of decentralized wellhead |
| 04/09/2014 | CN203531822U Auxiliary seal packing box of pumping well polished rod |
| 04/09/2014 | CN203531821U Blowout prevention combined valve type Christmas tree |
| 04/09/2014 | CN203531820U Pressure measurable and pressure relievable pipe plug |
| 04/09/2014 | CN203531793U Safe and rapid operation well head device for offshore oil well |
| 04/09/2014 | CN203525595U Mixing stirrer for two-fluid grouting to orifices |
| 04/09/2014 | CN103717830A Device for insulating a portion of a well |
| 04/09/2014 | CN103717829A Multiple annulus universal monitoring and pressure relief assembly for subsea well completion systems and method of using same |
| 04/09/2014 | CN103717825A Downhole tool and method of use |
| 04/09/2014 | CN103711515A Reusable multistage gasbag mucus gas extraction drilling and hole sealing device |
| 04/09/2014 | CN103711454A Filling process applied to petroleum drilling well |
| 04/09/2014 | CN103711453A Grading cementing device |
| 04/09/2014 | CN103711452A Gel plug packing well control method |
| 04/09/2014 | CN103711451A Oil-well broken rod blowout preventer |
| 04/09/2014 | CN102337858B Tool for grouting in loose coal seam section during drilling |
| 04/09/2014 | CN102268973B Hole sealing device |
| 04/09/2014 | CN101858203B Self-energizing annular seal |
| 04/09/2014 | CN101842546B Flow control system having isolation device for preventing gas interference during downhole liquid removal operations |
| 04/09/2014 | CN101260177B Low molecular weight graft copolymers |
| 04/08/2014 | US8690551 Modular seal bladder for high temperature applications |
| 04/08/2014 | US8689894 Method and composition for zonal isolation of a well |
| 04/08/2014 | US8689892 Wellbore pressure control device |
| 04/08/2014 | US8689891 Ball and dart launcher with parallel axis release |
| 04/08/2014 | US8689888 Method and apparatus for positioning a wellhead member including an overpull indicator |
| 04/08/2014 | US8689874 Visco-elastic surfactant spacers |
| 04/08/2014 | US8689873 Compositions and methods for improving the toughness of set cements |
| 04/08/2014 | US8689872 Methods and compositions for controlling formation fines and reducing proppant flow-back |
| 04/08/2014 | US8689871 Compositions and methods for well completions |
| 04/08/2014 | US8689870 Use of methylhydroxyethyl cellulose as cement additive |
| 04/08/2014 | US8689869 Method for providing thixotrophy to fluids downhole |
| 04/08/2014 | CA2805073C Swelling packer assisted by expander |
| 04/08/2014 | CA2771698C Activating compositions in subterranean zones |
| 04/08/2014 | CA2765193C Swellable packer with enhanced sealing capability |
| 04/08/2014 | CA2765069C Method of drilling using an offshore riser |
| 04/08/2014 | CA2748930C Methods of setting particulate plugs in horizontal well bores using low-rate slurries |
| 04/08/2014 | CA2735916C Narrow well bore |
| 04/08/2014 | CA2708851C Dual stripper assembly for slick cable |
| 04/08/2014 | CA2568945C Low pressure-set packer |
| 04/05/2014 | CA2791585A1 Drill hole plug system |
| 04/04/2014 | CA2829008A1 Method of developing subsurface barriers |
| 04/03/2014 | WO2014052705A1 Settable spacer fluids comprising pumicite and methods of using such fluids in subterranean formations |
| 04/03/2014 | WO2014052230A1 Linear clutch for blowout preventer |
| 04/03/2014 | WO2014052101A1 Compositions and methods for plug cementing |
| 04/03/2014 | WO2014051575A1 Generator driven by drill pipe |
| 04/03/2014 | WO2014048794A1 Christmas tree and method |
| 04/03/2014 | WO2013123040A3 Methods and systems for wiping surfaces when performing subterranean operations |
| 04/03/2014 | US20140090896 Method for Improving High Temperature Rheology in Drilling Fluids |
| 04/03/2014 | US20140090895 Compositions and methods for reducing fluid loss |
| 04/03/2014 | US20140090857 Flow control devices on expandable tubing run through production tubing and into open hole |
| 04/03/2014 | US20140090855 Rotating and reciprocating swivel apparatus and method |