| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 12/18/2012 | CA2576138C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 12/18/2012 | CA2573526C Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes |
| 12/13/2012 | WO2012171042A2 Expandable seal with conforming ribs |
| 12/13/2012 | WO2012170811A1 Improved blowout preventer |
| 12/13/2012 | WO2012170412A2 Force sensing device and methods for preparing and uses thereof |
| 12/13/2012 | WO2012170382A1 Method for strengthening a wellbore of a well |
| 12/13/2012 | WO2012170152A2 Subsea pressure relief devices and methods |
| 12/13/2012 | WO2012170029A1 Reducing trips in well operations |
| 12/13/2012 | WO2012167809A1 Separator for mechanically separating an actuator and an operator |
| 12/13/2012 | WO2012167808A1 Locking device |
| 12/13/2012 | WO2012167358A1 Inner string cementing tool |
| 12/13/2012 | WO2012134639A3 Esp with offset laterally loaded bearings |
| 12/13/2012 | WO2012122089A3 Expandable isolation packer |
| 12/13/2012 | WO2012046060A3 Subsea wellhead including monitoring apparatus |
| 12/13/2012 | WO2012046058A3 Subsea wellhead |
| 12/13/2012 | WO2011144512A3 Mechanical bending weak link |
| 12/13/2012 | WO2011128613A3 Subsea wellhead with segmented fatigue reduction sleeve |
| 12/13/2012 | WO2011128612A3 Insertion of a packoff into a wellhead |
| 12/13/2012 | WO2011128611A3 Subsea wellhead providing controlled access to a casing annulus |
| 12/13/2012 | WO2011117576A3 Laminar phase ring for fluid transport applications |
| 12/13/2012 | US20120312560 Sealing apparatus and method for forming a seal in a subterranean wellbore |
| 12/13/2012 | US20120312559 Expandable seal with conforming ribs |
| 12/13/2012 | US20120312557 Sleeved ball seat |
| 12/13/2012 | US20120312556 Seal |
| 12/13/2012 | US20120312551 Method and Apparatus for Running Casing in a Wellbore with a Fluid Driven Rotatable Shoe |
| 12/13/2012 | US20120312548 In-bore blow out preventer method and apparatus |
| 12/13/2012 | US20120312545 Systems and methods for co-production of geothermal energy and fluids |
| 12/13/2012 | US20120312542 Expandable solid load ring for casing hanger |
| 12/13/2012 | US20120312535 Cementing Composition Comprising within Un-Reacted Cement |
| 12/13/2012 | US20120312526 Swelling Packer and Method of Construction |
| 12/13/2012 | US20120312525 Stuffing box leak containment apparatus |
| 12/13/2012 | US20120312524 Stuffing box leak containment apparatus |
| 12/13/2012 | CA2838042A1 Improved blowout preventer |
| 12/13/2012 | CA2836765A1 Inner string cementing tool |
| 12/13/2012 | CA2791489A1 Improved unibody lubricator with externally threaded nipple |
| 12/12/2012 | EP2532830A2 Velocity Strings |
| 12/12/2012 | EP2531751A1 Unitized bi-directional seal assembly |
| 12/12/2012 | EP2531693A2 Packer deployed formation sensor |
| 12/12/2012 | EP2531692A2 Flow control device and flow control method |
| 12/12/2012 | CN202597348U Pressing nut fixing clip of packing box of pumping unit |
| 12/12/2012 | CN202596774U Connecting sleeve assembly and blowout preventer |
| 12/12/2012 | CN202596697U Fracturing wellhead ball catching device |
| 12/12/2012 | CN202596693U Stepless differential adjusting closed water tap plug |
| 12/12/2012 | CN202596680U Fixed type oil fishing machine |
| 12/12/2012 | CN202596679U Fully automatic oil discharger |
| 12/12/2012 | CN202596661U High temperature and high pressure resistant quick drillable composite bridge plug |
| 12/12/2012 | CN202596660U Cylindrical kneading type hole sealing bag |
| 12/12/2012 | CN202596659U Cylinder hole-sealing bag |
| 12/12/2012 | CN202596658U Packer for plugging water for fishable insert pipe switch |
| 12/12/2012 | CN202596657U Expanding packer |
| 12/12/2012 | CN202596656U Open hole packer with double insurance locking mechanism |
| 12/12/2012 | CN202596655U Efficient blowout-control end cap for water injection well test |
| 12/12/2012 | CN202596654U Pumping well sliding sleeve type leakage-proof tool |
| 12/12/2012 | CN202596653U Pre-filling delayed cured filler well completion packer |
| 12/12/2012 | CN202596652U Recoverable hydraulic packer |
| 12/12/2012 | CN202596651U Fusing type tubing plug of eccentricity separate injection well |
| 12/12/2012 | CN202596650U Suspension-type support frame for operation rod of blowout preventer |
| 12/12/2012 | CN202596649U Oil extraction well mouth converter |
| 12/12/2012 | CN202596648U Casting head-tubing head cover with control valve |
| 12/12/2012 | CN202596647U Sleeve-pumping two-stage pneumatic blowout-preventing box |
| 12/12/2012 | CN202596646U Anti-eccentric-wearing polish rod centering device for rod-pumped well packing |
| 12/12/2012 | CN202596645U Anti-theft device for oil-field well |
| 12/12/2012 | CN202596644U Self-compensation sealing packing |
| 12/12/2012 | CN202596643U Electric pump wellhead blowout wrecking and leakage stopping device |
| 12/12/2012 | CN202596642U Circulation kill-job casing pipe punching device |
| 12/12/2012 | CN202596641U Oil, water, gas well operation string anti-jacking device |
| 12/12/2012 | CN202596640U Pressure measurement exhaust-control well plugging device |
| 12/12/2012 | CN202596624U Casing suspender with metallic sealing and metallic framework type rubber sealing |
| 12/12/2012 | CN102822443A Subsea well intervention module |
| 12/12/2012 | CN102817597A Three-layer insertion pipe mechanical water exploration and plugging method and water exploration and plugging pipe column |
| 12/12/2012 | CN102817594A Drainage gas recovery method and device of horizontal well |
| 12/12/2012 | CN102817581A Anti-breakage packer |
| 12/12/2012 | CN102817580A Water injection packer |
| 12/12/2012 | CN102817579A Valve controlled type hydraulic packer |
| 12/12/2012 | CN102817578A Packer with high sealing performance |
| 12/12/2012 | CN102817577A Double-cylinder hydraulic packer |
| 12/12/2012 | CN102817576A Durable hydraulic packer |
| 12/12/2012 | CN102817575A Downhole blow-out preventer with automatic controlling and anchoring function |
| 12/12/2012 | CN102817574A Packer-anchoring device |
| 12/12/2012 | CN102817573A Seal with bellows style nose ring |
| 12/12/2012 | CN102817572A Expandable solid load ring for casing hanger |
| 12/12/2012 | CN102817571A Blowout-prevention tool string of belt pressure energy storage well repairing machine |
| 12/12/2012 | CN102817570A Packing sealing device for oilfield wellhead |
| 12/12/2012 | CN102817561A Novel petroleum casing joint |
| 12/12/2012 | CN102080552B Underground double liquid grouting process and underground double liquid grouting machine thereof |
| 12/12/2012 | CN101899961B Controllable friction type anti-spraying plug inside pipeline and anti-spraying method |
| 12/12/2012 | CN101424172B Installation and guide device for underwater basal disc for blowout preventer |
| 12/11/2012 | US8327945 Remotely operated drill pipe valve |
| 12/11/2012 | US8327943 Wellhead isolation protection sleeve |
| 12/11/2012 | US8327939 Settable compositions comprising cement kiln dust and rice husk ash and methods of use |
| 12/11/2012 | US8327938 Epoxy acid based biodegradable set retarder for a cement composition |
| 12/11/2012 | US8327937 Equipment for remote launching of cementing plugs |
| 12/11/2012 | US8327933 Arrangement and method for sending and/or sealing cement at a liner hanger |
| 12/11/2012 | US8327931 Multi-component disappearing tripping ball and method for making the same |
| 12/11/2012 | US8327930 Equipment for remote launching of cementing plugs |
| 12/11/2012 | US8327929 Support assembly for downhole tool, downhole tool and method |
| 12/11/2012 | CA2694074C Hydrocarbon sweep into horizontal transverse fractured wells |
| 12/08/2012 | CA2827412A1 Stuffing box leak containment apparatus |
| 12/08/2012 | CA2742446A1 Stuffing box leak containment apparatus |
| 12/07/2012 | CA2779186A1 Sealing apparatus and method for forming a seal in a subterranean wellbore |