| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/06/2014 | WO2014022549A1 Remedial technique for maintaining well casing |
| 02/06/2014 | WO2014022384A1 Dual barrier open water well completion systems |
| 02/06/2014 | WO2014022105A1 Methods and systems for treating a wellbore |
| 02/06/2014 | WO2014021816A1 Stacked piston safety valves and related methods |
| 02/06/2014 | US20140034337 Capping stack and method for controlling a wellbore |
| 02/06/2014 | US20140034336 Methods and Systems for Treating a Wellbore |
| 02/06/2014 | US20140034335 Downhole Apparatus with a Swellable Support Structure |
| 02/06/2014 | US20140034333 Lifting device and method |
| 02/06/2014 | US20140034328 Bore protector |
| 02/06/2014 | US20140034314 Mitigation of Contamination Effects in Set-Delayed Cement Compositions Comprising Pumice and Hydrated Lime |
| 02/06/2014 | US20140034313 Cement Set Activators for Cement Compositions and Associated Methods |
| 02/06/2014 | US20140034312 Methods and Devices for Casing and Cementing Well Bores |
| 02/06/2014 | US20140034311 Methods and apparatus for wellbore construction and completion |
| 02/06/2014 | US20140034301 Cementing Plug Tracking Using Distributed Strain Sensing |
| 02/06/2014 | US20140034293 Contoured ram bore on type u blowout preventer |
| 02/06/2014 | US20140034291 Method of and apparatus for completing a well |
| 02/06/2014 | US20140034143 Hydraulic Fluid Compositions |
| 02/06/2014 | CA2876217A1 Methods and systems for treating a wellbore |
| 02/05/2014 | EP2691600A2 Apparatus and method for completing wells using slurry containing a shape-memory material particles |
| 02/05/2014 | CN203420684U Novel tubular column for oil-well operation |
| 02/05/2014 | CN203420668U Grading hoop tool for well cementation |
| 02/05/2014 | CN203420667U Dual-seal compression type fracture packer |
| 02/05/2014 | CN203420666U Lifting-lowering blowout-control release packer after perforation |
| 02/05/2014 | CN203420665U Double-acting compression type packer |
| 02/05/2014 | CN203420664U Motive seal device used for expansion pipe |
| 02/05/2014 | CN203420663U Water injection well packer capable of being unsealed level by level |
| 02/05/2014 | CN203420662U Small-diameter oil pipe plug |
| 02/05/2014 | CN203420661U Moveable hole-sealing device |
| 02/05/2014 | CN203420660U Suction preventing device for wellhead of oil well |
| 02/05/2014 | CN103562489A Borehole seal, backup and method |
| 02/05/2014 | CN103556986A Measuring method for displacement efficiency of simulated well cementation cementing |
| 02/05/2014 | CN103556970A Combined self-lock rubber plug |
| 02/05/2014 | CN103556969A Self-expandable packer |
| 02/05/2014 | CN103556644A Basement bottom plate dewatering well mouth plugging casing and construction method |
| 02/05/2014 | CN102505921B Water searching pipe column of open-hole horizontal well |
| 02/05/2014 | CN102465679B Sucker rod blowout prevention device |
| 02/04/2014 | US8640777 Expandable anchoring mechanism |
| 02/04/2014 | US8640775 Multi-deployable subsea stack system |
| 02/04/2014 | US8640770 End ring for use with swell packers |
| 02/04/2014 | US8640768 Sintered polycrystalline diamond tubular members |
| 02/03/2014 | CA2873986A1 Ball sealer for hydrocarbon resource collection as well as production method therefor and downhole treatment method using same |
| 01/30/2014 | WO2014017921A1 Plug |
| 01/30/2014 | WO2014016617A2 Sealing apparatus and method |
| 01/30/2014 | WO2014016615A2 Seal element |
| 01/30/2014 | WO2014016614A1 Sealing apparatus and method |
| 01/30/2014 | WO2014016536A1 Flow restrictor |
| 01/30/2014 | WO2014016408A2 Plugging device |
| 01/30/2014 | WO2014015903A1 Subsea hydraulic power unit |
| 01/30/2014 | WO2014015469A1 Liner hanger top packer |
| 01/30/2014 | WO2014015468A1 Lift-pull-type packer |
| 01/30/2014 | WO2013063378A3 Well completion method to allow dual monitoring of reservoir saturation and pressure |
| 01/30/2014 | WO2013060472A3 Method and device for connecting a new pipe to a counter piece of a natural gas or crude oil source which has been damaged in a deep-sea area |
| 01/30/2014 | US20140027129 Annular sealing in a rotating control device |
| 01/30/2014 | US20140027127 Downhole tools having non-toxic degradable elements |
| 01/30/2014 | US20140027116 Polymer nanocomposite, process for making and use of same |
| 01/30/2014 | US20140027115 Pipe-in-Pipe Shunt Tube Assembly |
| 01/30/2014 | CA2784163A1 Apparatuses for sealing against a well tubular |
| 01/29/2014 | EP2690250A1 Running tool with independent housing rotation sleeve |
| 01/29/2014 | EP2690249A1 Intervention workover control systems |
| 01/29/2014 | EP2689100A2 Apparatus and method for positioning of a fluidized plugging material in an oil well or gas well |
| 01/29/2014 | EP2689098A2 Sealing assembly |
| 01/29/2014 | EP2689097A2 Blow out preventer |
| 01/29/2014 | EP2689096A2 Sliding stage cementing tool |
| 01/29/2014 | EP2522997B1 Monitoring hydrocarbon fluid flow |
| 01/29/2014 | EP2511471B1 Controlling a tool |
| 01/29/2014 | CN203412547U Well-washing switch of packer |
| 01/29/2014 | CN203412545U Self-communicating type double-process screen pipe top well cementation device |
| 01/29/2014 | CN203412544U 封隔器 Packer |
| 01/29/2014 | CN203412543U Wellhead blowout control and antifouling device |
| 01/29/2014 | CN203412542U Sleeve suspension device |
| 01/29/2014 | CN203412541U Wellhead evacuation device for oil well |
| 01/29/2014 | CN203412540U Polish rod sealer |
| 01/29/2014 | CN203412539U Wellhead thermal expansion compensator |
| 01/29/2014 | CN203412526U Device for converting medium sealed in under-pressure operating well |
| 01/29/2014 | CN203412522U Multi-stage water plugging string of bridge plug |
| 01/29/2014 | CN103541702A Method for enhancing oil recovery of low permeability sandstone reservoir |
| 01/29/2014 | CN103541684A 自动灌浆装置 Automatic filling device |
| 01/29/2014 | CN103541683A Method for leaking stoppage by pre-arranging plugging gel and tightly adding cement paste |
| 01/29/2014 | CN103541682A Packer |
| 01/29/2014 | CN103541681A High-temperature-resistant high-pressure-resistant cross-class compression type seal component for bushes and barefoot wells |
| 01/29/2014 | CN103541680A Expansion expanding and sealing rubber sleeve |
| 01/29/2014 | CN103541679A Method for sealing underground hydraulic fracture drilled hole of coal mine in combined manner |
| 01/29/2014 | CN103541678A Superconduction heat pipe condensation method oil well selective water plugging technique |
| 01/29/2014 | CN103541677A Multipurpose annular preventer |
| 01/29/2014 | CN103541663A Special three-hole tube for plugging device and use method thereof |
| 01/29/2014 | CN103540301A Self-repairing latex well cementation cement slurry as well as preparation and application thereof |
| 01/29/2014 | CN102516959B Magnetorheological isolating liquid and application thereof |
| 01/29/2014 | CN101688439B Christmas tree with internally positioned flowmeter |
| 01/28/2014 | US8636074 Elongated sealing member for downhole tool |
| 01/28/2014 | US8636072 Wellhead assembly having seal assembly with axial restraint |
| 01/28/2014 | US8636068 Method of reducing corrosion in cement |
| 01/28/2014 | US8636067 Method and apparatus for performing cementing operations on top drive rigs |
| 01/28/2014 | US8636063 Cement slurry monitoring |
| 01/28/2014 | US8636059 Downhole circulating valve having a seal plug |
| 01/28/2014 | US8636055 Controlled aperture ball drop |
| 01/28/2014 | CA2749138C Methods and apparatus for a downhole tool |
| 01/28/2014 | CA2637301C Wellbore method and apparatus for completion, production and injection |
| 01/28/2014 | CA2637040C Wellbore system using shunt tubes |
| 01/25/2014 | CA2820821A1 Method and apparatus for hydraulic fracturing |
| 01/23/2014 | WO2014015104A2 Asymmetrical button for ram-type blowout preventers |