| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 05/09/2013 | US20130112410 Subsurface Release Cementing Plug |
| 05/09/2013 | US20130112408 Ported packer |
| 05/09/2013 | US20130112405 Consolidating Spacer Fluids and Methods of Use |
| 05/09/2013 | US20130112398 Modified packer with non-extrusion ring |
| 05/09/2013 | US20130112396 Seal for a Wellbore |
| 05/09/2013 | CA2758181A1 Blowout preventor actuation tool |
| 05/08/2013 | EP2588710A2 Mitigating leaks in production tubulars |
| 05/08/2013 | EP2588709A2 Blowout preventer monitoring system and method of using same |
| 05/08/2013 | EP2588708A1 Wellbore control device |
| 05/08/2013 | CN202926283U Novel packer |
| 05/08/2013 | CN202926282U Automatic-tracking universal polish rod packing box |
| 05/08/2013 | CN202926281U Antitheft clamp connecting device of oil production well |
| 05/08/2013 | CN202926280U Deviation adjusting device of polished rod sealing device |
| 05/08/2013 | CN202926279U Energy-saving environmental-friendly packing box |
| 05/08/2013 | CN202926278U Lubricating device for anti-dry-grinding anti-oil-leaking wellhead polish rod sealer |
| 05/08/2013 | CN202926277U Hollow pipe packing box |
| 05/08/2013 | CN202926276U Novel seal |
| 05/08/2013 | CN202926275U Grouting capsule-type hole packer with multiple seal sections |
| 05/08/2013 | CN202926274U Hydraulic orifice sealer specially used for orifice-closed grouting method |
| 05/08/2013 | CN202926273U Lubrication type packing box |
| 05/08/2013 | CN202926267U Expansion type falling object protective device used for suspension device |
| 05/08/2013 | CN202922743U Anti-settling device for underground water slurry of coal mine |
| 05/08/2013 | CN103097648A Blowout preventer with shearing blades and method |
| 05/08/2013 | CN103097646A Self-releasing plug for use in a subterranean well |
| 05/08/2013 | CN103093564A Oil extraction wellhead oil intelligent anti-theft alarm device |
| 05/08/2013 | CN103089208A Oil extraction system for valve type heavy oil extraction pump |
| 05/08/2013 | CN103089196A Combination processing method of bridge plug seat sealing and sand blast perforating conducted by oil tube and device thereof |
| 05/08/2013 | CN103089195A Old well plugging method for constructing underground gas storage by depleted oil-gas reservoir |
| 05/08/2013 | CN103089194A Method for completing well by cementing top of expandable screen |
| 05/08/2013 | CN103089193A Tail pipe completion method by plugging expandable casing on top of screen pipe |
| 05/08/2013 | CN103089192A Horizontal position adjusting structure for casing head clamping device |
| 05/08/2013 | CN103089191A Oilwell sleeve pressure test plug sealing structure |
| 05/08/2013 | CN103089190A Hydraulic well sealing device |
| 05/08/2013 | CN103089189A Self-operated energy-saving anticorrosion and wearproof sealing device |
| 05/08/2013 | CN103089188A Fracturing-extraction well head device with combined sealing, directional separation and abrasion resistance |
| 05/08/2013 | CN103089187A Well head device with combined sealing, double-tube gas injection and remote control |
| 05/08/2013 | CN103089183A Double bellmouth type expansion sleeve packing tool and operating method thereof |
| 05/08/2013 | CN103089172A Drilling system special for coal mine underground tunnel water control |
| 05/08/2013 | CN103089161A Elevation hole drilling reverse slip casting sleeve and sleeve fixing technology |
| 05/08/2013 | CN103089145A Down-hole hammer power head of rotary drilling rig and rotary drilling rig |
| 05/08/2013 | CN103087699A Sand-carrying profile control agent composition of fracture-cave type oil deposit and profile control method of profile control agent |
| 05/08/2013 | CN102121361B Multi-phase underground injector |
| 05/08/2013 | CN102071908B Anti-blowout control valve |
| 05/08/2013 | CN101523010B Revised cure cycle for annular packing units |
| 05/08/2013 | CA2833992A1 Ported packer |
| 05/08/2013 | CA2783904A1 Settable well tool and slips |
| 05/08/2013 | CA2757950A1 Ported packer |
| 05/07/2013 | US8435930 Low density cementitious compositions using lime kiln dust |
| 05/07/2013 | US8435344 Biodegradable retarder for cementing applications |
| 05/07/2013 | US8434560 Tubing hanger with integral annulus shutoff valve |
| 05/07/2013 | US8434553 Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations |
| 05/07/2013 | US8434552 Squeeze composition for restoring isolation |
| 05/07/2013 | US8434550 Well treatment device, method, and system |
| 05/02/2013 | WO2013062884A1 Pressure cycle independent indexer and methods |
| 05/02/2013 | WO2013062566A1 Downhole packer assembly having a selective fluid bypass and method for use thereof |
| 05/02/2013 | WO2013062421A1 Method and device for extending lifetime of a wellhead |
| 05/02/2013 | WO2013060849A1 Sealing material for annular barriers |
| 05/02/2013 | WO2013028799A3 Downhole tool and method of use |
| 05/02/2013 | WO2013028383A3 Chemical injection system |
| 05/02/2013 | WO2013028342A3 Completing underwater wells |
| 05/02/2013 | WO2013019721A3 Recovery valve |
| 05/02/2013 | WO2011153011A3 Compact cable suspended pumping system for lubricator deployment |
| 05/02/2013 | US20130105171 Device and Method for Stabilization of a Wellhead and Also Use of a Suction Substructure for Support of a Wellhead |
| 05/02/2013 | US20130105162 Compositions and methods for improving the toughness of set cements |
| 05/02/2013 | US20130105161 Delayed, Swellable Particles for Prevention of Fluid Migration Through Damaged Cement Sheaths |
| 05/02/2013 | US20130105160 Compositions and Methods for Well Treatment |
| 05/02/2013 | US20130105158 Method and device for sealing a well by means of a core plug, plug for implementing the method, and extractor tool designed to remove it |
| 05/02/2013 | US20130105153 System and method for converting class ii hydrate reservoirs |
| 05/02/2013 | US20130105144 Method and Apparatus for Catching Darts and Other Dropped Objects |
| 05/02/2013 | US20130105143 Segmented Seal Ring and Support of Same |
| 05/02/2013 | US20130105142 Stuffing box leak containment apparatus |
| 05/02/2013 | US20130105141 Stuffing Box for a Fluid Production Well, and Associated Surface Assembly |
| 05/02/2013 | DE102011116953A1 Verfahren, Absperr- und Anschlussvorrichtungen zum Anbau in der Tiefsee zwecks Ausflussstoppen bzw. Anschließen an havarierten Erdgas- bzw. Erdölförderrohrstutzen, Präventer und Bohrgestänge Procedures, isolation and connection devices for cultivation in the deep sea for the purpose of stopping or discharge connection to natural gas or oil production damaged pipes, drill pipe and Präventer |
| 05/02/2013 | CA2852152A1 Sealing material for annular barriers |
| 05/02/2013 | CA2849516A1 Well completion method to allow dual monitoring of reservoir saturation and pressure |
| 05/01/2013 | EP2586963A1 Sealing material for annular barriers |
| 05/01/2013 | EP2586103A1 Subsea container electrical through connector |
| 05/01/2013 | EP2585819A1 Measurement of slurry density |
| 05/01/2013 | EP2585673A2 Device for sealing the end face of a tube from which fluid flows |
| 05/01/2013 | EP2585671A2 Oilfield equipment and related apparatus and method |
| 05/01/2013 | CN202914126U Support device for hydraulic fracturing hole-sealing capsule |
| 05/01/2013 | CN202914085U Solid particle solidifying simulator |
| 05/01/2013 | CN202914059U Steam injection allocation technology pipe of steam assisted gravity drainage (SAGD) steam injection well |
| 05/01/2013 | CN202914058U Concentric double oil pipe steam injection distribution process pipe column of steam assisted gravity drainage (SAGD) steam injection well |
| 05/01/2013 | CN202914034U Self-expanding ball seat |
| 05/01/2013 | CN202914029U Novel anti-rotation cementing rubber stopper |
| 05/01/2013 | CN202914028U Tail pipe well cementation cement head |
| 05/01/2013 | CN202914027U Salvage type drilling-free plug hydraulic grading cementing device and special spear thereof |
| 05/01/2013 | CN202914026U Well cementation cement head |
| 05/01/2013 | CN202914025U 三次采油注入控制装置 EOR injection control device |
| 05/01/2013 | CN202914024U 浮箍 Float collar |
| 05/01/2013 | CN202914023U Automatic adjustment type ash injecting device |
| 05/01/2013 | CN202914022U Expanding type water injection packer |
| 05/01/2013 | CN202914021U Expanding packer for high-pressure water injection |
| 05/01/2013 | CN202914020U Packer |
| 05/01/2013 | CN202914019U Packer seat sealing mechanism for coiled tubing |
| 05/01/2013 | CN202914018U Pressure test anti-spraying multifunctional plug |
| 05/01/2013 | CN202914017U Ball type damper for gas well |
| 05/01/2013 | CN202914016U Oil pipe plugger |
| 05/01/2013 | CN202914015U Underbalanced simple wellhead device |