| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 08/22/2013 | WO2012112926A3 Method for strengthening a wellbore |
| 08/22/2013 | US20130214183 Collapsible casing device for use in controlling flow |
| 08/22/2013 | US20130213672 Downhole Apparatus with a Swellable Support Structure |
| 08/22/2013 | US20130213671 Casing hanger lockdown sleeve |
| 08/22/2013 | US20130213663 Surface multiple well |
| 08/22/2013 | US20130213661 Wear bushing for locking to a wellhead |
| 08/22/2013 | US20130213660 ROV Retrievable Regulator Module |
| 08/22/2013 | US20130213654 Cementing whipstock apparatus and methods |
| 08/22/2013 | US20130213647 Surface Wellbore Operating Equipment Utilizing MEMS Sensors |
| 08/22/2013 | US20130213646 Apparatus and methods for wellbore completion |
| 08/22/2013 | US20130213642 Consolidating Spacer Fluids and Methods of Use |
| 08/22/2013 | US20130213638 Methods of Using Nano-Particles In Wellbore Operations |
| 08/22/2013 | US20130213635 Hydraulic well packer |
| 08/22/2013 | US20130213512 Closing of Underwater Oil Spills With The Help of Magnetic Powders |
| 08/21/2013 | EP2628892A1 Subsea wellhead protection structure, canopy and installation |
| 08/21/2013 | EP2627863A1 Guide post |
| 08/21/2013 | EP2627860A2 Marine subsea free-standing riser systems and methods |
| 08/21/2013 | EP2627859A2 Marine subsea assemblies |
| 08/21/2013 | EP2627857A2 Method and apparatus for isolating and treating discrete zones within a wellbore |
| 08/21/2013 | CN203145998U Mine gas pumping and draining hole packer |
| 08/21/2013 | CN203145996U Downward wet hole drainage |
| 08/21/2013 | CN203145926U Device for rapidly measuring coal layer gas pressure in downward super-deep drill hole |
| 08/21/2013 | CN203145925U Device for quickly measuring coal seam gas pressure by upward remote drilling |
| 08/21/2013 | CN203145891U Automatic timing ash feeding device |
| 08/21/2013 | CN203145890U Pressure relief type packer |
| 08/21/2013 | CN203145889U Large-drift-diameter cable passing packer capable of expanding when meeting water |
| 08/21/2013 | CN203145888U Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube |
| 08/21/2013 | CN203145887U Oil-pipe blanking plug |
| 08/21/2013 | CN203145886U Dragging type hydraulic releasing packer |
| 08/21/2013 | CN203145885U Oil extraction well mouth seal defensive packing box |
| 08/21/2013 | CN203145884U Metal secondary sealing device for well opening sleeve |
| 08/21/2013 | CN203145883U Polished rod sealing device |
| 08/21/2013 | CN103261583A Detecting and correcting unintended fluid flow between subterranean zones |
| 08/21/2013 | CN103261577A Well completion |
| 08/21/2013 | CN103261573A Wellbore apparatus and methods for zonal isolation and flow control |
| 08/21/2013 | CN103261572A Extending lines through, and preventing extrusion of, seal elements of packer assemblies |
| 08/21/2013 | CN103261571A Stable subsea electric power transmission to run subsea high speed motors |
| 08/21/2013 | CN103261568A Well intervention |
| 08/21/2013 | CN103256072A Anti-spray device for assisting high-pressure water jet slotting |
| 08/21/2013 | CN103256020A Well cementation buffer |
| 08/21/2013 | CN103256019A Horizontal well dragging crushing high-pressure packer |
| 08/21/2013 | CN103256018A Top-pressure-type blocking device |
| 08/21/2013 | CN103256017A High-pressure water injection packer |
| 08/21/2013 | CN102146786B Polymer flooding and water flooding double-function external adjusting stopper |
| 08/21/2013 | CN102071899B Gradually unpacked washable well packer |
| 08/21/2013 | CA2806898A1 Apparatus and methods for wellbore completion |
| 08/20/2013 | US8513167 Methods of using polysaccharide based cement additives |
| 08/20/2013 | US8511394 Wellbore fluid treatment process and installation |
| 08/20/2013 | US8511393 Slip hanger assembly and actuator |
| 08/20/2013 | US8511383 Bottom hole assembly |
| 08/20/2013 | US8511368 Geothermal heat exchanger |
| 08/20/2013 | CA2713396C Formation tester with fluid mobility enhancement to enable use of a low volume flow line for fluid sample collection and method of use thereof |
| 08/20/2013 | CA2559140C A method and device for establishing an underground well |
| 08/16/2013 | CA2768538A1 Fill material dispensing method and apparatus |
| 08/15/2013 | WO2013119814A1 Improved cementing tool |
| 08/15/2013 | WO2013119286A2 Lip seal |
| 08/15/2013 | WO2013119255A1 Debris anti-compaction system for ball valves |
| 08/15/2013 | WO2013117202A1 Retrievable flow module unit |
| 08/15/2013 | WO2013116920A1 Novel nanoparticle-containing drilling fluids to mitigate fluid loss |
| 08/15/2013 | WO2013058661A3 Device for recirculating grease/sealing oil in risers |
| 08/15/2013 | WO2013045553A3 A downhole injection tool |
| 08/15/2013 | WO2013012931A3 Apparatus and method of zonal isolation |
| 08/15/2013 | WO2012151060A3 Adjustment and restraint system for a subsea flex joint |
| 08/15/2013 | WO2012121866A3 Method and apparatus for sealing a wellbore |
| 08/15/2013 | WO2012116079A3 Subsea conductor anchor |
| 08/15/2013 | WO2012099841A3 Method for capping a well in the event of subsea blowout preventer failure |
| 08/15/2013 | US20130207349 Lip Seal |
| 08/15/2013 | US20130206427 Seal assembly and method |
| 08/15/2013 | US20130206425 Selectively Corrodible Downhole Article And Method Of Use |
| 08/15/2013 | US20130206419 Blowout preventer and launcher sytem |
| 08/15/2013 | US20130206418 Method and system for performing well operations |
| 08/15/2013 | US20130206410 Expandable structures for wellbore deployment |
| 08/14/2013 | EP2625381A1 Actuation dart for wellbore operations, wellbore treatment apparatus and method |
| 08/14/2013 | EP2625376A1 Wellbore packer back-up ring assembly, packer and method |
| 08/14/2013 | EP2625375A1 An annular barrier |
| 08/14/2013 | EP2625374A2 Fill up and circulating tool with well control feature |
| 08/14/2013 | EP2625373A2 Subsea wellhead |
| 08/14/2013 | EP2625372A2 Subsea wellhead including monitoring apparatus |
| 08/14/2013 | CN203130037U Ball seat type rubber plug system |
| 08/14/2013 | CN203130036U Nonmetal drillable bridge plug |
| 08/14/2013 | CN203130035U Composite material slip |
| 08/14/2013 | CN203130034U Annular pressuring rubber plug used for well cementation |
| 08/14/2013 | CN203130033U Mechanical hole sealing type pouring device |
| 08/14/2013 | CN203130032U Self-reinforcing inner self-closing pressure-controlling deep hole-sealing grouter |
| 08/14/2013 | CN203130031U High-pressure hydraulic pressing crack packer |
| 08/14/2013 | CN203130030U Coal bed pressing and penetrating hole packer |
| 08/14/2013 | CN203130029U Plugging device for main borehole of five-stage branch well |
| 08/14/2013 | CN203130028U Double-plugging hole packer |
| 08/14/2013 | CN203130027U Safety protection and dust catching device for drilling construction |
| 08/14/2013 | CN203130026U External blowout preventer of orifice pipe |
| 08/14/2013 | CN203130025U Blowout preventer for orifice |
| 08/14/2013 | CN203130024U Blowout preventing device for orifice |
| 08/14/2013 | CN203130023U Novel well temperature leakage detection blowout prevention and flow-guiding device |
| 08/14/2013 | CN203130022U Blowout preventer for preventing blowout of crude oil |
| 08/14/2013 | CN203130021U Blowout preventer |
| 08/14/2013 | CN203130020U Hydraulic drive device for wellhead blowout prevention system |
| 08/14/2013 | CN203130019U Rod pumped well polish rod sealing device enabling users to replace packing conveniently |
| 08/14/2013 | CN203130018U Rear-mounted embedded orifice pipe hole packer |
| 08/14/2013 | CN203130017U Device for preventing crude oil from blowout |
| 08/14/2013 | CN203130016U Offset-preventing biconical seal rubber block |