| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 03/30/2010 | US7686082 Full bore cementable gun system |
| 03/30/2010 | CA2584272C Treatment fluids comprising vitrified shale and methods of using such fluids in subterranean formations |
| 03/30/2010 | CA2536372C Fluid loss control and sealing agent for drilling depleted sand formations |
| 03/30/2010 | CA2469711C Wellbore fluid recovery system & method |
| 03/30/2010 | CA2433586C Thinners for invert emulsions |
| 03/30/2010 | CA2378952C Latex additive for water-based drilling fluids |
| 03/25/2010 | WO2010033343A1 Non-rotation lock screw |
| 03/25/2010 | WO2010032152A1 Single packer system for fluid management in a wellbore |
| 03/25/2010 | WO2010032019A1 Subsea apparatus |
| 03/25/2010 | WO2010031991A1 Downhole seal |
| 03/25/2010 | WO2010031164A1 Rotary seal assembly including a seal ramp in contact with a seal element |
| 03/25/2010 | WO2009156710A3 Centralising mechanism for an inner assembly within a vessel particularly for use in subsea modules |
| 03/25/2010 | US20100072708 Seal assembly |
| 03/25/2010 | US20100072707 Metal encapsulated composite seal |
| 03/25/2010 | US20100071913 Well bore control valve |
| 03/25/2010 | US20100071912 System and method for plugging a downhole wellbore |
| 03/25/2010 | US20100071911 System and Method for Forming a Seal in a Wellbore |
| 03/25/2010 | US20100071908 Downhole backup system and method |
| 03/25/2010 | US20100071907 Accumulator for subsea equipment |
| 03/25/2010 | US20100071896 Downhole apparatus and method |
| 03/25/2010 | CA2737381A1 Subsea apparatus |
| 03/25/2010 | CA2736516A1 Single packer system for fluid management in a wellbore |
| 03/24/2010 | EP2165042A2 Multi-deployable subsea stack system |
| 03/24/2010 | CN201428448Y Deep well grouting decompression device with underground pressure measurement and aboveground throttling control |
| 03/24/2010 | CN201428426Y Rubber plug assembly |
| 03/24/2010 | CN201428425Y Fishable bridge plug |
| 03/24/2010 | CN201428424Y Super power mixer |
| 03/24/2010 | CN201428423Y Down-hole pulse generating device for well cementation |
| 03/24/2010 | CN201428422Y Plug bump indicator for small-size drilling liner cementing |
| 03/24/2010 | CN201428421Y Integrative packer for metal spiral sealing and anchoring |
| 03/24/2010 | CN201428420Y Anti-scale packer |
| 03/24/2010 | CN201428419Y Oil pipe plugging device with cone |
| 03/24/2010 | CN201428418Y Oil pipe plugging device with teeth |
| 03/24/2010 | CN201428417Y Pressure-balancing set packer |
| 03/24/2010 | CN201428416Y Blowout preventer side door hinge with load-bearing rotation and hydraulic connection |
| 03/24/2010 | CN201428415Y Quick pressure testing device of well mouth blowout preventer |
| 03/24/2010 | CN201428414Y Leak-proof device of pumping unit well mouth with pumping rod |
| 03/24/2010 | CN201428413Y Wear-resistant packing of oil well packing box |
| 03/24/2010 | CN201428412Y Novel pneumatic packing box device |
| 03/24/2010 | CN201428411Y Novel pneumatic packing |
| 03/24/2010 | CN201428410Y Automatic corrector |
| 03/24/2010 | CN201428398Y Anti-corrosion sleeve of casting pipe |
| 03/24/2010 | CN101680295A Method and apparatus for fluid migration profiling |
| 03/24/2010 | CN101680283A Method for casing using multiple expanded areas and using at least one inflatable bladder |
| 03/24/2010 | CN101680270A Subsea well control system and method |
| 03/24/2010 | CN101679846A Procedures and compositions for reservoir protection |
| 03/23/2010 | US7683011 for plugging permeable zones; subterranean formations |
| 03/23/2010 | US7681654 Isolating well bore portions for fracturing and the like |
| 03/23/2010 | US7681653 Swelling delay cover for a packer |
| 03/23/2010 | US7681652 Packer setting device for high-hydrostatic applications |
| 03/23/2010 | US7681651 Downhole bridge plug or packer setting assembly and method |
| 03/23/2010 | US7681646 Seal configuration for top drive swivel apparatus and method |
| 03/23/2010 | US7681634 Apparatus for wiping the interior of pipes |
| 03/23/2010 | CA2632442C Degradable material assisted diversion or isolation |
| 03/23/2010 | CA2591158C Retrievable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use |
| 03/23/2010 | CA2480371C Wiper plug with packer |
| 03/23/2010 | CA2465176C Remedial system to flush contaminants from tubing string |
| 03/23/2010 | CA2406748C Self-anchoring cementing wiper plug |
| 03/18/2010 | WO2010029283A1 Casing wiping dart with filtering layer |
| 03/18/2010 | WO2009154901A3 Mineral extraction system having multi-barrier lock screw |
| 03/18/2010 | WO2009147040A3 Assembly for use in a christmas tree |
| 03/18/2010 | WO2009111434A3 Telescopic fracturing isolation sleeve |
| 03/18/2010 | WO2009088502A3 Swellable packer with composite material end rings |
| 03/18/2010 | WO2009014795A3 Annular seal between wellhead and hanger |
| 03/18/2010 | WO2008151052A3 Completion method for fracturing and gravel packing |
| 03/18/2010 | US20100065284 Cable duct device in a swelling packer |
| 03/18/2010 | US20100065276 Method and apparatus for wellbore fluid treatment |
| 03/18/2010 | US20100065273 Methods and materials for zonal isolation |
| 03/18/2010 | US20100065272 Low Permeability Cement Systems for Steam Injection Application |
| 03/17/2010 | EP2163723A1 Method and tool for performing a pilot fluid injection and production test in a well |
| 03/17/2010 | CN201424938Y Double-packer hydraulic-jet fracturing pipe |
| 03/17/2010 | CN201424934Y Hydraulic releasing cement squeezing tool |
| 03/17/2010 | CN101675212A Improved system and method for stimulating multiple production zones in a wellbore |
| 03/17/2010 | CN101675209A Method and apparatus for measuring a parameter within the well with a plug |
| 03/17/2010 | CN101672196A Method for improving amount of drained, extracted and pressure released gas in surface well drilling |
| 03/17/2010 | CN101672172A Simulation fracture plugging test device and test method |
| 03/17/2010 | CN101672171A Novel blowout preventer hydraulic locking device |
| 03/16/2010 | US7677313 Method for controlling water influx into wellbores by blocking high-permeability channels |
| 03/16/2010 | US7677312 Degradable cement compositions containing degrading materials and methods of cementing in wellbores |
| 03/16/2010 | US7677303 Zero-relaxation packer setting lock system |
| 03/12/2010 | CA2639607A1 Cover assembly for flanges and other tubular members |
| 03/11/2010 | WO2010027936A1 Downhole tool with load diverting system and method |
| 03/11/2010 | WO2010027837A1 Optical sensing system for wellhead equipment |
| 03/11/2010 | WO2010027366A1 Wellbore fluids for cement displacement operations |
| 03/11/2010 | WO2010026457A1 Assemblies for the purification of a reservoir or process fluid |
| 03/11/2010 | WO2010026215A2 Narrow well bore |
| 03/11/2010 | WO2010025816A1 An assembly and method for placing a cement plug |
| 03/11/2010 | WO2009123805A3 Methods and devices for isolating wellhead pressure |
| 03/11/2010 | US20100059233 Remote actuation of downhole well tools |
| 03/11/2010 | CA2735916A1 Narrow well bore |
| 03/10/2010 | EP2161405A1 An assembly and method for placing a cement plug |
| 03/10/2010 | EP2161404A2 Underbalanced well drilling and production |
| 03/10/2010 | CN201420533Y Blowout prevention valve |
| 03/10/2010 | CN201420529Y Removable bridge plug |
| 03/10/2010 | CN201420528Y Squeeze cement bridge plug |
| 03/10/2010 | CN201420527Y Staged fracturing bridge plug |
| 03/10/2010 | CN201420526Y Built-in hydraulic cement injector |
| 03/10/2010 | CN201420525Y Deep-swabbing sealing packer rubber of oil well |
| 03/10/2010 | CN201420524Y Deep well fracturing packer |
| 03/10/2010 | CN201420523Y Casing packer |