| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 03/24/2009 | CA2556517C Packer having a seal and a support member for the seal |
| 03/24/2009 | CA2409316C Seal assembly for reciprocating shaft |
| 03/21/2009 | CA2603557A1 Tubing hanger apparatus and wellhead assembly for use in oil and gas wellheads |
| 03/19/2009 | WO2009036033A1 Method and system for injecting a slurry downhole |
| 03/19/2009 | WO2009035947A1 Multi-elastomer seal |
| 03/19/2009 | WO2009035922A1 Multi-function indicating tool |
| 03/19/2009 | WO2009035826A1 Expandable metal-to-metal seal |
| 03/19/2009 | WO2009035455A1 Pressure compensator for drill bit |
| 03/19/2009 | WO2008147216A3 Subsea intervention system |
| 03/19/2009 | US20090075848 Environmentally compatible defoaming composition for use in fluids |
| 03/19/2009 | US20090072485 Expandable metal-to-metal seal |
| 03/19/2009 | US20090071722 Wellbore consolidating tool for rotary drilling applications |
| 03/19/2009 | US20090071656 Method of running a tubing hanger and internal tree cap simultaneously |
| 03/19/2009 | US20090071651 system for completing water injector wells |
| 03/19/2009 | US20090071650 Foamed cement compositions comprising oil-swellable particles and methods of use |
| 03/19/2009 | US20090071649 Wellbore fluids for cement displacement operations |
| 03/19/2009 | US20090071644 Apparatus and method for wellbore isolation |
| 03/19/2009 | US20090071641 Expandable metal-to-metal seal |
| 03/19/2009 | CA2712596A1 Pressure compensator for drill bit |
| 03/18/2009 | EP2035656A1 Method for sealing the walls of deep drilled hole |
| 03/18/2009 | EP2035653A1 Packer element for use in a stuffing box |
| 03/18/2009 | CN201209441Y Double-sealing segment |
| 03/18/2009 | CN201209438Y High-pressure turbine flow cementing simulation instrument |
| 03/18/2009 | CN201209430Y Blowout preventing well-washing equipment |
| 03/18/2009 | CN201209423Y Oilfield workover treatment cement squeeze device |
| 03/18/2009 | CN201209422Y Expansion stopper pin for cementing head |
| 03/18/2009 | CN201209421Y Packer for water injection well |
| 03/18/2009 | CN201209420Y Pressure expansion sleeve exterior packer |
| 03/18/2009 | CN201209419Y Retractable protected type packer gum barrel |
| 03/18/2009 | CN201209418Y Sucker rod blow-out preventer at wellhead |
| 03/18/2009 | CN201209417Y Concentric double tube zonal injection wellhead device |
| 03/18/2009 | CN201209416Y Universal packing kit device |
| 03/18/2009 | CN201209415Y Magnetic password bare wellhead oil anti-theft device |
| 03/18/2009 | CN201209414Y Multifunctional shaft mouth device |
| 03/18/2009 | CN201209413Y Oil well anti-theft plug |
| 03/18/2009 | CN201209410Y Anti-spout hydraulic lift device |
| 03/18/2009 | CN101387193A Oil and gas well cementation and completion method |
| 03/18/2009 | CN101387190A Well killing method using absorbent resin to protect low pressure oil and gas reservoir |
| 03/17/2009 | US7503391 Tieback connector |
| 03/17/2009 | US7503388 Circumferentially loaded slip-type overshot retrieval tool |
| 03/12/2009 | WO2009033042A1 Downhole hydraulic valve systems |
| 03/12/2009 | WO2009032589A2 Downhole tubular seal system and method |
| 03/12/2009 | WO2009031901A1 Subsea valve |
| 03/12/2009 | WO2008137447A4 A method and apparatus for subterranean fracturing |
| 03/12/2009 | US20090066030 Annular seal |
| 03/12/2009 | US20090065219 Method and a device for setting a casing |
| 03/12/2009 | US20090065213 Downhole valve assembly, actuation device for a downhole valve assembly and method of controlling fluid flow downhole |
| 03/12/2009 | US20090065209 Multifunctional Nanoparticles for Downhole Formation Treatments |
| 03/12/2009 | US20090065195 Passive Completion Optimization With Fluid Loss Control |
| 03/12/2009 | US20090065193 Multi-Function Indicating Tool |
| 03/12/2009 | US20090065192 Packer |
| 03/12/2009 | US20090065191 Support assembly for downhole tool, downhole tool and method |
| 03/12/2009 | CA2698916A1 Subsea valve |
| 03/11/2009 | CN201206471Y Sealing device for pumping borehole |
| 03/11/2009 | CN201206456Y Cycling head for cementing |
| 03/11/2009 | CN201206455Y Semi-cementing tool |
| 03/11/2009 | CN201206454Y Self-sealing type pump sealing machine of uncoupling oil well pump |
| 03/11/2009 | CN201206453Y Multi-stage portal polish-rod sealing device |
| 03/11/2009 | CN201206452Y Oil and gas well sleeve pipe and oil conduit clogging device for preventing blowout |
| 03/11/2009 | CN201206451Y Double tube valves of oil production process flow |
| 03/11/2009 | CN201206450Y Antifreezing and collection transmitting process device of oil production well special for oilfield |
| 03/11/2009 | CN201206449Y Clip anti-theft lock at wellhead |
| 03/11/2009 | CN201206445Y Multi-stage anchor |
| 03/11/2009 | CN201206444Y Composite tubing for plugging and acidizing construction downhole |
| 03/11/2009 | CN101384793A Pressure monitoring of control lines for tool position feedback |
| 03/11/2009 | CN101382053A Oil well packer |
| 03/11/2009 | CN101382052A Back-off packer |
| 03/11/2009 | CN101382051A Hollow stem water-mixed wellhead device |
| 03/11/2009 | CN100467827C Plug back agent specific to oilfield and manufacturing method thereof |
| 03/11/2009 | CN100467826C Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| 03/10/2009 | US7500526 Downhole tool |
| 03/10/2009 | US7500524 Well operations systems |
| 03/10/2009 | US7500521 Methods of enhancing uniform placement of a resin in a subterranean formation |
| 03/10/2009 | US7500520 Method of cementing well bores |
| 03/10/2009 | US7500518 Top drive swivel apparatus and method |
| 03/10/2009 | US7500516 System, method, and apparatus for accessing outlets in a two-stage diverter spool assembly |
| 03/10/2009 | CA2639418A1 Pump assembly |
| 03/10/2009 | CA2504247C A method and apparatus for creating a cemented lateral junction system |
| 03/10/2009 | CA2496956C Reverse circulation drilling blowout preventor |
| 03/10/2009 | CA2466549C Colloidal and colloidal-like systems in aqueous, clay-based fluids |
| 03/07/2009 | CA2639342A1 Degradable downhole check valve |
| 03/05/2009 | WO2009029152A1 Bearing assembly retaining apparatus and well drilling equipment comprising same |
| 03/05/2009 | WO2009029150A1 Tapered bearing assembly cover plate and well drilling equipment comprising same |
| 03/05/2009 | WO2009029145A1 Heat exchanger system and well drilling equipment comprising same |
| 03/05/2009 | WO2009029144A1 Bearing assembly inner barrel and well drilling equipment comprising same |
| 03/05/2009 | WO2009029143A1 Stripper rubber pot mounting structure and well drilling equipment comprising same |
| 03/05/2009 | WO2009027662A2 Sealing assembly |
| 03/05/2009 | WO2009027658A1 Sealing assembly |
| 03/05/2009 | WO2008154486A3 Multi-deployable subsea stack system |
| 03/05/2009 | WO2008151314A3 Interventionless composite packer |
| 03/05/2009 | US20090058017 Downhole tubular seal system and method |
| 03/05/2009 | US20090056956 Packing Element Booster |
| 03/05/2009 | US20090056955 Burst Plug for a Downhole Fluid Passage |
| 03/05/2009 | US20090056954 High angle water flood kickover tool |
| 03/05/2009 | US20090056952 Downhole Tool |
| 03/05/2009 | US20090056946 Well remediation using downhole slurry |
| 03/05/2009 | US20090056934 Interventionless multi-position frac tool |
| 03/05/2009 | CA2697466A1 Sealing assembly |
| 03/04/2009 | EP2031181A2 Packing element booster |
| 03/04/2009 | CN201202439Y High pressure short radius omnidirectional right-angle movable elbow |