| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/07/2006 | CA2425783C Zero drill completion and production system |
| 02/07/2006 | CA2424608C Drill string shutoff valve |
| 02/07/2006 | CA2374179C Collet cone slip system for releasably securing well tools |
| 02/07/2006 | CA2354269C High load, thin slip system |
| 02/07/2006 | CA2315024C Apparatus and method for injecting treatment fluids into an underground formation |
| 02/07/2006 | CA2211085C Multilateral sealing |
| 02/07/2006 | CA2197962C Apparatus and method for sampling an earth formation through a cased borehole |
| 02/02/2006 | WO2006012164A1 Controlled variable density fluid for wellbore operations |
| 02/02/2006 | WO2006010906A1 Improvements in or relating to subsea drilling |
| 02/02/2006 | WO2005065292A3 Externally activated seal system for wellhead |
| 02/02/2006 | US20060021757 Cross Flow Prevention System and Valve |
| 02/02/2006 | US20060021751 Methods of cementing and cement compositions containing a polymeric cement cohesion additive |
| 02/02/2006 | US20060021749 Shearing sealing ram |
| 02/01/2006 | CN2755274Y Mechanical repeated fracture packer |
| 02/01/2006 | CN2755273Y Super-expand packer |
| 02/01/2006 | CN2755272Y Safety well mouth sealer |
| 02/01/2006 | CN2755271Y Polish rod sealer of pumping well |
| 02/01/2006 | CN2755270Y Blowout-proof operating machine |
| 02/01/2006 | CN1729343A Template and system of templates for drilling and completing offset well bores |
| 02/01/2006 | CN1727635A Method and equipment for equipotential self-balancing pumping unit in cluster wells |
| 01/31/2006 | US6991039 Well operations system |
| 01/31/2006 | CA2234556C Hydraulic setting tool |
| 01/31/2006 | CA2120484C Gravel packing system |
| 01/26/2006 | WO2006008490A1 Methods and systems for cementing wells that lack surface casing |
| 01/26/2006 | WO2006008475A1 Cementing methods and systems for initiating fluid flow with reduced pumping pressure |
| 01/26/2006 | US20060017287 Tie-back connection for subsea well |
| 01/26/2006 | US20060016605 Motion compensator |
| 01/26/2006 | US20060016604 Shoulder ring set on casing hanger trip |
| 01/26/2006 | US20060016602 Placing a composition of a hydraulic cement, water, a gas and a mixture of an alkali salt of an alkyl ether sulfate surfactant, and an alkyl or alkene amidopropyl betaine surfactant, and sodium chloride; either above ground or into a portion of a subterranean formation |
| 01/26/2006 | US20060016601 Foamed cement slurries, additives and methods |
| 01/26/2006 | US20060016600 Methods and systems for cementing wells that lack surface casing |
| 01/26/2006 | US20060016599 Cementing methods and systems for initiating fluid flow with reduced pumping pressure |
| 01/26/2006 | US20060016595 Downhole Measurement System and Method |
| 01/26/2006 | US20060016593 Downhole Measurement System and Method |
| 01/25/2006 | EP1619350A1 A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore |
| 01/25/2006 | EP1618168A2 Drilling fluids with improved shale inhibition and methods of use in subterranean formations |
| 01/25/2006 | CN2753879Y Regulating-free packing leather |
| 01/25/2006 | CN2753875Y 热胀式封隔器 Thermal expansion packer |
| 01/25/2006 | CN2753874Y Oil pipe blow-out preventing cap |
| 01/25/2006 | CN2753873Y Simple self-mounting three-tube-base two-column wellhead platform |
| 01/25/2006 | CN2753872Y Intelligent gas wellhead safety and protection device |
| 01/25/2006 | CN2753871Y Polish drill rod wellhead clamping-rotating device |
| 01/25/2006 | CN2753870Y Dual-rubber sluice gate polish rod sealing device |
| 01/25/2006 | CN2753869Y Snubbing replaceable high-pressure natural gas recovery wellhead sluice valve device |
| 01/24/2006 | US6989355 under-neutralized composition provides a lower interfacial tension compared to the 100 percent neutralized alkylxylene sulfonic acid; method optionally employs suitable co-surfactants, such as alcohols, alcohol ethers, polyalkylene glycols |
| 01/24/2006 | US6989057 Preparing a cement comprising zeolite, cementitious material, and water;placing the cement into the subterranean zone;allowing the cement to set therein |
| 01/24/2006 | US6988557 Self sealing expandable inflatable packers |
| 01/24/2006 | US6988554 Subsea choke control system |
| 01/24/2006 | US6988553 Horizontal spool tree wellhead system and method |
| 01/24/2006 | CA2406259C Downhole tool apparatus with non-metallic components and methods of drilling thereof |
| 01/24/2006 | CA2313835C Cementing casing strings in deep water offshore wells |
| 01/24/2006 | CA2180883C Hydraulic test system mounted with borehole television set for simultaneous observation in front and lateral directions |
| 01/19/2006 | WO2006006927A1 An arrangement for affixing an expandable packer in a hole |
| 01/19/2006 | US20060014649 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes |
| 01/19/2006 | US20060012125 Component part with integrated seal |
| 01/19/2006 | US20060011354 Surge reduction bypass valve |
| 01/19/2006 | US20060011348 Drilling and producing deep water subsea wells |
| 01/19/2006 | US20060011347 Inner riser adjustable hanger and seal assembly |
| 01/19/2006 | US20060011343 Well kill additive, well kill treatment fluid made therefrom, and method of killing a well |
| 01/19/2006 | CA2572658A1 Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry |
| 01/19/2006 | CA2571548A1 An arrangement for affixing an expandable packer in a hole |
| 01/18/2006 | EP1423582B1 Assembly for drilling low pressure formation |
| 01/18/2006 | EP1339946B1 Well treatment process |
| 01/18/2006 | EP1268973B1 Annulus sealing method using eutectic metal and heat induction |
| 01/18/2006 | CN2752430Y Oil layer casing cementing device |
| 01/18/2006 | CN2752429Y Automatic mixing cement paste double-machine double-pump well cementation cement vehicle wondergun system |
| 01/18/2006 | CN2752428Y Water injection well blowout preventing job oil tube internal plugs |
| 01/18/2006 | CN2752424Y Oil layer protecting energy conservation well-flushing device |
| 01/18/2006 | CN1723331A A cable duct device in a swelling packer |
| 01/18/2006 | CN1237145C Cement fly ash profile control agent for plugging of oil and water well |
| 01/17/2006 | US6986390 Expandable packer with anchoring feature |
| 01/17/2006 | CA2367526C Apparatus for maintaining uniform pressure within an expandable well tool |
| 01/17/2006 | CA2279646C Deployment system and apparatus for running bottomhole assemblies in wells, particularly applicable to coiled tubing operations |
| 01/17/2006 | CA2278819C A seal for a longitudinally movable drillstring component |
| 01/12/2006 | WO2006003469A1 Blowout preventer |
| 01/12/2006 | WO2006003389A2 Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
| 01/12/2006 | WO2006003362A1 Improved well servicing tool storage system for subsea well intervention |
| 01/12/2006 | WO2005072430A3 Probe isloation seal pad |
| 01/12/2006 | US20060005973 Coupling and sealing tubulars in a bore |
| 01/12/2006 | US20060005970 System and method for termination of an undersea umbilical |
| 01/12/2006 | US20060005967 Deep well anodes for electrical grounding |
| 01/12/2006 | US20060005966 Methods of reducing the impact of a formate-based drilling fluid comprising an alkaline buffering agent on a cement slurry |
| 01/12/2006 | US20060005963 Downhole plug |
| 01/12/2006 | CA2572866A1 Method and system for inserting a fiber optical sensing cable into an underwater well |
| 01/11/2006 | EP1614669A1 Reactive sealing compostions for hydrocarbon containing subterranean formations |
| 01/11/2006 | EP1613836A1 Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations |
| 01/11/2006 | EP1430200B1 Wellbore system for simultaneous drilling and production |
| 01/11/2006 | EP1332271B1 Transport and supply frame for bop assembly |
| 01/11/2006 | EP1012443B1 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 01/11/2006 | CN2751135Y Improved pumping unit polish rod well mouth seal structure |
| 01/11/2006 | CN2751134Y Thermal recovery casing head |
| 01/11/2006 | CN2751133Y High temperature high pressure polish rod sealer |
| 01/10/2006 | US6985061 Arrangement and method for installing a subsea transformer |
| 01/10/2006 | US6983800 Methods, cement compositions and oil suspensions of powder |
| 01/10/2006 | US6983799 Method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation |
| 01/10/2006 | US6983798 Methods and fluid compositions for depositing and removing filter cake in a well bore |
| 01/10/2006 | CA2348489C Electrical connector system |
| 01/10/2006 | CA2298121C Packing system for boreholes |
| 01/05/2006 | WO2006001974A2 Pressure monitoring of control lines for tool position feedback |
| 01/05/2006 | WO2005108741B1 Tool trap assembly and method |