| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/13/2005 | WO2005095751A1 Modular design for downhole ecd-management devices and related methods |
| 10/13/2005 | WO2005095534A2 Fluid loss additives for cement slurries |
| 10/13/2005 | US20050226751 Water pressure system with pressure tank installed within well casing of well |
| 10/13/2005 | US20050224228 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 10/13/2005 | US20050224226 Force Transfer Apparatus to Assist Release of Loaded Member |
| 10/13/2005 | US20050224225 Apparatus for expanding a tubular member |
| 10/12/2005 | EP1179116B1 Recovery of production fluids from an oil or gas well |
| 10/12/2005 | CN2732991Y Throwing ball self catcher type setting ball seat |
| 10/12/2005 | CN2732990Y Blanking plug for hollow water distributor |
| 10/12/2005 | CN2732989Y Down-hole by-pass valve type lost circulation material running tool used in oil field |
| 10/12/2005 | CN2732988Y Oil filled self-lubricating packing box |
| 10/12/2005 | CN2732987Y Wellhead sealer for pumping well |
| 10/12/2005 | CN2732986Y Universal regulation wellhead packing box |
| 10/12/2005 | CN1222679C Downhole device for controlling fluid flow in a well |
| 10/12/2005 | CN1222678C Drilling and completion system for multilateral wells |
| 10/11/2005 | US6953092 Apparatus and method for free-fall installation of an underwater wellhead |
| 10/11/2005 | US6953085 Well pressure activated pack-off head |
| 10/11/2005 | US6953084 Actuator for well-head valve or other similar applications and system incorporating same |
| 10/06/2005 | WO2005093206A1 One trip perforating, cementing, and sand management apparatus and method |
| 10/06/2005 | WO2005093205A1 Inflatable sealing assembly and method for sealing off an inside of a flow carrier |
| 10/06/2005 | WO2005093202A1 Improved casing comprising stress-absorbing materials and associated methods of use |
| 10/06/2005 | US20050220645 Submersible Pumping System and Method for Boosting Subsea Production Flow |
| 10/06/2005 | US20050217869 High pressure expandable packer |
| 10/06/2005 | US20050217868 Casing-engaging well tree isolation tool and method of use |
| 10/06/2005 | US20050217861 Apparatus to allow a coiled tubing tractor to traverse a horizontal wellbore |
| 10/06/2005 | US20050217860 Electrical submersible pump actuated packer |
| 10/06/2005 | US20050217858 Apparatus and method of drilling with casing |
| 10/06/2005 | US20050217857 Subsea pumping module system and installation method |
| 10/06/2005 | US20050217852 Method of sealing subterranean zones |
| 10/06/2005 | US20050217851 Method for stimulation of liquid flow in a well |
| 10/06/2005 | US20050217850 Sealing Mechanism for a Subterranean Well |
| 10/06/2005 | US20050217849 System and Method to Seal by Bringing the Wall of a Wellbore into Sealing Contact with a Tubing |
| 10/06/2005 | US20050217845 Tubing hanger running tool and subsea test tree control system |
| 10/06/2005 | US20050217844 Autonomous well intervention system |
| 10/06/2005 | CA2554849A1 Inflatable sealing assembly and method for sealing off an inside of a flow carrier |
| 10/05/2005 | EP1582274A2 Procedures and equipment for profiling and jointing of pipes |
| 10/05/2005 | EP1581720A1 Seal cup for a wellbore tool and method |
| 10/05/2005 | EP1581718A1 Anchoring device for a wellbore tool |
| 10/05/2005 | EP1497528A4 Split carrier annulus seal assembly for wellhead systems |
| 10/05/2005 | CN2731091Y Dropped three-layer pressing crack pipe column |
| 10/05/2005 | CN2731090Y Hydraulic oil-pipe blocking device for blowout-prevent work of water injection well |
| 10/05/2005 | CN2731082Y Packer for sand-flushing, wax-scrapping and drunkeness-checking |
| 10/05/2005 | CN2731081Y Integrated water distribution packer for controlling seal deflection of double-body valve |
| 10/05/2005 | CN2731080Y Unfreezing device for downhole work |
| 10/05/2005 | CN2731079Y Wearing-resisting smooth rod seal device for oil pumping well head |
| 10/05/2005 | CN2731078Y Christmas tree well head without dismounting hole closing device |
| 10/05/2005 | CN2731077Y High-pressure fracturing well head device |
| 10/05/2005 | CN2731076Y Well head device for oil production |
| 10/05/2005 | CN1676873A High temperature high pressure oil well cement paste coagulation instrument and its coagulation time measuring method |
| 10/05/2005 | CN1676868A Oil well water-injection oil-extracting technique |
| 10/05/2005 | CN1676867A Dense well distance surface integrated well cementation leakage-preventing method |
| 10/05/2005 | CN1676866A Cluster well integrating-drill surface leakage-proof blow-by preventing method |
| 10/05/2005 | CN1676486A Low temperature early-strength coagulant agent |
| 10/05/2005 | CA2503476A1 Sealing mechanism for a subterranean well |
| 10/04/2005 | US6951250 pumping sealant composition comprising partially polymerized furfuryl alcohol/aldehyde into well, curing, hardening when it reaches annulus; isolates waste chemicals from subterranean zone positioned adjacent sealant composition |
| 10/04/2005 | US6951246 Self-anchoring cementing wiper plug |
| 10/04/2005 | CA2356148C Profile formation on a tube |
| 10/04/2005 | CA2250228C Monobore riser bore selector |
| 09/30/2005 | CA2502800A1 Enhancement of flow rates through porous media |
| 09/29/2005 | WO2005090745A1 Multizone stimulation using wax balls |
| 09/29/2005 | WO2005090743A1 System for sealing an annular space in a wellbore |
| 09/29/2005 | WO2005090742A1 Dissolvable downhole tools |
| 09/29/2005 | WO2005090741A1 System for sealing an annular space in a wellbore |
| 09/29/2005 | WO2005090740A1 Spear type blow out preventer |
| 09/29/2005 | WO2005090259A2 Cement compositions containing degradable materials and methods of cementing in subterranean formations |
| 09/29/2005 | US20050211446 System and method for installing a liner in a borehole |
| 09/29/2005 | US20050211445 Casing comprising stress-absorbing materials and associated methods of use |
| 09/29/2005 | US20050211443 Articulated drillstring entry apparatus and method |
| 09/29/2005 | US20050211442 System and method for low-pressure well completion |
| 09/29/2005 | US20050211435 Method of forming temporary blocking gel containing guar derivative |
| 09/29/2005 | US20050211431 Cementing manifold assembly |
| 09/29/2005 | US20050211430 Multi-purpose coiled tubing handling system |
| 09/29/2005 | US20050211428 Pump rod clamp and blowout preventer |
| 09/29/2005 | CA2559921A1 Cement compositions containing degradable materials and methods of cementing in subterranean formations |
| 09/29/2005 | CA2557200A1 System for sealing an annular space in a wellbore |
| 09/28/2005 | CN2729301Y Underground tool for conveying cement pack |
| 09/28/2005 | CN2729300Y Integral eccentric water distributor and packer controlled by integral valve |
| 09/28/2005 | CN2729299Y Releaser packer for oil production by layer |
| 09/28/2005 | CN2729298Y Shut-in well tubular column |
| 09/28/2005 | CN2729296Y Well cementation float hoop, shoe of controlling butterfly valve by pressure bar system |
| 09/28/2005 | CN1673309A Expanding flow-gel profile-controlling and plugging agent |
| 09/28/2005 | CN1220649C Low-density cement slurry |
| 09/27/2005 | US6948917 Valving system for a downhole hydraulically actuated pump |
| 09/27/2005 | US6948565 Slip spool and method of using same |
| 09/27/2005 | CA2396457C Cementing manifold assembly |
| 09/27/2005 | CA2376445C Wiper plug delivery apparatus |
| 09/27/2005 | CA2201384C Apparatus for the remote measurement of physical parameters |
| 09/22/2005 | WO2005088065A1 Apparatus and methods for sealing voids in a subterranean formation |
| 09/22/2005 | WO2005088064A1 Annular isolators for tubulars in wellbores |
| 09/22/2005 | WO2005001232A3 Determination of thermal properties of a formation |
| 09/22/2005 | US20050206162 Connection device |
| 09/22/2005 | US20050205266 Biodegradable downhole tools |
| 09/22/2005 | US20050205265 One-time use composite tool formed of fibers and a biodegradable resin |
| 09/22/2005 | US20050205264 Dissolvable downhole tools |
| 09/22/2005 | US20050205262 Subsea production systems |
| 09/22/2005 | US20050205258 Cement compositions containing degradable materials and methods of cementing in subterranean formations |
| 09/22/2005 | US20050205253 Apparatus for expanding a tubular member |
| 09/21/2005 | EP1456501A4 Method and apparatus for replacing bop with gate valve |
| 09/21/2005 | CN2727389Y Gravitational toggle oil drainer |
| 09/21/2005 | CN2727385Y Thermal cleaning oil well packer with three functions |