| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/23/2005 | EP1303681A4 Well management system |
| 02/23/2005 | EP1272734A4 New and improved method and apparatus for cleaning wellbore casing |
| 02/23/2005 | CN2680847Y Slurry sealing arrangement for casing drill |
| 02/23/2005 | CN2680846Y Waterpower releasing tool |
| 02/23/2005 | CN1584282A Water-block laminated pressure-measuring separator |
| 02/23/2005 | CN1584281A Self-aligning polish rod sealer |
| 02/22/2005 | US6857634 BOP assembly with metal inserts |
| 02/22/2005 | US6857486 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 02/22/2005 | US6857475 Apparatus and methods for flow control gravel pack |
| 02/22/2005 | US6857473 Method of coupling a tubular member to a preexisting structure |
| 02/22/2005 | US6857471 Split base plate assembly for multiple completion wellheads |
| 02/22/2005 | CA2476450A1 Ultra low density cementitious slurries for use in cementing of oil and gas wells |
| 02/22/2005 | CA2306306C Casing clamp |
| 02/22/2005 | CA2167491C Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 02/17/2005 | WO2005014971A1 A method of suspending, completing and working over a well |
| 02/17/2005 | WO2004083589A3 Restricting fluid passage and novel materials therefor |
| 02/17/2005 | WO2004022903A3 Top drive swivel apparatus and method |
| 02/17/2005 | US20050038127 Storable water-silica suspensions and methods |
| 02/17/2005 | US20050034876 Expandable packer with anchoring feature |
| 02/17/2005 | US20050034870 Secondary release for wellhead connector |
| 02/17/2005 | US20050034867 Subterranean fluids and methods of cementing in subterranean formations |
| 02/17/2005 | US20050034863 Apparatus and method of detecting interfaces between well fluids |
| 02/17/2005 | US20050034853 Top drive swivel apparatus and method |
| 02/17/2005 | CA2533805A1 A method of suspending, completing and working over a well |
| 02/17/2005 | CA2532686A1 Compositions and methods for preventing coagulation of water-in-oil emulsion polymers in aqueous saline well treating fluids |
| 02/16/2005 | EP1506343A1 System for treating an underground formation |
| 02/16/2005 | EP1155218B1 Selective zonal isolation within a slotted liner |
| 02/16/2005 | CN2679353Y Composite window expansion longitudinal bellows sealer of well |
| 02/16/2005 | CN2679352Y Capping packing means |
| 02/16/2005 | CN2679351Y Side-door sealing device of ram type blowout preventer |
| 02/16/2005 | CN2679350Y Wellhead of downhole motor drilling |
| 02/16/2005 | CN1580483A Method for hot changing master control valve for wellhead device |
| 02/15/2005 | US6854532 Subsea wellbore drilling system for reducing bottom hole pressure |
| 02/15/2005 | US6854522 Annular isolators for expandable tubulars in wellbores |
| 02/15/2005 | US6854521 System and method for creating a fluid seal between production tubing and well casing |
| 02/15/2005 | US6854515 Wellhead hydraulic drive unit |
| 02/15/2005 | CA2274256C Apparatus for launching at least one plug into a tubular in a wellbore |
| 02/15/2005 | CA2192013C Nonelastomeric sealing element |
| 02/10/2005 | WO2005012687A1 Drilling method |
| 02/10/2005 | WO2005012686A1 System for sealing a space in a wellbore |
| 02/10/2005 | US20050028990 Packing tool |
| 02/10/2005 | US20050028989 Expandable packer with anchoring feature |
| 02/10/2005 | US20050028988 Radial expansion of tubular members |
| 02/10/2005 | US20050028985 Apparatus and methods for preventing or limiting rotation of cementing plugs |
| 02/10/2005 | US20050028984 Recovery of production fluids from an oil or gas well |
| 02/10/2005 | US20050028980 Method of suspending, completing and working over a well |
| 02/10/2005 | US20050028972 Inflation tool with real-time temperature and pressure probes |
| 02/10/2005 | CA2533455A1 Drilling method |
| 02/09/2005 | EP1505251A2 Drilling method |
| 02/09/2005 | CN2677602Y Self-cementation circulation diverticulum |
| 02/09/2005 | CN2677601Y Well cementation casing levitron |
| 02/09/2005 | CN2677600Y 聚氨脂密封件 Polyurethane Seals |
| 02/09/2005 | CN2677599Y Automatic regulation wellhead sealing device |
| 02/09/2005 | CN2677598Y 强磁保护器 Magnetic protection |
| 02/09/2005 | CN2677597Y Multi-steering anti-partial wear packing box |
| 02/09/2005 | CN2677595Y Lifting hydraulic cartridge container hanger |
| 02/09/2005 | CN1576514A Downhole sampling apparatus and method |
| 02/08/2005 | US6851478 Y-body Christmas tree for use with coil tubing |
| 02/08/2005 | US6851475 Apparatus and methods for separating and joining tubulars in a wellbore |
| 02/08/2005 | CA2314061C Reservoir management system and method |
| 02/08/2005 | CA2311521C Inflatable packer inflation verification system |
| 02/08/2005 | CA2074954C Device for the assembly or disassembly of probes in process pipes, tanks, etc |
| 02/03/2005 | WO2005010319A1 Subsea tubing hanger lockdown device |
| 02/03/2005 | WO2004067883A3 Control pod latchdown mechanism |
| 02/03/2005 | WO2004067594A3 Polyether polyesters having anionic functionality |
| 02/03/2005 | US20050023866 Non-rotational casing hanger and seal assembly running tool |
| 02/03/2005 | US20050023004 Alternative packer setting method |
| 02/03/2005 | US20050023003 Annular isolators for tubulars in wellbores |
| 02/03/2005 | US20050023000 Cement float |
| 02/03/2005 | US20050022996 Temperature compensation of deepwater accumulators |
| 02/03/2005 | US20050022994 Well chemical treatment utilizing plunger lift delivery system |
| 02/02/2005 | EP1503031A1 Packing tool |
| 02/02/2005 | EP1230467B1 Two-part connector for fluid carrying conduits |
| 02/02/2005 | CN2675855Y Sliding sleeve type spoiler |
| 02/02/2005 | CN2675854Y Bidirectional oil layer protector |
| 02/02/2005 | CN2675853Y Integrated two-stage packer |
| 02/02/2005 | CN2675852Y Compression type spraying prevention switch for oil pumping well |
| 02/02/2005 | CN2675851Y Leakage stopper with externally placed bag |
| 02/02/2005 | CN2675850Y Multifunctional high pressure well sealer |
| 02/02/2005 | CN2675849Y Pumping well polish rod sealer |
| 02/02/2005 | CN2675848Y Asymmetrical wear prevention well mouth sealer |
| 02/02/2005 | CN2675847Y Oil well mouth sealer |
| 02/02/2005 | CN2675843Y Centralizing type adjustable tie-back sleeve |
| 02/02/2005 | CN1575370A Device for performing a downhole operation |
| 02/01/2005 | US6848511 Plug and ball seat assembly |
| 02/01/2005 | US6848505 Alternative method to cementing casing and liners |
| 01/30/2005 | CA2473017A1 Well chemical treatment utilizing plunger lift deliver system |
| 01/27/2005 | WO2005008025A1 Subsea tubing hanger assembly for an oil or gas well |
| 01/27/2005 | WO2005008016A2 Improve inflatable packer |
| 01/27/2005 | WO2004079155A3 Methods and apparatus for handling and drilling with tubulars or casing |
| 01/27/2005 | US20050016740 Seal |
| 01/27/2005 | US20050016736 Backpressure adapter pin and methods of use |
| 01/27/2005 | US20050016727 [downhole sampling apparatus and method] |
| 01/26/2005 | CN2674080Y High pressure recovery bridge plug |
| 01/26/2005 | CN2674079Y Expanding type water injection well packer |
| 01/26/2005 | CN2674078Y 注水封隔器 Injection packer |
| 01/26/2005 | CN2674077Y Simple equipment for placing casing for low oil prodn well |
| 01/26/2005 | CN1570344A Lower rubber plug indicator for cementing-head equipment |
| 01/25/2005 | US6845959 Quick release blowout preventer bonnet |
| 01/25/2005 | US6845958 Wireline valve actuator |