| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 10/10/2001 | EP1141518A1 Downhole sealing for production tubing |
| 10/10/2001 | EP1141517A1 Drilling method |
| 10/10/2001 | EP1141515A1 Method and apparatus for expanding a liner patch |
| 10/10/2001 | CN2453127Y 地锚 Anchor |
| 10/10/2001 | CN2453126Y Hydraulic bearing type cement cap cementing well equipment |
| 10/10/2001 | CN2453125Y Water injection packer |
| 10/10/2001 | CN2453124Y Self-anchoring type compressing sealing means |
| 10/10/2001 | CN2453123Y Theft-proof wellhead device |
| 10/10/2001 | CN2453122Y Integrated type circulation casing head hanger |
| 10/09/2001 | US6298767 Undersea control and actuation system |
| 10/09/2001 | CA2155918C Integrated well drilling and evaluation |
| 10/04/2001 | WO2001073325A2 Gate valve |
| 10/04/2001 | WO2001073260A2 Multiport gate valve assembly |
| 10/04/2001 | WO2001073259A1 Tubing hanger with annulus bore |
| 10/04/2001 | WO2001073258A1 Gate valve with flow-through gate |
| 10/04/2001 | WO2001073257A1 Tubing head seal assembly |
| 10/04/2001 | WO2001073256A1 Tubing hanger system with gate valve |
| 10/04/2001 | WO2001073255A1 Internal gate valve for flow completion systems |
| 10/04/2001 | WO2001073254A2 Coupling means for controls bridge through a tubing head |
| 10/04/2001 | US20010025658 Multiport gate valve assembly |
| 10/04/2001 | EP1138872A1 Well tool actuators and method |
| 10/04/2001 | EP0620892B1 Case cementing method and system |
| 10/03/2001 | CN2451726Y Flexible sleeve plug |
| 10/03/2001 | CN2451725Y Non-releasing flushing compression packer |
| 10/03/2001 | CN2451724Y Flushing packer |
| 10/02/2001 | US6296225 Ram bore profile for variable bore packer ram in a ram type blowout preventer |
| 10/02/2001 | US6296057 Method of maintaining the integrity of a seal-forming sheath, in particular a well cementing sheath |
| 10/02/2001 | US6296056 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 10/02/2001 | US6296054 Steep pitch helix packer |
| 10/02/2001 | CA2210698C Unitary diversionary-tubing hanger and energizable rod seal |
| 10/02/2001 | CA2180758C Wellbore sand control method |
| 09/27/2001 | WO2001071156A1 A method of providing an internal circumferential shoulder in a cylindrical passageway |
| 09/27/2001 | WO2001071155A1 Communicating with devices positioned outside a liner in a wellbore |
| 09/27/2001 | WO2001071151A1 Template and system of templates for drilling and completing offsite well bores |
| 09/27/2001 | WO2001070646A1 Cementing compositions and application of these compositions to cementing oil wells or the like |
| 09/27/2001 | US20010023765 Lubricator for underbalanced drilling |
| 09/27/2001 | US20010023764 Lubricator for underbalanced drilling |
| 09/27/2001 | US20010023614 Monitoring of downhole parameters and tools utilizing fiber optics |
| 09/26/2001 | CN2450382Y Bridge plug capable of fishing for oil well |
| 09/26/2001 | CN2450381Y Gate type circulating head |
| 09/26/2001 | CN2450380Y Wellhead crude recovering device |
| 09/26/2001 | CN2450379Y Multifunctional polish rod sealing device for well head of pumping well |
| 09/25/2001 | US6293347 Sleeve and method of use for preventing polish rod scoring by a pump jack carrier structure |
| 09/25/2001 | US6293345 Apparatus for subsea wells including valve passageway in the wall of the wellhead housing for access to the annulus |
| 09/25/2001 | US6293343 External tieback connector and method for tying back riser to subsea wellhead |
| 09/20/2001 | WO2001069036A1 Downhole surge pressure reduction and filtering apparatus |
| 09/20/2001 | WO2001069034A2 Wellbore circulation system, kelly bushing, kelly and tong |
| 09/20/2001 | WO2001018357B1 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 09/19/2001 | EP1133617A1 Wellbore system including a conduit and an expandable device |
| 09/19/2001 | CN2448922Y Sealed flow collector for annular water detector |
| 09/19/2001 | CN2448916Y Thermal production packer |
| 09/19/2001 | CN2448915Y Blow-resistant hanging device for sucker rod |
| 09/19/2001 | CN1313927A Grouting pipe equipment and method of grouting using the same for an underground water well |
| 09/18/2001 | US6290231 Diverter flow line seal |
| 09/18/2001 | US6289994 Bidirectional temperature and pressure effect compensator for inflatable elements |
| 09/18/2001 | US6289993 Blowout preventer protector and setting tool |
| 09/18/2001 | US6289992 Variable pressure pump through nozzle |
| 09/13/2001 | WO2001066990A1 Plug for tubulars |
| 09/13/2001 | WO2001066906A1 Packer system |
| 09/13/2001 | WO2001066487A1 Multifunctional additive to cement slurries |
| 09/13/2001 | WO2001066275A2 Composite particles and methods of their use |
| 09/13/2001 | US20010020675 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/13/2001 | US20010020533 Method for drilling and completing oil wells with small intermediate diameters |
| 09/13/2001 | US20010020532 Hanging liners by pipe expansion |
| 09/12/2001 | EP1132572A2 Data line deployment in hydrocarbon wells |
| 09/12/2001 | EP1132568A2 Sealing lateral downhole |
| 09/12/2001 | EP1132566A2 Double shearing rams for ram type blowout preventer |
| 09/12/2001 | EP1132565A2 Method and apparatus for downhole ball drop |
| 09/12/2001 | EP1132354A1 Multifunctional additive to cement slurries |
| 09/12/2001 | CN2447518Y Once-through packing mechanism for packer |
| 09/11/2001 | US6286603 Packing system and method for boreholes |
| 09/11/2001 | US6286597 Shoe track saver and method of use |
| 09/11/2001 | US6286593 Oilwell leak containment apparatus for a completed oilwell |
| 09/11/2001 | CA2066299C Cased glory hole system |
| 09/10/2001 | CA2340508A1 Connecting casing to lateral casing using thermoset plastic molding |
| 09/09/2001 | CA2339707A1 Downhole ball drop tool |
| 09/07/2001 | WO2001065067A1 Controllable production well packer |
| 09/07/2001 | WO2001065062A2 Use of downhole high pressure gas in a gas-lift well |
| 09/07/2001 | CA2331579A1 Double shearing rams for ram type blowout preventer |
| 09/06/2001 | US20010018977 Selectively set and unset packers |
| 09/06/2001 | US20010018972 Injecting the interactive chemicals used to form gels at reservoir temperatures independently and sequentially so they only contact at desired depth, preventing premature gelation; using specified partition coefficients |
| 09/05/2001 | EP1130074A1 Filtrate reducing additive and well fluid containg it |
| 09/05/2001 | EP1129271A1 Shearing arrangement for subsea umbilicals |
| 09/05/2001 | CN2446278Y Hydraulic expanding sand-proofing packer |
| 09/04/2001 | US6283213 Tandem spacer fluid system and method for positioning a cement slurry in a wellbore annulus |
| 09/04/2001 | US6283211 Method of patching downhole casing |
| 09/04/2001 | US6283210 Proactive conformance for oil or gas wells |
| 09/04/2001 | US6283202 Apparatus for dispensing a chemical additive into a well |
| 09/04/2001 | CA2218917C A simplified sealing and anchoring device for a well tool |
| 09/04/2001 | CA2037681C Equipment for remote launching of cementing plugs into sub-sea drilled wells |
| 08/30/2001 | WO2001063089A1 Sequential hydraulic control system for use in subterranean well |
| 08/30/2001 | WO2001063088A1 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection |
| 08/30/2001 | US20010017210 Liner setting tool |
| 08/30/2001 | US20010017209 Method of maintaining the integrity of a seal-forming sheath, in particular a well cementing sheath |
| 08/30/2001 | CA2399225A1 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection |
| 08/29/2001 | EP1127211A1 Universal cementing plug |
| 08/29/2001 | EP1127208A2 Remotely controlled assembly for wellbore flow diverter and method for handling |
| 08/29/2001 | CN2445095Y Hydraulic packer |
| 08/29/2001 | CN2445094Y Double-sealed heat production packer |
| 08/29/2001 | CN2445093Y Petroleum pumping packer |