| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/09/2002 | EP1169543A1 Inflatable packer |
| 01/09/2002 | EP1169542A1 Inflatable packer |
| 01/09/2002 | EP1169171A1 Inflation element for a downhole tool, method and shaping tool for pre-disposing the bladder |
| 01/09/2002 | EP1129271A4 Shearing arrangement for subsea umbilicals |
| 01/09/2002 | CN2470534Y Magnetic positioning instrument of single-core bridge plug dropping-feeder |
| 01/09/2002 | CN2470530Y Well-completion sealing device for branch well |
| 01/09/2002 | CN2470529Y Screw sealing structure |
| 01/09/2002 | CN1330205A Temp controlled thermally expansive packer |
| 01/08/2002 | US6336508 Subsea, releasable bop funnel |
| 01/08/2002 | US6336507 Deformed multiple well template and process of use |
| 01/08/2002 | US6336421 Floating spar for supporting production risers |
| 01/08/2002 | CA2038105C Inflatable packing element |
| 01/03/2002 | WO2001065062A3 Use of downhole high pressure gas in a gas-lift well |
| 01/03/2002 | US20020000322 Flow completion system |
| 01/03/2002 | US20020000318 Pumpdown valve plug assembly for liner cementing system |
| 01/03/2002 | US20020000317 Communicating with devices positioned outside a liner in a wellbore |
| 01/03/2002 | US20020000316 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system |
| 01/03/2002 | US20020000315 Flow completion apparatus |
| 01/02/2002 | EP1165934A1 Apparatus for maintaining uniform pressure within an expandable well tool |
| 01/02/2002 | EP1165933A1 Wellbore packer |
| 01/02/2002 | EP0839257B1 Lightweight intervention system |
| 01/02/2002 | CN2469174Y Automatic apparatus for making cement slurry and blocking water for oil well |
| 01/02/2002 | CN2469173Y Double grip packer used in well |
| 01/02/2002 | CN2469172Y Blow-out preventer for borehole log |
| 01/02/2002 | CN2469171Y Casing head of borehole of oil or gas |
| 12/29/2001 | CA2348713A1 Improved ram bore profile for variable bore packer ram in a ram type blowout preventer |
| 12/27/2001 | WO2001098627A1 Compositions and processes for treating subterranean formations |
| 12/27/2001 | WO2001098626A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/27/2001 | WO2001098625A1 A bridge plug for use in a wellbore |
| 12/27/2001 | WO2001098623A1 Radial expansion of tubular members |
| 12/27/2001 | WO2001042721A3 An energy transfer system and a method for providing energy transfer services |
| 12/27/2001 | WO2001033029A3 Sub sea bottom hole assembly change out system and method |
| 12/27/2001 | US20010054507 Tubing hanger system |
| 12/27/2001 | CA2412167A1 A bridge plug for use in a wellbore |
| 12/27/2001 | CA2411241A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/26/2001 | CN2467788Y Cleanable well packer |
| 12/26/2001 | CN2467787Y Self-sealing mud blow-out preventer for well drilling |
| 12/26/2001 | CN2467786Y Antitheft well head cap |
| 12/26/2001 | CN2467785Y Hydraulic compression packing anchoring device |
| 12/23/2001 | CA2351769A1 Well packer |
| 12/21/2001 | CA2351055A1 Cement diverter system for multilateral junctions and method for cementing a junction |
| 12/19/2001 | EP0857248B1 Completion assembly for wellbores |
| 12/19/2001 | EP0851967B1 Single bore riser system |
| 12/19/2001 | CN2466342Y 延时封隔器 Delay packer |
| 12/19/2001 | CN2466341Y Oil production wellhead |
| 12/18/2001 | US6330919 Method of removing wellhead assemblies and cutting assembly for use therein |
| 12/18/2001 | US6330912 Pack-off bushing |
| 12/13/2001 | WO2001094742A1 Subterranean wellbore and formation emulsion sealing compositions |
| 12/13/2001 | WO2001094741A1 Annulus sealing method using eutectic metal and heat induction |
| 12/13/2001 | WO2001094737A1 Pipe handling apparatus and method of landing items at a well location |
| 12/13/2001 | WO2001038692A3 Sealing off openings through the wall of a well tubular |
| 12/13/2001 | US20010050185 Apparatus and method for returning drilling fluid from a subsea wellbore |
| 12/13/2001 | US20010050172 Method and apparatus for stimulation of multiple formation intervals |
| 12/13/2001 | US20010050105 Cementing head |
| 12/12/2001 | EP0890013B1 Monobore riser bore selector |
| 12/12/2001 | CN2464930Y Pneumatic and heat double-driving heat production packer |
| 12/12/2001 | CA2349998A1 Reinforced clay gel |
| 12/11/2001 | US6328111 Live well deployment of electrical submersible pump |
| 12/11/2001 | US6328108 Adjustable sub-tension hanger |
| 12/11/2001 | US6328072 Universal safety device and process for protecting a pipeline |
| 12/09/2001 | CA2710783A1 Pump drive head with stuffing box |
| 12/06/2001 | WO2001092682A1 Sealing assembly with deformable fluid-containing core |
| 12/06/2001 | WO2001092681A1 Method and system for reducing longitudinal fluid flow around a permeable well tubular |
| 12/06/2001 | WO2001051758A3 Subsea completion annulus monitoring and bleed down system |
| 12/06/2001 | WO2000001915A3 Control system for the workover of oil wells |
| 12/06/2001 | US20010047885 Rotating drilling head system with static seals |
| 12/06/2001 | US20010047867 Circulation tool for use in gravel packing of wellbores |
| 12/06/2001 | EP1144794A3 Control system for the workover of oil wells |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159509A1 Single valve for a casing filling and circulating apparatus |
| 12/05/2001 | CN2463535Y Pressure-regulating air control saver |
| 12/05/2001 | CN2463534Y Barrel packing box |
| 12/05/2001 | CN1325478A Wellbore system including a conduit an an expandable device |
| 12/04/2001 | US6325164 Device and method for creating bore-hole branches |
| 12/04/2001 | US6325159 Offshore drilling system |
| 12/04/2001 | US6325158 Method and device for mounting of a seabed installation |
| 12/04/2001 | US6325144 Inflatable packer with feed-thru conduits |
| 11/29/2001 | WO2001090531A1 Method for plugging a well with a resin |
| 11/29/2001 | WO2001061146B1 Method and apparatus for stimulation of multiple formation intervals |
| 11/29/2001 | US20010045711 Water ingress seal for tapered seals |
| 11/29/2001 | US20010045538 Gate valve with flow-through gate |
| 11/29/2001 | US20010045288 Drop ball sub and system of use |
| 11/29/2001 | US20010045286 Small diameter external production riser tieback connector |
| 11/29/2001 | US20010045280 Field development system and associated methods |
| 11/28/2001 | EP1157189A1 Internal riser rotating control head |
| 11/28/2001 | CN2462069Y Packing |
| 11/27/2001 | US6321848 Method of and apparatus for inserting tubing into a live well bore |
| 11/27/2001 | US6321846 Sealing device for use in subsea wells |
| 11/27/2001 | US6321843 Preloading type connector |
| 11/22/2001 | WO2001088336A1 Well reference apparatus and method |
| 11/22/2001 | WO2001088335A1 Dual purpose device |
| 11/22/2001 | WO2001088331A1 Device for installation and flow test of subsea completions |
| 11/22/2001 | US20010043146 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 11/22/2001 | US20010042848 Cartridge gate valve |
| 11/22/2001 | US20010042625 Apparatus for facilitating the connection of tubulars using a top drive |
| 11/22/2001 | US20010042624 Controls bridge for flow completion systems |
| 11/22/2001 | US20010042623 Method and apparatus for cleaning wellbore casing |
| 11/22/2001 | US20010042622 Aqueous lead spacer fluid and aqueous tail spacer fluid for displacing a drilling fluid form an annular space in a well bore with a cement slurry; formulated to minimize mixing between drilling fluid and cement to clean contaminants |
| 11/22/2001 | US20010042618 Internal gate valve for flow completion systems |
| 11/22/2001 | US20010042617 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |