| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 01/07/2004 | CN2597659Y Tail pipe ball trap locking device |
| 01/07/2004 | CN2597658Y Hand simple blowout preventer |
| 01/07/2004 | CN1465845A Novel packer |
| 01/06/2004 | US6672396 Subsea well apparatus |
| 01/06/2004 | US6672390 Systems and methods for constructing subsea production wells |
| 01/06/2004 | US6672384 Plug-dropping container for releasing a plug into a wellbore |
| 01/06/2004 | US6672371 Earth heat exchange system |
| 01/06/2004 | CA2299398C Assembly and process for drilling and completing multiple wells |
| 01/06/2004 | CA2212198C Well stabilization tools and methods |
| 01/06/2004 | CA2210245C Inflation packer method and apparatus |
| 01/06/2004 | CA2202728C Cementitious well drilling fluids and methods |
| 01/06/2004 | CA2200257C Downhole tool apparatus and method of limiting packer element extrusion |
| 01/06/2004 | CA2117085C Downhole activated system for perforating a wellbore |
| 01/06/2004 | CA2055404C Clamp and clamp supporting apparatus |
| 01/02/2004 | EP1373766A2 Metal-to-metal seal with soft metal insert |
| 01/02/2004 | EP1373682A1 Power connection to and/or control of wellhead trees |
| 01/02/2004 | EP1373681A1 A method for pressure- and flow-preventive fixing of pipes in a well |
| 01/02/2004 | EP1373679A1 Liquid separation device |
| 01/01/2004 | US20040000404 Production tubing joint |
| 12/31/2003 | WO2004001190A2 Subsea well apparatus |
| 12/31/2003 | WO2004001183A1 Methods of sealing expandable pipe in well bores and sealing compositions |
| 12/31/2003 | CN2596000Y Cement vehicle used for well cementation |
| 12/31/2003 | CN2595999Y Needle and taper type steam-filling and hot oil prodn. packer |
| 12/31/2003 | CN2595998Y Long packing element type packer |
| 12/31/2003 | CN2595997Y Water filling packer |
| 12/31/2003 | CN2595996Y Means for blocking-up oil pipe |
| 12/31/2003 | CN2595995Y Light wt. blowout preventer used for oil-testing and well-maintaining |
| 12/31/2003 | CN2595994Y Pressure-bearing type grease-filling apparatus |
| 12/31/2003 | CN2595993Y Single pipe device for oil-field well-head |
| 12/31/2003 | CN2595992Y Well-head thermal stress compensator for hot injection and hot prodn. of thickened oil recovery |
| 12/31/2003 | CN1464173A Modified tannin extract gel water-plugging technique adapted for high temperature and high salt oil deposit |
| 12/31/2003 | CN1132890C High-water water blocking mixture and its preparing process and application |
| 12/30/2003 | US6668938 Cup packer |
| 12/30/2003 | US6668928 Resilient cement |
| 12/30/2003 | US6668923 Positive indication system for well annulus cement displacement |
| 12/30/2003 | US6668919 Casing hanger system with capture feature |
| 12/30/2003 | US6668684 Tong for wellbore operations |
| 12/30/2003 | CA2232014C Simplified xmas tree using sub-sea test tree |
| 12/30/2003 | CA2176669C Downhole tool apparatus with non-metallic packer element retaining shoes |
| 12/30/2003 | CA2087928C Hanger assembly |
| 12/25/2003 | US20030234120 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 12/25/2003 | US20030234109 Subsea well apparatus |
| 12/25/2003 | US20030234102 Methods of sealing expandable pipe in well bores and sealing compositions |
| 12/25/2003 | US20030234101 Drilling method |
| 12/24/2003 | WO2003106808A1 Plug concealment and diversion tool |
| 12/24/2003 | WO2003106130A2 Collapsible expansion cone |
| 12/24/2003 | CN2594454Y Mud mixer |
| 12/24/2003 | CN2594453Y Water distributing packer |
| 12/24/2003 | CN2594452Y Casing protective packer |
| 12/24/2003 | CN2594451Y Expanding water injecting packer |
| 12/24/2003 | CN2594450Y Eccentric backing ring on hole top |
| 12/24/2003 | CN2594449Y Multistage wear-resistant sealed screw polish rod sealer |
| 12/24/2003 | CN2594448Y Screw turbulent positioner |
| 12/24/2003 | CN2594447Y Controller for plugging in well |
| 12/24/2003 | CA2489283A1 Collapsible expansion cone |
| 12/23/2003 | US6666276 Downhole radial set packer element |
| 12/23/2003 | US6666275 Bridge plug |
| 12/23/2003 | US6666272 Externally actuated subsea wellhead tieback connector |
| 12/23/2003 | US6666266 Screw-driven wellhead isolation tool |
| 12/18/2003 | WO2003104611A1 Method for construction and completion of injection wells |
| 12/18/2003 | WO2003104610A1 An anchoring and sealing system for a downhole tool |
| 12/18/2003 | WO2003104609A1 Rotating diverter head |
| 12/18/2003 | WO2002027137A8 Well sealing method and apparatus |
| 12/18/2003 | US20030231117 System and method for monitoring packer slippage |
| 12/18/2003 | US20030231017 Formation-based interpretation of NMR data for carbonate reservoirs |
| 12/18/2003 | US20030230406 Single placement well completion system |
| 12/18/2003 | US20030230405 System for running tubular members |
| 12/17/2003 | CN2592855Y Well cementing pipe collecting vehicle |
| 12/17/2003 | CN2592854Y Side-drilling multipurpose packing device |
| 12/17/2003 | CN2592853Y Large-displacement well-flushing packer |
| 12/17/2003 | CN2592852Y Mulfipurpose pollution-proof self-sealing device for well |
| 12/17/2003 | CN2592851Y Thichened oil thermal recovery well head apparatus |
| 12/16/2003 | US6664522 Method and apparatus for sealing multiple casings for oil and gas wells |
| 12/16/2003 | US6663144 Seal retainer for undersea hydraulic coupling |
| 12/16/2003 | US6662876 Method and apparatus for downhole tubular expansion |
| 12/16/2003 | US6662873 Methods and compositions for forming permeable cement sand screens in wells |
| 12/16/2003 | US6662869 Ceramic components for high pressure oil wells |
| 12/16/2003 | US6662868 Clamping well casings |
| 12/16/2003 | CA2308813C Method of and apparatus for inserting tubing into a well bore |
| 12/16/2003 | CA2258064C Oilwell leak containment apparatus for a completed oilwell |
| 12/11/2003 | WO2003102360A1 High pressure and temperature seal for downhole use |
| 12/11/2003 | US20030226689 Method for varying the density of drilling fluids in deep water oil and gas drilling applications |
| 12/11/2003 | US20030226668 Anchoring and sealing system for a downhole tool |
| 12/11/2003 | US20030226666 Tubing annulus valve |
| 12/11/2003 | US20030226660 Expandable retaining shoe |
| 12/11/2003 | US20030226659 Expandable retaining shoe |
| 12/10/2003 | CN2591228Y Falling proof blowout preventing box |
| 12/10/2003 | CN2591222Y Hydrostatic compressing cleanable well distribution packer |
| 12/10/2003 | CN2591221Y Non-flushable well packer with negative pressure chamber |
| 12/10/2003 | CN2591220Y Blowout preventer borehole apparatus |
| 12/10/2003 | CN2591219Y Antitheft oil packing box |
| 12/10/2003 | CN2591218Y Insulation box unit for oil field use |
| 12/09/2003 | US6659183 Cuttings injection target plate |
| 12/09/2003 | US6659181 Tubing hanger with annulus bore |
| 12/09/2003 | US6659180 Deepwater intervention system |
| 12/09/2003 | US6659178 Apparatus and method for sealing well bores and bore holes |
| 12/04/2003 | WO2003100209A1 Dynamic mudcap drilling and well control system |
| 12/04/2003 | US20030222455 Expandable connector |
| 12/04/2003 | US20030222410 High pressure and temperature seal for downhole use |
| 12/04/2003 | US20030221844 Reciprocating lubricator |