| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 02/02/1988 | US4722389 Well bore servicing arrangement |
| 01/26/1988 | US4721415 Method of positioning a wellhead |
| 01/26/1988 | US4721163 Subsea well head alignment system |
| 01/26/1988 | US4721132 Subsea flowline quick disconnect coupling |
| 01/26/1988 | CA1231891A1 Apparatus and method for inserting flow control means into a well casing |
| 01/20/1988 | CN87207823U Bush type spurt-preventing case for motor pumped oil well |
| 01/19/1988 | US4720113 Multilayer, multihardness seal |
| 01/19/1988 | US4719971 Metal-to-metal/elastomeric pack-off assembly for subsea wellhead systems |
| 01/19/1988 | CA1231641A1 Blowout preventer stacks and method of tensioning stack tie rods |
| 01/14/1988 | WO1988000275A1 Cement control valve device |
| 01/12/1988 | US4718679 Lockdown ring assembly for wellhead seal |
| 01/12/1988 | US4718496 For isolating a damaged section of casing, isolating a formation |
| 01/12/1988 | US4718495 Surface packer and method for using the same |
| 01/12/1988 | US4718492 Coating with epoxy resin |
| 01/12/1988 | US4718488 Pump-out plug system for a well conduit |
| 01/12/1988 | US4718487 For wireline control equipment |
| 01/07/1988 | EP0251872A1 Well head with flow control means for landfill gas recovery |
| 01/07/1988 | EP0251595A2 Surface wellheadand method of installing tubular casing |
| 01/07/1988 | DE3621354A1 Borehole closure with expanding ring element |
| 01/05/1988 | US4717488 Spacer fluid |
| 01/05/1988 | US4717473 Apparatus for time-averaged or composite sampling of chemicals in ground water |
| 01/05/1988 | US4716965 Surrounding sheath of alternating layers of polyurethane and polyethylene foams; sealing |
| 01/05/1988 | US4716963 Apparatus for well completion operations |
| 01/05/1988 | US4716962 Stripping gland |
| 01/05/1988 | US4716961 Rotary drive apparatus for downhold pump |
| 12/29/1987 | US4715967 Composition and method for temporarily reducing permeability of subterranean formations |
| 12/29/1987 | US4715439 Well cap |
| 12/23/1987 | EP0250279A2 Method and apparatus for measuring the permeability of a land area |
| 12/23/1987 | EP0250107A2 Well bore measurement tool |
| 12/23/1987 | EP0250106A2 Lock for downhole apparatus |
| 12/23/1987 | EP0250072A2 Collet connector |
| 12/23/1987 | EP0250016A2 Well cementing tool |
| 12/23/1987 | CN86209480U High pressure plug with elastic dilated machinery |
| 12/22/1987 | US4714117 Drainhole well completion |
| 12/22/1987 | US4714111 Weight/pressure set pack-off for subsea wellhead systems |
| 12/22/1987 | CA1230545A1 Electric wireline packer/retriever apparatus |
| 12/15/1987 | US4712621 Casing hanger running tool |
| 12/15/1987 | US4712613 Down-hole blow-out preventers |
| 12/08/1987 | US4711301 Valve assembly for inflatable packer |
| 12/08/1987 | US4711300 Downhole cementing tool assembly |
| 12/08/1987 | CA1230051A1 Communication joint for use in a well |
| 12/08/1987 | CA1230050A1 Loop line with mobile coupling linking a header intake to a well-head outlet |
| 12/01/1987 | US4710063 Non-return valve for bore hole sleeves |
| 12/01/1987 | US4710061 Offshore well apparatus and method |
| 12/01/1987 | US4709761 Well conduit joint sealing system |
| 12/01/1987 | US4709760 For an oil or gas well casing |
| 12/01/1987 | US4709758 High temperature packer for well conduits |
| 12/01/1987 | US4709726 Hydraulic coupler with floating metal seal |
| 11/26/1987 | DE3617024A1 Drill hole closure with double inflation ring seal |
| 11/24/1987 | US4708376 Hydraulic collet-type connector |
| 11/24/1987 | US4708208 Method and apparatus for setting, unsetting, and retrieving a packer from a subterranean well |
| 11/24/1987 | US4708202 Drillable well-fluid flow control tool |
| 11/24/1987 | US4708201 Top entry electrical transmission assembly for submersible pumping |
| 11/24/1987 | CA1229478A1 Sand consolidation methods using adsorbable catalysts |
| 11/19/1987 | DE3713071A1 Sealing arrangement for the upper end of a riser pipe or delivery line |
| 11/17/1987 | US4707041 Subsea well electrical coupling system |
| 11/17/1987 | US4706757 Wellhead supported subsea templates and methods |
| 11/17/1987 | US4706756 Subsea tool launching equipment |
| 11/17/1987 | US4706747 For use in wellbore operations |
| 11/17/1987 | US4706746 Downhole inflatable packer pump and testing apparatus |
| 11/10/1987 | US4705431 Method for forming a fluid barrier by means of sloping drains, more especially in an oil field |
| 11/10/1987 | US4705314 Tool loading device |
| 11/10/1987 | US4705112 Method and apparatus for effecting an opening in a well casing |
| 11/10/1987 | US4705111 Tubing assembly |
| 11/10/1987 | US4705109 Controlled retracting gasifying agent injection point process for UCG sites |
| 11/07/1987 | CN86206973U Controllable confining device |
| 11/05/1987 | WO1987006645A1 Rapid coupling system for wellheads, riser stacks, blowout preventers and diverter systems in wellhead drilling |
| 11/04/1987 | CN86102963A Well bore reconpletion |
| 11/03/1987 | US4703938 Seal for ram type blowout preventor |
| 11/03/1987 | US4703813 Cementing portion of conductor string |
| 11/03/1987 | US4703804 From a well casing |
| 11/03/1987 | US4703774 Subsea safety check valve system |
| 11/03/1987 | CA1228805A1 Selective injection packer |
| 10/28/1987 | EP0243067A2 Spacer fluid |
| 10/27/1987 | US4702481 Wellhead pack-off with undulated metallic seal ring section |
| 10/27/1987 | US4702320 For installing subsea devices |
| 10/21/1987 | EP0242256A1 Process and device for measuring characteristics of geological formations in a horizontal borehole coming from an underground tunnel |
| 10/21/1987 | EP0242008A2 Blowout preventer |
| 10/20/1987 | US4700954 Radially extensible joint packing with fiber filled elastomeric core |
| 10/20/1987 | US4700777 Downhole tool |
| 10/20/1987 | CA1228373A1 Cement slurries for deep holes, with a copolymer content for reducing the water loss |
| 10/20/1987 | CA1228289A1 Well cementing valve |
| 10/20/1987 | CA1228226A1 Sintered low density gas and oil well proppants from a low cost unblended clay material of selected compositions |
| 10/14/1987 | EP0240490A1 Turbulence cementing sub |
| 10/13/1987 | US4699355 Fail-safe fluid piloted valve positioner with hydromechanical position lock |
| 10/13/1987 | US4699350 Valve and a process for removing a closure member of the valve |
| 10/13/1987 | US4699216 Blowout preventer for a side entry sub |
| 10/13/1987 | US4699215 External tie-back connector |
| 10/08/1987 | DE3705902A1 Well head for refuse-dump degassing |
| 10/06/1987 | US4697828 Wellhead body lockdown and method for engaging same |
| 10/06/1987 | US4697640 For sealing a well bore annulus |
| 10/06/1987 | US4697639 For an oil well |
| 10/06/1987 | CA1227749A1 Tubing resettable well tool |
| 10/06/1987 | CA1227748A1 Casing packer |
| 10/06/1987 | CA1227747A1 Crossover seal assembly |
| 10/01/1987 | DE3607899A1 Actuator |
| 09/29/1987 | US4696493 Subsea wellhead tieback system |
| 09/29/1987 | US4696453 Coupling device for submarine pipeline system |
| 09/29/1987 | US4696344 Annulus pressure operated ratchet device |
| 09/29/1987 | US4696343 Wireline dump bailer |