| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 10/05/1994 | EP0618343A2 Horizontal inflatable tool |
| 10/04/1994 | US5351759 Slag-cement displacement by direct fluid contact |
| 10/04/1994 | US5351753 Leak containment system for a stuffing box |
| 10/02/1994 | CA2120198A1 Methods of displacing liquids through pipes |
| 09/29/1994 | WO1994021887A1 Method and device for cementing a well |
| 09/29/1994 | WO1994021886A1 Method for isolating a wellbore formation zone |
| 09/29/1994 | WO1994021885A2 Sealing element |
| 09/29/1994 | CA2157409A1 A method for isolating a zone of a formation or reservoir penetrated by a wellbore |
| 09/28/1994 | EP0617195A2 Well completion apparatus |
| 09/28/1994 | CN2178278Y Theft-proof gate valve for oil gas well head |
| 09/27/1994 | US5350018 Well treating system with pressure readout at surface and method |
| 09/27/1994 | US5350017 In an oil well apparatus |
| 09/27/1994 | CA2114176A1 Top drive cementing manifold |
| 09/23/1994 | CA2119521A1 Sand screen completion |
| 09/21/1994 | EP0616109A1 Method of evaluating oil or gas well cementing process |
| 09/21/1994 | CN2177799Y Packer |
| 09/20/1994 | US5348107 Pressure balanced inner chamber of a drilling head |
| 09/20/1994 | US5348095 Method of creating a wellbore in an underground formation |
| 09/20/1994 | US5348093 Cementing systems for oil wells |
| 09/20/1994 | US5348089 Method and apparatus for the multiple stage cementing of a casing string in a well |
| 09/20/1994 | US5348087 Full bore lock system |
| 09/20/1994 | US5348085 Unitary well monitoring plug device |
| 09/15/1994 | WO1994020728A1 Straight bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore |
| 09/14/1994 | EP0614505A1 Template and process for drilling and completing multiple wells |
| 09/14/1994 | CN2177088Y Finishing tool for deep well pump |
| 09/14/1994 | CN2177087Y Hot production wellhead assembly |
| 09/13/1994 | US5346334 Apparatus for injecting soil conditioning fluid |
| 09/13/1994 | US5346013 Method for reducing or completely stopping the influx of water in boreholes for the extraction of oil and/or hydrocarbon gas |
| 09/13/1994 | US5346011 Methods of displacing liquids through pipes |
| 09/13/1994 | US5346007 Well completion method and apparatus using a scab casing |
| 09/13/1994 | US5346005 Inflatable borehole plug assemblies |
| 09/13/1994 | US5346004 Environmentally secure polished rod liner head |
| 09/13/1994 | CA2076260C Well head metal seal |
| 09/11/1994 | CA2118673A1 Plug or lock for use in oil field tubular members and an operating system therefor |
| 09/07/1994 | EP0613991A1 Apparatus and for driving pipes into the ground |
| 09/07/1994 | CN2176427Y Locking casinghead |
| 09/06/1994 | US5343968 Downhole material injector for lost circulation control |
| 09/06/1994 | US5343963 Method and apparatus for providing controlled force transference to a wellbore tool |
| 09/06/1994 | US5343956 Coiled tubing set and released resettable inflatable bridge plug |
| 09/06/1994 | US5343954 Apparatus and method of anchoring and releasing from a packer |
| 09/06/1994 | US5343952 Cement plug for well abandonment |
| 09/06/1994 | US5343951 Drilling and cementing slim hole wells |
| 09/06/1994 | US5343949 Isolation washpipe for earth well completions and method for use in gravel packing a well |
| 09/06/1994 | US5343947 Anchor plug for open hole test tools |
| 09/06/1994 | US5343946 High pressure packer for a drop-in check valve |
| 09/06/1994 | US5343944 Self aligning stuffing box for pumpjack units |
| 09/06/1994 | US5343943 Portable oil-drilling waste recovery system |
| 09/06/1994 | US5343891 Fluid couplings |
| 09/06/1994 | CA2069077C Adjustable mandrel well casing hanger |
| 09/06/1994 | CA2066888C Metal-to-metal wellhead seal for rough casing |
| 09/01/1994 | WO1994019577A1 Method for installing a gravel pack completion in a well |
| 09/01/1994 | WO1994019574A1 Method for drilling and cementing a well |
| 09/01/1994 | CA2156856A1 Method for drilling and cementing a well |
| 08/31/1994 | CN2175827Y Logging device for meauring well-pressure |
| 08/30/1994 | US5342066 Non-extrusion device for split annular casing/tubing hanger compression seals |
| 08/30/1994 | US5341885 Internal tubing hanger lockdown |
| 08/30/1994 | US5341882 Well drilling cuttings disposal |
| 08/30/1994 | US5341876 Below fracture pressure pulsed gel injection method |
| 08/30/1994 | US5341874 Retrievable packer |
| 08/27/1994 | CA2113523A1 Pressure balanced inner chamber of a drilling head |
| 08/24/1994 | EP0611874A1 Subsea wellhead |
| 08/24/1994 | EP0611412A1 Cementing plug |
| 08/24/1994 | EP0611411A1 Two-part connector for fluid carrying conduits |
| 08/23/1994 | US5340626 Well packer |
| 08/23/1994 | US5339902 Well cementing using permeable cement |
| 08/23/1994 | US5339901 Method of achieve zonal isolation |
| 08/23/1994 | US5339894 Rubber seal adaptor |
| 08/18/1994 | WO1994018429A1 Sealing device for sealing of holes in the wall of a pipe in a curved oil well, an anchoring device for the sealing device and a tool for mounting of the sealing device and the anchoring device |
| 08/18/1994 | CA2115886A1 Process and fluid for the recovery of oil in reservoirs with aquifer |
| 08/17/1994 | EP0611085A1 Bore selector for a subsea wellhead |
| 08/17/1994 | CN2174563Y Drip |
| 08/16/1994 | US5338465 Aqueous gellable composition with delayed gelling time |
| 08/16/1994 | US5337823 Preform, apparatus, and methods for casing and/or lining a cylindrical volume |
| 08/16/1994 | US5337821 Method and apparatus for the determination of formation fluid flow rates and reservoir deliverability |
| 08/16/1994 | US5337808 Technique and apparatus for selective multi-zone vertical and/or horizontal completions |
| 08/10/1994 | CA2114784A1 Bore selector |
| 08/09/1994 | US5335737 Retrievable whipstock |
| 08/09/1994 | US5335732 Oil recovery combined with injection of produced water |
| 08/09/1994 | US5335729 Tubular connection, method for making same, and tool therefor |
| 08/09/1994 | US5335725 Wellbore cementing method |
| 08/09/1994 | US5335542 Integrated permeability measurement and resistivity imaging tool |
| 08/05/1994 | CA2088794A1 Portable blow out controller |
| 08/02/1994 | US5333911 Connector |
| 08/02/1994 | US5333832 Blowout preventer with removable packer |
| 08/02/1994 | US5333692 Straight bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore |
| 08/02/1994 | US5333690 Cementing with blast furnace slag using spacer |
| 08/02/1994 | US5333689 Flowing fluid loss agent into the well to form barrier, positioning a screen in said well adjuscent to formation, flowing gravel slurry which contains gelled hydrochoric acid reacts with fluid loss agent to remove barrier |
| 08/02/1994 | US5333685 Wireline set and tubing retrievable packer |
| 07/27/1994 | EP0454717B1 Subsea electrical conductive insert coupling |
| 07/26/1994 | US5332045 Apparatus and method for placing and for backwashing well filtration devices in uncased well bores |
| 07/26/1994 | US5332044 Wellhead isolation tool and method of use |
| 07/26/1994 | US5332043 For a tubular conduit |
| 07/26/1994 | US5332040 Process to cement a casing in a wellbore |
| 07/26/1994 | US5332039 Selective dual gravel pack |
| 07/26/1994 | US5332038 Gravel packing system |
| 07/26/1994 | US5332037 Squeeze cementing method for wells |
| 07/26/1994 | US5331736 Method of loading a liveload assembly for rotary or reciprocating shaft packing |
| 07/26/1994 | CA1330935C Drill string equipment with a lateral light sleeve using a cable safety anchoring member on a support and method thereof |
| 07/21/1994 | WO1994016192A2 Zone isolation apparatus |
| 07/21/1994 | CA2153889A1 Zone isolation apparatus |