| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 08/13/1996 | US5544704 For assisting directional drilling in a well bore |
| 08/08/1996 | WO1996023955A1 Well barrier |
| 08/08/1996 | WO1996023849A1 Polymeric earth support fluid compositions and method for their use |
| 08/08/1996 | CA2212031A1 Polymeric earth support fluid compositions and method for their use |
| 08/07/1996 | CN2232482Y Oil-well optical rod sealing apparatus |
| 08/06/1996 | US5542475 Blanking plug assembly |
| 08/06/1996 | US5542474 Injecting surfactant-polypeptide mixture |
| 08/06/1996 | US5542473 Simplified sealing and anchoring device for a well tool |
| 08/06/1996 | CA2112601C Tubing rotator for a well |
| 07/31/1996 | EP0723641A1 Sealing connection system having rotatably mounted tension means |
| 07/30/1996 | US5540283 Well pumping |
| 07/30/1996 | US5540282 Apparatus and method for completing/recompleting production wells |
| 07/30/1996 | US5540280 Method of servicing a well |
| 07/30/1996 | US5540279 Downhole tool apparatus with non-metallic packer element retaining shoes |
| 07/30/1996 | CA2008151C Subterranean well anchoring apparatus |
| 07/25/1996 | WO1996022452A1 Method of creating a casing in a borehole |
| 07/25/1996 | WO1996022450A1 Unitary diversionary-tubing hanger and energizable rod seal |
| 07/24/1996 | CN1032367C Oil well porthole resin small ball sealing agent and its making method |
| 07/23/1996 | US5538080 Self aligning stuffing box for pumpjack units |
| 07/18/1996 | WO1996021795A1 Low profile and lightweight high pressure blowout preventer |
| 07/18/1996 | WO1996021794A1 Method for injecting fluid into a wellbore |
| 07/18/1996 | WO1996021793A1 Drilling and pipe laying unit |
| 07/18/1996 | CA2208681A1 Drilling and pipe laying unit |
| 07/17/1996 | EP0722037A2 Apparatus for injecting fluid into a wellbore |
| 07/17/1996 | CN2231307Y Packer |
| 07/16/1996 | US5535827 Hydraulic connector |
| 07/16/1996 | US5535824 Well tool for completing a well |
| 07/11/1996 | WO1996021083A1 Method and device for casing a well, particularly an oil well bore or a pipe, using an in situ curable flexible tubular preform |
| 07/11/1996 | WO1996020899A1 Thixotropic materials |
| 07/10/1996 | CN2230809Y Retrieving and drilling packer |
| 07/10/1996 | CN2230808Y Anti-blowout apparatus |
| 07/09/1996 | US5533570 Apparatus for downhole injection and mixing of fluids into a cement slurry |
| 07/09/1996 | CA2133724C Apparatus and method for the installation of coiled tubing in oil and gas wells |
| 07/03/1996 | EP0719905A1 Wellhead |
| 07/03/1996 | CN2230349Y Integrated simple casing head |
| 07/03/1996 | CN2230348Y Combined multi-function wellhead assembly for injecting and producing oil |
| 07/02/1996 | US5531895 Method and apparatus for installing and removing biologically structured wall systems |
| 07/02/1996 | US5531273 Well completion tool and process |
| 07/02/1996 | US5531272 Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair |
| 07/02/1996 | CA2006674C System for establishing a sealing connection between two axially impacting members in a pipe conduit |
| 06/26/1996 | EP0662188A4 Method for cement placement in horizontal wells. |
| 06/26/1996 | CN2229969Y Flexible neck type blowout-prevention box for oil well |
| 06/25/1996 | US5529123 Method for controlling fluid loss from wells into high conductivity earth formations |
| 06/23/1996 | CA2165909A1 Inflatable packer with wide slat reinforcement |
| 06/23/1996 | CA2165907A1 Inflatable packer with bladder shape control |
| 06/23/1996 | CA2165906A1 Inflation shape control system for inflatable packers |
| 06/20/1996 | CA2164576A1 Device for plugging horizontal or vertical wells in oil or similar drillings |
| 06/19/1996 | CN2229510Y Automatic well-packer adapted for oil-well sucker pole breaking |
| 06/19/1996 | CN1124815A Temporary plugging technique for injection distribution working construction of oil field |
| 06/18/1996 | US5527135 Method for injecting lubricant or back-filling material into a space between the outside of double-wall pipes and the ground in the pipe-jacking method and an apparatus therefor |
| 06/18/1996 | US5526884 Downhole tool release mechanism |
| 06/18/1996 | US5526880 Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| 06/18/1996 | US5526879 Introduction of particulate material into a borehole |
| 06/18/1996 | US5526878 Cementing tool apparatus for use in a well bore |
| 06/12/1996 | CN2228973Y Wellhead sealed inside pipe cementing tool |
| 06/12/1996 | CN2228972Y Stuffing box for oil field well head |
| 06/11/1996 | US5524710 Hanger assembly |
| 06/11/1996 | US5524709 Method for acoustically coupling sensors in a wellbore |
| 06/11/1996 | US5524517 Apparatus for cutting columnar structures with reciprocally movable tensioned cutting wire |
| 06/11/1996 | CA2071183C Whipstock setting method and apparatus |
| 06/05/1996 | EP0715056A2 Blanking plug assembly |
| 06/05/1996 | DE19543291A1 Arrangement for plugging drilled holes, esp. in concrete components |
| 06/05/1996 | DE19543277A1 Bentonite prod. for sealing bore holes in earth |
| 06/05/1996 | CN2228636Y Two-purpose stove for water boiling and warming |
| 06/04/1996 | US5522464 For use at a wellhead for securing coiled tubing in suspension |
| 06/04/1996 | US5522458 High pressure cementing plug assemblies |
| 06/04/1996 | CA2079071C Method and apparatus for drilling bore holes under pressure |
| 05/30/1996 | WO1996016248A1 Methods for sub-surface fluid shut-off |
| 05/30/1996 | CA2181690A1 Methods for sub-surface fluid shut-off |
| 05/28/1996 | US5520248 Method and apparatus for determining the hydraulic conductivity of earthen material |
| 05/22/1996 | EP0712817A1 Method for cementing a conductor pipe in an underwater well |
| 05/15/1996 | CN2227193Y Compounded rubber plug |
| 05/14/1996 | US5515926 Apparatus and method for installing coiled tubing in a well |
| 05/14/1996 | US5515925 Apparatus and method for installing coiled tubing in a well |
| 05/14/1996 | US5515921 Method for cementing a directional well |
| 05/14/1996 | US5515917 Well apparatus |
| 05/14/1996 | US5515916 Blowout preventer |
| 05/08/1996 | EP0710318A1 Zone isolation apparatus |
| 05/07/1996 | US5513929 Fixed offshore platform structures, using small diameter, tensioned, well casing tiebacks |
| 05/07/1996 | US5513705 Enhanced oil recovery |
| 05/02/1996 | WO1996012866A1 System for pumping well fluids |
| 05/01/1996 | EP0709545A2 Deep water slim hole drilling system |
| 05/01/1996 | EP0709543A2 Downhole casing filling and circulating apparatus and method |
| 05/01/1996 | EP0513296B1 Device for the assembly or disassembly of probes in process pipes, tanks, etc. |
| 05/01/1996 | CN2226141Y Bimetallic self-sealed hot-extraction packer |
| 04/30/1996 | US5511620 Straight Bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore |
| 04/23/1996 | US5509477 Borehole ventilation sealcover |
| 04/23/1996 | US5509476 Short wellhead plug |
| 04/18/1996 | WO1996011344A1 A mechanical overload protection device |
| 04/17/1996 | EP0688393A4 Method for isolating a wellbore formation zone |
| 04/16/1996 | US5507465 Blow-out preventer |
| 04/16/1996 | US5507346 Composite well flow conductor |
| 04/16/1996 | US5507345 For reducing the production of undesirable fluid from a well |
| 04/16/1996 | US5507343 Apparatus for repairing damaged well casing |
| 04/16/1996 | US5507341 Inflatable packer with bladder shape control |
| 04/10/1996 | EP0705379A1 Tool for use in wellbore operations |
| 04/09/1996 | US5505502 Multiple-seal underwater pipe-riser connector |
| 04/09/1996 | US5505426 Hydraulically controlled blowout preventer |
| 04/09/1996 | US5505263 Packer set safety valve for controlling dual fluid flows |
| 04/09/1996 | US5505258 Parallel tubing system for pumping well fluids |