| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 06/06/2000 | US6070666 Fracturing method for horizontal wells |
| 06/06/2000 | US6070662 Formation pressure measurement with remote sensors in cased boreholes |
| 06/02/2000 | WO2000031452A2 Bidirectional metal to metal seal |
| 05/31/2000 | EP0890014B1 Method and system for monitoring a characteristic of an earth formation in a well |
| 05/31/2000 | EP0749516B1 Multi-operational expansion gasket |
| 05/31/2000 | DE19952306A1 Filling of mine shafts involves use of an expandable bag which in its filled and expanded state engages with the shaft wall and forms a plug for shaft filler material |
| 05/30/2000 | US6068427 System and method for replacement of components on sea bottom-based installations |
| 05/24/2000 | EP1002933A2 Downhole hydraulic pressure generator |
| 05/24/2000 | CN2379600Y Plug needing no pulling and running |
| 05/24/2000 | CN2379599Y Blow-out preventer |
| 05/24/2000 | CN1254052A Drilling rotary blowout preventer |
| 05/23/2000 | US6065544 Method and apparatus for multiple packer pressure relief |
| 05/23/2000 | US6065542 Adjustable hanger for tubular strings |
| 05/23/2000 | US6065538 Method of obtaining improved geophysical information about earth formations |
| 05/17/2000 | EP1001132A2 Telescoping/release joint |
| 05/17/2000 | EP1000219A1 A method of injecting drilling waste into a well while drilling |
| 05/16/2000 | US6063314 Method for accurate replication of shaped articles using sinterable powders |
| 05/16/2000 | US6062314 Tubing hanger and tree with horizontal flow and annulus ports |
| 05/16/2000 | US6062312 Tree running tool with emergency release |
| 05/11/2000 | WO2000026998A1 Electrical connector system |
| 05/11/2000 | WO2000026501A1 Wellbore system including a conduit and an expandable device |
| 05/11/2000 | WO2000026496A1 Shearing arrangement for subsea umbilicals |
| 05/11/2000 | WO2000026495A2 Remotely controlled assembly for wellbore flow diverter |
| 05/11/2000 | CA2347862A1 Remotely controlled assembly for wellbore flow diverter |
| 05/10/2000 | EP0999344A2 A remotely controllable apparatus for use in a subterranean well |
| 05/10/2000 | EP0999343A2 Method and apparatus for actuating a downhole device |
| 05/10/2000 | EP0999341A2 Method and apparatus for controlling fluid flow in subterranean formations |
| 05/10/2000 | EP0999339A2 Metal-to-metal seal assembly for oil and gas production apparatus |
| 05/10/2000 | EP0999338A1 Remotely operable actuator for use in subterranean wells |
| 05/10/2000 | EP0999337A2 Remotely actuated well plug apparatus |
| 05/10/2000 | EP0938622A4 Method for accelerating production - c-i-p ii |
| 05/10/2000 | EP0795091B1 A mechanical overload protection device |
| 05/10/2000 | CN2377344Y Thermal recovery packer for super viscous crude |
| 05/09/2000 | US6060434 Oil based compositions for sealing subterranean zones and methods |
| 05/09/2000 | US6059052 External pipe wiping apparatus and method of pulling and wiping a pipe string |
| 05/09/2000 | US6059042 Completions insertion and retrieval under pressure (CIRP) apparatus including the snaplock connector |
| 05/09/2000 | US6059035 Subterranean zone sealing methods and compositions |
| 05/09/2000 | US6059033 Apparatus for completing a subterranean well and associated methods |
| 05/09/2000 | US6058772 Sampling device |
| 05/09/2000 | US6058633 Quick coupling device and method utilizing an over-center spring |
| 05/09/2000 | CA2288390A1 Adjustable stuffing boxes for pump rods |
| 05/04/2000 | WO1999002815A8 Device and method for creating ramifications in a bore hole |
| 05/03/2000 | EP0997515A1 Polymeric earth support fluid compositions and method for their use |
| 05/03/2000 | EP0996812A1 Deformed multiple well template and process of use |
| 05/03/2000 | EP0828920A4 A simplified sealing and anchoring device for a well tool |
| 05/03/2000 | CN2376533Y Constant flow type eccentric making-up water sealer |
| 05/03/2000 | CN2376532Y Hole top polished rod deflection-regulating sealing device for oil pumping machine |
| 05/03/2000 | CN2376531Y Polished rod deflection-regulating blowout-prevening sealing for oil pumping machine |
| 05/02/2000 | US6056061 Apparatus for completing a subterranean well and associated methods |
| 05/02/2000 | US6056058 Methods and apparatus for automatically launching sticks of various materials into oil and gas wells |
| 05/02/2000 | US6056055 Downhole lubricator for installation of extended assemblies |
| 05/02/2000 | US6056053 Cementing systems for wellbores |
| 05/02/2000 | US6056052 Retrievable torque-through packer having high strength and reduced cross-sectional area |
| 05/02/2000 | US6056049 Wellhead retrieving tool |
| 04/27/2000 | WO2000023687A1 Universal cementing plug |
| 04/27/2000 | WO2000023686A1 Making up and breaking out of a tubing string in a well while maintaining continuous circulation |
| 04/26/2000 | EP0995911A1 Remotely actuated and locked hub clamp |
| 04/26/2000 | EP0995011A1 Improved method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing |
| 04/26/2000 | CN2375763Y Clamp type casing head |
| 04/26/2000 | CN2375762Y Metallic seal for pumping polish rod |
| 04/25/2000 | US6053252 Lightweight intervention system |
| 04/25/2000 | US6053248 Methods of completing wells utilizing wellbore equipment positioning apparatus |
| 04/25/2000 | US6053245 Method for monitoring the setting of well cement |
| 04/25/2000 | CA2135567C Methods of terminating undesirable gas migration in wells |
| 04/20/2000 | WO2000022278A1 Drilling method |
| 04/20/2000 | WO2000004269A3 Subsea wellbore drilling system for reducing bottom hole pressure |
| 04/20/2000 | CA2286543A1 Retrievable bridge plug and retrieving tool |
| 04/19/2000 | EP0993542A1 Anti-rotational cementing apparatus |
| 04/19/2000 | EP0993540A1 Device and method for creating ramifications in a bore hole |
| 04/19/2000 | EP0993519A1 Tension member |
| 04/19/2000 | EP0864032B1 Method of treating an underground formation |
| 04/19/2000 | CN2374642Y Center self-regulating and self-compacting gusher-proof box |
| 04/18/2000 | US6050789 Pump-in-pipe |
| 04/18/2000 | US6050544 Valve coupling device forming metal-to-metal seal |
| 04/18/2000 | US6050339 Annulus porting of horizontal tree |
| 04/18/2000 | US6050338 Subsea wellhead apparatus |
| 04/18/2000 | US6050337 Equipment and method for the injection of high-pressure materials into the soil |
| 04/18/2000 | US6050336 Method and apparatus to isolate a specific zone |
| 04/18/2000 | US6050131 Method for verifying positive inflation of an inflatable element |
| 04/13/2000 | DE19855048C1 Borehole probe for geohydrology, e.g. for ground water flow measurement; has tracer fluid supplied to intermediate gap between packer and enclosing liquid pervious wall |
| 04/12/2000 | EP0991847A1 Downhole surge pressure reduction system and method of use |
| 04/12/2000 | CN2373561Y Fish-up-type fracture bridge plug |
| 04/12/2000 | CN2373560Y Packer for formation tester |
| 04/11/2000 | US6047776 Enhanced control line exit |
| 04/06/2000 | WO1999057409A3 A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
| 04/05/2000 | CN1249392A Measurement of rock pressure using distance sensor in casing drilling |
| 04/05/2000 | CN1249390A Technology for cementing well with self-expansion cement and its relative tool |
| 04/04/2000 | US6047239 Formation testing apparatus and method |
| 04/04/2000 | US6046685 Redundant downhole production well control system and method |
| 04/04/2000 | US6044906 Inflatable tubular sleeve for tubing or obturating a well or pipe |
| 04/04/2000 | US6044905 Chemical stick storage and delivery system |
| 04/04/2000 | US6044904 Wellhead assembly |
| 04/04/2000 | US6044690 Shearable multi-gage blowout preventer test tool and method |
| 03/30/2000 | WO2000017485A1 Device for equipment adapted for waste product injection usage, i.e. cuttings or other environmentally toxic liquids |
| 03/30/2000 | DE19945852A1 Device for monitoring ground water flow in bore wells; has optical system between camera unit and measurement zone located in tube |
| 03/29/2000 | EP0989283A2 Wellhead |
| 03/29/2000 | EP0988439A1 Casing annulus remediation system |
| 03/29/2000 | CN1248663A Section regulation process for interrupted water-injection depth of water injection well |
| 03/29/2000 | CN1248662A Single-barrel one-prop type vibration-insulation anti-ice well head platform |
| 03/28/2000 | US6042303 Riser system for sub sea wells and method of operation |