| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 08/28/2002 | CN1366127A Selective water-plugging technology for preventing sand in oil well |
| 08/27/2002 | US6439302 Stripper packer |
| 08/22/2002 | WO2002064942A2 Downhole packer |
| 08/22/2002 | WO2002035257A3 Clamping well casings |
| 08/22/2002 | US20020112886 Cuttings injection target plate |
| 08/22/2002 | US20020112338 Profile formation |
| 08/21/2002 | EP1233145A2 Wellhead Assembly |
| 08/21/2002 | EP1233144A2 Locating and orienting system and use in multilateral wells |
| 08/21/2002 | EP1233143A1 Coiled tubing |
| 08/21/2002 | EP1233142A2 Guide bushing and use in multilateral wells |
| 08/21/2002 | EP1232327A2 Sealing off openings through the wall of a well tubular |
| 08/21/2002 | EP1232326A2 Device for injecting a fluid into a formation |
| 08/21/2002 | EP1232325A1 Setting an annular seal |
| 08/21/2002 | CN2506766Y Valve controlled packer |
| 08/21/2002 | CN2506765Y Gas release packer for hole top self-closing cleanable well |
| 08/21/2002 | CA2372876A1 Cementing casing strings in deep water offshore wells |
| 08/20/2002 | CA2228885C Improved full bore nipple and associated lock mandrel therefor |
| 08/20/2002 | CA2223214C Apparatus for axially displacing a downhole tool or a tubing string in a well bore |
| 08/15/2002 | WO2002063129A1 Safety valve for oil wells |
| 08/15/2002 | WO2001038692A8 Sealing off openings through the wall of a well tubular |
| 08/15/2002 | US20020109080 Wellbores utilizing fiber optic-based sensors and operating devices |
| 08/15/2002 | US20020108784 Non-rotating sensor assembly for measurement-while-drilling applications |
| 08/15/2002 | US20020108757 Submersible pump suspension system |
| 08/14/2002 | EP1230467A1 Two-part connector for fluid carrying conduits |
| 08/14/2002 | CN2505593Y Multi-functional tubing string |
| 08/14/2002 | CN2505589Y Temp.-control compression packer |
| 08/14/2002 | CN2505588Y Pressure difference resistance water injection packer |
| 08/14/2002 | CN2505587Y Hot-water circulating oil-production cylinder packer |
| 08/14/2002 | CN2505586Y Anti-theft cover for oil well head |
| 08/14/2002 | CN1363755A Sealer for mouth of pumped oil well |
| 08/13/2002 | US6433991 Controlling activation of devices |
| 08/13/2002 | US6431286 Pivoting injector arrangement |
| 08/13/2002 | US6431282 Method for annular sealing |
| 08/13/2002 | US6431280 Injecting the interactive chemicals used to form gels at reservoir temperatures independently and sequentially so they only contact at desired depth, preventing premature gelation; using specified partition coefficients |
| 08/13/2002 | US6431276 Remote actuated plug apparatus |
| 08/13/2002 | US6431275 Inflation control device |
| 08/13/2002 | US6431274 Well packer |
| 08/13/2002 | US6431273 Inflatable packer |
| 08/13/2002 | CA2259680C Rotating bop and method |
| 08/08/2002 | WO2001086112A3 Mud bucket seal attachment |
| 08/08/2002 | US20020107562 Technique of forming expandable devices from cells that may be transitioned between a contracted state and an expanded state |
| 08/08/2002 | US20020104662 Seal assembly for dual string coil tubing injection and method of use |
| 08/08/2002 | US20020104660 Sea-floor pressure head assembly |
| 08/08/2002 | US20020104656 System for cementing a liner of a subterranean well |
| 08/08/2002 | US20020104643 Energy systems |
| 08/07/2002 | EP1228290A1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/07/2002 | EP0760942B1 Apparatus for testing a shear thickening plugging fluid |
| 08/07/2002 | CN2504384Y Ground driving sealing appts. of screw pumping unit |
| 08/07/2002 | CN2504383Y Self-thrusting disk root polish rod sealing appts. |
| 08/06/2002 | US6427785 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 08/06/2002 | CA2226247C Lightweight intervention system for use with horizontal tree with internal ball valve |
| 08/01/2002 | WO2002059458A2 Instrumented cementing plug and system |
| 08/01/2002 | WO2002059454A1 Method and apparatus for tensioning tubular members |
| 08/01/2002 | WO2002059453A2 Riser connector for a wellhead assembly and method for conducting offshore well operations using the smae |
| 08/01/2002 | WO2002059452A1 Device and method to seal boreholes |
| 08/01/2002 | WO2002033213A3 Transport and supply frame for bop assembly |
| 08/01/2002 | WO2001009481A9 Anti-rotation device for use with well tools |
| 08/01/2002 | US20020103291 Cement Composition |
| 08/01/2002 | US20020100596 Method and apparatus for tensioning tubular members |
| 08/01/2002 | US20020100595 Flow control system for an apparatus for radially expanding tubular members |
| 08/01/2002 | US20020100594 Wellbore casing |
| 08/01/2002 | US20020100593 Preload for expansion cone |
| 08/01/2002 | US20020100592 Production flow tree cap |
| 08/01/2002 | US20020100591 Riser connector for a wellhead assembly and method for conducting offshore well operations using the same |
| 08/01/2002 | US20020100589 Methods and apparatus for hydraulic and electro-hydraulic control of subsea blowout preventor systems |
| 08/01/2002 | US20020100583 Composite landing collar for cementing operation |
| 08/01/2002 | CA2398381A1 Instrumented cementing plug and system |
| 07/31/2002 | EP1226336A1 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 07/31/2002 | EP1226333A1 A device in a subsea system for controlling a hydraulic actuator and a subsea system with a hydraulic actuator |
| 07/31/2002 | EP1226332A1 Hydraulically set straddle packers |
| 07/31/2002 | EP1226331A1 Drillable inflatable packer & methods of use |
| 07/31/2002 | CN2503197Y Extrusion filling suspension device for anti-sand work |
| 07/31/2002 | CN2503196Y Stratigraphic pressure balance well cementation device |
| 07/30/2002 | US6426917 Reservoir monitoring through modified casing joint |
| 07/30/2002 | US6425444 Method and apparatus for downhole sealing |
| 07/30/2002 | US6425442 Anti-rotation device for use with well tools |
| 07/25/2002 | WO2001042620A9 Sand control method and apparatus |
| 07/25/2002 | US20020096878 Connector |
| 07/25/2002 | US20020096365 Frac plug with caged ball |
| 07/25/2002 | US20020096338 Method of coupling a tubular member to a preexisting structure |
| 07/25/2002 | US20020096330 Bentonite nodules |
| 07/24/2002 | EP1092078A4 Flying lead workover interface system |
| 07/24/2002 | EP1021637A4 Slimbore subsea completion system and method |
| 07/24/2002 | CN1360004A Fast plugging agent for drilling fluid |
| 07/23/2002 | US6422316 Mounting system for offshore structural members subjected to dynamic loadings |
| 07/23/2002 | US6422315 Subsea drilling operations |
| 07/23/2002 | US6422311 Apparatus for retaining two strings of tubulars |
| 07/23/2002 | CA2045441C Anti-rotation device for cementing plugs with deformable peripheral "fins" or "lips" |
| 07/18/2002 | WO2002055840A1 Remotely installed pressure containing closure |
| 07/18/2002 | WO2002055836A1 Method of drilling and operating a subsea well |
| 07/18/2002 | WO2002055831A2 Improved method for stimulation of liquid flow in a well |
| 07/18/2002 | WO2002029207B1 Method and system for tubing a borehole in single diameter |
| 07/18/2002 | US20020093875 Fluid mixing system |
| 07/18/2002 | US20020092658 Wellbore isolation technique |
| 07/18/2002 | US20020092657 Method of applying an axial force to an expansion cone |
| 07/18/2002 | US20020092655 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/18/2002 | US20020092654 Expandable packer isolation system |
| 07/18/2002 | US20020092650 Method and apparatus for stimulation of multiple formation intervals |
| 07/17/2002 | EP1223305A2 Bi-stable expandable device and method for expanding such a device |
| 07/17/2002 | EP0760896B1 A well entry tool |