| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 12/06/2001 | US20010047871 Use of helically wound tubular structure in the downhole environment |
| 12/06/2001 | US20010047870 Apparatus for forming wellbore casing |
| 12/06/2001 | US20010047869 Method and apparatus for drilling an offshore underwater well |
| 12/06/2001 | US20010047866 Wellbore casing |
| 12/06/2001 | CA2408514A1 Use of helically wound tubular structure in the downhole environment |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159507A1 Method of making a conductive downhole wire line system |
| 12/05/2001 | EP1159506A1 Steerable modular drilling assembly |
| 12/04/2001 | US6325278 Concentric, insulated tubular conduits and method of assembly |
| 12/04/2001 | US6325163 Bit torque limiting device |
| 12/04/2001 | US6325162 Bit connector |
| 12/04/2001 | US6325145 Pressure pulse attenuator |
| 12/04/2001 | US6325144 Inflatable packer with feed-thru conduits |
| 12/04/2001 | CA2043695C Drilling tool for sinking wells in underground rock formations |
| 12/04/2001 | CA2009733C Device in impact machines |
| 12/01/2001 | CA2310546A1 Multi-passage conduit |
| 12/01/2001 | CA2310477A1 Well production apparatus and method |
| 11/29/2001 | WO2001038687A3 Pipe connecting method |
| 11/29/2001 | US20010045546 Preventin corrosion in pipelines by draining pipeline of all residual compounds, blowing through with nitrogen and rinsing with a corrosion inhibitor |
| 11/29/2001 | US20010045303 Mining drill sheels |
| 11/29/2001 | US20010045302 Flexible hose with thrusters for horizontal well drilling |
| 11/29/2001 | US20010045289 Wellbore casing |
| 11/28/2001 | CN2462068Y Rotary bull rod for roofbolt drilling machine |
| 11/27/2001 | US6322331 Tubular junction for tubing pump |
| 11/27/2001 | US6322110 Tubular connection |
| 11/27/2001 | US6322109 Expandable tubing connector for expandable tubing |
| 11/27/2001 | US6321862 Rotary drill bits for directional drilling employing tandem gage pad arrangement with cutting elements and up-drill capability |
| 11/27/2001 | US6321857 Directional drilling apparatus and method utilizing eccentric stabilizer |
| 11/27/2001 | US6321844 Hybrid riser and method for sub-sea transportation of petroleum products with the device |
| 11/22/2001 | WO2001088326A1 Device for sealing a drill hole and for discharging drillings or stripped extraction material |
| 11/22/2001 | WO2001088324A1 Composite buoyancy module |
| 11/22/2001 | WO2001088057A1 Method for making a quasi-incompressible phase-change material with low thermal conductivity, and resulting product |
| 11/22/2001 | US20010043838 Skate apparatus for injecting tubing down pipelines |
| 11/22/2001 | US20010042643 Steerable modular drilling assembly |
| 11/22/2001 | CA2475427A1 Downhole signal communication and measurement through a metal tubular |
| 11/21/2001 | EP1156183A1 Double-walled drill pipe |
| 11/21/2001 | EP1155215A2 Mills for wellbore operations |
| 11/21/2001 | EP0782660B1 Centralisers |
| 11/21/2001 | CN2460720Y Speed-uncreasing-type casting elastic vortex centralising device |
| 11/21/2001 | CN1322891A Pumping rod corrector |
| 11/20/2001 | US6318470 Recirculatable ball-drop release device for lateral oilwell drilling applications |
| 11/20/2001 | US6318457 Multilateral well and electrical transmission system |
| 11/17/2001 | CA2308679A1 Drilling tool |
| 11/15/2001 | WO2001086183A1 Control cable |
| 11/15/2001 | WO2001086117A1 Method and device for measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir |
| 11/15/2001 | WO2001086110A1 Subsea riser disconnect and method |
| 11/15/2001 | WO2001011189A3 Apparatus for optimizing production of multi-phase fluid |
| 11/15/2001 | US20010041098 Emergency dump apparatus for buoyancy air tanks on buoyant riser systems |
| 11/15/2001 | US20010040374 Drill pipe assembly |
| 11/15/2001 | US20010040053 Multi-aggressiveness cutting face on PDC cutters and method of drilling subterranean formations |
| 11/15/2001 | CA2408807A1 Subsea riser disconnect and method |
| 11/14/2001 | EP1153196A1 Casing mounted sensors |
| 11/14/2001 | EP1153193A2 Directional drilling apparatus |
| 11/14/2001 | CN2459435Y Drop-proof sucker rod |
| 11/13/2001 | US6315498 Thruster pig apparatus for injecting tubing down pipelines |
| 11/13/2001 | US6315497 Joint for applying current across a pipe-in-pipe system |
| 11/08/2001 | WO2001083937A1 Borehole retention assembly |
| 11/08/2001 | WO2001083932A1 Expandable apparatus for drift and reaming a borehole |
| 11/08/2001 | WO2000066929A9 Rotationally locked tool joint for connecting drill pipe sections together |
| 11/08/2001 | US20010037882 Borehole casing centraliser |
| 11/07/2001 | CN1074517C Threaded joint for tubes |
| 11/07/2001 | CN1074499C Very high pressure-resistant drilling rig |
| 11/06/2001 | US6312637 Method of making a rod guide with both high erodible wear volume and by-pass area |
| 11/06/2001 | US6312024 Threaded assembly of metal tubes designed to contain a corrosive fluid |
| 11/06/2001 | US6311791 Hydraulic underreamer and sections for use therein |
| 11/06/2001 | US6311790 Removable boring head with tapered shank connector |
| 11/01/2001 | WO2001081709A1 Centralizer for wireline tools |
| 11/01/2001 | US20010035291 ADI centralizer |
| 11/01/2001 | US20010035290 Washpipe stabilization system |
| 11/01/2001 | US20010035288 Inductively coupled method and apparatus of communicating with wellbore equipment |
| 10/31/2001 | EP0861363A4 Side pocket mandrel |
| 10/31/2001 | CN2457324Y Anti-bias grinding rotator for deflection well oil tube |
| 10/31/2001 | CN2457323Y Centralizer of pumping rod |
| 10/31/2001 | CN2457322Y Non-rotary drill rod protector |
| 10/31/2001 | CN1319712A Composite mateiral tension rod |
| 10/31/2001 | CN1074106C Pipe screw joint |
| 10/30/2001 | US6308940 Rotary and longitudinal shock absorber for drilling |
| 10/30/2001 | US6308788 Conductive medium for openhole logging and logging while drilling |
| 10/30/2001 | US6308783 Wellbore flow control device |
| 10/30/2001 | US6308561 Well logging apparatus |
| 10/30/2001 | CA2059910C Adjustable drilling mechanism |
| 10/28/2001 | CA2315607A1 Multi-use tubing disconnect |
| 10/25/2001 | WO2001041549A3 Collapsible buoyancy device for risers on offshore structures |
| 10/25/2001 | US20010033164 Focused through-casing resistivity measurement |
| 10/25/2001 | US20010032722 Stand-off device |
| 10/24/2001 | EP1147283A1 Multilateral well and electrical transmission system |
| 10/24/2001 | EP0979343B1 Apparatus for controlling the motion of a string of tubulars in a wellbore |
| 10/24/2001 | CN2455920Y Casing centrilizer for drilling out |
| 10/24/2001 | CN2455919Y Non-rotary joint |
| 10/24/2001 | CN2455918Y Torque anchor for preventing oil pipe from being loosen |
| 10/24/2001 | CN2455917Y Thermal insulating pipe for oil production and steam injection |
| 10/23/2001 | US6305944 Electrical connector |
| 10/23/2001 | US6305723 Tool joint and drill pipe made therefrom |
| 10/23/2001 | US6305476 Deep well flexible hose and method of use |
| 10/18/2001 | WO2001077491A2 Electropolishing method for oil field tubular goods and drill pipe |
| 10/18/2001 | WO2001077482A1 Flexible hose with thrusters for horizontal well drilling |
| 10/18/2001 | WO2001025590A3 Cable protection in blow-out preventers |
| 10/18/2001 | US20010030076 Receiver array using tubing conveyed packer elements |
| 10/18/2001 | US20010030065 Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics |
| 10/18/2001 | US20010030047 Auto-extending/retracting electrically isolated conductors in a segmented drill string |