| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/30/2008 | CN101168231A Pumping rod centralizer retainer ring assembling machine |
| 04/29/2008 | US7364203 Reinforcement for arched type structure with beveled screwed ends |
| 04/29/2008 | US7363691 Method and apparatus for forming a mono-diameter wellbore casing |
| 04/29/2008 | US7363690 Method and apparatus for forming a mono-diameter wellbore casing |
| 04/29/2008 | CA2451358C Electrical conducting system |
| 04/29/2008 | CA2339715C Side entry sub |
| 04/29/2008 | CA2244273C A device for transferring fluid between equipment on the seabed and a surface unit |
| 04/24/2008 | WO2008048139A1 Method for commissioning oil-and-gas threaded pipes and a system for carrying out said method |
| 04/24/2008 | WO2008004079A3 Connector arrangement with penetrator in a submersible electrical assembly |
| 04/24/2008 | US20080093922 Armored flat cable signalling and instrument power acquisition |
| 04/24/2008 | US20080093089 System for Lining a Wellbore Casing |
| 04/23/2008 | EP1913898A2 Helical tubing |
| 04/23/2008 | EP1913231A1 Interface and method for wellbore telemetry system |
| 04/23/2008 | EP1913230A1 Tubular member connection |
| 04/23/2008 | EP1913229A1 Flexible tubular member (28) subsea system provided with a controllable curvature flexible pipe |
| 04/23/2008 | EP1913228A2 Surface communication apparatus and method for use with string telemetry |
| 04/23/2008 | CN201050315Y Locking device |
| 04/23/2008 | CN201050314Y Sucker rod multifunctional centralizer |
| 04/23/2008 | CN201050313Y Down-hole pipe string protector |
| 04/23/2008 | CN201050312Y Multi-functional pumping rod protector |
| 04/23/2008 | CN201050311Y Pumping rod wear-resisting coupling |
| 04/23/2008 | CN201050310Y Flexible composite high pressure vertical tube |
| 04/23/2008 | CN201050309Y Eccentric wear-proof limit switch pumping rod |
| 04/23/2008 | CN101166944A Drill rod |
| 04/23/2008 | CN101166928A Pseudo two-step connection |
| 04/23/2008 | CN101165306A Sucker rod cold-drawing recovery production process |
| 04/23/2008 | CA2565220A1 Apparatus and method for installing wellbore string devices |
| 04/22/2008 | US7361411 Hardfacing alloy, methods, and products |
| 04/22/2008 | US7360796 Electrical isolation connector subassembly for use in directional drilling |
| 04/22/2008 | US7360594 Drilling with casing latch |
| 04/22/2008 | US7360487 Connector for perforating gun tandem |
| 04/22/2008 | CA2298901C Integral joint for the connection of two pipes |
| 04/22/2008 | CA2238334C Autonomous downhole oilfield tool |
| 04/17/2008 | WO2008044966A1 Threaded joint for an oil-well tubing |
| 04/17/2008 | WO2008024791A3 Releasing and recovering tool |
| 04/17/2008 | WO2007124018A3 Mechanical parts having increased wear resistance |
| 04/17/2008 | US20080089745 Method And Device For Connecting A Riser To A Target Structure |
| 04/17/2008 | US20080087449 Handheld rotary tool |
| 04/17/2008 | US20080087423 Method and Apparatus for a Monodiameter Wellbore, Monodiameter Casing, Monobore, and/or Monowell |
| 04/17/2008 | US20080087351 Composite Pipe And A Method Of Manufacturing A Composite Pipe |
| 04/16/2008 | EP1910728A1 Connection element for producing a fluid-tight screw connection, and method for the production thereof |
| 04/16/2008 | EP1910641A1 Adjustable winged centering tool for use in pipes with varying diameter |
| 04/16/2008 | CN201047264Y Multifunctional oil well protecting equipment |
| 04/16/2008 | CN201047257Y Anti-releasing device for sucker rod |
| 04/16/2008 | CN201047254Y Novel screw drilling tool |
| 04/16/2008 | CN201047251Y Novel device for drilling mousehole |
| 04/16/2008 | CN201047168Y Line shape driven multifunctional machine |
| 04/16/2008 | CN101163850A 具有扰动的螺纹 Having a threaded disturbance |
| 04/15/2008 | US7357200 Earth auger |
| 04/15/2008 | US7357198 Downhole apparatus |
| 04/15/2008 | US7357190 Radial expansion of tubular members |
| 04/15/2008 | US7357178 In and relating to downhole tools |
| 04/15/2008 | CA2430303C Improvements to disconnect devices |
| 04/15/2008 | CA2320866C Flexible conduit for static use in a corrosive environment |
| 04/15/2008 | CA2282342C Bottomhole assembly and methods of use |
| 04/15/2008 | CA2225570C Method and apparatus for making a pig in a vertical riser pipe |
| 04/11/2008 | CA2606124A1 Submersible direct-current electric motor |
| 04/10/2008 | WO2008042945A2 Wellbore casing and method of forming same |
| 04/10/2008 | WO2008041859A1 Loading system |
| 04/10/2008 | US20080083362 Water intake riser |
| 04/09/2008 | EP1907713A1 A manual locking assembly for a quick connect coupling |
| 04/09/2008 | CN201045284Y Polygon conical surface matched splicing type auger stem |
| 04/09/2008 | CN201045283Y Well drilling well completion casing rolling guide shoe |
| 04/09/2008 | CN201045282Y Petroleum drill pipe joint capable of transmitting electric power and signal |
| 04/09/2008 | CN101158273A Slip-type casing tube break prevention compensation pipe |
| 04/09/2008 | CN101158272A Oil well shearing type casing tube break prevention compensation pipe |
| 04/09/2008 | CN100379936C Automatically controlled rotation-controllable drilling system |
| 04/08/2008 | US7353891 Systems and methods for the installation of earth anchors |
| 04/08/2008 | US7353888 Tension/collar/reamer assemblies and methods |
| 04/08/2008 | US7353887 Control systems and methods for active controlled bottomhole pressure systems |
| 04/08/2008 | US7353871 Downhole automatic tool release and method of use |
| 04/08/2008 | US7353868 Wireline coupler |
| 04/08/2008 | US7353867 Whipstock assembly and method of manufacture |
| 04/08/2008 | CA2487222C Downhole tool sensor system and method |
| 04/08/2008 | CA2444555C Apparatus and methods for drilling with casing |
| 04/08/2008 | CA2378704C Connector and method of use of the connector |
| 04/08/2008 | CA2326995C Rotating casing assembly and method |
| 04/03/2008 | WO2008037360A2 Rod driver |
| 04/03/2008 | DE102006059171B3 Double drilling-rod type drilling installation, has connection on outer rod for forming liquid connection to annular cavity between rods |
| 04/02/2008 | EP1904714A2 Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 04/02/2008 | CN201043444Y Steel-based composite pipeline joint |
| 04/02/2008 | CN100378294C Device for connecting anchoring rod to drilling tool |
| 04/01/2008 | US7350830 Pressure relieved thread connection |
| 04/01/2008 | US7350584 Formed tubulars |
| 04/01/2008 | US7350569 Separable plug for use in a wellbore |
| 04/01/2008 | US7350566 Well completion with merged influx of well fluids |
| 04/01/2008 | CA2445468C Metal ring gasket for a threaded union |
| 03/27/2008 | WO2008036498A1 Methods and apparatus for attenuating drillstring vibrations |
| 03/27/2008 | WO2008035977A1 Centralizing device for an elongated body in a mouse hole machine |
| 03/27/2008 | WO2008035114A1 Fairing |
| 03/27/2008 | WO2008015402A3 Running bore-lining tubulars |
| 03/26/2008 | EP1903178A2 Three dimensional steerable system |
| 03/26/2008 | EP1203177B1 Expandable joint connector |
| 03/26/2008 | CN201041006Y Hydraulic full-automatic drill rod clamping means |
| 03/26/2008 | CN201041005Y Anti-grinding pair of hollow pumping rod |
| 03/26/2008 | CN201041004Y Water injection well oil pipe for resisting sulfate-reducing bacteria corrosion coating |
| 03/26/2008 | CN201041001Y Drilling well bottom bushing longitudinal locking device |
| 03/26/2008 | CN201041000Y Drilling well bottom bushing peripheral locking device |
| 03/26/2008 | CN100376763C Strapdown type stable platform apparatus |
| 03/25/2008 | US7347459 Coupling for drilling-with-casing operations |