| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/02/2003 | EP1270868A1 A bi-centre bit for drilling out through a casing shoe |
| 01/02/2003 | EP1269059A1 Fatigue-resistant threaded bevelled tubular element |
| 01/02/2003 | EP1268115A1 Method of joining metal oilfield tubulars and well provided therewith |
| 01/02/2003 | EP1131533A4 Tubular filling system |
| 01/02/2003 | EP0811109B1 Metal coiled tubing with signal transmitting passageway |
| 01/01/2003 | CN2528921Y Casing floating coupling |
| 12/31/2002 | CA2151525C Subsurface signal transmitting apparatus |
| 12/27/2002 | WO2002104074A1 Tubing system and extrusion method |
| 12/27/2002 | WO2002103854A2 Conductor system |
| 12/27/2002 | WO2002103161A2 Perforating gun assembly for use in multi-stage stimulation operations |
| 12/27/2002 | WO2002103156A1 Method for preparing wellbore casing for installation |
| 12/27/2002 | WO2002103155A1 Casing wear band and method of attachment |
| 12/27/2002 | WO2002103154A1 Pipe centralizer and method of attachment |
| 12/27/2002 | WO2002103153A1 Underwater pipeline connection joined to a riser |
| 12/27/2002 | WO2002103150A2 Tubing expansion |
| 12/27/2002 | WO2002102653A1 Seawater intake riser system |
| 12/27/2002 | CA2450749A1 Pipe centralizer and method of attachment |
| 12/27/2002 | CA2450651A1 Casing wear band and method of attachment |
| 12/26/2002 | US20020197132 High strength spray metal tubular coupling |
| 12/25/2002 | CN1386953A Screw joint for oil pipe or casing |
| 12/25/2002 | CN1097134C Grouting pipe equipment and method of grouting using same for underground water well |
| 12/24/2002 | US6497295 Torque limiting tool |
| 12/24/2002 | US6497290 Method and apparatus using coiled-in-coiled tubing |
| 12/24/2002 | US6497289 Method of creating a casing in a borehole |
| 12/24/2002 | US6497286 Method and apparatus for drilling a plurality of offshore underwater wells |
| 12/24/2002 | CA2213541C Metal coiled tubing with signal transmitting passageway |
| 12/19/2002 | WO2002081864A3 Expandable coaxial tubings |
| 12/19/2002 | US20020193004 Wired pipe joint with current-loop inductive couplers |
| 12/19/2002 | US20020189865 Rock drill |
| 12/19/2002 | US20020189863 Drilling bit for drilling while running casing |
| 12/19/2002 | US20020189816 Wellbore casing |
| 12/19/2002 | US20020189803 Subsurface signal transmitting apparatus |
| 12/19/2002 | US20020189802 Perforating gun assembly for use in multi-stage stimulation operations |
| 12/19/2002 | DE10129064A1 Gesteinsbohrwerkzeug Rock drilling |
| 12/18/2002 | EP1267033A1 Rock drilling tool |
| 12/18/2002 | EP1266117A1 A riser device |
| 12/18/2002 | EP0815377B1 Threaded pipe connection |
| 12/18/2002 | CN2526495Y Sphere-shaped cardan shaft assembly for screw drilling tool |
| 12/18/2002 | CN2526494Y Sucker rod bearing capable of preventing pipe from eccentrically being worn |
| 12/18/2002 | CN2526493Y High-precision positioning screw jointing structure for rock bit |
| 12/17/2002 | US6494495 Locked connection |
| 12/17/2002 | US6494275 Rock drill bit having retrac teeth and method for its manufacturing |
| 12/17/2002 | US6494274 Axle, a friction reducing fitting and an axle installation method |
| 12/17/2002 | US6494272 Drilling system utilizing eccentric adjustable diameter blade stabilizer and winged reamer |
| 12/17/2002 | US6494267 Wellhead assembly for accessing an annulus in a well and a method for its use |
| 12/17/2002 | US6494264 Wellbore flow control device |
| 12/15/2002 | CA2350681A1 Pipe centralizer and method of attachment |
| 12/12/2002 | WO2002099245A1 Use of helically wound tubular structure in the downhole environment |
| 12/12/2002 | WO2002099243A1 Apparatus and method for rotary bored drilling |
| 12/12/2002 | WO2002086287A3 Conveying instrumentation within a borehole |
| 12/12/2002 | WO2002016727A3 Engineered material buoyancy system, device, and method |
| 12/12/2002 | US20020185314 Anti-rotation device for a steerable rotary drilling device |
| 12/12/2002 | US20020185275 Method and apparatus for orienting perforating devices and confirming their orientation |
| 12/12/2002 | US20020185188 Composite tubing |
| 12/11/2002 | EP1264960A2 Drilling tool with non rotating sleeve |
| 12/11/2002 | EP1264077A1 Subterranean well completion apparatus with flow assurance system and associated methods |
| 12/11/2002 | EP1264076A1 Multi-purpose float equipment and method |
| 12/11/2002 | EP1264069A2 Wellbore circulation system, kelly bushing, kelly and tong |
| 12/11/2002 | EP1264068A1 Threaded spacer |
| 12/11/2002 | CN2525244Y Ball type centralizer |
| 12/11/2002 | CN2525243Y 滚轮扶正器 Wheel centralizer |
| 12/11/2002 | CN2525242Y Bow spring sleeve centralizer |
| 12/11/2002 | CN2525241Y Screw pump reverse rotation releasing unit |
| 12/11/2002 | CN2525240Y Anti-wear oil pumping rod |
| 12/11/2002 | CN1095784C Device for prodn. of hydrocarbons |
| 12/11/2002 | CN1095783C System for anchring ships |
| 12/10/2002 | US6491107 Method and apparatus for running spooled tubing into a well |
| 12/10/2002 | US6491097 Abrasive slurry delivery apparatus and methods of using same |
| 12/10/2002 | US6490748 Flexible drill rod |
| 12/05/2002 | WO2002097233A1 Wear sleeve |
| 12/05/2002 | WO2002097232A1 Method and arrangement for rock drilling and tool and rock drill used in rock drilling |
| 12/05/2002 | WO2002066792B1 High tensile loading top entry sub and method |
| 12/05/2002 | WO2001094831A1 Taper threaded joint |
| 12/05/2002 | US20020182331 Adhering an anti-seize metallic film onto the surface of threads and coating the anti-seize protected threads with an environmentally friendly lubricating composition |
| 12/05/2002 | US20020179336 Drilling tool with non-rotating sleeve |
| 12/05/2002 | US20020179306 Use of helically wound tubular structure in the downhole environment |
| 12/05/2002 | CA2411851A1 Taper threaded joint |
| 12/04/2002 | EP1261974A1 In-well monitoring and flow control system |
| 12/04/2002 | EP1261801A1 Recirculatable ball-drop release device for lateral oilwell drilling applications |
| 12/04/2002 | EP1261799A1 Centraliser |
| 12/04/2002 | EP1261678A2 Conductive medium for openhole logging and logging while drilling |
| 12/04/2002 | EP1261448A1 Method of assembling pipe joints |
| 12/04/2002 | CN2523943Y Rolling sucking rod stabilizer |
| 12/04/2002 | CN2523942Y Rotary stabilizer |
| 12/04/2002 | CN2523941Y Auxiliary tool for oil sucking pump against sand blocking |
| 12/04/2002 | CN2523940Y Safety joints |
| 12/03/2002 | US6488447 Composite buoyancy module |
| 12/03/2002 | US6488104 Directional drilling assembly and method |
| 11/28/2002 | WO2002095184A1 Apparatus and method for connecting riser between a floating vessel and a subsea structure |
| 11/28/2002 | WO2002095181A1 Radially expandable tubular with supported end portion |
| 11/28/2002 | WO2002070858A3 Drilling device comprising a rotational drive |
| 11/28/2002 | US20020176748 Apparatus and method for connecting riser between a floating vessel and a subsea structure |
| 11/27/2002 | EP1260670A1 Method for dimensioning a drilling riser |
| 11/27/2002 | EP1259710A1 Oilwell casing electrical power pick-off points |
| 11/27/2002 | EP1259708A2 Wireless power and communications cross-bar switch |
| 11/27/2002 | EP1259707A1 Wireless downhole well interval inflow and injection control |
| 11/27/2002 | EP1259706A2 Use of downhole high pressure gas in a gas-lift well |
| 11/27/2002 | EP1259705A1 Electro-hydraulically pressurized downhole valve actuator |
| 11/27/2002 | EP1259704A1 Thread joint and rock drill element |
| 11/27/2002 | EP1259703A1 Thread joint and rock drill element |