| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/10/2001 | US6213205 Pressure activated bendable tool |
| 04/10/2001 | US6213203 Lock mechanism for use with a downhole device |
| 04/10/2001 | US6213202 Separable connector for coil tubing deployed systems |
| 04/10/2001 | US6213045 Flotation system and method for off-shore platform and the like |
| 04/10/2001 | CA2156984C Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 04/08/2001 | CA2496102A1 Casing clamp |
| 04/05/2001 | WO2001023704A1 Tool assembly and monitoring applications using same |
| 04/05/2001 | WO2001007748A3 Mechanism for dropping a plurality of balls into tubulars |
| 04/05/2001 | WO1996041931B1 Subsurface signal transmitting apparatus |
| 04/04/2001 | EP1088150A1 Drill rod coupling |
| 04/04/2001 | EP0894353A4 Underground well electrical cable transition, seal and method |
| 04/04/2001 | CN2426010Y Flexible damping sub |
| 04/04/2001 | CN2426009Y Drill rod joint for large diameter hole drilling |
| 04/04/2001 | CN1064106C Lower drilling assembly and drilling method therefor |
| 04/03/2001 | US6210075 Spar system |
| 04/03/2001 | US6209668 Earth-boring bit with improved cutting structure |
| 04/03/2001 | US6209667 Drill string fitting |
| 04/03/2001 | US6209660 Drill bit shear relief for horizontal directional drilling of rock formations |
| 04/03/2001 | US6209648 Method and apparatus for connecting a lateral branch liner to a main well bore |
| 04/03/2001 | US6209638 Casing accessory equipment |
| 04/03/2001 | US6209636 Wellbore primary barrier and related systems |
| 04/03/2001 | US6209635 Positioning and conveying well apparatus and method |
| 04/03/2001 | US6209632 Subsurface signal transmitting apparatus |
| 04/03/2001 | CA2222205C Spoolable coiled tubing completion system |
| 04/01/2001 | CA2285035A1 Dual tubing system for producing wells |
| 03/29/2001 | WO2001021932A1 Apparatus and method for providing electrical transmission of power and signals in a directional drilling apparatus |
| 03/28/2001 | EP1086336A1 Pipeline monitoring systems |
| 03/28/2001 | EP1086292A1 A drilling tool |
| 03/28/2001 | CN1289019A Screwed pipe adapter with high-resistance to over torque and pressure |
| 03/27/2001 | USRE37109 Method of and device for production of hydrocarbons |
| 03/27/2001 | US6206742 Buoyancy device and method for using same |
| 03/27/2001 | US6206614 Floating offshore drilling/producing structure |
| 03/27/2001 | US6206436 Differential wedge thread for threaded connector |
| 03/27/2001 | US6206133 Clamped receiver array using tubing conveyed packer elements |
| 03/27/2001 | US6206117 Drilling structure with non-axial gage |
| 03/27/2001 | US6206111 High pressure internal sleeve for use with easily drillable exit ports |
| 03/27/2001 | CA2188531C Method and tool for use in commencing the drilling of a deviated well |
| 03/24/2001 | CA2320396A1 Improved rotary cone bit for cutting removal |
| 03/22/2001 | WO2001020124A1 Method and apparatus for through tubing gravel packing, cleaning and lifting |
| 03/22/2001 | WO2001020120A1 Method and system for storing gas for use in offshore drilling and production operations |
| 03/22/2001 | WO2001020119A1 An apparatus and method for rotating a portion of a drill string |
| 03/22/2001 | WO2001019669A1 Smooth sleeves for drag and viv reduction of cylindrical structures |
| 03/22/2001 | DE10042209A1 High pressure pipe connector comprises threaded male connectors on pipe ends with noses which lodge against shoulders on central section of double-ended socket with threaded ends |
| 03/21/2001 | CN2424295Y Novel sucker rod |
| 03/20/2001 | US6202769 Drilling stabilizer |
| 03/20/2001 | US6202764 Straight line, pump through entry sub |
| 03/20/2001 | US6202763 “Twin-impact” double-blow drilling apparatus |
| 03/20/2001 | US6202752 Wellbore milling methods |
| 03/20/2001 | US6202743 Underground well electrical cable transition with seals and drain |
| 03/15/2001 | WO2001018349A1 Method for installing an undersea catenary riser |
| 03/15/2001 | CA2318713A1 Device for mounting a cable and/or control lines to a tubing string or other tubular structure |
| 03/15/2001 | CA2316737A1 Method and system for exploiting natural resources under the seabed |
| 03/14/2001 | EP1083292A1 Interchangeable bit system for directional boring |
| 03/14/2001 | EP1082730A1 Flexible armored communication cable and method of manufacture |
| 03/14/2001 | CN2423396Y Sucker rod |
| 03/13/2001 | US6200685 Titanium molybdenum hafnium alloy |
| 03/13/2001 | US6200180 Mooring system for tanker vessels |
| 03/13/2001 | US6199914 Drilling quick connectors |
| 03/13/2001 | US6199645 Engineered enhanced inserts for rock drilling bits |
| 03/13/2001 | US6199636 Open barrel cage |
| 03/13/2001 | CA2017997C Well tool |
| 03/09/2001 | CA2281727A1 Single string rotary pump system |
| 03/08/2001 | WO2001016516A1 Threaded joint for oil well pipe |
| 03/08/2001 | WO2001016456A1 Releasable connector |
| 03/08/2001 | WO2001015970A1 Flotation system and method for off-shore platform |
| 03/07/2001 | CN2422444Y Ball oil well casing centralising device |
| 03/06/2001 | US6196768 Spar fairing |
| 03/06/2001 | US6196766 Apparatus for movement along an underground passage and method using same |
| 03/06/2001 | US6196598 Straight hole drilling system |
| 03/06/2001 | US6196334 Excavating tool |
| 03/06/2001 | US6196325 Heavy-duty logging and perforating cablehead for coiled tubing and method for releasing wireline tool |
| 03/01/2001 | WO2001014687A1 A hybrid riser configuration |
| 03/01/2001 | WO2001014686A1 A device by a protective cap for pipes |
| 03/01/2001 | WO2001014684A2 Method of lubricating and lubricant spraying apparatus |
| 02/28/2001 | EP1079064A2 Pressure equalizing ring for connections between drive-in pipes |
| 02/28/2001 | EP1078190A1 Heavy weight drill pipe |
| 02/28/2001 | EP1078145A2 Coupling with shape-memory material , disconnecting tool with a piston and coupling with valves |
| 02/28/2001 | EP1078144A1 Hybrid pipe for great depth |
| 02/28/2001 | EP1077869A1 Submerged pipeline manifold for offloading mooring buoy and method of installation |
| 02/28/2001 | CN2421407Y Electrothermic oil tube insulation centralizer |
| 02/28/2001 | CN2421406Y Electrothermic oil tube insulation pup joint |
| 02/28/2001 | CN2421405Y Rotary oil tube anchor device |
| 02/28/2001 | CN2421404Y Free joint for hollow pumping rod |
| 02/28/2001 | CN1285456A Flexible continuous band type carbon fiber sucker rod and connector thereof |
| 02/28/2001 | CN1062636C Coupling for anchor bars |
| 02/28/2001 | CN1062635C Drilling method and bit assembly to realise method |
| 02/28/2001 | CA2317282A1 Releasable connector |
| 02/27/2001 | US6193441 Emergency dump apparatus for buoyancy air tanks on buoyant riser systems |
| 02/27/2001 | US6193431 Fiberglass sucker rod end fitting |
| 02/27/2001 | US6192983 Coiled tubing strings and installation methods |
| 02/22/2001 | WO2001012945A1 Bit connector |
| 02/22/2001 | WO2000019060A8 Tubular filling system |
| 02/22/2001 | DE19938577A1 High pressure injection drill rod has interlocked insertion and holding ends to give a precise positioning of the jet head to inject liquid cement to seal and stabilize the walls of the pile drilling |
| 02/22/2001 | DE19937344C1 Druckausgleichsring Pressure equalization ring |
| 02/21/2001 | EP1077307A1 Cable connection between two rods of an auger |
| 02/21/2001 | EP1077305A1 Shank adapter |
| 02/21/2001 | EP1076756A1 Apparatus, system and method for connecting coiled tubing to a member |
| 02/21/2001 | EP1076755A1 Cleaning and lubricating device for threads, especially for drill pipes |
| 02/21/2001 | EP0900317B1 Apparatus and method for downhole drilling communications |
| 02/21/2001 | CN2420418Y Anti-eccentrically worn device for oil pipe |