Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
09/2003
09/03/2003CN2570443Y Stable arch type oil and gas well casing centralizer
09/03/2003CN2570442Y Oil pumping apparatus having rotating oil pipe and pumping rod
09/03/2003CN2570441Y Sand flushing pipe fitting of sand-proof well
09/03/2003CN2570440Y Straight welding type outer heavy weight tubing
09/03/2003CN2570439Y Friction welding type outer heavy weight tubing
09/03/2003CN2570438Y Multiple function pumping rod
09/03/2003CN1440497A Tubular threaded joint capable of being subjected to diametral expansion
09/03/2003CN1440485A Well managment System
09/02/2003US6613982 Cable protection in blow-out preventers
09/02/2003US6612526 High strength buoyant clamp assembly and method of using same
09/02/2003US6612370 Composite hybrid riser
08/2003
08/28/2003WO2003071089A1 Drill string member
08/28/2003WO2003071088A1 Drill member for rock drilling and a method for manufacturing the drill member
08/28/2003WO2003071084A2 System for forming a window and drilling a sidetrack wellbore
08/28/2003WO2003070561A1 Arrangement at a riser tower
08/28/2003WO2003035811A8 Remediation of a hydrocarbon containing formation
08/28/2003US20030160446 Threaded joint for steel pipes
08/28/2003US20030159834 Centralizer
08/28/2003US20030159823 Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir
08/28/2003US20030159764 Threaded joint for steel pipes and process for the surface treatment thereof
08/27/2003EP1338754A2 Method for forming a window in a tubular and apparatus for use in said method
08/27/2003EP1337735A1 Thread joint for percussive drilling and parts therefor
08/27/2003EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore
08/27/2003CN2568801Y Short section wax scraping centering guide of self rotating sucker rod
08/27/2003CN2568800Y Connecting sleeve of drill shank
08/27/2003CN2568799Y Connector with controllable cut-off parts, its screen tube joint and screen tube
08/27/2003CN2568798Y Oil bushing separation sucking, lowering water and oil increasing pipe post
08/27/2003CN1119498C Device related to resers
08/26/2003US6610441 Annular pack
08/26/2003US6609735 Threaded and coupled connection for improved fatigue resistance
08/26/2003US6609579 Drilling assembly with a steering device for coiled-tubing operations
08/26/2003US6609567 Tubing hanger with lateral feed-through connection
08/21/2003WO2003069112A1 Wellhead seal unit
08/21/2003WO2003036043A3 Forming openings in a hydrocarbon containing formation using magnetic tracking
08/21/2003WO2003019756A8 Unipolar transverse magnetic flux machine
08/21/2003US20030158269 Made with anionic or cationic polymers, a smaller amount of a surfactant having a charge opposite that of the polymer, and a hydrophobic alcohol.
08/21/2003US20030156918 Modular thread connection with high fatigue resistance
08/21/2003US20030155769 Coupling for rotary drill strings
08/21/2003US20030155156 Two string drilling system using coil tubing
08/21/2003US20030155155 Expandable underreamer/stabilizer
08/21/2003US20030155120 In-well monitoring and flow control system
08/20/2003EP1336720A2 Method for forming a window in a tubular and apparatus for use in said method
08/20/2003EP1224376B1 Sleeve for stiffening an output shaft on a mill
08/20/2003EP1070193B1 Two-step, differential diameter wedge threaded connector
08/20/2003CN2567335Y Centralising device for band sucker rod
08/20/2003CN1437673A Tubular threaded joint with reinforced stop
08/20/2003CN1118656C Screw joint for oil well pipe
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/14/2003WO2003067137A1 Conduit pipe
08/14/2003WO2003067023A1 Method and arrangement by a workover riser connection
08/14/2003WO2003067018A2 Well system
08/14/2003WO2003067016A2 Bi-directional thruster pig apparatus and method of utilizing same
08/14/2003WO2003050387A3 Friction reducing composition and method
08/14/2003US20030150651 Steerable horizontal subterranean drill bit having offset cutting tooth paths
08/14/2003US20030150650 Steerable horizontal subterranean drill bit having an offset drilling fluid seal
08/14/2003US20030150649 Steerable horizontal subterranean drill bit having a one bolt attachment system
08/14/2003US20030150618 Internal beam buoyancy system for offshore platforms
08/14/2003US20030150611 Minimum clearance bow-spring centralizer
08/14/2003US20030150610 Device for sealing a drill hole and for discharging drillings or stripped extraction material
08/14/2003CA2755094A1 Well system
08/13/2003EP1335107A2 A method for collecting geological data
08/13/2003EP1335106A2 Casing data relay
08/13/2003EP1335105A2 A method for collecting geological data
08/13/2003EP1335104A2 Method for preventing formation fracturing
08/13/2003EP1335103A2 Method of determining the curing of cement downhole
08/13/2003EP1334257A2 Jar with electrical conductor
08/13/2003EP1261801A4 Recirculatable ball-drop release device for lateral oilwell drilling applications
08/13/2003CN2565971Y Butt-joint casing centralizer
08/13/2003CN2565970Y Breaking-proof anti-deviation centralizer for sucker rod
08/13/2003CN2565969Y Pipe string compensation packer top-proof device
08/13/2003CN2565968Y Upsetting anti-tripping solid sucker rod
08/13/2003CN2565967Y Multifunctional tubing anchor
08/13/2003CN2565966Y Rod body no-fastening connection anti-tripping solid sucker rod
08/13/2003CN2565965Y Rod body no-fastening connection anti-tripping hollow sucker rod
08/12/2003US6604763 Expandable connector
08/12/2003US6604578 Tubular filling system
08/12/2003US6604550 Composite spoolable tube
08/12/2003CA2391732C Production tubing joint
08/07/2003WO2003064807A1 Riser buoyancy system
08/07/2003US20030148638 Technique for providing power to a completion used in a subterranean environment
08/07/2003US20030145985 Centralizer for wireline tools
08/06/2003EP1332270A2 Integrated modular connector in a drill pipe
08/06/2003EP1234090B1 Pipe connecting method
08/06/2003CN2564734Y Double-wheel rolling type pumping rod centralizer
08/06/2003CN2564733Y Screw pumping rod centralizer
08/06/2003CN2564732Y Locking-type pumping rod centralizer
08/06/2003CN2564731Y Centralizing decoupling-preventing device
08/06/2003CN2564730Y Special connector for pumping rod
08/06/2003CN2564729Y Injection suction dual-purpose energy-saving oil pipe for producing heavy oil
08/05/2003US6604063 Oilfield equipment identification method and apparatus
08/05/2003US6601656 Method and apparatus for drilling an offshore underwater well
08/05/2003US6601531 Floating support including a central cavity comprising a plurality of compartments
08/05/2003CA2275850C Well logging apparatus
08/05/2003CA2092479C Flowline safety joint
07/2003
07/31/2003WO2003062590A1 Two string drilling system using coil tubing
07/31/2003WO2003062589A1 Two string drilling system
07/31/2003WO2003062588A1 Radio frequency identification tags for oil drill strings
07/31/2003WO2003062586A1 Down-the-hole drill hammer.
07/31/2003WO2003062585A1 Driver
07/31/2003WO2003062582A2 Disengageable downhole tool
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