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)
07/2003
07/31/2003US20030143035 Engineered material buoyancy system and device
07/31/2003US20030141718 Pipe joint
07/31/2003US20030141671 Metal-to-metal sealing system
07/31/2003US20030141112 Method and apparatus for drilling wells
07/31/2003US20030141111 Drilling method
07/31/2003US20030141070 Riser buoyancy system
07/31/2003US20030141069 Riser buoyancy system
07/31/2003US20030141063 Methods and apparatus for forming a lateral wellbore
07/31/2003CA2470227A1 Down-the-hole drill hammer.
07/31/2003CA2470211A1 Driver
07/30/2003EP1066449B1 Rotating connector with compensating unit
07/30/2003EP1034354B1 Mill for use in a wellbore and method of milling
07/30/2003CN2563288Y 过渡接头 Transition joints
07/30/2003CN1433510A Taper threaded joint
07/29/2003US6598688 Drill steel for drilling mine roofs and associated method of drilling bores
07/29/2003US6598687 Three dimensional steerable system
07/24/2003WO2003059549A1 Protective sleeve for threaded connections for expandable liner hanger
07/24/2003US20030136587 Shaped element for rotary drilling equipment, and a drillrod including at least one shaped element
07/23/2003EP1329586A1 Profiled element for rotary drilling equipment
07/23/2003EP1328702A2 Drill string member
07/23/2003EP1328701A2 System, method and apparatus for deploying a data resource within a threaded pipe coupling
07/23/2003EP1328700A1 Drilling tool
07/23/2003EP0862679B1 Downhole equipment
07/23/2003CN2561912Y 井下油管锚定器 Downhole tubing anchors
07/23/2003CN2561911Y Continuous sucker belt and joint in oil well
07/23/2003CN1115466C Drill rod coupling
07/22/2003US6595725 Tethered buoyant support for risers to a floating production vessel
07/22/2003US6595303 Rotary steerable drilling tool
07/22/2003US6595293 Apparatus and method for connecting riser between a floating vessel and a subsea structure
07/22/2003US6595284 Wire guard device for wells
07/22/2003US6594881 Bit torque limiting device
07/17/2003WO2003048522A3 Severe dog leg swivel for tubing conveyed perforating
07/17/2003WO2003036040A3 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
07/17/2003US20030132633 Joint with tapered threads
07/17/2003US20030132035 Step tube rod, and drilling machine
07/17/2003US20030132005 Torque reduction tool
07/16/2003EP1327095A1 Coupling apparatus
07/16/2003EP1327050A1 Cement shoe assembly for monobore well
07/16/2003EP1060321B1 An axle, a friction reducing fitting and an axle installation method
07/16/2003CN2560758Y Spiral sharp-rib roofbolt and spiral-rib drill rod for drilling spiral sharp-rib roofbolt hole
07/16/2003CN2560746Y Rod position-limiting ring
07/16/2003CN1114749C Protector for joint of sucker rod to prevent dropping off and wearing off
07/15/2003US6594608 Method for determining a flexible pipe structure
07/15/2003US6591913 System and method for lessening impact on Christmas trees during downhole operations involving Christmas trees
07/15/2003US6591912 Full bore automatic gun release module
07/15/2003CA2187458C Method for facing a substrate
07/10/2003WO2003036032A3 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids
07/10/2003WO2003025330A3 Liquid seal for wet roof bit
07/10/2003US20030127857 Manually actuated mechanical locking swivel
07/10/2003US20030127251 Flexible hose with thrusters for horizontal well drilling
07/10/2003DE10204974C1 Feed pipe for cement has pipe segments with clamping rings made of steel preloaded to offset internal pressures
07/09/2003CN2559773Y Taper pin centralizer
07/09/2003CN2559772Y Down hole safety protection short joint of drill pipe transmission well-logging
07/09/2003CN2559771Y Glass-reinforced plastics continuous sucker rod
07/09/2003CN1429261A Method for making quasi-incompressible phase-change material with low thermal conductivity, and resulting product
07/09/2003CN1428496A Drilling rod capable of placing exploration explosive into downhole, connector and series disposable drill bits
07/08/2003US6589343 Device for application of dope on male threads
07/08/2003US6588714 Cable protector and support
07/08/2003US6588517 Boring apparatus
07/08/2003US6588515 Drill bit for directional drilling
07/08/2003US6588509 Well casing installation and removal apparatus and method
07/08/2003CA2254441C Apparatus for drilling lateral drainholes from a wellbore
07/08/2003CA2156398C Drill pipe
07/03/2003WO2003054342A1 A pressure control system for a wet connect/disconnect hydraulic control line connector
07/03/2003WO2003053125A2 System and method for lessening impact on christmas trees during downhole operations involving christmas trees
07/03/2003WO2003036035A3 In situ upgrading of coal
07/03/2003WO2003036031A3 Seismic monitoring of in situ conversion in a hydrocarbon containing formation
07/03/2003WO2003035811A9 Remediation of a hydrocarbon containing formation
07/03/2003US20030125215 Friction reducing composition and method
07/03/2003US20030122373 Locking arrangement for a threaded connector
07/03/2003US20030121703 Electrically sequenced tractor
07/03/2003US20030121558 Tube anchored to structure; pulling expansion structure through tube; well bore casing; controlling fluid flow
07/02/2003EP1322837A2 Improved well testing system
07/02/2003EP1261448A4 Method of assembling pipe joints
07/02/2003EP1169547B1 Method of creating a wellbore in an underground formation
07/02/2003CN2558756Y Friction welded steel pumping rod
07/02/2003CN1427917A Threaded spacer
07/01/2003US6585052 Casing centralizer
07/01/2003US6585047 System for heat exchange with earth loops
07/01/2003US6585043 Friction reducing tool
07/01/2003US6585040 Downhole drilling apparatus
06/2003
06/26/2003WO2003051710A1 A deep-water vertical offshore riser
06/26/2003US20030116359 Rock drill head
06/26/2003US20030116358 Drill bit stabilizer device
06/26/2003US20030116325 Liner hanger with standoffs
06/26/2003US20030116315 In situ thermal processing of a relatively permeable formation
06/26/2003US20030116314 Well stimulation tool and method of using same
06/25/2003EP1232322B1 Tube connection
06/25/2003CN2557685Y Double-sleeve type eccentrically worm proof coupling
06/25/2003CN2557684Y Rotary sleeve type eccentrically worm proof coupling
06/25/2003CN2557683Y Direct joint type steel pipe screen joint
06/25/2003CN2557682Y Steel continuous oil sucking rod
06/24/2003US6582145 Pressurized connector for high pressure applications
06/24/2003US6581980 Threaded connection with high compressive rating
06/24/2003US6581690 Window cutting tool for well casing
06/24/2003US6581454 Apparatus for measurement
06/19/2003WO2003050387A2 Friction reducing composition and method
06/19/2003WO2003050386A1 Expandable locking thread joint
06/19/2003WO2003050381A1 Modular thread connection with high fatigue resistance
06/19/2003WO2003050380A1 Multiple seal design for composite risers and tubing for offshore applications
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