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)
03/2003
03/26/2003CN1406309A Rock drill bit and method for its manufacturing
03/25/2003US6538198 Marine umbilical
03/25/2003US6536531 Apparatus and methods for orientation of a tubular string in a non-vertical wellbore
03/25/2003US6536525 Methods and apparatus for forming a lateral wellbore
03/20/2003WO2002087869A3 Improved composite tubing
03/20/2003US20030051920 Liquid seal for wet roof bit
03/20/2003US20030051885 Tubing expansion
03/20/2003US20030051881 Electro-hydraulically pressurized downhole valve actuator
03/20/2003US20030051880 Method and apparatus for drilling a plurality of offshore underwater wells
03/20/2003US20030051876 Method and apparatus for stimulation of multiple formation intervals
03/19/2003EP1292754A2 Centraliser
03/19/2003CN2540497Y Rotary paraffin cutting centralizer
03/19/2003CN2540496Y Nylon paraffin cutting centralizer for sucker rod
03/19/2003CN2540495Y Underground trigger casing sliding joint
03/19/2003CN2540494Y Middle low temp anti-corrosion anti-wax antiscale oil pipe
03/18/2003US6535458 Method and apparatus for suppressing drillstring vibrations
03/18/2003US6533049 Mining drill steels and methods of making the same
03/18/2003US6533040 Multi-function apparatus for adding a branch well sealed liner and connector to an existing cased well at low cost
03/18/2003US6533034 Centralized stop collar for floating centralizer
03/18/2003US6532839 Apparatus for the remote measurement of physical parameters
03/13/2003WO2003021073A2 Method and apparatus for replacement of underground pipe
03/13/2003US20030048697 Power generation using batteries with reconfigurable discharge
03/13/2003US20030047588 Method of joining metal oilfield tubulars and well provided therewith
03/13/2003US20030047317 Deep-set subsurface safety valve assembly
03/13/2003US20030047308 Wireless downwhole measurement and control for optimizing gas lift well and field performance
03/13/2003CA2458923A1 Method and apparatus for replacement of underground pipe
03/12/2003EP1291486A1 Rotary coiled tubing
03/12/2003EP1290369A1 Composite pipe assembly and method for its preparation
03/12/2003EP1290108A1 Method for making a quasi-incompressible phase-change material with low thermal conductivity, and resulting product
03/12/2003CN2539834Y Fast joint for water string
03/12/2003CN2539833Y Disconnecting-connecting apparatus
03/12/2003CN2539832Y Drilling rod for well-drilling
03/11/2003US6530607 Two-step threaded connector having differential thread width
03/11/2003US6530440 Percussive drilling apparatus
03/11/2003US6530439 Flexible hose with thrusters for horizontal well drilling
03/11/2003US6530429 Downhole cleaning tool with shear clutch
03/06/2003WO2003019756A1 Unipolar transverse magnetic flux machine
03/06/2003US20030044238 Method and apparatus for replacement of underground pipe
03/05/2003EP1289032A1 Power tool, battery pack and attachment/ejection mechanism therefor
03/05/2003EP0815340B1 Rock drilling tool, drill bit and a method of transferring percussive energy
03/05/2003CN2538945Y Sucker rod centralising wear-proofing device
03/05/2003CN2538944Y Bearing type sucker rod centralising device
03/05/2003CN2538943Y Anti-seizing square bushing
03/05/2003CN2538942Y Eccentrically worn prevention sucker rod jointing hoop
03/05/2003CN1401045A Recirculatable ball drop release device for lateral oilwell drilling applications
03/05/2003CN1401013A Elongated element and steel for percussive rock drilling
03/04/2003US6527064 Assembly for drill pipes
03/04/2003US6527056 Variable OD coiled tubing strings
03/04/2003US6527053 Arrangement related to riser pipelines
03/04/2003US6526818 Seabed analysis
02/2003
02/27/2003WO2003016672A1 Magnetically controlled rod assembly
02/27/2003WO2003016671A2 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/27/2003US20030039880 Power tool with battery pack ejector
02/27/2003US20030037964 Rotary drill bits exhibiting cutting element placement for optimizing bit torque and cutter life
02/27/2003US20030037940 Excavation apparatus
02/27/2003US20030037920 Pad plunger assembly with concave pad subassembly
02/27/2003CA2454865A1 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/26/2003EP0880450B1 System for loading ships at sea
02/26/2003EP0796406B1 Internal coiled tubing connector
02/26/2003EP0712499B1 Improved slick line system with real-time surface display
02/25/2003US6524152 Bottom to surface link system comprising a submarine pipe assembled to at least one float
02/25/2003US6523624 Sectional drive system
02/25/2003US6523615 Electropolishing method for oil field tubular goods and drill pipe
02/23/2003CA2399428A1 System for remote delivery of a flowable substance
02/20/2003WO2002081857A3 Downhole weight bearing apparatus and method
02/20/2003US20030034177 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
02/20/2003US20030034156 Multi-function apparatus for adding a branch well sealed liner and connector to an existing cased well at low cost
02/20/2003US20030034079 Pulsation dampener apparatus and method
02/19/2003CN2536772Y Bayonet sucker rod stabilizer
02/19/2003CN2536771Y Sucker rod stabilizer
02/19/2003CN2536770Y Offset thickened tubing hanger
02/19/2003CN2536769Y Unitary sucking pump clutching device
02/19/2003CN2536768Y Anti-wax and anti-off-wear magnetic flow-aid pup joint of sucker rod
02/19/2003CN2536767Y Zinc-aluminum alloyed polishing rod
02/19/2003CN2536766Y Zinc and aluminum alloyed oil pipe
02/19/2003CN2536765Y Corrosionproof oil well casings with anodic rings
02/19/2003CN2536764Y Sucker rod damper
02/19/2003CN1398319A Combined logging and drilling system
02/19/2003CN1397716A Limiting stop ring for rod body
02/18/2003US6520732 Concentric, insulated tubular conduits and method of assembly
02/18/2003US6520264 Arrangement and method for deploying downhole tools
02/18/2003US6520255 Method and apparatus for stimulation of multiple formation intervals
02/18/2003CA2250769C Downhole electrode for well guidance system
02/13/2003WO2003012255A1 Completion apparatus and methods for use in wellbores
02/13/2003WO2003012250A1 Downhole vibrating device
02/13/2003WO2003012247A1 Tool string member with bearings
02/13/2003WO2003012246A1 Centraliser for an expandable tubular element in a wellbore
02/13/2003WO2003012245A1 Downhole release joint
02/13/2003WO2002044508A3 Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium
02/13/2003US20030032339 Method of producing electrical connectors for use in downhole tools and electrical connector produced thereby
02/13/2003US20030029979 Method of making a receiving block having a highly frictional receptacle
02/13/2003US20030029978 Method of securing an elongated member to a support member
02/13/2003US20030029641 Method and system for drilling a wellbore having cable based telemetry
02/13/2003US20030029621 Locking telescoping joint for use in a conduit connected to a wellhead
02/13/2003US20030029613 Apparatus and method for alternate path system
02/13/2003CA2453149A1 Centraliser for an expandable tubular element in a wellbore
02/12/2003EP1282757A1 Subsea riser disconnect and method
02/12/2003EP1210497A4 Bit connector
02/12/2003EP1070194B1 A mill and a method for milling
02/12/2003CN2535547Y Roller-type righting device of beaming rod
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