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)
09/2010
09/23/2010WO2010107322A1 Riser clamp
09/23/2010WO2010106312A2 Improved downhole device
09/23/2010WO2010105953A2 Method of connecting a flexible riser to an upper riser assembly
09/23/2010US20100236832 Percussive drill bit provided with an improved chuck assembly
09/23/2010US20100236829 Stabilizer for drill strings
09/23/2010CA2756010A1 Downhole drilling assembly
09/23/2010CA2755873A1 Improved downhole device
09/23/2010CA2754805A1 Riser clamp
09/22/2010EP2230376A2 Power systems for wireline well service using wires pipe string
09/22/2010CN201588935U Sealing device for expansion joint of offshore drilling riser
09/22/2010CN201588567U Drill collar for oil side-drill well
09/22/2010CN201588566U Automatic centralizer for polished rod of oil pumping unit
09/22/2010CN201588565U 螺杆泵井抽油杆扶正器 Well screw rod centralizer
09/22/2010CN201588564U Stabilizer for screw drill tool
09/22/2010CN201588563U Multi-cylinder driven underwater connector with adjustable interface
09/22/2010CN201588562U Automatic positioning device for metal sealing cushion ring
09/22/2010CN201588561U Well drilling rod with spiral guide sleeve
09/22/2010CN201588537U 套式电锤钻 Nested Hammer Drill
09/22/2010CN201588534U Sealing transmission shaft for screw drilling tool
09/22/2010CN101839132A Electromagnetic induction MWD (Measurement While Drilling) data transmission system
09/22/2010CN101839115A Centralizer depending on well crude oil lubrication
09/22/2010CN101839114A Energy-saving anticorrosive abrasion-proof sucker rod
09/22/2010CN101839113A Underground deviation-correcting energy extraction device
09/21/2010US7798253 Method and apparatus for controlling precession in a drilling assembly
09/21/2010US7798252 Method and apparatus for providing a continuous stroke auger boring machine
09/21/2010US7798238 Apparatus and methods to protect connections
09/21/2010US7798213 Radial spring latch apparatus and methods for making and using same
09/21/2010US7798212 System and method for forming downhole connections
09/21/2010CA2464050C Flow control mechanism for a downhole tool
09/16/2010WO2010105258A1 Breakaway casing connection
09/16/2010WO2010104716A1 A flasked pressure housing
09/16/2010WO2010104667A1 Re-settable and anti-rotational contraction joint with control lines
09/16/2010WO2010104559A1 Bottom roller drive for deep soil mixing system
09/16/2010WO2010102572A1 Cable head for petroleum logging
09/16/2010WO2010085302A3 Vortex-induced vibration (viv) suppression of riser arrays
09/16/2010WO2009118467A8 Method of installing an underwater riser
09/16/2010US20100230171 Drill Head for a Tunneling Apparatus
09/16/2010US20100230167 Tension/collar/reamer assemblies and methods
09/16/2010US20100230104 Method for completing a borehole
09/16/2010US20100230090 Low Cost Rigless Intervention and Production System
09/15/2010EP2227618A1 Well tubings with polymer liners
09/15/2010EP1646472B1 Device with a pipe/connector weld joint configuration
09/15/2010CN201582135U Centralizing pumping screw turbine pump for underground annuluses
09/15/2010CN201581881U Injection-production integral tubular column of thickened oil pressure-exempting well
09/15/2010CN201581865U Adjustable quick connecting tool for well cleanout
09/15/2010CN201581824U Double drive spiral anchor rod drilling rig
09/15/2010CN201581823U Drilling tool of thermal spraying ceramic screw
09/15/2010CN201581822U Large displacement well casing guide shoe
09/15/2010CN201581821U Ring type pumping rod stabilizer
09/15/2010CN201581820U Anti-tripping device applied in screw drill
09/15/2010CN201581819U Rotary joint for well completion
09/15/2010CN201581818U Coupling for high anticorrosive and high anti-leakage oil pipe
09/15/2010CN201581817U Injection-exploring integral special hollow rod coupling
09/15/2010CN201581816U Gap coupling for lateral drilling
09/15/2010CN201581807U Tool specially used for drilling holes on underground sleeve of radial horizontal well with ultra-short radius
09/15/2010CN201581805U Drilling tool for sleeving anchor rope
09/15/2010CN201581803U Single eccentric following pipe drilling tool
09/15/2010CN101832382A Driving device
09/15/2010CN101832254A Deep-pumping matched process technology of oil well
09/15/2010CN101832112A Optimal experimental device for coupling centralizer
09/15/2010CN101832111A Bi-directionally sliding pup-joint coupling centralizer
09/15/2010CN101832110A Optimal experimental method for coupling centralizer
09/15/2010CN101832109A Casing protector for drilling
09/15/2010CN101832108A Vacuum oil tubing coupling
09/15/2010CN101832099A Special drilling machine applied to coal mine getting working face
09/15/2010CN101131069B Hole-digging and temperature-reducing drilling tool for outburst coal seam and drilling method thereof
09/14/2010US7794355 Planetary gear set centering ring
09/14/2010US7793723 Submerged loading system
09/14/2010US7793722 Non-ferromagnetic overburden casing
09/14/2010US7793718 Communicating electrical energy with an electrical device in a well
09/14/2010US7793717 Progressive cavity pump rod guide
09/14/2010CA2608043C Threaded joint for steel pipe
09/10/2010WO2010102001A1 System and method for connecting wired drill pipe
09/10/2010WO2010101549A1 Gasket for inductive coupling between wired drill pipe
09/09/2010US20100224416 System and method for connecting wired drill pipe
09/09/2010US20100224375 Re-settable and anti-rotational contraction joint with control lines
09/08/2010EP2225801A1 Purging of fiber optic conduits in subterranean wells
09/08/2010EP2225432A2 Riser pipe segment with flanged auxiliary ducts and bayonet connections
09/08/2010CN201574698U Self-lubricating rod tube wear-resistant device
09/08/2010CN201574697U Hermetically-sealing threaded connection structure for buttress-fastening oil sleeves
09/08/2010CN201574696U Large-caliber fast screwing-up sleeve thread connecting structure
09/08/2010CN201574695U Steam-filling pipeline connection coupling thermal insulation rainproof apparatus
09/08/2010CN201574694U Soldering hoop of oil pumping rod
09/08/2010CN201574693U Wedge form coupling joint anti-tripping sucker rod
09/08/2010CN201574692U Oil-pumping polished rod
09/08/2010CN101827997A Electrical contact connections for wellbore tools
09/08/2010CN101827996A Drill-string shock absorbers
09/08/2010CN101827995A System and method for controlling a drilling system for drilling a borehole in an earth formation
09/08/2010CN101827994A System and method for directionally drilling a borehole with a rotary drilling system
09/08/2010CN101824971A Pumping-assisting centering dropout prevention device of pumping rod
09/08/2010CN101824970A Elastic rigid centralizer
09/08/2010CN101824969A Double-shoulder double-sealing face screwed nipple and collar-free oil well pipe using same
09/08/2010CN101824960A Full-hydraulic screw drilling machine
09/08/2010CN101559551B Non-magnetic drill collar surface rolling processing method
09/02/2010WO2010099283A2 Threadless drillpipe connector
09/02/2010WO2010097528A1 Bottom-surface connecting installation of the multi-riser hybrid tower type, comprising sliding buoyancy modules
09/02/2010WO2010096861A1 Centralising core orientation apparatus
09/02/2010WO2009094066A3 Method and system for fracturing subsurface formations during the drilling thereof
09/02/2010US20100219980 Method and system for performing operations and for improving production in wells
09/02/2010US20100218956 Apparatus for and method of securing a centralizer to a tubular
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