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)
11/2007
11/27/2007US7299885 Downhole drill string having a collapsible subassembly and method of loosening a stuck drillstring
11/27/2007US7299867 Hanger mounted in the bore of a tubular component
11/27/2007CA2414428C Liner hanger with standoffs
11/27/2007CA2260191C Method for expanding a steel tubing and well with such a tubing
11/22/2007WO2007134167A2 Computational analysis of the synergy among multiple interacting factors
11/22/2007WO2007134059A1 Downhole swivel apparatus and method
11/22/2007WO2007133559A2 Processing of compact functional differences
11/22/2007WO2007133151A1 A rock-drilling tool, a drill rod and coupling sleeve
11/22/2007WO2007133150A1 A top hammer rock-drilling tool, a drill rod and coupling sleeve
11/22/2007WO2007133145A1 A female part for top hammer-drilling and method for manufacturing a female part
11/22/2007WO2007132407A1 Steering systems for coiled tubing drilling
11/22/2007WO2002079659A3 Method for preventing critical annular pressure buildup
11/22/2007US20070269274 Rock Bolt
11/22/2007US20070269272 Method and apparatus for wind power foundation
11/22/2007US20070267207 Spindle lock devices for screwdrivers
11/22/2007US20070267197 Rapid Makeup Drilling Riser
11/22/2007US20070267190 Ground freezing installation accommodating thermal contraction of metal feed pipes
11/22/2007DE19748987B4 Bohrwerkzeug insbesondere für drehschlagendes Bohren von vorzugsweise Gestein Drilling tool especially for rotating percussion drilling of preferably rock
11/22/2007DE102006022613A1 Drilling drive unit for propelling drill pipe, comprises drill pipe, adjustable between release position, in which fuse element is at distance from drill pipe, where drill pipe is positively contacted form-fit by fuse element
11/22/2007CA2742865A1 Apparatus and methods to protect connections
11/22/2007CA2652279A1 A rock-drilling tool, a drill rod and a coupling sleeve
11/22/2007CA2652278A1 A top hammer rock-drilling tool, a drill rod and coupling sleeve
11/22/2007CA2652275A1 A female part and method for manufacturing female parts
11/22/2007CA2651591A1 Steering systems for coiled tubing drilling
11/21/2007EP1857632A1 Method and apparatus for correcting magnetic flux sensor signals
11/21/2007EP1856371A1 Centralization and running tool and method
11/21/2007CN200978665Y High temperature expansion heat insulation sealing joint
11/21/2007CN200978651Y Pressure relief coupler
11/21/2007CN200978636Y Diameter-variable rigid casing centralizer
11/21/2007CN200978635Y Driller heavy hammer drill rod catcher
11/21/2007CN200978634Y Combined type short pitch centralizing device
11/21/2007CN200978633Y Combined type pump rod joint centralizing device
11/21/2007CN200978632Y Short pitch teeth-type centralizing device
11/21/2007CN200978631Y Sucker rod short pitch spiral centralizing device dedicated for screw pump well
11/21/2007CN200978630Y Low-friction self-cleaning type centralizer
11/21/2007CN200978629Y Wear-resistant hoop
11/21/2007CN101074597A Elastic elliptic bolt
11/21/2007CN100350127C Butt-joint drilling rod capable of transmitting electric signal
11/20/2007US7296639 Wellstring assembly
11/15/2007WO2007109878B1 Apparatus for keeping a down hole drilling tool vertically aligned
11/15/2007US20070262582 Spring-biased pin connection system
11/15/2007US20070261889 Safety joint
11/15/2007US20070261885 Percussion bit drill drive collar with retention mechanism
11/15/2007US20070261859 Downhole Connector
11/15/2007US20070261856 Method and system for retrieving riser for storm evacuation
11/15/2007US20070261846 Completion apparatus and methods for use in wellbores
11/14/2007EP1759085B1 Device for controlling stiffeners of flexible pipes
11/14/2007EP1668220B1 Method and device for boring holes in soil or rock
11/14/2007EP1644608B1 Coupling for dual member pipe
11/14/2007EP1488071B1 Method and device for directional down-hole drilling
11/14/2007CN200975253Y Exploratory boring rubber-pipe
11/14/2007CN200975222Y Down-hole pipe column cushion safety processor
11/14/2007CN200975221Y Drill stem of spiral digging drilling machine
11/14/2007CN200975218Y Recoverable apparatus at bottom hole of casing tube well drilling
11/14/2007CN101070752A Anti-corrosion high-strength pumping-oil polish rod
11/14/2007CN101070751A Technology for preparing anti-corrosion super-high-strength pumping-oil polish rod
11/14/2007CN101070749A Perforating machine for drilling hole
11/13/2007US7293940 Guide tube for a flexible pipe for transporting hydrocarbons
11/13/2007CA2410794C Tubular threaded joint with reinforced stop
11/13/2007CA2401075C Wellbore circulation system
11/13/2007CA2375808C Method of deploying an electrically driven fluid transducer system in a well
11/08/2007WO2007125276A1 Riser assembly
11/08/2007US20070256866 Swivelling device for a downhole rod pump
11/07/2007EP1702133B1 Method for drilling and lining a wellbore
11/07/2007CN200972421Y Fixed load sensor for pumping well measuring diagram
11/07/2007CN200972388Y Displacement collection device for belt beam unit ergogram
11/07/2007CN200971769Y Pumping well oil drainage tubular pipe
11/07/2007CN200971759Y Forced rotation centralising device
11/07/2007CN200971758Y Sealer for wellhead polish rod of pumping well
11/07/2007CN200971757Y High seal buttless thread double-pipe connection structure
11/07/2007CN200971756Y Anti-scoring coupling for oil pipe
11/07/2007CN200971755Y Connected water pneumatic two-used rod
11/07/2007CN200971754Y Partial abrasion protection sucker rod
11/07/2007CN101069037A A pipe joint lubrication device
11/07/2007CN101068711A Dispositif de liaison superieure entre deux conduites sous marines de transport de fluide
11/07/2007CN101067365A Improved screw connection drill rod
11/07/2007CN100347398C Wellstring assembly
11/07/2007CN100347397C Steerable rotary drill bit assembly with pilot bit
11/06/2007US7291303 Method for bonding a transmission line to a downhole tool
11/06/2007US7290624 Method and device for drilling holes in soil or rock material
11/06/2007US7290623 Welded joints for rotary-vibratory drills having reduced stress
11/06/2007CA2441240C Tubing connection arrangement
11/06/2007CA2439464C Method and apparatus for reforming tubular connections
11/06/2007CA2329454C Improvements in subassembly electrical isolation connector for drill rod
11/01/2007WO2007122430A1 Autonomous shut-off valve system
11/01/2007WO2007121983A2 Drill pipes
11/01/2007WO2007091218A3 Self-anchoring device with force amplification
11/01/2007US20070253778 Power Umbilical Compromising Separate Load Carrying Elements Of Composite Material
11/01/2007US20070253665 Fiber optic wet connector acceleration protection and tolerance compliance
11/01/2007US20070251711 Toothed ring connecting structure of a power tool
11/01/2007CA2649525A1 Mechanical parts having increased wear resistance
10/2007
10/31/2007EP1849956A1 Pipe coupling for pipe elements
10/31/2007EP1740793B1 A telescopic conductor casing for a well installation and a method of driving same into the underground
10/31/2007EP1664477B1 Locking device for built pipe connections
10/31/2007EP1540131B1 "top drive swivel apparatus and method"
10/31/2007CN200968184Y Plug-in mounting type centering guide for sucker rod
10/31/2007CN200968183Y Detachable inner internal through pumping aid centralising device
10/31/2007CN200968182Y Double sealing anti-drop temperature conducting pumping rod
10/31/2007CN200968181Y Near inner flat exterior thickening transition band drill stem
10/31/2007CN101063502A Anticompress and anti-bending shouldered hook-shape teeth screwed connection structure
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