| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 06/27/2013 | WO2013095837A1 Subterranean tool with shock absorbing shear release |
| 06/27/2013 | WO2013093294A1 Fluid transfer apparatus between a wellhead in the bed of a body of water and a surface structure |
| 06/27/2013 | WO2013093233A1 Tubular component for boring and exploiting hydrocarbons wells and resultant threaded joint |
| 06/27/2013 | WO2013092911A2 Casing and adapter for producing a mechanical connection between a top drive and a casing |
| 06/27/2013 | WO2013092799A1 Setting tool |
| 06/27/2013 | WO2013091034A1 Method for testing non-uniform loads in pipes |
| 06/27/2013 | WO2013090971A1 A downhole centraliser |
| 06/27/2013 | WO2013048973A3 Electrical power wet-mate assembly |
| 06/27/2013 | WO2013035038A3 Drilling arrangement and clamping arrangement therefor |
| 06/27/2013 | WO2013032604A3 Resettable lock for a subterranean tool |
| 06/27/2013 | WO2012010981A3 Joints having improved sealability, lubrication and corrosion resistance |
| 06/27/2013 | US20130161027 Unequal Load Collet and Method of Use |
| 06/27/2013 | US20130161021 Compression coupling for pipes subjected to tension loads and associated methods |
| 06/27/2013 | US20130160993 Wedge ring for attaching centralizers |
| 06/27/2013 | DE102011056808A1 Futterrohr und adapter zum herstellen einer mechanischen verbindung zwischen einem topdrive und einem futterrohr Feed tube and adapter for the manufacture of a mechanical link between a top drive and a feed pipe |
| 06/27/2013 | CA2858470A1 Setting tool |
| 06/27/2013 | CA2855931A1 Tubular component for boring and exploiting hydrocarbons wells and resultant threaded joint |
| 06/26/2013 | EP2607606A1 Setting tool |
| 06/26/2013 | CN203022712U Combined geothermal well with perforation structure |
| 06/26/2013 | CN203022654U Sealing type universal shaft for screw drilling tool |
| 06/26/2013 | CN203022653U Non-magnetic spiral drilling collar |
| 06/26/2013 | CN203022652U Spiral wear-resisting drill collar |
| 06/26/2013 | CN203022651U Four-blade centralizer of wireless inclinometer along with drilling |
| 06/26/2013 | CN203022650U High antitorque sleeve screwed nipple |
| 06/26/2013 | CN203022649U Petroleum drill rod connector |
| 06/26/2013 | CN203022648U Watering connection device of hollow sucker rod |
| 06/26/2013 | CN203022647U Casing grouting circulating joint |
| 06/26/2013 | CN203022646U Tie-back plug |
| 06/26/2013 | CN203022645U Bi-directional protection sucker rod coupling |
| 06/26/2013 | CN203022644U Reversed buckle-type movable joint |
| 06/26/2013 | CN203022643U Loss oil layer double-tube continuous sand removal tubular column |
| 06/26/2013 | CN203022642U Raise drill rod with high torque and high wear resistance |
| 06/26/2013 | CN203022641U Non-magnetic pressure-bearing drilling stem |
| 06/26/2013 | CN103180539A Downhole inductive coupler assemblies |
| 06/26/2013 | CN103180538A Polymer film for the conditioning of oil extraction pipes |
| 06/26/2013 | CN103174387A Construction method of soil squeezing and dumping drill rod, twist drill, pile machine, and soil squeezing and dumping pile |
| 06/26/2013 | CN103174386A Flow restrictor and drilling assembly |
| 06/26/2013 | CN103174133A Pile-forming device and method of steel tube dado super embedded rock filling piles |
| 06/26/2013 | CN103172305A High-strength high-permeability selective sand-prevention casing |
| 06/26/2013 | CN102322226B Self-locking and unlocking device for sampling pipe joints of hollow stems for soft formations |
| 06/26/2013 | CN101713284B Over-long threaded heat pipe of sucker rod |
| 06/26/2013 | CN101021147B Sucker rod connection with improved fatigue resistance |
| 06/25/2013 | US8469084 Wireless transfer of power and data between a mother wellbore and a lateral wellbore |
| 06/20/2013 | WO2013090760A1 Liner drilling using temporarily sealed liner |
| 06/20/2013 | WO2013089691A1 Mitigation of hydrates, paraffins and waxes in well tools |
| 06/20/2013 | WO2013086566A1 A connector |
| 06/20/2013 | WO2013016641A3 Methods of coating wellbore tools and components having such coatings |
| 06/20/2013 | WO2012076850A8 Integral centralizer |
| 06/20/2013 | WO2012065970A3 Method for continuous formation core sampling |
| 06/20/2013 | US20130157767 Floating sub tool |
| 06/20/2013 | US20130153297 Adjustable Bent Drilling Tool Having in situ Drilling Direction Change Capability |
| 06/20/2013 | US20130153242 In-riser power generation |
| 06/20/2013 | US20130153208 Downhole Tool Retainer And Guide Ring And Methods Of Fabricating The Same |
| 06/20/2013 | CA2858242A1 Liner drilling using temporarily sealed liner |
| 06/19/2013 | EP2604785A1 Downhole device actuator and method |
| 06/19/2013 | CN203008884U Downhole oil-water separation column for oil gas field development |
| 06/19/2013 | CN203008859U Paraffin prevention device for oil well |
| 06/19/2013 | CN203008810U Integral type triple-head big lead wide air foil spiral drill rod |
| 06/19/2013 | CN203008809U Anti-wear bush of high-elasticity pipe rod for oil well |
| 06/19/2013 | CN203008808U Casing centralizer with variable diameter and rotational flow function |
| 06/19/2013 | CN203008807U Hydraulic opening-and-closing type pile casing of long auger drilling machine |
| 06/19/2013 | CN203008806U Plane load-bearing manual rotating oil extraction well mouth |
| 06/19/2013 | CN203008805U Antiwear anticorrosion device of hollow sucker rod |
| 06/19/2013 | CN203008804U High torsion resistance high-efficiency drill rod joint |
| 06/19/2013 | CN203008803U Crosswise-inserted left-screw torsional hollow sucker rod |
| 06/19/2013 | CN203008802U Anti-leakage drill rod joint |
| 06/19/2013 | CN203008801U Whole type oil pipe joint with air-tight seal structure |
| 06/19/2013 | CN203008800U High pressure union |
| 06/19/2013 | CN203008799U High-pressure-resistant gooseneck assembly |
| 06/19/2013 | CN203008798U Fiber reinforced composite material anti-eccentric continuous sucker rod |
| 06/19/2013 | CN203008797U Double-coupling, double-elastic gasket plug-in type anti-fall off solid sucker rod |
| 06/19/2013 | CN203008796U Corrosion-resistant abrasion-resistant oil pipe provided with non-metallic composite coating |
| 06/19/2013 | CN203008795U Carbon nano polymer coating flow string |
| 06/19/2013 | CN203008794U Flow string with polytetrafluoroethylene strong oxidation resistant coating |
| 06/19/2013 | CN103161432A Lifting type layered oil production tubular column |
| 06/19/2013 | CN103161431A Small hole well completion lifting technology tubular column and use method thereof |
| 06/19/2013 | CN103161428A Method for improving oil temperature at outlet of oil well |
| 06/19/2013 | CN103161415A Negative pressure drilling system |
| 06/19/2013 | CN103161410A Stabilizer of oil drilling tool |
| 06/19/2013 | CN103161409A Hydraulic type coupling alerter |
| 06/19/2013 | CN103161408A Hydraulic type coupling alarm device |
| 06/19/2013 | CN103159431A High-strength sand prevention casing pipe with high perpetration rate |
| 06/19/2013 | CN102409240B Hydrogen sulfide corrosion-resistant steel for petroleum drill rod and manufacturing method for hydrogen sulfide corrosion-resistant steel |
| 06/19/2013 | CN102296613B Grouting joint device and grouting machine |
| 06/19/2013 | CN102226377B Drill string equipped with downhole blowout preventer and working method thereof |
| 06/19/2013 | CN102071921B Underground drilling and fracturing-integrated staged fracturing device and gas drainage process |
| 06/19/2013 | CN101994496B Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| 06/19/2013 | CN101932789B Wellbore pipe centralizer having increased restoring force and self-sealing capability |
| 06/19/2013 | CN101711303B Threaded element of a component with opposed threading portions and corresponding tubular threaded connection |
| 06/19/2013 | CN101638982B Multi-formation fracturing device and process of release tubular column |
| 06/19/2013 | CN101363309B 被动扶正器 Passive centralizer |
| 06/18/2013 | US8464788 Hydraulic disconnect |
| 06/18/2013 | CA2523278C Device for rock bolting and for automatized rock bolting and rock bolting method |
| 06/13/2013 | WO2013084099A1 Threaded connection with improved root thread profile |
| 06/13/2013 | WO2013055590A4 Steering head with integrated drilling dynamics control |
| 06/13/2013 | WO2013019754A3 Method and portable apparatus for forcing a pipeline into or out of a borehole |
| 06/13/2013 | WO2012162666A3 Tubular coupling device |
| 06/13/2013 | WO2012062264A3 Device for capturing and conducting away liquids and/or gases escaping from a bed of a body of water |
| 06/13/2013 | CA2857432A1 Threaded connection with improved root thread profile |
| 06/12/2013 | EP2602423A2 Threaded connection with improved root thread profile |