| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 12/03/2013 | US8596913 Free standing steel catenary risers |
| 12/03/2013 | CA2747368C Permanent downhole deployment of optical sensors |
| 12/03/2013 | CA2666045C Profiled encapsulation for use with instrumented expandable tubular completions |
| 12/03/2013 | CA2633728C External protection for expanding tubular threaded joints |
| 12/01/2013 | CA2817304A1 A downhole tool coupling and method of its use |
| 11/28/2013 | WO2013177585A1 Thermal release mechanism for downhole tools |
| 11/28/2013 | WO2013176645A1 Erosion reduction in subterranean wells |
| 11/28/2013 | WO2013122547A3 Riser protection structure |
| 11/28/2013 | WO2012101433A3 Drilling device for percussion or rotary percussion drilling having a coupling sleeve |
| 11/28/2013 | US20130315673 Curvature Limiter For A Flexible Undersea Line, And Seabed-To-Surface Linking Equipment Including Same |
| 11/28/2013 | US20130313025 Integral wear pad and method |
| 11/28/2013 | US20130312983 Double swivel apparatus and method |
| 11/28/2013 | US20130312978 Self-Adjusting Riser Centralizer |
| 11/27/2013 | CN203308451U Centering device rubber wing |
| 11/27/2013 | CN203308402U Drilling and sampling drill rod |
| 11/27/2013 | CN203308401U Tube protection device for borehole wall |
| 11/27/2013 | CN203308400U Reinforced drill rod internal thread protective sleeve |
| 11/27/2013 | CN203308399U Stable drill rod protective sleeve |
| 11/27/2013 | CN203308398U Centralizer for straight pipeline |
| 11/27/2013 | CN203308397U Oil sleeve variable tooth width gas-tight threads |
| 11/27/2013 | CN203308396U High-strength oil casing joint with metal interference seal |
| 11/27/2013 | CN203308395U High-strength oil casing reducing screwed joint structure |
| 11/27/2013 | CN203308394U Single-point inclinometer variable-diameter axial vibration reducing device |
| 11/27/2013 | CN203308393U Reducing and drag-reducing joint with long bevel |
| 11/27/2013 | CN203308392U High-pressure gas injection tubular column sealing plug |
| 11/27/2013 | CN203308391U Transition joint with capacity for automatic positioning |
| 11/27/2013 | CN203308390U Iso-dryness distribution tee joint |
| 11/27/2013 | CN203308389U Double-wall drill rod with detachable inner pipe |
| 11/27/2013 | CN203308388U Novel device for preventing oil tube from disengaging from lining oil tube |
| 11/27/2013 | CN203308387U Collapsing and biting preventing aluminum alloy drilling rod |
| 11/27/2013 | CN103415672A Method for continuous formation core sampling |
| 11/27/2013 | CN103410452A Threaded pile, spiral drilling machine for forming threaded pile and pile-forming construction method thereof |
| 11/27/2013 | CN103410451A Self-righting abrasion-proof hollow sucker rod |
| 11/27/2013 | CN103410450A Double-tubular drill rod |
| 11/27/2013 | CN102400650B Drilling tool |
| 11/27/2013 | CN102116133B Flange mechanism |
| 11/26/2013 | US8590641 Method and system for evaluating groups of threaded connections |
| 11/26/2013 | US8590627 Coated sleeved oil and gas well production devices |
| 11/26/2013 | CA2689858C Modular connector and method |
| 11/26/2013 | CA2513998C Armoured flat cable signalling and instrument power acquisition |
| 11/22/2013 | CA2807882A1 Abrasion resistance in well fluid wetted assemblies |
| 11/21/2013 | WO2013173796A1 Oil-well tubular anchoring system for lwd/mwd tools |
| 11/21/2013 | WO2013173785A1 Eccentric adjustment coupling for mud motors |
| 11/21/2013 | WO2012164515A3 Junction box to secure and electronically connect downhole tools |
| 11/21/2013 | US20130306316 Separable completion architecture |
| 11/20/2013 | EP2663727A2 Centraliser |
| 11/20/2013 | EP1933726B2 Flexible hollow shaft |
| 11/20/2013 | CN203296777U Simulation experiment device of tunnel boring machine |
| 11/20/2013 | CN203296739U Aligning device of oil tube hanger |
| 11/20/2013 | CN203296725U Through type DTH hammer reverse circulation drilling dust collecting device |
| 11/20/2013 | CN203296718U Diversion type vortex-induced vibration suppressing device |
| 11/20/2013 | CN203296717U Superconducting centralizer |
| 11/20/2013 | CN203296716U Hydraulic casing centralizer |
| 11/20/2013 | CN203296715U Novel machine lock rod pressure-bearing block |
| 11/20/2013 | CN203296714U Oil pumping well eccentric wearing preventing device |
| 11/20/2013 | CN203296713U Oil casing of special air-tight seal mechanism |
| 11/20/2013 | CN203296712U Safety joint |
| 11/20/2013 | CN203296711U Drilling tool for coal mine exploration |
| 11/20/2013 | CN203296710U Oil casing |
| 11/20/2013 | CN203296709U Hydraulic-releasing telescopic pipe |
| 11/20/2013 | CN203296698U Rotary drilling tool and rotary drilling machine for exploration |
| 11/20/2013 | CN103403289A Coupler with bonding surface |
| 11/20/2013 | CN103397878A Acoustic logging-while-drilling device of variable-diameter sound insulation structure |
| 11/20/2013 | CN103397853A Special air sealing threaded connector structure for casing pipe |
| 11/20/2013 | CN103397852A Field joint for downhole tool and downhole tool |
| 11/20/2013 | CN103397851A Drill rod adopting pangolin scale biomimetic structure |
| 11/20/2013 | CN102080503B Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof |
| 11/19/2013 | US8584775 Shearable drill pipe method and apparatus |
| 11/19/2013 | US8584771 Machine tool having an electric drive motor |
| 11/19/2013 | US8584770 Spindle bearing arrangement for a power tool |
| 11/19/2013 | CA2714872C Downhole oilfield tubulars having liners with diffusion barrier layer |
| 11/19/2013 | CA2598154C System and method for forming a coiled tubing connection |
| 11/19/2013 | CA2493775C Marking of pipe joints |
| 11/14/2013 | WO2013169993A1 Tool with multi-size segmented ring seat |
| 11/14/2013 | WO2013169878A1 Adjustable cone expansion systems and methods |
| 11/14/2013 | WO2013167710A2 Riser assembly and method |
| 11/14/2013 | WO2013166603A1 Thermal insulating concrete composition |
| 11/14/2013 | WO2013116826A4 Wellsite communication system and method |
| 11/14/2013 | WO2012149080A3 Marine subsea riser systems and methods |
| 11/14/2013 | US20130300112 Turbulence free ring |
| 11/14/2013 | US20130299237 Method and system for data-transfer via a drill pipe |
| 11/14/2013 | US20130299194 Shaped charge tubing cutter |
| 11/14/2013 | US20130299180 Systems and Methods For Managing Pressures In Casing |
| 11/14/2013 | US20130299179 Riser configuration |
| 11/14/2013 | US20130299178 Systems and methods for riser coupling |
| 11/14/2013 | US20130299164 Systems and Methods For Advanced Well Access to Subterranean Formations |
| 11/13/2013 | EP2662524A1 Flexible pipe body with buoyancy element and method of producing same |
| 11/13/2013 | EP2661536A2 Low equivalent circulation density setting tool |
| 11/13/2013 | CN203285361U Rock debris bed duster |
| 11/13/2013 | CN203285360U Seismic exploration compound drilling drill rod |
| 11/13/2013 | CN203285359U Positive displacement drill arc-shaped pin roller ball hinge joint universal shaft |
| 11/13/2013 | CN203285358U Sucker rod abrasion-preventing protection device |
| 11/13/2013 | CN203285357U Antiseptic wear-resisting sucker rod |
| 11/13/2013 | CN203285356U Protecting device of drilling rod of drilling machine |
| 11/13/2013 | CN203285355U High flow sucker rod centralizer |
| 11/13/2013 | CN203285354U Petroleum casing pipe threaded connector |
| 11/13/2013 | CN203285353U Three-edge arc-shaped drill pipe |
| 11/13/2013 | CN203285352U Blowout prevention joint of sucker rod for oil well operation |
| 11/13/2013 | CN203285351U Non-rotating joint for connecting underground electrical modules |
| 11/13/2013 | CN203285350U Buffer for sucker rod of beam-pumping unit |