| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 10/10/2013 | WO2012143723A3 Slip joint and method of operating a slip joint |
| 10/10/2013 | WO2012143672A3 Hybrid riser system |
| 10/10/2013 | WO2012143671A3 Subsea conduit system |
| 10/10/2013 | WO2011084213A3 Process of applying hard-facing alloys having improved crack resistance and tools manufactured therefrom |
| 10/10/2013 | US20130266381 Transfer System |
| 10/10/2013 | US20130264070 Misalignment-Tolerant Wellsite Connection Assembly, System, and Method |
| 10/10/2013 | US20130264067 Downhole Draw-Down Pump and Method |
| 10/10/2013 | US20130264065 Rotating and reciprocating swivel apparatus and method |
| 10/09/2013 | EP2646731A2 Turbulence free ring |
| 10/09/2013 | EP2646730A2 Composite pipe |
| 10/09/2013 | EP2646645A2 Tapered thread configuration with improved durability |
| 10/09/2013 | EP2646644A2 Bottom preventer for use in a drilling system |
| 10/09/2013 | EP2646643A1 Contamination resistant connecting system and method |
| 10/09/2013 | EP2646639A2 Vibration transmission and isolation |
| 10/09/2013 | EP2646625A1 Coupling, in particular for connecting anchor rods |
| 10/09/2013 | EP2646225A2 Composite pipe |
| 10/09/2013 | CN203230353U Wearing bush top thread |
| 10/09/2013 | CN203230352U Sleeve joint for gathering and transportation of petroleum |
| 10/09/2013 | CN203230351U Drilling tool thread structure for increasing thread root width |
| 10/09/2013 | CN203230350U Thread form structure of straight thread |
| 10/09/2013 | CN203230349U Drilling tool thread structure for increasing area of thread bearing surface |
| 10/09/2013 | CN203230348U Double-shoulder sealing surface structure |
| 10/09/2013 | CN203230347U Temperature control blow-off petroleum pipeline |
| 10/09/2013 | CN203230346U Automatic loading-unloading drill rod mechanism of non-excavation horizontal directional drilling machine |
| 10/09/2013 | CN203230345U Honeycomb-shaped drill stem and connecting device thereof |
| 10/09/2013 | CN203229944U Rock-socketed prestressed pipe pile grouted after being embedded in pile bottom through spinning and rocking drilling |
| 10/09/2013 | CN103348088A Drill rod guide |
| 10/09/2013 | CN103348087A Parameter sensing and monitoring |
| 10/09/2013 | CN103348085A Vibration transmission and isolation |
| 10/09/2013 | CN103343844A Duplex-metal composite gas drainage pipeline with coating and manufacturing method thereof |
| 10/09/2013 | CN103343669A Dual rod drill pipe with improved flow path method and apparatus |
| 10/09/2013 | CN103343668A Wired cable transmission drilling rod connector |
| 10/09/2013 | CN102226379B Sleeve for marine riser |
| 10/08/2013 | US8550189 Drive pin support |
| 10/08/2013 | US8550186 Rotary steerable tool employing a timed connection |
| 10/08/2013 | US8550175 Well completion with hydraulic and electrical wet connect system |
| 10/08/2013 | US8550173 Locking safety joint for use in a subterranean well |
| 10/08/2013 | US8550172 Plural barrier valve system with wet connect |
| 10/08/2013 | US8550169 Connector |
| 10/08/2013 | CA2707275C Drilling cuttings mobilizer |
| 10/08/2013 | CA2530837C Helical rod guide and method |
| 10/08/2013 | CA2491807C Sealed branch wellbore transition joint |
| 10/03/2013 | WO2013149099A1 Friction reduction mechanism for a downhole release assembly |
| 10/03/2013 | WO2013148110A2 Expansion tool for non-cemented casing-casing annulus (cca) wellbores |
| 10/03/2013 | WO2013106011A3 Downhole oscillator |
| 10/03/2013 | WO2013030050A3 Method and system for drilling with reduced surface pressure |
| 10/03/2013 | WO2013004478A3 Inductive connection |
| 10/03/2013 | US20130256033 Multiple distributed pressure measurements |
| 10/03/2013 | US20130255967 Expansion Tool for Non-Cemented Casing-Casing Annulus (CCA) Wellbores |
| 10/03/2013 | US20130255966 Removable modular antenna assembly for downhole applications |
| 10/03/2013 | US20130255956 Seal Sub System |
| 10/03/2013 | US20130255935 Expansion Tool for Non-Cemented Casing-Casing Annulus (CCA) Wellbores |
| 10/02/2013 | EP2643541A1 Submersible progressive cavity pump driver |
| 10/02/2013 | CN203223245U Anti-collapsing apparatus for drainage drill hole with large aperture and long distance |
| 10/02/2013 | CN203223187U Riser shoe with elliptic conical teeth |
| 10/02/2013 | CN203223186U Latch-type underground pipeline protector |
| 10/02/2013 | CN203223185U Anti-squeezing and anti-biting protection drill rod |
| 10/02/2013 | CN203223184U Coupler structure for thread of casing pipe with external diameter of 508 to 622.3 mm |
| 10/02/2013 | CN203223183U Assembled pipe type heavy weight drill rod |
| 10/02/2013 | CN103339431A Turbulence free ring |
| 10/02/2013 | CN103339343A Selective sleeve system and method of moving a sleeve |
| 10/02/2013 | CN103334705A Novel sucker rod centering device |
| 10/02/2013 | CN103334704A Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod |
| 10/02/2013 | CN103334703A Middle dual-flexibility device for offshore drilling riser |
| 10/02/2013 | CN103334699A Coal mine underground coal bed drilling and cave-building device and method of use |
| 10/02/2013 | CN102505093B Solid expansion tube steel for open hole completion of oil and gas well and manufacturing method thereof |
| 10/02/2013 | CN101535597B Drilling tool, self -drilling rock bolt, drill bit, ancoring device for self -drilling rock bolt, shaft for drilling tool and end coupling for drilling tool |
| 10/01/2013 | CA2719445C Device and method for improving liquid removal from gas, condensate & oil wells when using a multi-channel system |
| 09/26/2013 | WO2013142576A1 Well centralizer |
| 09/26/2013 | WO2013141993A1 Internal gripping system |
| 09/26/2013 | WO2013140179A2 Cladding |
| 09/26/2013 | WO2013140090A1 Installation comprising seabed-to-surface connections of the multi-riser hybrid tower type, including positive-buoyancy flexible pipes |
| 09/26/2013 | WO2013138857A1 Electrical conductor subassembly and method of use |
| 09/26/2013 | US20130248209 High pressure tie back receptacle and seal assembly |
| 09/26/2013 | US20130248208 Downhole Tool Roller Device With Cylindrical Bearing Mechanism |
| 09/26/2013 | US20130248207 Centraliser |
| 09/26/2013 | US20130248198 Safety System for Deep Water Drilling Units Using a Dual Blow Out Preventer System |
| 09/26/2013 | US20130248197 Multipart sliding joint for floating rig |
| 09/26/2013 | US20130248196 High-capacity single-trip lockdown bushing and a method to operate the same |
| 09/26/2013 | US20130247355 Internal gripping system |
| 09/26/2013 | DE102012204496A1 Drilling device for producing well bore, has conduit emerged from rear end of drilling element, which comprises primary cable end arranged in drilling element and secondary cable end arranged outside the drilling element |
| 09/25/2013 | EP2642063A1 A drill bit for percussive drilling |
| 09/25/2013 | EP2640930A1 Kobe sub, wellbore tubing string apparatus and method |
| 09/25/2013 | EP2640926A1 Remote operation of a rotating control device bearing clamp and safety latch |
| 09/25/2013 | EP2640925A1 Remote operation of a rotating control device bearing clamp |
| 09/25/2013 | EP2640924A1 A rod suitable for being inserted into a deviated wellbore and a method of manufacturing the same |
| 09/25/2013 | EP2640923A1 Tower for exploiting fluid in an expanse of water and associated installation method |
| 09/25/2013 | CN203214003U Float collar and pipe string using same |
| 09/25/2013 | CN203213979U Double-wall drilling rod for complex stratum |
| 09/25/2013 | CN203213978U Comprehensive protector for sucker rod |
| 09/25/2013 | CN203213977U Rotary internal flow centralizer for lifting full-metal screw pump |
| 09/25/2013 | CN203213976U Dual-seal airtight joint type threads used for oil pipe and casing pipe |
| 09/25/2013 | CN203213975U Petroleum casing pipe pup joint |
| 09/25/2013 | CN203213974U Rapid screwing threads for casing tubes |
| 09/25/2013 | CN203213973U Plug drill rod connecting sleeve |
| 09/25/2013 | CN203213972U Fast screwing thread strengthening structure for oil drill pipe joint |
| 09/25/2013 | CN203213971U Anti-eccentric-abrasion sucker rod connecting hoop |
| 09/25/2013 | CN203213970U High air-tight seal X-over connector |
| 09/25/2013 | CN203213969U Petroleum drill rod heavy weight joint |
| 09/25/2013 | CN203213968U Petroleum drill rod joint |