| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/07/2013 | US20130032411 Compositions, methods of coating wellbore tools with such compositions, and wellbore tools coated with such compositions |
| 02/07/2013 | CA2842956A1 Traversing a travel joint with a fluid line |
| 02/06/2013 | EP2554783A1 Sleeve for connecting tubular elements for installations at the bottom of wells |
| 02/06/2013 | EP2553207A1 Method and device for treatment of a pipestring section that is positioned in a set-back |
| 02/06/2013 | CN202718660U Separate exploitation and joint exploitation tubular column in screen-pipe completed horizontal well |
| 02/06/2013 | CN202718640U Spiral drill rod |
| 02/06/2013 | CN202718639U Guiding thrust threaded connection drill collar assembly |
| 02/06/2013 | CN202718638U Superlow-resistance ball sleeve centering device |
| 02/06/2013 | CN202718637U Casting type cable protector |
| 02/06/2013 | CN202718636U Casting type cable protector |
| 02/06/2013 | CN202718635U Composite cable protector |
| 02/06/2013 | CN202718634U Long-type sucker rod stabilizer |
| 02/06/2013 | CN202718633U Device capable of inhibiting vortex-induced vibration of marine riser and marine pipeline |
| 02/06/2013 | CN202718632U Reducing sleeve connector |
| 02/06/2013 | CN202718631U Highly resistance twist drill pipe joint |
| 02/06/2013 | CN202718630U Well cementation cement head fast connecting clamp hoop |
| 02/06/2013 | CN202718625U Auxiliary line bracket of offshore drilling marine riser |
| 02/06/2013 | CN102913253A Microtunnelling system and apparatus |
| 02/06/2013 | CN102913161A Straightening and anchoring device applied to horizontal open hole well |
| 02/06/2013 | CN102913148A Pump-aided and load-shedding device |
| 02/06/2013 | CN102913147A Centralizer |
| 02/06/2013 | CN102913146A Sucker rod pumping improvement centralizer |
| 02/06/2013 | CN102913145A Hydraulic mechanical drill stem damper |
| 02/06/2013 | CN102913144A External flat geological drill rod in form of double-top and double-cone connection |
| 02/06/2013 | CN102913143A Casing driving device |
| 02/06/2013 | CN102913142A Rotary abrasion-proof connector |
| 02/06/2013 | CN102913141A Torque-reducing and abrasion-resistant joint |
| 02/06/2013 | CN102913140A Portable energy-saving rotary drilling rod |
| 02/06/2013 | CN102913134A Drilling tool |
| 02/06/2013 | CN102913123A Wedge key bar for power head and power head |
| 02/05/2013 | US8365775 Concentric, insulated tubular conduits and method for assembly |
| 02/05/2013 | CA2670364C A connector |
| 02/05/2013 | CA2661342C Method for logging after drilling |
| 02/05/2013 | CA2490176C Fiber reinforced spoolable pipe |
| 02/02/2013 | CA2760149A1 Isolated shearing mechanism for downhole tools |
| 01/31/2013 | WO2013016641A2 Methods of coating wellbore tools and components having such coatings |
| 01/31/2013 | WO2013015966A2 Damping assembly for downhole tool deployment and method thereof |
| 01/31/2013 | WO2013015785A1 Friction reduction device for drill pipe |
| 01/31/2013 | WO2013014254A1 Electromagnetic coupler |
| 01/31/2013 | WO2012149241A3 Downhole release joint |
| 01/31/2013 | WO2011135021A3 Electronic combined load weak link |
| 01/31/2013 | WO2011128068A3 Communication system for transmitting information relating to drilling rods |
| 01/31/2013 | US20130025881 Performance centralizer for close tolerance applications |
| 01/31/2013 | DE102011109001A1 Drilling equipment for boring holes in foundation pile for e.g. building, has tool or intermediate piece extended through transverse bore, and another transverse bore arranged in middle part of walls in relation to cross section of rod |
| 01/31/2013 | CA2843269A1 Friction reduction device for drill pipe |
| 01/31/2013 | CA2842545A1 Landing string |
| 01/31/2013 | CA2841070A1 Damping assembly for downhole tool deployment and method thereof |
| 01/30/2013 | CN202707824U Anti-torsion and tensile bearing short section |
| 01/30/2013 | CN202706970U Expansion bellows device |
| 01/30/2013 | CN202706945U Spiral auxiliary slagging high pressure drill rod for hydrodynamic measures |
| 01/30/2013 | CN202706944U Full hole stabilizer with rotatable exterior body |
| 01/30/2013 | CN202706943U Oil extraction tubular column tail end protective short joint |
| 01/30/2013 | CN202706942U Screwed joint for shale gas development |
| 01/30/2013 | CN202706941U Anticorrosion high air sealing thread joint |
| 01/30/2013 | CN202706940U Coring tool for preventing inner barrel from tripping off |
| 01/30/2013 | CN202706939U Trenchless drill pipe |
| 01/30/2013 | CN202706938U Rotary drill pipe with high efficiency, high reliability, large power and high density |
| 01/30/2013 | CN202706937U Gas drainage drill pipe |
| 01/30/2013 | CN202706936U Eccentric wellhead connection tool |
| 01/30/2013 | CN202706935U Drill rod structure with reinforced end part |
| 01/30/2013 | CN202706929U Pressurization speeding-up system in pit |
| 01/30/2013 | CN202706916U Well-drilling device |
| 01/30/2013 | CN202706022U Recycled post-tensioned prestressing anchor cable pile |
| 01/30/2013 | CN102906366A Remote operation of a rotating control device bearing clamp and safety latch |
| 01/30/2013 | CN102906365A Pressure controlled well construction and operation systems and methods usable for hydrocarbon operations, storage and solution mining |
| 01/30/2013 | CN102900380A Heavy-caliber double-thread petroleum casing |
| 01/30/2013 | CN102900379A 钻杆接头 Drill pipe joints |
| 01/30/2013 | CN102900378A Connecting structure of steel joint and aluminium alloy drill pipe body |
| 01/30/2013 | CN102900377A Threaded connection type all-aluminum alloy drill stem |
| 01/30/2013 | CN102900376A Continuous oil pumping rod |
| 01/30/2013 | CN102900375A Rotary drilling rig and rotary drill rod thereof |
| 01/30/2013 | CN102900357A Rotary drilling rig and brine collecting method |
| 01/30/2013 | CN102899578A Iron-nickel-chromium alloy oil casing and manufacturing method thereof |
| 01/30/2013 | CN102899573A Steel and manufacturing method for high strength wear resistance casing |
| 01/30/2013 | CN102367556B Drilling steel |
| 01/30/2013 | CN102071884B Columnar coupling compound sucker rod centralizer |
| 01/30/2013 | CN101775964B Auto-rotation centralizer with dynamic pressure lubricating effect |
| 01/29/2013 | US8364406 Multiple distributed sensors along a drillstring |
| 01/29/2013 | US8360094 Apparatus to mechanically load a compression member |
| 01/29/2013 | CA2549773C Self-orienting guide shoe |
| 01/24/2013 | WO2013012992A2 Adjustable mudline tubing hanger suspension system |
| 01/24/2013 | WO2013012572A2 Frangible slip for downhole tools |
| 01/24/2013 | WO2013010244A1 Apparatus and methods for producing natural gas using a gas recycle phase to remove liquid from a well |
| 01/24/2013 | WO2012102966A3 Drill string components resistant to jamming |
| 01/24/2013 | WO2011104554A3 Clamping arrangement |
| 01/24/2013 | US20130022409 Riser tensioner having an emergency seal |
| 01/24/2013 | US20130022408 Riser tensioner having oil collecting means |
| 01/24/2013 | US20130022407 Riser tensioner |
| 01/24/2013 | US20130020087 Riser section connector with flanges and external locking ring |
| 01/24/2013 | US20130020084 Affixation and release assembly for a mill and method |
| 01/24/2013 | US20130020072 Threaded Pipe Connection with a Pressure Energized Flex-Seal |
| 01/24/2013 | CA2839730A1 Frangible slip for downhole tools |
| 01/23/2013 | EP2547937A1 Sub-sea apparatus and operating method |
| 01/23/2013 | CN202692606U Drying device for pipes of oil and gas field equipment |
| 01/23/2013 | CN202689990U Rolling polish-rod centering rod-pumped well wellhead packing box |
| 01/23/2013 | CN202689971U Concave screw type circular drill rod |
| 01/23/2013 | CN202689970U Drilling tool centralizer |
| 01/23/2013 | CN202689969U Sucker rod righting and antifriction device |
| 01/23/2013 | CN202689968U Autorotation paraffin cutting centralizer |
| 01/23/2013 | CN202689967U Stamping type rigidity sleeve correcting device |