| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 12/18/2013 | CN103452499A Casing positioner for petroleum drilling |
| 12/18/2013 | CN103452498A Rotary steerable drilling universal joint |
| 12/18/2013 | CN103452497A Tubing head of drilling equipment for offshore oil field |
| 12/18/2013 | CN103452496A Injection-production integrated automatic switching production joint for thick oil thermal production well |
| 12/18/2013 | CN103452495A Method for determining ultimate operating torque of tool joint under complex working conditions |
| 12/18/2013 | CN103452494A Locking device for drilling tools |
| 12/18/2013 | CN103452493A Special resistance-welding composite sulfur-resistant drill rod and method for manufacturing same |
| 12/18/2013 | CN103452492A Forming method of drill pipe high station structure for rapid raising and dropping drill and drill pipe |
| 12/18/2013 | CN103452491A Production process of drilling tubing and casing for oilfields |
| 12/18/2013 | CN103452490A Novel expansion pipe column |
| 12/18/2013 | CN103452489A Wellhead four-way casing for oil production deep well |
| 12/18/2013 | CN103452472A Slurry pumping type well drilling device and well drilling method |
| 12/18/2013 | CN102361892B Fluororesin and riser pipe |
| 12/18/2013 | CN102041978B Rod hiding type oil pumping unit |
| 12/18/2013 | CN101956536B Rod carrying monitoring method and rod carrying prevention system for drill rod of rotary drilling machine |
| 12/17/2013 | US8607900 Downhole tool engaging a tubing string between a drill bit and tubular for reaming a wellbore |
| 12/17/2013 | US8607856 Cable head for petroleum logging |
| 12/12/2013 | WO2013184676A1 Wellbore influx detection in a marine riser |
| 12/12/2013 | WO2013184406A1 Chilled clathrate transportation system |
| 12/12/2013 | WO2013184138A1 Shunt tube assembly entry device |
| 12/12/2013 | WO2013182196A1 A riser and an offshore system |
| 12/12/2013 | WO2013181704A1 Flange catching, aligning and closing tool |
| 12/12/2013 | WO2013149268A3 Chained clamp pipeline repair structure and method of use |
| 12/12/2013 | WO2012170152A3 Subsea pressure relief devices and methods |
| 12/12/2013 | US20130327542 Jumper Tube Locking Assembly and Method |
| 12/12/2013 | US20130327533 Wellbore influx detection in a marine riser |
| 12/12/2013 | US20130327518 Improvements relating to core barrel outer tubes |
| 12/12/2013 | US20130327447 High-Strength Corrosion-Resistant Tubing for Oil and Gas Completion and Drilling Applications, and Process for Manufacturing Thereof |
| 12/12/2013 | CA2875851A1 Shunt tube assembly entry device |
| 12/12/2013 | CA2875623A1 A riser and an offshore system |
| 12/12/2013 | CA2875509A1 Downhole safety joint |
| 12/11/2013 | EP2672058A2 Method and device for sealing the ends of drilling rod elements |
| 12/11/2013 | EP2670951A2 Connection cartridge for downhole string |
| 12/11/2013 | CN203336070U Bi-metal composite gas drainage pipeline with coating |
| 12/11/2013 | CN203335122U Internally-arranged drill rod temperature-control automatic air closing inflaming-retarding device |
| 12/11/2013 | CN203334978U Spring type automatic reversing guiding shoe |
| 12/11/2013 | CN203334977U Groove type anti-rotating anchor for oil well |
| 12/11/2013 | CN203334976U Surface casing wellhead corrector |
| 12/11/2013 | CN203334975U Sucker rod centering device |
| 12/11/2013 | CN203334974U Special threaded buckling coupling |
| 12/11/2013 | CN203334973U Anti-suction device for horizontal well cutting bed removing, trip and piston pulling |
| 12/11/2013 | CN203334972U Multilateral well pumping-prevention connector |
| 12/11/2013 | CN203334971U Adapter substitute of logging instrument |
| 12/11/2013 | CN203334970U Triangular drill rod |
| 12/11/2013 | CN203334969U Sucker rod |
| 12/11/2013 | CN203334968U Oil well casing pipe |
| 12/11/2013 | CN103443392A Bore protector |
| 12/11/2013 | CN103437718A Pendulum bob type vortex-induced vibration suppression device and method capable of rotating after being impacted |
| 12/11/2013 | CN103437717A Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method |
| 12/11/2013 | CN103437716A Centering and sealing mechanism suitable for casing pipe driving head |
| 12/11/2013 | CN103437708A Casing pipe driving head suitable for casing pipe well drilling |
| 12/11/2013 | CN102305027B Anti-corrosion thermal-proof oil pipe with thermal barrier coating on surface for thermal recovery of thick oil |
| 12/10/2013 | US8602675 Assembly comprising first and second components |
| 12/10/2013 | US8602125 Switch arrangement for controlling operation of a motor of a power tool |
| 12/10/2013 | US8602113 Coated oil and gas well production devices |
| 12/10/2013 | US8602097 Well assembly with a composite fiber sleeve for an opening |
| 12/10/2013 | CA2749221C Thrust bearing assembly for a wireline-operated directional core barrel drill |
| 12/05/2013 | WO2013181303A1 Monitoring integrity of a riser pipe network |
| 12/05/2013 | WO2013180970A1 Drilling riser retrieval in high current |
| 12/05/2013 | WO2013014440A3 Landing string |
| 12/05/2013 | WO2013011293A3 Down-hole swivel sub |
| 12/05/2013 | WO2012131354A3 A riser |
| 12/05/2013 | US20130320665 Process for coating a threaded tubular component, threaded tubular component and resulting connection |
| 12/05/2013 | US20130319772 Hammer bit locking mechanism |
| 12/05/2013 | US20130319690 Pull Through Centralizer |
| 12/05/2013 | US20130319689 Pull Through Centralizer |
| 12/05/2013 | US20130319686 Centralizer connector |
| 12/05/2013 | US20130319684 Friction reducing stabilizer |
| 12/05/2013 | US20130319680 Drilling Riser Retrieval in High Current |
| 12/05/2013 | US20130319677 Well completion |
| 12/05/2013 | US20130319655 Downhole safety joint |
| 12/04/2013 | EP2668364A2 Drill string components resistant to jamming |
| 12/04/2013 | EP2668363A1 System and method for coupling pipes |
| 12/04/2013 | CN203321393U Medium-soft rock core extractor |
| 12/04/2013 | CN203321364U Lining oil tube end protective device |
| 12/04/2013 | CN203321363U Corrosion-resistant and abrasion-resistant oil pumping polished rod |
| 12/04/2013 | CN203321362U Hydraulic type casing centralizer |
| 12/04/2013 | CN203321361U Near-bit stabilizer |
| 12/04/2013 | CN203321360U Stabilizer bar structure and raise boring machine comprising stabilizer bar structure |
| 12/04/2013 | CN203321359U Anti-abrasion connector of sleeve |
| 12/04/2013 | CN203321358U Spring positioning pin for connection of plug-in drill pipe |
| 12/04/2013 | CN203321357U Inclined joint replacing conventional mud motor bent shell |
| 12/04/2013 | CN203321356U Breakage-resistant connecting-stripping device |
| 12/04/2013 | CN203321355U Lifting-jetting guiedvane for blocked oil pipe |
| 12/04/2013 | CN203321354U Connector for coiled tube |
| 12/04/2013 | CN203321353U Underwater oil outlet pipe connector |
| 12/04/2013 | CN203321352U Adjustable water cap for screw drill |
| 12/04/2013 | CN203321351U Novel rapid connecting sealing rod |
| 12/04/2013 | CN203321350U Snake bone drill pipe for drilling |
| 12/04/2013 | CN203321349U Arc-shaped sealing device for pressure tapping for pipelines or drill pipes |
| 12/04/2013 | CN203321348U Watertight drill pipe |
| 12/04/2013 | CN203321347U High-load drill rod and raise-boring machine comprising drill rod |
| 12/04/2013 | CN203321328U Reamer bit for construction long screw pile machine |
| 12/04/2013 | CN203321324U Underground coal mine seam drilling and cavitating device |
| 12/04/2013 | CN203321312U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool |
| 12/04/2013 | CN203321311U Gear down-the-hole mixing drilling tool and gear down-the-hole drilling machine comprising gear down-the-hole mixing drilling tool |
| 12/04/2013 | CN103422819A Airtight connection structure for oil well pipe |
| 12/04/2013 | CN103422818A Environment-friendly soiling solution recovery device |
| 12/04/2013 | CN103422810A Soil boring machine |
| 12/04/2013 | CN102619470B Method for controlling transverse vibration of drill string in process of reaming while drilling |