| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 02/19/2014 | CN203441393U Cardan shaft for petroleum drilling tool |
| 02/19/2014 | CN203441392U Anti-sticking connector |
| 02/19/2014 | CN203441391U Drilling bucket square head for multifunctional rotary drilling rig |
| 02/19/2014 | CN203441390U 旋挖钻机钻杆以及旋挖钻机 Rotary drilling rig drill and rotary drilling rig |
| 02/19/2014 | CN203441389U Elastic joint of drill pipe |
| 02/19/2014 | CN203441388U Tubing head of ocean oilfield exploitation equipment |
| 02/19/2014 | CN203441387U 抽油杆接箍 Sucker rod couplings |
| 02/19/2014 | CN203441386U Injection-production integrated production joint capable of performing automatic switch for thickened oil thermal production well |
| 02/19/2014 | CN203441385U Square drill stem purging connector |
| 02/19/2014 | CN203441384U Movable joint with anti-throwing device |
| 02/19/2014 | CN203441383U Landing string |
| 02/19/2014 | CN203441382U Anti-falling device for polish rod of rod-pumped well |
| 02/19/2014 | CN203441381U Sleeve pipe for drilling rod |
| 02/19/2014 | CN203441366U Double-pipe fast connection and dust collection device for air sleeve pipe drilling |
| 02/19/2014 | CN203441361U Rotary drill with high-strength drill rod |
| 02/19/2014 | CN203441356U Transmission shaft for screw drill |
| 02/19/2014 | CN203441354U Portable rock core sampling drill |
| 02/19/2014 | CN103597166A High pressure multibore junction assembly |
| 02/19/2014 | CN103590833A Spiral-unearthing pipe-jacking pipe curtain construction method and device |
| 02/19/2014 | CN103590814A Probe and full-absorption damping device |
| 02/19/2014 | CN103590813A Method, tubular column and device for testing dynamic reserves of two-layer commingled producing gas well |
| 02/19/2014 | CN103590757A Drainage rotary guide shoe |
| 02/19/2014 | CN103590756A Rotary guide shoe |
| 02/19/2014 | CN103590755A Key bushing, hub and rotary drilling rig |
| 02/19/2014 | CN103590754A Adapter coupling |
| 02/19/2014 | CN103590753A Drilling tool for detecting temperature in drill hole in real time |
| 02/19/2014 | CN102536133B Hydraulic casing pipe centering device |
| 02/19/2014 | CN102272504B Armour reinforcement |
| 02/18/2014 | US8653361 Umbilical |
| 02/18/2014 | CA2718929C Coupling apparatus |
| 02/18/2014 | CA2716077C Coiled tubing having a capillary window and method for making same |
| 02/13/2014 | WO2014026190A1 Composite coiled tubing connectors |
| 02/13/2014 | WO2014026038A1 Pipe joint apparatus and method |
| 02/13/2014 | WO2014023943A1 Connector assembly for composite pipe |
| 02/13/2014 | WO2014023515A1 Flexible pipe body and method of providing the same |
| 02/13/2014 | WO2014022934A1 Pipe coupling |
| 02/13/2014 | WO2013101572A3 Method of fracturing while drilling |
| 02/13/2014 | US20140044493 Subsea Conduit System |
| 02/13/2014 | US20140041946 Friction reduction device for drill pipe |
| 02/13/2014 | US20140041945 Electromagnetic coupler |
| 02/13/2014 | US20140041942 High-Speed Triple String Drilling System |
| 02/13/2014 | US20140041879 Composite Component Deployment Configurations |
| 02/13/2014 | US20140041878 Hybrid Riser System |
| 02/12/2014 | EP2696027A1 Drilling bucket and method for drilling a bore hole |
| 02/12/2014 | CN203430505U Tubing string coupling alarm |
| 02/12/2014 | CN203430439U Thread type pile and spiral drilling machine for forming thread type pile |
| 02/12/2014 | CN203430438U Underground-started casing centralizer |
| 02/12/2014 | CN203430437U Boring tool with shock absorption function |
| 02/12/2014 | CN203430436U Coiled tubing inner connector with retractable slip |
| 02/12/2014 | CN203430435U Rolling type sucker rod eccentric abrasion resistant coupling capable of rotation and revolution |
| 02/12/2014 | CN203430434U Split type three-edge drill rod |
| 02/12/2014 | CN203430433U External-upset pipe body of drilling rod |
| 02/12/2014 | CN103582739A Tubular connection and associated thread form |
| 02/12/2014 | CN103573226A Well completion sand prevention process and sand prevention strings thereof |
| 02/12/2014 | CN103573196A Project drill pipe fastening connection method and device |
| 02/12/2014 | CN103573195A Hydraulic bearing-type riser universal joint device |
| 02/12/2014 | CN103573194A Production string optimization device for oil well in case of electric submersible pump gas-locking |
| 02/12/2014 | CN103573193A Integrated drilling and splitting drill stem device |
| 02/12/2014 | CN103573192A Sucker rod |
| 02/12/2014 | CN103573191A 套管 Casing |
| 02/12/2014 | CN102330538B Bottom hole assembly for prebuckling dynamical pendulum of single stabilitzer |
| 02/12/2014 | CN102245955B Sealed tubular connection used in oil industry, and method for producing said connection |
| 02/11/2014 | CA2716586C Threaded joint with improved resilient seal ring |
| 02/11/2014 | CA2686627C Electrically sequenced tractor |
| 02/06/2014 | WO2014022765A1 Coupling and mud motor transmission |
| 02/06/2014 | WO2014022384A1 Dual barrier open water well completion systems |
| 02/06/2014 | US20140034311 Methods and apparatus for wellbore construction and completion |
| 02/06/2014 | US20140034295 Method for making centralizers for centralising a tight fitting casing in a borehole |
| 02/05/2014 | CN203420695U Tubular column for treating steam channeling at front end of SAGD injection-production horizontal well |
| 02/05/2014 | CN203420673U Frequency-conversion electric heating device for oil pipes |
| 02/05/2014 | CN203420653U Rod pumped well load shock absorber |
| 02/05/2014 | CN203420650U Guide shoe used for radial well drilling |
| 02/05/2014 | CN203420649U 抽油杆扶正器 Sucker rod centralizer |
| 02/05/2014 | CN203420648U Staggered supporting type centralizer of cased well logger |
| 02/05/2014 | CN203420647U Centralizer of loggers during drilling |
| 02/05/2014 | CN203420646U Air-tight seal special thread connector structure for sleeve pipe |
| 02/05/2014 | CN203420645U Drill pipe sand cut adapter substitute |
| 02/05/2014 | CN203420644U Drilling machine drill pipe fixing device |
| 02/05/2014 | CN203420634U Drilling tool capable of reducing combining exterior angle difference measurement error of directional drilling tool |
| 02/05/2014 | CN103562485A Thread device, thread joint and drill string component for percussive rock drilling |
| 02/05/2014 | CN103562484A Offshore top tensioned riser buoyancy can system and methods of field development |
| 02/05/2014 | CN103556957A Large changing diameter well drilling coal mining drill stem stabilizer |
| 02/05/2014 | CN103556956A Self-adaptive screw thread structure for high sealing performance oil pipe |
| 02/05/2014 | CN103556955A Sealing part structure for high sealing performance oil pipe |
| 02/05/2014 | CN103556954A Buffer for unfreezing polish rod of oil well |
| 02/05/2014 | CN103556941A Downhole drilling assembly |
| 02/05/2014 | CN103556940A Dual-channel porous turbulence pressure relief drilling tool for soft coal rock drilling, and construction method of drilling tool |
| 02/05/2014 | CN103556079A High-strength water riser main-pipe with excellent anti-fatigue performance and manufacturing method thereof |
| 02/05/2014 | CN102505921B Water searching pipe column of open-hole horizontal well |
| 02/05/2014 | CN101432499B Gas tight tubular joint or connection |
| 02/04/2014 | US8641328 Alignment window for drive tool assembly |
| 02/04/2014 | US8640795 Shock reduction tool for a downhole electronics package |
| 02/04/2014 | US8640792 Flexible directional drilling apparatus and related methods |
| 02/04/2014 | US8640770 End ring for use with swell packers |
| 02/04/2014 | US8640769 Multiple control line assembly for downhole equipment |
| 02/04/2014 | CA2661169C Releasing and recovering tool |
| 01/30/2014 | WO2014018519A1 System for conveying fluid from an offshore well |
| 01/30/2014 | WO2014018210A1 Pipe-in-pipe shunt tube assembly |
| 01/30/2014 | WO2014018051A1 Actuation assembly for downhole devices in a wellbore |
| 01/30/2014 | WO2014018040A1 Axis maintenance apparatus, systems, and methods |