| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/10/2013 | CN202866671U Bottom connector of direct transfer pumping unit and pumping device using same |
| 04/10/2013 | CN202866670U Wear-resisting weak abrasiveness bionic tool joint |
| 04/10/2013 | CN202866669U Wear-resistant drill pipe |
| 04/10/2013 | CN202866668U Pumping unit polish rod reinforced anti-falling cap |
| 04/10/2013 | CN202866667U Dowel type tool joint passing rotary plate redressing device |
| 04/10/2013 | CN103038437A Installation of tubular strings with lines secured thereto in subterranean wells |
| 04/10/2013 | CN103032033A Spiral rigid resin centering device |
| 04/10/2013 | CN103032032A Helical rigid roller resin centralizer for casings |
| 04/10/2013 | CN103032031A 14-3/4-inch extra-large-caliber prospecting drill rod thread structure |
| 04/10/2013 | CN102720466B Special alloy wax-proofing tool |
| 04/10/2013 | CN102245956B Pipe coupling arrangement |
| 04/10/2013 | CN101545374B Relay transmission measurement-while-drilling system |
| 04/10/2013 | CN101218414B Method and installation for connecting a rigid submarine pipeline and a flexible submarine pipeline |
| 04/09/2013 | US8413740 Fastener gun washer assembly holding device and method of use |
| 04/09/2013 | CA2672662C A radial spring latch apparatus and methods for making and using same |
| 04/09/2013 | CA2566221C System and methods using fiber optics in coiled tubing |
| 04/06/2013 | CA2791468A1 Enhanced oilfield swellable elastomers and methods for making and using same |
| 04/05/2013 | CA2791355A1 Multi-tube spoolable assembly |
| 04/04/2013 | WO2013048559A1 Propulsion generator and method |
| 04/04/2013 | WO2013006580A3 A system and method for coupling downhole tools |
| 04/04/2013 | WO2012174097A3 Magnetic particle induced plugging resistant magnetic coupling |
| 04/04/2013 | WO2012109355A3 Vortex-induced vibration suppression device and mating collar system |
| 04/04/2013 | WO2012051149A3 Marine subsea free-standing riser systems and methods |
| 04/04/2013 | US20130084131 Tapered thread configuration with improved durability |
| 04/04/2013 | US20130081877 Extendable pilot bit for barrel cutter |
| 04/04/2013 | US20130081802 Integral centraliser |
| 04/04/2013 | US20130081801 Methods for Improving Coatings on Downhole Tools |
| 04/04/2013 | CA2849928A1 Method and device for supplying at least one electrical consumer of a drill pipe with an operating voltage |
| 04/03/2013 | CN202850916U Centralizing type broken rod fishing machine |
| 04/03/2013 | CN202850908U Screw rod pump anchoring adjustable stretching device |
| 04/03/2013 | CN202850893U Double channel drill stem hydraulic power piston pressure adding tool |
| 04/03/2013 | CN202850889U Cutting drilling and percussion drilling dual-purpose rod stabilizing device |
| 04/03/2013 | CN202850888U Horizontal drill-in flexible drill rod stabilizer |
| 04/03/2013 | CN202850887U Second level extending rolling ball rotational flow sleeve pipe centering device |
| 04/03/2013 | CN202850886U Drive key sleeve for power head |
| 04/03/2013 | CN202850885U Horizontal drill-in flexible short section |
| 04/03/2013 | CN202850884U Multifunctional oil well opening connector |
| 04/03/2013 | CN202850883U Cable bypass piecing device in well |
| 04/03/2013 | CN202850882U Drill rod right and reverse rotating connection device for underground coal mine drilling machine |
| 04/03/2013 | CN202850881U Telescopic pup joint |
| 04/03/2013 | CN202850880U Rotary drilling rig drill rod with upper anti-throwing plate and lower anti-throwing plates |
| 04/03/2013 | CN202850879U Anti-erosion oil pumping rod with anti-erosion thermal-shrinkage material layers |
| 04/03/2013 | CN202850878U Drill pipe |
| 04/03/2013 | CN202850853U Main core tube device and rotary drilling machine comprising the same |
| 04/03/2013 | CN103025993A 钻管 Drill pipe |
| 04/03/2013 | CN103015921A Safety interlock for control lines |
| 04/03/2013 | CN103015916A Integral type directional drill rod provided with helical groove |
| 04/03/2013 | CN103015915A Hydraulic power sleeve centralizer |
| 04/03/2013 | CN103015914A Exploration drill rod thread structure with 11-1/4-inch ultra-large caliber |
| 04/03/2013 | CN103015913A Exploration drill rod thread structure with 12-3/4-inch ultra-large caliber |
| 04/03/2013 | CN103015912A Tieback plug |
| 04/03/2013 | CN103015911A Articulated oil tube tie-back sealing device |
| 04/03/2013 | CN103015910A Rotating sealed drilling and reaming conversion device |
| 04/03/2013 | CN103015909A 14-3/4 inch oversized caliber prospecting drill pipe |
| 04/03/2013 | CN103015908A Coiled tubing method for producing tubing member with auxiliary piping |
| 04/03/2013 | CN103015896A Underwater drilling arrangement and method for making a bore in a bed of a water body |
| 04/03/2013 | CN103015894A Friction and resistance reducing tool with axial crawling function |
| 04/03/2013 | CN103015885A Pile machine loading rod |
| 04/03/2013 | CN103015408A Cast-in-place pile synchronous casing hole-forming constructing method |
| 04/03/2013 | CN103014723A Corrosion controller of oil well production equipment and sucker rod employing controller |
| 04/03/2013 | CN102268602B 3Cr oil well pipe and production method thereof |
| 04/03/2013 | CN102174881B Method for drilling holes and protecting walls by plastic expansion casing pipe and special expansion casing pipe |
| 04/03/2013 | CN102168531B Coupling predication method of outburst risk multivariate information of gas coal and gas |
| 04/03/2013 | CN102155196B Dynamic laser perforation device capable of penetrating into rock under petroleum well |
| 04/03/2013 | CN102102496B Fish milling experiment clamping and centralizing device in oilfield operation |
| 04/03/2013 | CN101994052B Nitrogen-containing austenitic alloy |
| 04/03/2013 | CN101737027B High energy gas fracturing device of oil reservoirs of horizontal well |
| 04/02/2013 | US8408311 Termination assembly for a steel tube umbilical |
| 04/02/2013 | US8408304 Pump mechanism for cooling of rotary bearings in drilling tools and method of use thereof |
| 04/02/2013 | US8408287 Electrical jumper for a producing oil well |
| 04/02/2013 | US8408286 Perforating string with longitudinal shock de-coupler |
| 04/02/2013 | CA2755628C Helical drilling apparatus, systems, and methods |
| 04/02/2013 | CA2740063C Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
| 04/02/2013 | CA2694851C Methods and apparatus for actuating a downhole tool |
| 04/02/2013 | CA2687548C Composite spoolable tube |
| 03/28/2013 | WO2013043976A1 Adjustable fracturing head and manifold system |
| 03/28/2013 | WO2013043911A2 Three-way flow sub for continuous circulation |
| 03/28/2013 | WO2013043392A2 Composite limit collar |
| 03/28/2013 | WO2013040745A1 Method for monitoring shaft-bonding of drilling shaft of drilling rig, controller, system, and drilling rig |
| 03/28/2013 | WO2013019407A3 Traversing a travel joint with a fluid line |
| 03/28/2013 | WO2012170326A3 Controllably releasable shifting tool |
| 03/28/2013 | WO2012166324A3 High pressure multibore junction assembly |
| 03/28/2013 | US20130078039 Protection device, offshore support platform and offshore wind turbine generator system |
| 03/28/2013 | US20130075163 Mandrel loading systems and methods |
| 03/28/2013 | US20130075083 Threaded end of a tubular component for drilling or working hydrocarbon wells, and resulting connection |
| 03/28/2013 | US20130075082 Transition End for a Plastic Pipe and Method of Installation |
| 03/28/2013 | US20130074309 Cablehead |
| 03/28/2013 | DE102006062882B4 Drill rod for manufacturing earth drilling, comprises pipe sections connected with each other by plug in couplings, and housing that is closed along its longitudinal direction and interior couplings that can be actuated from inside |
| 03/28/2013 | CA2849712A1 Adjustable fracturing head and manifold system |
| 03/28/2013 | CA2848409A1 Three-way flow sub for continuous circulation |
| 03/28/2013 | CA2848224A1 Composite limit collar |
| 03/27/2013 | EP2573315A2 Centralizer |
| 03/27/2013 | EP2573314A1 Guide funnel |
| 03/27/2013 | EP2571753A1 Seabed-to-surface linking equipment including a flexible pipe guiding structure |
| 03/27/2013 | CN202832491U High pressure gas well testing adjustable type inner blowout prevention pipeline |
| 03/27/2013 | CN202832455U Fireflood well gas-proof and oil recovery integrated tubular column |
| 03/27/2013 | CN202832453U Steam assisted gravity drainage (SAGD) producing well single tubing pumping process tubular column |
| 03/27/2013 | CN202832435U Production tubular column used for rhythm oil layer gravity gas drive |
| 03/27/2013 | CN202832279U Integral helical-groove directional drill pipe |
| 03/27/2013 | CN202832278U Coiled tubing component |