| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/01/2014 | CN203374269U Drilling rig bypass process device |
| 01/01/2014 | CN203374240U Constant-pressure blow-off and heat preservation device for oil well casing |
| 01/01/2014 | CN203374222U Water detection drill pipe |
| 01/01/2014 | CN203374221U Telescopic water exploitation drill rod |
| 01/01/2014 | CN203374220U Spiral type triangular alloy drill stem |
| 01/01/2014 | CN203374219U Wing structure of centering device |
| 01/01/2014 | CN203374218U Open-type spiral swing balling prevention centering device for well drilling |
| 01/01/2014 | CN203374217U Closed type spiral swing balling prevention centering device for well drilling |
| 01/01/2014 | CN203374216U Dense plugging type double channel suspension joint for injection-production integration well |
| 01/01/2014 | CN203374215U Cement injecting pipe column with timing switch |
| 01/01/2014 | CN203374214U Base structure capable of facilitating assembly and disassembly of drill rod in water well drilling rig |
| 01/01/2014 | CN203374213U Concentric inner pipe suspension structure of double-wall drill pipe |
| 01/01/2014 | CN103492663A Galvanically isolated exit joint for well junction |
| 01/01/2014 | CN103485767A Cabled transmission device for connecting threaded joint |
| 01/01/2014 | CN103485744A Separated zone water injection centralizing type packer of directional well |
| 01/01/2014 | CN103485733A Device and method for inhibiting vortex-induced vibration of rotatable hexangular impeller with openings |
| 01/01/2014 | CN103485732A Device and method for inhibiting vortex-induced vibration of spiral strake with rotating blade |
| 01/01/2014 | CN103485731A Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
| 01/01/2014 | CN103485730A Uninterrupted air drilling circulating nipple |
| 01/01/2014 | CN103485729A Quick joint for gas drilling |
| 01/01/2014 | CN103485728A Rotary drilling rig drill rod with core section rod provided with anti-falling device |
| 01/01/2014 | CN103485720A Hypothermal splitting assisted drilling machine |
| 01/01/2014 | CN103485718A Anti-friction drag-reducing tool based on pulse excitation |
| 01/01/2014 | CN101906955B Oil and gas well underground straddle packing layer-by-layer fracture acidizing tool tubular column structure |
| 12/31/2013 | US8616806 Riser support system for use with an offshore platform |
| 12/28/2013 | CA2819732A1 Downhole modular y-tool |
| 12/27/2013 | WO2013191832A1 Disintegrable centralizer |
| 12/27/2013 | WO2013191688A1 Fluid-driven power generation unit for a drill string assembly |
| 12/27/2013 | WO2013191679A1 Systems and methods of supporting a multilateral window |
| 12/27/2013 | WO2013190219A1 Drill string element with a fluid activation area |
| 12/27/2013 | WO2013189496A1 An offshore top site system |
| 12/27/2013 | WO2013140179A3 Cladding |
| 12/27/2013 | WO2013140142A3 A downhole disconnect device and method of operation |
| 12/27/2013 | CA2877388A1 An offshore top site system |
| 12/26/2013 | US20130341045 Guide attachment for use with drive systems |
| 12/26/2013 | US20130341043 Locking safety joint for use in a subterranean well |
| 12/26/2013 | US20130341007 Wireless downhole tool positioning control |
| 12/25/2013 | EP2677113A2 Downhole drilling assembly |
| 12/25/2013 | EP2677112A2 Downhole drilling assembly |
| 12/25/2013 | EP2677111A2 Improved centraliser |
| 12/25/2013 | EP2675985A1 Travel joint having an infinite slot mechanism for space out operations in a wellbore |
| 12/25/2013 | EP2675984A1 Instrument for centering tools within a wellbore |
| 12/25/2013 | EP2165040B1 Improved well intervention system |
| 12/25/2013 | CN203362153U Novel non-magnetic drill collar connection compensation device |
| 12/25/2013 | CN203362062U Integrated rigid roller centralizing joint |
| 12/25/2013 | CN203362061U High torsion resistance drill rod joint |
| 12/25/2013 | CN203362060U 可伸缩式钻杆组件 Retractable drill stem assembly |
| 12/25/2013 | CN203362059U Screw pump well distance adjusting device |
| 12/25/2013 | CN203362058U Clamping slot type clipping-abrasion-proof protective connector |
| 12/25/2013 | CN203362057U Drill rod female connector |
| 12/25/2013 | CN203362056U Drill rod male connector |
| 12/25/2013 | CN203362055U Duplex metal composite casing string of oil-gas well |
| 12/25/2013 | CN203362054U Combination device with function of casing placement through buoyancy and function of well cementation through check valves |
| 12/25/2013 | CN203362053U Novel ground drill stem filter |
| 12/25/2013 | CN203362052U Dual-inclining-type sucker rod paint draining frame |
| 12/25/2013 | CN103477020A Umbilical for use in subsea applications |
| 12/25/2013 | CN103470558A Drilling rod hydraulic deviation preventing system for deep hole linear drilling |
| 12/25/2013 | CN103470229A Sand protection matching pipe string for high-throughput sand filter pipe |
| 12/25/2013 | CN103470195A High-temperature resisting and high-pressure resisting injecting and extracting integrated double-layer hollow sucker rod |
| 12/25/2013 | CN103470194A Sleeve female thread protection device easy to assemble and disassemble |
| 12/25/2013 | CN103470193A Wellhead pipe righting device |
| 12/25/2013 | CN103470192A Double-centralization wellhead pipe fitting device |
| 12/25/2013 | CN103470191A Drill rod structure with high-station structure, and manufacturing method |
| 12/25/2013 | CN103469085A Rare earth (RE)-containing special petroleum casing for heavy oil thermal recovery wells and production method thereof |
| 12/25/2013 | CN103469070A Steel for straight welded oil casing pipes and production method thereof |
| 12/25/2013 | CN102453407B Anti-galling coating for oil sleeve joint and coating method thereof |
| 12/25/2013 | CN102444385B 花键钻杆 Spline drill |
| 12/25/2013 | CN102094578B Drilling mechanism |
| 12/24/2013 | US8613315 Complex tool for well monitoring |
| 12/24/2013 | CA2606899C Flow through subassembly for a downhole drill string and method for making same |
| 12/24/2013 | CA2604438C Downhole swivel sub |
| 12/19/2013 | WO2013187876A1 Jumper tube locking assembly and method |
| 12/19/2013 | WO2013186400A2 Method and connector assembly for connecting tubular members |
| 12/19/2013 | WO2013186342A1 Method and system for directional drilling and coupling sub |
| 12/19/2013 | WO2013126936A3 Drill pipe |
| 12/19/2013 | WO2013044279A3 Method and device for supplying at least one electrical consumer of a drill pipe with an operating voltage |
| 12/19/2013 | US20130333949 Downhole traction |
| 12/19/2013 | US20130333899 Disintegrable centralizer |
| 12/19/2013 | US20130333893 Submersible Progressive Cavity Pump Driver |
| 12/19/2013 | US20130333876 Systems and Methods of Supporting a Multilateral Window |
| 12/19/2013 | CA2875940A1 Jumper tube locking assembly and method |
| 12/18/2013 | EP2674567A1 Pipe connector |
| 12/18/2013 | EP2674566A1 Method and system for directional drilling and coupling sub |
| 12/18/2013 | EP2453107B1 Navigation system |
| 12/18/2013 | EP1982039B1 Improvements in and relating to downhole tools |
| 12/18/2013 | CN203347784U Coal mine water level detection system |
| 12/18/2013 | CN203347742U Kelly bar self-restoration splash-proof device |
| 12/18/2013 | CN203347707U Sleeve-replaceable drill tool stabilizer |
| 12/18/2013 | CN203347706U Protective connector of coiled tubing |
| 12/18/2013 | CN203347705U Drill rod connector |
| 12/18/2013 | CN203347704U Well washing and oil draining device for pumping well |
| 12/18/2013 | CN203347703U Inclined shaft anti-tripping energy-saving liquid draining device |
| 12/18/2013 | CN203347702U Energy-saving draining device of sucker rod coupling |
| 12/18/2013 | CN203347701U Oil pipe capable of preventing axial deformation of lining oil pipe |
| 12/18/2013 | CN203347700U Large-curvature centralizing sucker rod |
| 12/18/2013 | CN203347699U Wear-proof anticorrosive polyethylene pumping rod |
| 12/18/2013 | CN203347688U Deviation-control way-type drilling unit |
| 12/18/2013 | CN203347679U Large-diameter downthehole hammer drill rod |
| 12/18/2013 | CN203346877U Power head reducer of screw pile machine |
| 12/18/2013 | CN103452536A Inflow control device having externally configurable flow ports |