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