Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
11/2010
11/03/2010EP2245233A1 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect
11/03/2010EP2245232A1 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect
11/03/2010EP1977357B1 Method and system for evaluating groups of threaded connections
11/03/2010CN201621394U High-sealing oil bushing threaded connector
11/03/2010CN201620852U Underground separate layer oil production pipe column under ground remote control
11/03/2010CN201620837U Perforation and electric pump combined testing string
11/03/2010CN201620787U Releasing tool for wireless drill clinometer
11/03/2010CN201620786U Detacher for pumping rod righting ring
11/03/2010CN201620774U Novel wear-resistance drill collar
11/03/2010CN201620773U Novel welding type drill collar
11/03/2010CN201620772U A lead-buckle device
11/03/2010CN201620771U Shock absorber for drill column
11/03/2010CN201620770U Anti-fatigue drilling tool joint with external threads
11/03/2010CN201620769U Water connector for deep drilling
11/03/2010CN201620768U Self-spraying and lifting interactive column
11/03/2010CN201620767U Pipe column using technologies of multilayer mining, testing pressure by layers and obtaining yield by layers
11/03/2010CN201620766U Triangular drill rod for mine
11/03/2010CN201620765U Novel equal-diameter drill rod
11/03/2010CN201620764U Continuous bump acidified tubular column
11/03/2010CN201620756U Transmission shaft assembly of screw drilling rig capable of automatically compensating end play
11/03/2010CN101876052A Processing method for generating chemical element co-penetration layer on surfaces of screw threads of coupler
11/03/2010CN101876002A Hardening and tempering method in the process of manufacturing drill stem connector
11/03/2010CN101035962B Bend stiffener
11/02/2010US7824124 Fluid dispenser assembly
11/02/2010US7823646 Riser tensioner with lubricant reservoir
11/02/2010US7823639 Structure for wired drill pipe having improved resistance to failure of communication device slot
11/02/2010CA2508453C Expandable composite tubulars
10/2010
10/28/2010WO2010122519A2 Well tubular, coating system and method for oilfield applications
10/28/2010WO2010122431A1 Threaded joint for tubes, pipes and the like
10/28/2010WO2010122342A1 Electrical wet connector in downhole environment
10/28/2010WO2010121345A1 Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry
10/28/2010WO2010121344A1 A drill bit assembly having aligned features
10/28/2010WO2010101512A3 Method of thread milling, thread, and insert and tool for thread milling
10/28/2010WO2010099283A3 Threadless drillpipe connector
10/28/2010WO2010079099A3 Auxiliary subsurface compensator
10/28/2010US20100270081 Apparatus and Method for Lateral Well Drilling Utilizing a Nozzle Assembly with Gauge Ring and/or Centralizer
10/28/2010US20100270035 System and method to expand tubulars below restrictions
10/28/2010US20100270025 Riser Buoyancy Adjustable Thrust Column
10/28/2010CA2795478A1 A drill bit assembly having aligned features
10/28/2010CA2759436A1 Electrical wet connector in downhole environment
10/28/2010CA2758669A1 Well tubular, coating system and method for oilfield applications
10/27/2010EP2243920A1 Threaded joint for tubes, pipes and the like
10/27/2010EP2243919A2 Manipulatable spider components adapted for cooperation with a vertically reciprocating control line guide
10/27/2010EP2242899A1 Electromagnetic telemetry assembly with protected antenna
10/27/2010CN201614903U 采油管柱用防油层污染单流封隔油管锚 Anti-oil pollution in the production string with single-stream tubing packer anchor
10/27/2010CN201614898U 可双向使用可开合可进行套管跟进的模块化托钎器 Bi-directional use of open and close follow-up of modular casing can be brazed care unit
10/27/2010CN201614892U 投珠式钻具减阻器 Investment Bead drill drag reduction device
10/27/2010CN201614891U 油井管保护帽 OCTG protective cap
10/27/2010CN101874175A Two-element tandem flexible joint
10/27/2010CN101871328A Planetary drill bit assembly for balancing reactive torque of drilling equipment in well drilling
10/27/2010CN101871327A Variable conicity API (American Petroleum Institute) thread oil sleeve joint
10/27/2010CN101871326A Drill pipe device
10/27/2010CN101871325A Operation tubing threaded connection structure
10/27/2010CN101871324A Connecting structure of special high-pressure completion oil pipe
10/27/2010CN101871323A Lengthened polish rod for oil well and connecting method thereof
10/27/2010CN101871315A Portable optical cable identifying embedded hole boring device
10/27/2010CN101871082A High-strength tough non-magnetic alloy and preparation method thereof
10/27/2010CN101196115B Construction method for high pressure underground gas storing well
10/26/2010US7819195 External high pressure fluid reservoir for riser tensioner cylinder assembly
10/26/2010US7819186 Downhole tool
10/21/2010WO2010120677A2 Resilient anchor
10/21/2010WO2010120613A2 Apparatus for and method of securing a centralizer to a tubular
10/21/2010WO2010120567A2 Methods for forming boring shoes for wellbore casing, and boring shoes and intermediate structures formed by such methods
10/21/2010WO2010120187A1 A communication arrangement for transmission of communication signals along a pipe line
10/21/2010WO2010118839A1 Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection
10/21/2010US20100264648 Connection methods and systems
10/21/2010US20100263932 Bit retainer assembly for a down-hole drill
10/21/2010CA2783016A1 Apparatus for and method of securing a centralizer to a tubular
10/21/2010CA2758625A1 Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection
10/20/2010EP2241717A2 System and method for communicating between a drill string and a logging instrument
10/20/2010EP2240665A2 Spiral ribbed aluminum drillpipe
10/20/2010CN201610726U 油管快速接头 Hose quick connector
10/20/2010CN201610725U 一种防抱死钻杆花篮套管装置 One kind of drill pipe casing means antilock basket
10/20/2010CN101868024A System and method of positioning search and rescue for downhole personnel
10/20/2010CN101864921A Well completion and oil production string of horizontal well and well completion and oil production processes thereof
10/20/2010CN101864912A Roller type water injection well centering device
10/20/2010CN101864911A Automatic righting anti-abrasion body of oil pumping rod
10/20/2010CN101864910A Oil-extracting well outlet pipeline with heat-insulating device
10/20/2010CN101864909A Centering striking-off oil-pumping rod
10/20/2010CN101864908A Threaded connector for pipes
10/20/2010CN101864907A Vibration damper and downhole drill comprising the same
10/20/2010CN101864906A Bending-resistant oil casing threaded connection structure
10/20/2010CN101864905A Magnetic induction type signal transmission drill pipe joint
10/20/2010CN101864904A Operation device for stripping sucker rod at pressure
10/20/2010CN101864903A Processing method of geological drill stem
10/20/2010CN101864897A Method for controlling eccentric displacement vector of rotary steering tool
10/20/2010CN101864768A Pile-forming drilling tool for screw pile and pile-forming construction method thereof
10/20/2010CN101864542A Steel for high-frequency resistance straight weld oil well pipe and production method thereof
10/19/2010US7814996 Spiral ribbed aluminum drillpipe
10/19/2010US7814969 Wet mate connection for ESP pumping system
10/19/2010US7814633 Pipe centralizer and method of forming
10/19/2010CA2668910C Expandable underreamer/stabilizer
10/16/2010CA2700029A1 Chuck assembly for a down-hole drill
10/15/2010CA2663348A1 Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method
10/14/2010WO2010118439A2 Interference-fit stop collar and method of positioning a device on a tubular
10/14/2010WO2010118186A2 Friction reducing wear band and method of coupling a wear band to a tubular
10/14/2010WO2010118136A1 Reduced drag centralizer
10/14/2010WO2010115492A2 Wired drill pipe with improved configuration
10/14/2010WO2010086658A3 Electric submersible pump, tubing and method for borehole production
10/14/2010WO2010078366A3 Marine drilling riser connector with removable shear elements
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