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)
03/2014
03/06/2014WO2014035254A1 Water damper device
03/06/2014WO2014033072A2 Connection assembly
03/06/2014US20140060856 Resettable downhole torque limiter and related methods of use
03/06/2014US20140060851 Oil and Gas Riser Spider With Low Frequency Antenna Apparatus and Method
03/06/2014US20140060846 Downhole casing system
03/06/2014US20140060838 Downhole Robotic Micro-Drilling System
03/06/2014US20140060817 Heavy duty rope sockets and related methods
03/06/2014US20140060801 Preload and Centralizing Device for Milling Subterranean Barrier Valves
03/06/2014US20140060415 Production Riser
03/05/2014EP2702231A2 Systems and methods for making subsea fluid conduit connections
03/05/2014EP2702228A2 Improved limit collar
03/05/2014EP2702224A2 Downhole release joint
03/05/2014CN203463064U Wellhead flow guide pipe compensation device
03/05/2014CN203463041U Bit pressure exerting device of horizontal well
03/05/2014CN203463035U Screwed joint for petroleum casing pipe
03/05/2014CN203463034U Scalable rotary joint
03/05/2014CN203463033U Oil rod connector of reaction kettle
03/05/2014CN203463032U Core barrel reducer union structure
03/05/2014CN203463031U Elbow connector guiding tool
03/05/2014CN203463030U Three-hole tube specially used for plugging device
03/05/2014CN203463029U Well pipe structure
03/05/2014CN203463028U Efficient zero-slips-bite drill rod for improving hydraulic efficiency
03/05/2014CN203463027U Zero-slip-bite drill stem capable of improving hydraulic efficiency
03/05/2014CN203463026U Drill stem capable of improving hydraulic efficiency
03/05/2014CN203463025U Sandwich drill rod
03/05/2014CN203462473U Slurry transporting device for drilling machine power head
03/05/2014CN103620155A Connection assembly
03/05/2014CN103620154A Slip joint and method of operating a slip joint
03/05/2014CN103619699A A buoyancy element, riser assembly including a buoyancy element and a method of supporting a riser
03/05/2014CN103615284A Novel hole sealing process of drill-rod-type gas hole sealing machine
03/05/2014CN103615223A Concentric water distributor and slimhole ground adjustable layered injection string
03/05/2014CN103615201A Centering device for drill rod in hole of engineering driller
03/05/2014CN103615200A Guide pillar type continuous loop connection pup joint for drilling
03/05/2014CN103615199A Oil extraction processing device for achieving steam injection, oil extraction and temperature-pressure real-time monitoring in shaft of horizontal well with three tubes
03/05/2014CN103614613A Drill pipe joint and preparation method thereof
03/05/2014CN102421985B Riser buoyancy adjustable thrust column
03/05/2014CN102177307B Auger boring machine
03/05/2014CN102027186B Threaded joint with improved resilient seal ring
03/05/2014CN101463711B Heat dissipation
03/04/2014US8665110 Transmitting electric power into a bore hole
03/04/2014US8662205 System and method for damping vibration in a drill string
03/04/2014US8662177 Hydraulic fracture diverter apparatus and method thereof
03/04/2014US8662166 Low clearance centralizer
03/04/2014US8662165 Fiber support arrangement and method
02/2014
02/27/2014WO2014031993A1 Drilling assembly
02/27/2014WO2014031817A1 Apparatus and method for drillng a wellbore, setting a liner and cementing the wellbore during a single trip
02/27/2014WO2014031608A2 Elliptical undercut shoulder for specialty pipe connectors
02/27/2014WO2014029854A1 A system and a method for separating liquid and gas flowing through a multiphase pipeline
02/27/2014WO2013103786A3 Gravel pack inner string adjustment device
02/27/2014WO2013055691A3 Method for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well
02/27/2014US20140054886 Tapered Spline Connection for Drill Pipe, Casing, and Tubing
02/27/2014US20140054086 Shearable drill pipe and method
02/26/2014EP2699759A2 Galvanically isolated exit joint for well junction
02/26/2014EP2699758A2 Downhole tool, method & assembly
02/26/2014EP2699757A2 Slip joint and method of operating a slip joint
02/26/2014EP2699756A2 Composite component deployment configurations
02/26/2014EP2699755A2 Hybrid riser system
02/26/2014EP2699754A2 Subsea conduit system
02/26/2014CN203452760U Steam injection sealing inserting tube
02/26/2014CN203452674U Chambering drill rod
02/26/2014CN203452673U Nonmagnetic drill collar component for slim hole
02/26/2014CN203452672U Nonmagnetic drill collar component for slim hole
02/26/2014CN203452671U Nonmagnetic drill collar component for slim hole
02/26/2014CN203452670U Fluid power variable-diameter stabilizer with telescopic supporting head
02/26/2014CN203452669U Drill rod connector protective casing
02/26/2014CN203452668U Rotary joint for axial high pressure and heavy load
02/26/2014CN203452667U High-strength petroleum tool joint
02/26/2014CN203452666U Multi-purpose reducing oil pipe nipple device
02/26/2014CN203452665U Hydraulic hard-tube connecting system of side-wall corer
02/26/2014CN203452664U Movable switching-off connector of fiber-reinforced composite material anti-eccentric coiled sucker rod
02/26/2014CN203452663U Production tubular column capable of being dismounted under pressure
02/26/2014CN203452662U Horizontal well water exploration tubular column adopting segmented setting type well mouth flow method
02/26/2014CN203452661U Tubular component for entering tube column for extracting oil/gas from operation equipment
02/26/2014CN203452645U Casing driving head suitable for casing drilling
02/26/2014CN203452642U Device for floor type rotating elevating telescoping drilling tool of piling machine
02/26/2014CN103603610A Light well drill derrick casing pipe straightening hydraulic lifting device
02/26/2014CN103603609A Surface casing wellhead corrector
02/26/2014CN103603608A Bidirectional protection lubricating wear-resistant coupling
02/26/2014CN103603607A Adjustable-length drill pipe structure
02/26/2014CN102439343B Protective sleeve for a flexible pipe
02/26/2014CN102392602B Separated orientation joint assembly for oil exploration
02/26/2014CN102322229B Righting mechanism, drilling rod structure and engineering machine using same
02/26/2014CN101910548B Sealed threaded tubular connection
02/26/2014CN101827995B System and method for controlling a drilling system for drilling a borehole in an earth formation
02/25/2014US8657036 Tubing shoe
02/25/2014US8657032 Electric tool
02/25/2014US8657013 Riser system
02/25/2014US8657012 Efficient open water riser deployment
02/25/2014CA2820842C Travel joint having an infinite slot mechanism for space out operations in a wellbore
02/25/2014CA2781721C Multi-zone fracturing completion
02/24/2014CA2824658A1 New and improved sucker rod
02/20/2014US20140050536 Riser Tensioner Frame Assembly
02/20/2014US20140048248 Control line running system
02/19/2014CN203441525U Support type special pipe for gas drainage
02/19/2014CN203441454U Thermal recovery multifunctional heat injection pipe string
02/19/2014CN203441440U Thickened oil recovery system for horizontal well
02/19/2014CN203441429U Clamping hoop connecting type cement head
02/19/2014CN203441403U Dynamic mouse hole device of marine drilling platform
02/19/2014CN203441395U High-strength wear-resistant drilling rod
02/19/2014CN203441394U Rotatable sucker rod righting anti-abrasion device
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