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)
11/2011
11/10/2011	US20110272139 System for drilling a wellbore
11/10/2011	CA2801389A1 Safety system for deep water drilling units using a dual blow out preventer system
11/10/2011	CA2798048A1 System and method for an automatically adjusting force engine and assisted storage
11/09/2011	EP2384849A1 Hollow drill and method for its manufacture
11/09/2011	EP1885994B1 A device for selective movement of well tools and also a method of using same
11/09/2011	CN202031586U Internal member of horizontal orientation sampling drilling tool
11/09/2011	CN202031569U Sliding underground guider for resistance
11/09/2011	CN202031563U Wellhole double-hollow sucker rod hot-water circulation heating device
11/09/2011	CN202031556U Water plugging tubular column of bridge plug
11/09/2011	CN202031520U Joint device for underwater dry-type Christmas tree sealed cabin
11/09/2011	CN202031497U Special arciform centralizer
11/09/2011	CN202031496U Rigid centralizer for oil tube
11/09/2011	CN202031495U Rotary type wear-resistant alloy sucker rod centralizer
11/09/2011	CN202031494U Novel high-wear-resistant centering device of sucker rod
11/09/2011	CN202031493U Thermal variable stress two-way compensator
11/09/2011	CN202031492U Wear-resistant sucker rod coupling
11/09/2011	CN202031491U Oil well sand flushing tube-rod coupling
11/09/2011	CN202031490U Spacer block device for deep sea tower type vertical pipe
11/09/2011	CN202031489U Drill rod connected through spline
11/09/2011	CN202031475U Combined drilling device
11/09/2011	CN202031080U Hole drilling, disc rotationally-expanding and hole cleaning all-in-one machine
11/09/2011	CN102235155A Method for designing position of directional well sucker rod string centering device
11/09/2011	CN102235154A Stand pipe fixing device
11/09/2011	CN101581202B Upper feed pipe nipple device of riser pipe under simulated injection method
11/08/2011	US8052176 Connection apparatus and method
11/08/2011	US8051927 Percussive drill bit for rock drilling and method for the manufacture of such a drill bit
11/08/2011	US8051912 Armored flat cable signalling and instrument power acquisition
11/08/2011	CA2495883C Tubular threaded joint which is impervious to the external environment
11/08/2011	CA2443075C Assembly of hollow torque transmitting sucker rods and sealing nipple with improved seal and fluid flow
11/04/2011	CA2737504A1 Drilling stabilizer
11/03/2011	WO2011137348A1 Apparatus and method for determining axial forces on a drill string during underground drilling
11/03/2011	WO2011136714A1 Drill bit for percussive rock drilling
11/03/2011	WO2011134636A2 Drilling or extraction pipe string
11/03/2011	WO2011134085A1 A continuous rod pump drive system
11/03/2011	US20110266792 Dismountable Connector for an Undersea Petroleum Plant
11/03/2011	US20110266374 Slurry Outlet in a Gravel Packing Assembly
11/03/2011	US20110266069 Casing shoes including cutting elements, cutting elements for earth-boring tool, and related methods
11/03/2011	US20110266063 Steerable drilling system
11/03/2011	US20110266006 Hydraulic surface connector
11/03/2011	CA2795743A1 Drill bit for percussive rock drilling
11/02/2011	EP2383421A1 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig
11/02/2011	EP2383420A1 Drill bit for percussive rock drilling
11/02/2011	EP2054347B1 Treating liquids in oil extraction
11/02/2011	CN202025542U Logging cable sealed by multiple layers of stainless steel tubes
11/02/2011	CN202023557U Cable inlet device for power and signal transmission drill rod
11/02/2011	CN202023548U Oilfield fracturing nonmetal special hose
11/02/2011	CN202023546U Annular fracturing injection four-way joint
11/02/2011	CN202023514U Oil pipe righting device for well drilling and repairing operations
11/02/2011	CN202023513U Partial round thread oil casing
11/02/2011	CN202023512U Quickly connected marine riser device
11/02/2011	CN202023511U Drill rod of cutting drill machine
11/02/2011	CN202023510U Prism cardan shaft
11/02/2011	CN202023509U Drilling rod made with narrow gap welding technique
11/02/2011	CN202023190U Screw pile machine pile forming device
11/02/2011	CN102232138A Anti-whirl drill bits, wellsite systems, and methods of using the same
11/02/2011	CN102230377A Multifunctional gas lifting strata testing string
11/02/2011	CN102230363A Device and method for drilling and forming hole in coal rock in structural belt
11/02/2011	CN102230362A Geared drill stabilizer repairing method
11/02/2011	CN102230361A Intelligent rotating joint
11/02/2011	CN102230360A Water joint without water leakage
11/01/2011	USRE42877 Methods and apparatus for wellbore construction and completion
11/01/2011	US8047297 System for and method of restraining a subsurface exploration and production system
11/01/2011	US8047294 Dual flapper safety valve
11/01/2011	US8047281 Sleeve for expandable tubular threaded connection and method of expanding tubular thereof
11/01/2011	US8047057 Output mode switching apparatus
11/01/2011	CA2634650C Permanent downhole deployment of optical sensors
11/01/2011	CA2598587C Centralization and running tool and method
10/2011
10/30/2011	CA2738500A1 A continuous rod pump drive system
10/30/2011	CA2702457A1 Tubular connection floating shoulder ring
10/27/2011	WO2011094429A3 Shock reduction tool for a downhole electronics package
10/27/2011	WO2011061681A3 Rugged coiled tubing connector
10/27/2011	WO2011054020A3 Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor
10/27/2011	US20110259645 Rotary steerable tool
10/27/2011	US20110259643 Casing and liner drilling shoes having spiral blade configurations, and related methods
10/27/2011	US20110259608 Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods
10/27/2011	US20110259606 Casing shoes having drillable and non-drillable cutting elements in different regions and related methods
10/27/2011	US20110259605 Casing and liner drilling shoes having selected profile geometries, and related methods
10/27/2011	US20110259604 Casing and liner drilling shoes having integrated operational components, and related methods
10/27/2011	DE102010018383A1 Bohr- oder Förderrohrgestänge Drilling or production tubing
10/26/2011	EP2381063A2 Downhole releasable connector
10/26/2011	EP2379895A2 Vortex-induced vibration (viv) suppression of riser arrays
10/26/2011	EP2379837A2 Marine drilling riser connector with removable shear elements
10/26/2011	CN202017465U Multi-head spiral pipe
10/26/2011	CN202017464U Long spiral squeezed branch pile drilling tool
10/26/2011	CN202017463U Retract-angle-free deviated round thread oil casing pipe
10/26/2011	CN202017462U Telescopic drill rod
10/26/2011	CN202017461U High anticorrosive alloyed surface modified sucker rod
10/26/2011	CN202017460U Anti-corrosive alloyed surface modification oil casing pipe
10/26/2011	CN202017459U Drill rod with double powder discharging channels
10/26/2011	CN202017458U Drill rod multiplying device for drilling machine
10/26/2011	CN102227541A Self-stabilized and anti-whirl drill bits and bottom-hole assemblies and systems for using same
10/26/2011	CN102226389A Coal mine drilling anti-collapse hole pipe network and anti-collapse hole method
10/26/2011	CN102226380A Method for inhibiting vortex-induced vibration of marine riser
10/26/2011	CN102226379A Sleeve for marine riser
10/26/2011	CN102226378A Reinforced riser pipe combined structure and construction method thereof
10/26/2011	CN102226377A Drill string equipped with downhole blowout preventer and working method thereof
10/26/2011	CN101571034B Sucker rod spray welding coupling
10/25/2011	US8044820 Method and system for performing operations and for improving production in wells
10/25/2011	US8042842 Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s)
10/25/2011	US8042611 Field joint for a downhole tool

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