| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 05/15/2013 | CN103104201A Multidirectional adjustment rotary-type pipe sleeve centering device |
| 05/15/2013 | CN103104200A Rotating stir emulsification and viscosity reduction oil extraction pipe column under high thick oil pump and working method thereof |
| 05/15/2013 | CN103104199A Casing pipe for producing well |
| 05/15/2013 | CN102359347B Machine-locked drilling machine, drilling rod monitoring method, controller and monitoring system thereof |
| 05/15/2013 | CN102199995B Process for producing high-precision special threaded sleeve pipe coupling |
| 05/15/2013 | CN101812976B Adjustable multiple coil extruding and expanding drilling tool |
| 05/15/2013 | CN101793128B Blowout preventing tubing anchor |
| 05/14/2013 | US8439132 Microtunnelling system and apparatus |
| 05/14/2013 | US8439128 Device for cleaning and doping equipment for threads |
| 05/14/2013 | US8439127 Drive device for a boring bar |
| 05/14/2013 | US8439122 Radial spring latch apparatus and methods for making and using same |
| 05/14/2013 | US8439120 Method of sealing annular space between inner and outer upright tubes |
| 05/14/2013 | US8439114 Method and apparatus for orienting perforating devices |
| 05/14/2013 | US8439105 Completion system for subsurface equipment |
| 05/14/2013 | CA2492981C Monobore wellbore and method for completing same |
| 05/14/2013 | CA2455396C Insulating device and assembly |
| 05/10/2013 | WO2013066746A1 Method and system for predicting a drill string stuck pipe event |
| 05/10/2013 | WO2013066722A1 Providing energy to a passive wireless tag |
| 05/10/2013 | WO2013066431A1 Lateral buckling mitigation apparatus, methods and systems for use with subsea conduits |
| 05/10/2013 | WO2013066311A1 A contigency release device that uses right-hand torque to allow movement of a collet prop |
| 05/10/2013 | WO2013037706A3 Downhole gauge assembly |
| 05/10/2013 | WO2013036915A3 Conductor bend restrictor |
| 05/10/2013 | WO2013028803A3 Downhole tool and method of use |
| 05/10/2013 | WO2013028593A3 Riser-mounted guide assembly for umbilical deployment |
| 05/10/2013 | WO2012156434A3 Method and system for protecting a conduit in an annular space around a well casing |
| 05/10/2013 | WO2012143722A3 Downhole tool, method & assembly |
| 05/10/2013 | CA2854486A1 Lateral buckling mitigation apparatus, methods and systems for use with subsea conduits |
| 05/10/2013 | CA2852765A1 Method and system for predicting a drill string stuck pipe event |
| 05/10/2013 | CA2852543A1 Providing energy to a passive wireless tag |
| 05/10/2013 | CA2844709A1 A contigency release device that uses right-hand torque to allow movement of a collet prop |
| 05/09/2013 | US20130114999 Driver for torque and rotation transfer from a rotational chuck to a drill steel |
| 05/09/2013 | US20130112481 Drill members for mine roofs |
| 05/09/2013 | CA2794302A1 Erosion resistant flow nozzle for downhole tool |
| 05/08/2013 | EP2589744A1 Landing String Compensator |
| 05/08/2013 | EP2588707A2 Retrievable subsea device and method |
| 05/08/2013 | EP2588706A1 Driver for torque and rotation transfer from a rotational chuck to a drill steel |
| 05/08/2013 | CN202930148U Anticorrosive magnetic stripe of magnetic-force-supported sucker rod centralizer |
| 05/08/2013 | CN202926511U Drilling power tool and novel drilling tool |
| 05/08/2013 | CN202926314U Insulation nipple |
| 05/08/2013 | CN202926248U An eccentric wear device for an oil field screw pump well |
| 05/08/2013 | CN202926247U Long-tail-pipe casing-corrosion-preventing sucker rod string |
| 05/08/2013 | CN202926246U Long-tail-pipe casing-corrosion-preventing well flushing protection device |
| 05/08/2013 | CN202926245U Centralizing device used for preventing shackles of pumping unit polish rod and sucker rod from reversing |
| 05/08/2013 | CN202926244U Guide screw drilling tool with rotatable centralizer |
| 05/08/2013 | CN202926243U Electrical heating sucker rod eccentric wear prevention device |
| 05/08/2013 | CN202926242U Anti-eccentric-wear sucker rod centering device |
| 05/08/2013 | CN202926241U Idler wheel type centralizer for sucker rod |
| 05/08/2013 | CN202926240U Left-hand thread double joint |
| 05/08/2013 | CN202926239U Special coupling connected with pipe body for coal bed gas |
| 05/08/2013 | CN202926238U Expansion short piece special for expansion sleeving |
| 05/08/2013 | CN202926237U Heavy caliber double-thread oil casing |
| 05/08/2013 | CN202926236U Thread structure of heavy caliber double-thread oil casing |
| 05/08/2013 | CN202926235U Destabilization-prevention oil pipe joint |
| 05/08/2013 | CN202926234U Inner pipe and outer pipe connecting mechanism of double-wall drill rod |
| 05/08/2013 | CN202926233U Drill rod connector |
| 05/08/2013 | CN202926232U Adjustable salvage bent connection head |
| 05/08/2013 | CN202926231U Sucker rod coupling for dispersing buoyancy |
| 05/08/2013 | CN202926230U A rotary drilling rig drill rod provided with a self-extension concrete conveying pipe |
| 05/08/2013 | CN202926229U Polymer flooding and ternary composite well corrosion resisting oil pumping machine polished rod |
| 05/08/2013 | CN202926228U Spline type high-pressure swinging and spraying drill stem |
| 05/08/2013 | CN202926227U Destabilization-prevention oil pipe compensator |
| 05/08/2013 | CN202926226U Inserted joint casing for drilling machine |
| 05/08/2013 | CN103097643A Clamp |
| 05/08/2013 | CN103089225A Anti-washout annular injection fracturing six way |
| 05/08/2013 | CN103089215A Oil sleeve annulus chemical agent mixing viscosity reduction process pipe column |
| 05/08/2013 | CN103089170A Extensible drill pipe of long spiral drilling pressure filling pile machine and construction method thereof |
| 05/08/2013 | CN103089169A Opening and closing type drilling tool centralizing device |
| 05/08/2013 | CN103089168A Casing packing joint sealing structure |
| 05/08/2013 | CN103089167A Offshore drilling pipe joint thread-loosening preventive structure |
| 05/08/2013 | CN103089166A Sucker rod connector |
| 05/08/2013 | CN103089165A Double-step threaded buckle for connecting drill rod for well drilling |
| 05/08/2013 | CN103089164A Torsion-resistant connecting structure of joint of drill pipe |
| 05/08/2013 | CN103089163A High abrasion resistant steel-plastic composite coupling |
| 05/08/2013 | CN103089162A Integral type mining drill rod |
| 05/08/2013 | CN103089161A Elevation hole drilling reverse slip casting sleeve and sleeve fixing technology |
| 05/08/2013 | CN103089160A Sucker rod with ultra-high molecular weight polyethylene protective layer |
| 05/08/2013 | CN103089159A Intelligent drilling rod with chip and intelligent drilling rod data transmission device |
| 05/08/2013 | CN103089146A Engineering driller capable of conducting superfluid concrete grouting pile driving construction on hard rock strata |
| 05/08/2013 | CN102003150B Convex counterweight centralizer for pumping unit |
| 05/07/2013 | US8434571 Securement of lines to downhole well tools |
| 05/07/2013 | US8434570 Drill packer member, drill pipe, and corresponding drill pipe string |
| 05/07/2013 | US8434567 Borehole drilling apparatus, systems, and methods |
| 05/07/2013 | US8434557 Methods and systems for controlling flow of hydrocarbons from a structure or conduit |
| 05/02/2013 | WO2013062735A2 Riser tensioner system for off shore oil platforms and petroleum production processes |
| 05/02/2013 | WO2013028800A3 Downhole tool and method of use |
| 05/02/2013 | WO2013028383A3 Chemical injection system |
| 05/02/2013 | WO2013025364A3 System for enabling selective opening of ports |
| 05/02/2013 | WO2012077132A4 Turbulence free ring |
| 05/02/2013 | US20130106102 Torque enhanced threaded connection |
| 05/01/2013 | EP2586961A2 Sensor mounting assembly for drill collar stabilizer |
| 05/01/2013 | CN202914059U Steam injection allocation technology pipe of steam assisted gravity drainage (SAGD) steam injection well |
| 05/01/2013 | CN202914058U Concentric double oil pipe steam injection distribution process pipe column of steam assisted gravity drainage (SAGD) steam injection well |
| 05/01/2013 | CN202914000U Centralizing and anchoring device used for horizontal open hole |
| 05/01/2013 | CN202913983U Digitalized multifunctional beam hanger |
| 05/01/2013 | CN202913981U Tapered and threaded rock drilling fast-changing drill rod |
| 05/01/2013 | CN202913980U Sliding sleeve type internal flow passage sucker rod oil adding device |
| 05/01/2013 | CN202913979U Drill pipe stabilizer |
| 05/01/2013 | CN202913978U Large caliber varying screw pitch quick screw-on sleeve pipe threaded connecting mechanism |
| 05/01/2013 | CN202913977U Casing pipe floating collar |
| 05/01/2013 | CN202913976U Petroleum casing pipe for coal-bed gas well |