| Patents for E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198) |
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| 02/27/2013 | CN202755919U Feeding device of tunnel perforating machine |
| 02/27/2013 | CN202755918U Self-locking elevator pin |
| 02/27/2013 | CN202755917U Wire-line coring suspension positioning mechanism with two elastic clamps put in place and locked |
| 02/27/2013 | CN102943637A Apparatus for gripping a tubular on a drilling rig |
| 02/27/2013 | CN102943636A Winch heave compensation device for ocean floating drilling platform |
| 02/27/2013 | CN102943621A Portable drilling machine capable of implementing wire-line core drilling |
| 02/27/2013 | CN102943617A Deep-hole geological prospecting drill |
| 02/27/2013 | CN102942132A Friction sheet type windlass |
| 02/27/2013 | CN102134974B Drill stem hoisting device |
| 02/26/2013 | US8383560 Method of continuous dissolution of polyacrylamide emulsions for enhanced oil recovery (EOR) |
| 02/26/2013 | US8381840 Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method |
| 02/26/2013 | US8381834 Drive system for interconnecting attachment devices and handheld rotary power tools |
| 02/26/2013 | US8381819 Rotation mechanism |
| 02/26/2013 | US8381818 Apparatus for, and method of, landing items at a well location |
| 02/26/2013 | CA2725202C Circulation system for retrieval of bottom hole assembly during casing while drilling operations |
| 02/23/2013 | CA2787570A1 Pulsing tool |
| 02/21/2013 | WO2013025973A1 Drilling apparatus with drill guide |
| 02/21/2013 | WO2013025366A1 Degradable no-go component |
| 02/21/2013 | WO2011135311A8 Videometric Systems And Methods For Offshore And Oil-Well Drilling |
| 02/21/2013 | US20130043047 Degradable no-go component |
| 02/20/2013 | EP2558675A1 Device and method for handling drill string components and drill rig |
| 02/20/2013 | CN202746905U Oil pouring and maintaining device for beam hanger of pumping unit |
| 02/20/2013 | CN202745753U Contentious tubing operation machine multichannel flexible pipe winding-releasing cylinder |
| 02/20/2013 | CN202745752U Screwing and unscrewing machine used for large drilling tool |
| 02/20/2013 | CN202745751U Oil pumping well hollow oil sucker load discharge support bracket |
| 02/20/2013 | CN202745750U Combined oil pipe pillow |
| 02/20/2013 | CN202745749U Hydraulic oil pipe lifter for down-hole operations |
| 02/20/2013 | CN202745748U Oil pipe bridge locator with rubber sleeve |
| 02/20/2013 | CN202745747U Square clip for oil pumping well capable of being dismounted and mounted quickly |
| 02/20/2013 | CN202745746U External slips connector for continuous pipe |
| 02/20/2013 | CN202745745U Torsion-bearable slip device of continuous circulation drilling system |
| 02/20/2013 | CN202745744U Anti-dropping protection square clip of pumping unit polished rod |
| 02/20/2013 | CN202745743U Short-distance rapid drop hanger of blowout prevention assembly hanging card |
| 02/20/2013 | CN202745742U Three jaw chuck type wellhead elevator |
| 02/20/2013 | CN202745741U Clamping chuck type hanging lift sub |
| 02/20/2013 | CN202745740U Hydraulic balance large-tonnage lift sub |
| 02/20/2013 | CN202745739U Rotary drilling rig and cathead thereof |
| 02/20/2013 | CN202745738U Outer-threaded combined lifting ring |
| 02/20/2013 | CN202745737U Pipe column suspension device for mechanical well repair operation |
| 02/20/2013 | CN202745736U Casing-pipe clamping device for full-casing-pipe full-circle slewing drilling machine |
| 02/20/2013 | CN102937007A Apparatus for gripping a tubular on a drilling rig |
| 02/19/2013 | US8376049 Running tool for deep water |
| 02/19/2013 | US8376042 Installing an expandable tubular in a subsea wellbore |
| 02/19/2013 | US8376041 Apparatus and method for engaging a tubular |
| 02/19/2013 | CA2722523C Drill rod spinner device |
| 02/19/2013 | CA2670700C Devices and systems for measurement of position of drilling related equipment |
| 02/19/2013 | CA2586914C Wellbore tubular handling torque multiplier |
| 02/14/2013 | WO2013022691A2 Multilateral location and orientation assembly |
| 02/14/2013 | WO2013022541A2 Method and apparatus for connecting tubulars of a wellsite |
| 02/14/2013 | WO2013022449A1 Systems and methods for locking swivel joints when performing subterranean operations |
| 02/14/2013 | WO2013022430A1 Systems and methods for a modular drum with a common power pack unit |
| 02/14/2013 | WO2013022352A1 Device for activation of gripping jaws in continuously rotating torque tongs for use under pulling and opening of threaded connections |
| 02/14/2013 | US20130037324 Device and method for handling drill string components and drill rig |
| 02/14/2013 | DE102011110089A1 "Spannkette" "Tensioning chain" |
| 02/14/2013 | CA2844479A1 Systems and methods for locking swivel joints when performing subterranean operations |
| 02/13/2013 | EP2556308A2 Method for introducing an elongated element, in particular geo-thermal heat exchanger, into the soil |
| 02/13/2013 | EP2556206A1 Alignment assembly, drilling systems, and methods |
| 02/13/2013 | CN202733076U Torsion monitoring and electronic pressure-regulating device for hydraulic tong |
| 02/13/2013 | CN202731864U Rupture-proof packing tool |
| 02/13/2013 | CN202731853U Safety protection device for bailing device in intelligent interval bailing type pumping unit flexible rod |
| 02/13/2013 | CN202731792U Centering, guiding and clamping integrated power head |
| 02/13/2013 | CN202731791U Centering device for oil pumping unit |
| 02/13/2013 | CN202731790U Automatic opposite opening device of opening power tongs for oil field pipe |
| 02/13/2013 | CN202731789U Novel hydraulic power tongs |
| 02/13/2013 | CN202731788U Tail support for hydraulic power tongs |
| 02/13/2013 | CN202731787U Tailstock support device |
| 02/13/2013 | CN202731786U Safety slip of pumping well polish rod square clamp |
| 02/13/2013 | CN202731785U Hydraulic pressure reset decompression chuck |
| 02/13/2013 | CN202731784U Multifunctional hydraulic power slip |
| 02/13/2013 | CN202731783U Drilling machine capable of balancing drilling traction force |
| 02/13/2013 | CN202731782U Pumping unit beam hanger with support seat |
| 02/13/2013 | CN202731781U Adjustable beam hanger |
| 02/13/2013 | CN102933789A Feed chain automatic tensioner |
| 02/13/2013 | CN102933788A Apparatus for suspending a downhole well string |
| 02/13/2013 | CN102926688A Reverse-circulation drilling machine with double functions of pump lift and pump suction |
| 02/13/2013 | CN102926685A All-hydraulic automatic drilling tool conveying device for deep-well drilling rig |
| 02/13/2013 | CN102926684A Full sealed automatic compensated type slip |
| 02/13/2013 | CN102926683A Simulation experiment method for drilling-blocking prevention of rock drill in cave |
| 02/13/2013 | CN102926682A Drilling tool lifting device |
| 02/13/2013 | CN102926681A Pipe column pulling device |
| 02/13/2013 | CN102926680A String tripping device |
| 02/13/2013 | CN102926656A Vertical shaft type drilling machine capable of mechanically unscrewing drill rod |
| 02/13/2013 | CN101550819B Flexible sucker rod string uphole and downhole technique |
| 02/12/2013 | US8371790 Derrickless tubular servicing system and method |
| 02/12/2013 | US8371387 Methods and apparatus for manipulating and driving casing |
| 02/12/2013 | CA2718014C Apparatus and method for facilitating connecting and disconnecting members |
| 02/07/2013 | WO2013019754A2 Method and portable apparatus for forcing a pipeline into or out of a borehole |
| 02/07/2013 | WO2013019746A2 Method and apparatus for forcing a pipeline into or out of a borehole |
| 02/07/2013 | WO2013019390A1 Method for generating discrete fracture initiation sites and propagating dominant planar fractures therefrom |
| 02/07/2013 | WO2012016765A3 A method and a system for controlling movements of a free-hanging tubular |
| 02/07/2013 | US20130032405 Offshore Drilling Rig Fingerboard Latch Position Indication |
| 02/07/2013 | US20130032358 Method And System For Controlling A Well Service Rig Based On Load Data |
| 02/06/2013 | EP2554784A2 Offshore drilling rig fingerboard latch position indication |
| 02/06/2013 | EP2553207A1 Method and device for treatment of a pipestring section that is positioned in a set-back |
| 02/06/2013 | EP2553202A2 Method for operating a horizontal drilling device and horizontal drilling device |
| 02/06/2013 | CN202718643U Operating handle protection cover of hydraulic power tong transfer cylinder |
| 02/06/2013 | CN202718642U Power catwalk for lifting type drilling machine |
| 02/06/2013 | CN202718641U Power head workover rig in polar region |
| 02/06/2013 | CN102913154A Light iron roughneck |
| 02/06/2013 | CN102913153A Coupling tightening device |