Patents for E21B 3 - Rotary drilling (4,061)
09/2011
09/28/2011CN201992021U 液力变矩器正车减速箱 Positive torque converter gearbox car
09/28/2011CN201991445U 一种筒桩旋挖钻斗 One kind of tubular pile auger drill bucket
09/28/2011CN201991443U 全液压控制桩机 Full hydraulic control pile
09/28/2011CN201991442U 油电两用旋挖钻机 Oil and electricity dual rotary drilling rig
09/28/2011CN201991438U 单变幅油缸式旋挖钻机 Single luffing cylinder type rotary drilling rig
09/28/2011CN201991437U 万向摆动背轮式旋挖钻机 Universal swing back wheel rotary drilling rig
09/28/2011CN201991436U 多功能挤压螺纹桩机 Multifunctional extrusion screw pile
09/28/2011CN201991435U 一种形成环形孔的现浇筒桩旋挖钻机 A method of forming an annular hole situ tubular piles Rotary Drilling Rig
09/28/2011CN201991434U 碾压式旋挖破岩钻斗 Compacted rock breaking drill bucket auger
09/28/2011CN101748975B Fixing seat for rotary drilling rig and rotary drilling rig
09/21/2011CN201982015U 摆动式挖坑机 Swing digging machine
09/21/2011CN201982010U 地面加压装置 Ground pressure device
09/21/2011CN201980916U 卷扬机构及应用该卷扬机构的旋挖钻机 Rotary drilling rig winch mechanism and application of the winch mechanism
09/15/2011US20110224859 Method for using mining vehicle, arrangement in mine, rock drilling rig, and mining vehicle
09/15/2011US20110220420 Feed Chain Automatic Tensioner
09/15/2011US20110220419 Accumulator membrane unit, method for production thereof and rock drilling machine including such an accumulator membrane unit
09/14/2011CN201972595U 旋挖钻机能量回收液压装置 Rotary drilling rig hydraulic energy recovery devices
09/14/2011CN201972594U 多功能液压打桩机 Multifunction hydraulic hammers
09/14/2011CN102182402A Gas discharge drilling machine capable of positioning quickly
09/14/2011CN102182401A Folding type fully hydraulic crawler pile driver
09/14/2011CN102182396A Core drilling machine power head capable of keeping off opening orifice
09/14/2011CN102182177A Integrated machine capable of drilling holes, rotating and expanding disk and cleaning holes
09/14/2011CN101424163B Single-rail connecting device and single-rail
09/13/2011CA2557868C Rotating systems associated with drill pipe for conveying electrical power to downhole systems
09/13/2011CA2514136C Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly
09/09/2011WO2009135220A3 Fill up and circulation tool and mudsaver valve
09/08/2011DE102010010036A1 Sealing arrangement for sealing annular space formed between interior connecting rod and exterior connecting rod of drilling drive unit of drilling device, has elastic sealing element for sealing gap of annular space
09/07/2011CN201963198U 一种切削钻机 A cutting rig
09/07/2011CN201963196U 路面钻孔机 Pavement Drills
09/07/2011CN201963194U 一种高效自锁型地钻齿轮箱 An efficient self-locking drill gearbox
09/07/2011CN201963193U 旋挖钻机的液压泵保护系统 Rotary drilling rig pump protection system
09/07/2011CN201963192U 太阳能渐进式独立基础地钻 Solar progressive independent foundation drill
09/07/2011CN201963191U 一种防掉螺杆钻具 An anti-off screw drill
09/06/2011US8011444 Spindle locking assembly
08/2011
08/31/2011CN201955058U 测深装置及具有该测深装置的工程机械 Sounding device and have construction machinery sounding device that
08/31/2011CN201953386U 锚杆机的操控系统及带该操控系统的锚杆机 Bolting machine control system and bolting machine with the control system
08/31/2011CN201953315U 一种筒桩旋挖钻斗 One kind of tubular pile auger drill bucket
08/31/2011CN201953309U 一种用于旋挖钻机动力头上的焊接式套筒 A rotary drilling rig power head welded sleeve
08/31/2011CN201953308U 高速液压钻机 High-speed hydraulic drilling rig
08/31/2011CN201953307U 旋挖钻机配重组合装置 Rotary drilling rig counterweight combination device
08/31/2011CN102168558A Self-walking lifting full-hydraulic auger coal mining machine
08/31/2011CN102168555A Ultralow surface full-hydraulic drill type coal mining machine
08/31/2011CN102168440A Four-drill groove making machine
08/24/2011CN201944035U 可控低速大扭矩动力头马达 Controlled low speed high torque motor power head
08/24/2011CN201943612U 水井钻机提升下压装置 Water well drilling rig lifting device under pressure
08/24/2011CN201943578U 全液压自行式锚杆钻机 Self-propelled hydraulic bolt rig
08/24/2011CN201943571U 一种适用于低温环境的修钻井机转盘 One for low-temperature environment turntable repair drilling machine
08/24/2011CN201943570U 旋挖钻机上车回转限速系统 Rotary drilling rig rotary speed limit system on the car
08/24/2011CN201943569U 具有多级限扭功能的旋挖钻机动力头系统 Rotary drilling rig power head system has a multi-level limit twist function
08/24/2011CN201943066U 一种螺杆桩机 A screw pile
08/24/2011CN102165134A Modular rotary drill head
08/24/2011CN102162334A Self-powered drill machine
08/24/2011CN102162333A Fully-electric crawler suspension remote control pile driver
08/24/2011CN102162263A Swing locating pin for grooving saw
08/24/2011CN102162248A Method for forming variable-cross-section compaction thread pile and compaction drilling tool
08/23/2011US8002048 Drilling implement and method for operating a drilling implement
08/23/2011CA2540718C Method and apparatus for controlling the ascent and descent of pipe in a well bore
08/17/2011CN201934087U 旋挖钻机的驱动控制装置及旋挖钻机 Rotary drilling rig drive control device and rotary drilling rig
08/17/2011CN201934014U 一种逆水浆循环人工钻机 One kind of pulp against the current cycle of artificial rigs
08/17/2011CN201934013U Slurry prevention power head
08/17/2011CN201934012U 旋挖钻机扫孔钻具 Sweep auger drill hole drill
08/17/2011CN201934011U 冰凌爆破开冰仪 Ice blasting open the ice instrument
08/17/2011CN201933490U 一种组合式长螺旋旋挖钻机 A modular long spiral rotary drilling rig
08/17/2011CN102155169A Extension bar and long spiral drilling machine using same
08/17/2011CN102155168A Large triangular structure derricking mechanism for rotary drilling rig with auxiliary jacking mechanism
08/17/2011CN102155157A Spiral drilling machine for forming concrete piles of different depths and shapes
08/17/2011CN102155156A High-speed hydraulic drilling machine
08/10/2011EP1751390B1 Apparatus and method for modified horizontal directional drilling assembly
08/10/2011CN201924826U 液压式植树钻坑机 Hydraulic drill hole machine planting
08/10/2011CN102145863A Engineering machinery and winching device thereof
08/09/2011US7992876 Sealing gasket for furnace body button
08/04/2011WO2011093716A1 Device and method for drilling with continous tool rotation and continous drilling fluid supply
08/04/2011WO2011093715A1 Rotary table device for a pipe string
08/04/2011US20110186323 Device for preventing vibrations in a tool spindle
08/04/2011CA2788151A1 Device and method for drilling with continous tool rotation and continous drilling fluid supply
08/04/2011CA2786078A1 Rotary table device for a pipe string
08/03/2011CN201915850U 一种钻杆装置及包括该装置的工程机械 A drill apparatus and comprising a mechanical construction of the apparatus
08/03/2011CN201915847U 旋挖钻机用三角形连接臂 Rotary drilling rig with a triangle connecting arm
08/03/2011CN201915846U 一种钻头加速器 A drill Accelerator
08/03/2011CN201915834U 多功能钻机 Multifunctional Drilling Rig
08/03/2011CN201915829U 一种转盘密封润滑管路 One kind of turntable seal lubrication pipeline
08/03/2011CN201915828U 切削钻机变速箱 Cutting rig gearbox
08/03/2011CN201915827U 一种钻井平台的动力水龙头 A drilling rig power swivel
08/03/2011CN201915826U 一种钻进系统及钻进设备 One kind of drilling systems and drilling equipment
08/03/2011CN201915825U 摆轴座 Pendulum shaft seat
08/03/2011CN201915824U 一种兼具地下连续墙施工功能的汽车旋挖钻机 Underground continuous wall construction that is both functional car rotary drilling rig
08/03/2011CN102144072A Feed mechanism for drilling systems
07/2011
07/28/2011US20110180326 Apparatus and method for cutting a wellbore
07/27/2011CN201908567U Rotating plate for deep well drilling rig
07/27/2011CN201908566U Electric auger boring type bailing tool for oil gas borehole
07/27/2011CN102134968A Drilling system and drilling equipment
07/27/2011CN102134966A Cutting drilling machine
07/27/2011CN102134964A Double-wall spindle power head for core drill
07/21/2011US20110174545 Drilling machine and method
07/20/2011CN201902161U Rotary drilling rig power head and rotary drilling rig
07/20/2011CN201902160U Drilling machine capable of quarrying stone in cave/channel and drilling device
07/14/2011WO2011035280A3 Systems and methods for improving drilling efficiency
07/13/2011EP2342420A1 Power tong device
07/13/2011CN201896611U Outburst prevention drilling rig
07/13/2011CN201896610U Outburst prevention drilling rig for coal mine
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