Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619)
08/2011
08/17/2011CN102155168A Large triangular structure derricking mechanism for rotary drilling rig with auxiliary jacking mechanism
08/17/2011CN102155161A Novel omnibearing drill boom of drill loader
08/10/2011EP1751390B1 Apparatus and method for modified horizontal directional drilling assembly
08/10/2011CN201927955U 新型丛式折叠管线槽 The new cluster folding line slots
08/10/2011CN201924837U 自动折叠人字架 Automatic folding GABLE
08/10/2011CN201924836U 石油钻机井架无顶层底座 No top-level base oil derrick
08/10/2011CN201924829U Mining deep hole drill carriage unit
08/10/2011CN102146770A Drill boom beam structure of propelling beam capable of rotating by 360 degrees
08/10/2011CN101655001B Underground workshop rock wall beam trench steel tube drilling sample frame and construction method thereof
08/03/2011CN201915849U 一种用于防突钻机上的滑动支架 A method for preventing sudden slide bracket on the rig
08/03/2011CN201915848U 轻便带压作业平台 Light-pressure work platform
08/03/2011CN201915847U 旋挖钻机用三角形连接臂 Rotary drilling rig with a triangle connecting arm
08/03/2011CN201915834U 多功能钻机 Multifunctional Drilling Rig
08/03/2011CN201915833U 一种山地钻机 One kind of mountain rig
08/03/2011CN201915832U Lifting and supporting structure of mine deep hole drilling rig
08/03/2011CN201915826U 一种钻进系统及钻进设备 One kind of drilling systems and drilling equipment
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
08/03/2011CN201915817U 二次折叠式笼梯 Secondary folding ladder cage
08/03/2011CN201915407U 伸缩桩架 Telescopic pile frame
08/03/2011CN102144072A Feed mechanism for drilling systems
08/03/2011CN102140891A Variable-position overhead crane drill tower
08/03/2011CN101575946B Linkage operation method of three derricks on ocean platform
08/02/2011CA2666892C Construction apparatus with pivotable mast
07/2011
07/27/2011CN201908578U Hydraulic drill frame for drilling holes on anti-impact walls
07/27/2011CN201908565U Base plate anchor rope drilling machine for coal mine tunnel
07/27/2011CN102137982A Multi-function multi-hole drilling rig
07/27/2011CN102137788A Floating oil storage system and method
07/27/2011CN102134968A Drilling system and drilling equipment
07/27/2011CN102134966A Cutting drilling machine
07/27/2011CN101581198B Overhead hoisting and butt-joint method for box-type headframe
07/27/2011CN101040098B Housing arrangement
07/20/2011EP2345764A1 Telescopic leader mast
07/20/2011CN201902217U Pressure adjusting device on anchor rod drill machine
07/20/2011CN201902172U Drilling line abrasion-proof device for headframe of drilling machine
07/20/2011CN201902171U Rotary support tray adopting hydraulic drive
07/20/2011CN201902170U Modularized drilling machine base
07/20/2011CN201902168U Pipe roofing drilling machine with prepositive and postpositive synchronous double-turntable mechanism
07/20/2011CN201902167U Pipe shed drilling rig with front lifting mechanism and rear lifting mechanism
07/20/2011CN201902160U Drilling machine capable of quarrying stone in cave/channel and drilling device
07/20/2011CN101575942B Pneumatic anchor rod hammer drill
07/14/2011WO2011085194A1 Power screwdriver having rotary input control
07/14/2011US20110168402 Offshore unit and method of installing wellhead platform using the offshore unit
07/13/2011CN201896587U Support structure of mining drill carriage
07/13/2011CN201896585U Pipe-roof drilling rig with synchronous-traversing rotary table
07/13/2011CN201896577U Wire pole pit boring machine
07/12/2011US7975771 Method for running casing while drilling system
07/12/2011CA2492618C Portable fluid containment pad
07/06/2011EP2340348A2 Drilling station
07/06/2011CN201891389U Self mounting/dismounting device of rotary drilling rig
07/06/2011CN102116136A Reverse circulation drill and gripper for same
07/06/2011CN101575945B Desert guy line pile
07/06/2011CN101575944B Guy line pile
06/2011
06/29/2011EP2337922A2 Drilling rig and mounting method therefor
06/29/2011EP2337921A1 Articulation assembly for moving a drill mast
06/29/2011CN201885703U Oil derrick calibration instrument in oil field
06/29/2011CN201883951U Overturn prevention device of piling machine
06/29/2011CN201883950U Foldable telescopic chassis of sampling drilling rig
06/29/2011CN201883940U Electrically-driven lifting punching machine
06/29/2011CN201883934U Hydraulic lifting type roof punching machine
06/29/2011CN102108837A Method and device for moving drilling derrick on marsh or mudflat
06/29/2011CN101538987B Anchoring drilling machine based on working mode of double-pump complementation automatic merging
06/29/2011CN101509354B External hanging drilling slot for platform
06/23/2011WO2011075493A1 Mining machine with booms providing enhanced rib access
06/23/2011WO2011074951A1 A drilling installation
06/22/2011CN201874479U Construction frame for horizontal drilling in bridge section sound barrier
06/22/2011CN201874478U Tower hoisting device for drilling rig tower
06/22/2011CN201874477U Hydraulic support self-locking device
06/22/2011CN201874476U Horizontal extension mechanism for trapezoidal K-shaped derricks
06/22/2011CN201874475U Low-position installation sleeve-type derrick
06/22/2011CN201874458U Full-automatic lifting electric drilling rig
06/22/2011CN201874457U Cluster well drilling machine conveying device
06/22/2011CN201874452U Hydraulic drill part
06/22/2011CN201874451U Drilling device of hydraulic drilling machine
06/22/2011CN102102487A Multifunctional hydraulic pile hammer
06/22/2011CN101260785B Drill carriage front and back supporting structure
06/16/2011WO2011071757A2 Multi-function multi- hole drilling rig
06/16/2011US20110139043 Drilling platform
06/16/2011CA2783675A1 Multi-function multi-hole drilling rig
06/15/2011EP2332822A2 Drillship or semi-submersible and multi-activity drilling assembly
06/15/2011CN201865589U Rotating mechanism of drill impelling beam
06/15/2011CN201865588U Multifunctional pile rack
06/15/2011CN201865587U Rotary drilling rig and mast seat thereof
06/15/2011CN201865586U Engineering machinery and mast base thereof
06/15/2011CN201865585U Multifunctional fast drilling machine rack
06/15/2011CN201865574U Integral core drilling machine of multifunctional self-walking type tower crane
06/15/2011CN201865573U Crawler drill for belt-span drilling
06/15/2011CN201865572U Novel rotary drilling rig
06/15/2011CN201865565U Rotary drilling rig
06/15/2011CN201865564U On-board rotary drilling rig
06/15/2011CN201865134U Salt lake drilling grooving machine
06/15/2011CN102094579A Full-hydraulic tire rock drilling anchoring drill carriage
06/15/2011CN101133228B Damping device for an output shaft in a gearbox
06/09/2011US20110132664 Drill mast articulation assembly
06/08/2011EP2329094A1 Feed mechanism for drilling systems
06/03/2011WO2011065836A1 Device for a towel for well operations and use of same
06/01/2011DE10113561B4 Vorschubvorrichtung für eine Ramm- und/oder Bohrvorrichtung Feeding device for driving and / or drilling device
06/01/2011CN201851021U Rotary drill platform leveling control system
06/01/2011CN201851020U Claw type support mechanism for tunnel drilling rig
06/01/2011CN201851010U Rotary drilling rig
06/01/2011CN201851002U PLC (Programmable Logic Controller) controlled frequency conversion pile driver
1 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ... 47