| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
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| 08/22/2012 | CN202391346U Tensioned mooring underwater drilling system |
| 08/22/2012 | CN202391343U Downhole in-hole drilling machine |
| 08/22/2012 | CN202391338U Device for quickly punching ceiling |
| 08/22/2012 | CN102644453A Novel Spar deep sea oil-exploration and oil-extraction engineering platform |
| 08/22/2012 | CN101864896B Hydraulic drilling rig device on construction drill carriage |
| 08/21/2012 | CA2736776C Articulation assembly for moving a drill mast |
| 08/17/2012 | CA2854414A1 Low headroom confined space geoexchange drilling system and method |
| 08/17/2012 | CA2738506A1 Low headroom confined space geoexchange drilling system and method |
| 08/15/2012 | CN202381100U Drill loader operating device |
| 08/15/2012 | CN202380974U Vehicle-mounted slant hole drilling machine |
| 08/15/2012 | CN202380972U Traveling telescopic derrick integrated drill |
| 08/15/2012 | CN202380691U Punching device |
| 08/14/2012 | CA2538625C Combination workover and drilling rig |
| 08/09/2012 | WO2012067329A9 Temperature and pressure monitoring system of sealed derrick structure |
| 08/09/2012 | WO2012037313A3 Modular rig design |
| 08/08/2012 | CN202370438U Height adjustable hanging buttress |
| 08/08/2012 | CN202370437U Mast extending device and mast of rotary drilling rig |
| 08/08/2012 | CN202370430U Mine rig |
| 08/08/2012 | CN102628337A Horizontal submarine polymetallic sulfide deposit area chimney sampling drill |
| 08/08/2012 | CN102628336A Batter pile construction drilling machine and construction method |
| 08/08/2012 | CN101316966B Offshore platform with movable cantilever extending outside deck |
| 08/07/2012 | US8235126 Transportable well service platform |
| 08/02/2012 | WO2012100283A1 In situ sampling and analysis system for a drill rig and a drill rig incorporating same |
| 08/02/2012 | WO2012054440A4 Offshore tower for drilling and/or production |
| 08/02/2012 | CA2824297A1 In situ sampling and analysis system for a drill rig and a drill rig incorporating same |
| 08/01/2012 | CN202360036U Mast auxiliary lifting device of rotary drilling rig |
| 08/01/2012 | CN202360035U Rotary drilling rig mast with perpendicularity displaying function |
| 08/01/2012 | CN202360034U 桅杆折叠机构 Mast folding mechanism |
| 08/01/2012 | CN202360025U Full-hydraulic CBM (coal bed methane) truck-mounted drill |
| 08/01/2012 | CN202360023U Vehicle-mounted type full-hydraulic multifunction deep drilling rig |
| 08/01/2012 | CN102619474A Universal adjustable anchor bolt and rope drilling machine |
| 07/26/2012 | US20120186882 Earth drilling machine |
| 07/25/2012 | CN202348130U Safe and labor-saving device for punching with face lifted up |
| 07/25/2012 | CN202348129U Lifting foundation pier |
| 07/25/2012 | CN202348128U Automatic derrick platform |
| 07/25/2012 | CN202348127U Operation platform of driller box |
| 07/25/2012 | CN202348126U Lifting adjustment device for derrick |
| 07/25/2012 | CN202348125U Follow-up rack for rotary drilling rig |
| 07/25/2012 | CN202348124U Main winch postposition rotary platform |
| 07/25/2012 | CN202348123U Inverted mast jitter-free hydraulic system of rotary drilling rig |
| 07/25/2012 | CN202348116U Small-module assembly type offshore platform drilling rig |
| 07/25/2012 | CN102606072A 90-degree rotational deep-hole drill rig for coal mines |
| 07/25/2012 | CN102606071A Multifunctional road pile drilling machine |
| 07/19/2012 | WO2012096648A1 Controlled hydrostatic pressure completion system |
| 07/19/2012 | CA2822883A1 Controlled hydrostatic pressure completion system |
| 07/18/2012 | CN202338208U 一种山地钻机井架 One kind of mountain derrick |
| 07/18/2012 | CN202338207U 山地钻机提升加压传动装置 Mountain rig lifting gear pressure |
| 07/18/2012 | CN202338202U 用于非开挖水平定向钻机的动力头 Trenchless horizontal directional drilling for power head |
| 07/18/2012 | CN102587830A Side slope anchoring hole drilling construction equipment and side slope anchoring hole drilling construction method |
| 07/18/2012 | CN102587826A Drill arm assembly for multifunctional road pile drilling machine |
| 07/18/2012 | CN102587823A All-directional reversing device for rock drill |
| 07/18/2012 | CN101864902B Omnibearing rolling type shifter for oil drilling machine module |
| 07/11/2012 | CN202326844U Construction machinery and hydraulic device thereof |
| 07/11/2012 | CN202325271U 水平定向钻机推拉机构 Horizontal directional drilling sliding mechanism |
| 07/11/2012 | CN202325270U 波浪补偿分离式液压钻机 Heave Compensation separate hydraulic rig |
| 07/11/2012 | CN202325269U Double-hoist hydraulic elevating derrick |
| 07/11/2012 | CN202325268U 一种隧道打眼辅助装置 A tunneling drill assist device |
| 07/11/2012 | CN202325267U 抽油机底座骑马式辅助支撑装置 Pumping base saddle auxiliary support device |
| 07/11/2012 | CN202325266U 矿用大倾角穿层抽放钻机 Steep wear mine drainage layer Rig |
| 07/11/2012 | CN202325265U 一种长螺旋钻机装车支架 A long-auger loading bracket |
| 07/11/2012 | CN202325264U 一种钻机后台底座走台 One kind of rig go backstage base station |
| 07/11/2012 | CN202325263U 长螺旋钻机 Long auger |
| 07/11/2012 | CN202325262U 一种深孔钻机 One kind of deep hole drilling machine |
| 07/11/2012 | CN202325261U 一种桅杆及使用该桅杆的旋挖钻机 One kind of mast and the mast using rotary drilling rig |
| 07/11/2012 | CN202325260U 螺旋钻机 Auger |
| 07/11/2012 | CN202325259U 一种螺旋钻机 In a spiral rig |
| 07/11/2012 | CN202325258U 底盘与桩架间的连接结构及使用该连接结构的钻机 Connection structure and use of the rig that connection structure between the chassis and the pile frame |
| 07/11/2012 | CN202325257U 一种钻机桅杆保护液压装置 One kind of rig mast hydraulic device protection |
| 07/11/2012 | CN202325256U Slideable guide beam frame for air drill |
| 07/11/2012 | CN202325255U Split sliding seat |
| 07/11/2012 | CN202325254U 一种用于钻机桅杆支撑的多向转动座 A multi-directional rotation of the seat support rig mast |
| 07/11/2012 | CN202325253U 推进架 Advance frame |
| 07/11/2012 | CN202325234U 多功能全液压钻机 Multifunctional Hydraulic Drill |
| 07/11/2012 | CN202325233U 一种履带式液压锚杆钻车 Tracked hydraulic anchor drill rig |
| 07/11/2012 | CN202325232U 一种快速成孔钻机 A fast into drilling rig |
| 07/11/2012 | CN202325230U 一种集吊机于一体的步履式旋挖钻机 A set of cranes in one of the walking type rotary drilling rig |
| 07/11/2012 | CN202325226U 一种长螺旋钻机 A long-auger |
| 07/11/2012 | CN202325225U 一种铁路施工螺旋钻注机 A railway construction auger injection machine |
| 07/11/2012 | CN202325222U Booster of electric hammer |
| 07/11/2012 | CN202322242U Rotary type derrick operating vehicle |
| 07/11/2012 | CN202322171U 钻机辅助支撑杆的安装装置 Rig auxiliary strut mounting device |
| 07/11/2012 | CN102561954A Multifunctional head frame |
| 07/11/2012 | CN102561939A Pipe shed drilling rig with front-mounted and rear-mounted lifting mechanisms |
| 07/11/2012 | CN102561324A Construction method for making piles of short pile machine with adjustable arm support in rotary drill mode |
| 07/11/2012 | CN102002941B Large-aperture long screw rig, reinforcement cage concreting device and fabricating method of large-aperture deep pile |
| 07/05/2012 | US20120167485 Fast transportable drilling rig system |
| 07/04/2012 | CN202300214U 一种海洋平台9000米钻机天车 A MARINE platform 9000 meters drilling rig crane |
| 07/04/2012 | CN202300213U 钻机升降式井架 Lift derrick rig |
| 07/04/2012 | CN202300212U 可调节孔距的钻进装置 Adjustable pitch of drilling equipment |
| 07/04/2012 | CN202300211U 一种通井车专用井架底座 One kind of drifting car special substructure |
| 07/04/2012 | CN202300210U 一种手电钻支架 One kind of hand drill bracket |
| 07/04/2012 | CN202300209U 顶板支吊架安装成套装置 Roof hanger installation sets of devices |
| 07/04/2012 | CN202300208U 一种新型锚杆钻机 A new bolt rig |
| 07/04/2012 | CN202300197U 背包式集成底座轻便钻机 Backpack-style integrated pedestal portable drilling rig |
| 07/04/2012 | CN102536128A Pipe-roof drilling rig with synchronous-traversing rotary table |
| 07/04/2012 | CN102536127A Rotary drilling rig and mast device thereof |
| 07/04/2012 | CN102536126A Dual parallel four-rod linkage drilling arm |
| 07/04/2012 | CN102536120A Drilling and positioning device for down-the-hole drill |
| 07/04/2012 | CN102536119A Drilling-digging exchanger |
| 07/04/2012 | CN102536117A Machine-mounted type multipurpose anchor rod drilling machine |