| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 07/10/2013 | CN102155163B Deepwater multifunctional water pump drilling system and installation method thereof |
| 07/10/2013 | CN102011547B Moving device for petroleum drilling machine |
| 07/10/2013 | CN101892805B Seal structure for upward return mud in power head of shaft boring machine |
| 07/10/2013 | CN101429848B Method and apparatus for hydraulic jet side drilling for radial branching borehole |
| 07/09/2013 | US8479844 Distance holder with jet deflector |
| 07/09/2013 | US8479841 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling |
| 07/09/2013 | US8479825 Crane device and method |
| 07/09/2013 | US8479812 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 07/09/2013 | CA2663533C Method of directional drilling with steerable drilling motor |
| 07/09/2013 | CA2589600C Methods and apparatus for drilling with casing |
| 07/04/2013 | WO2013101925A2 Downhole cutting tool |
| 07/04/2013 | WO2013101736A1 System and method to facilitate the drilling of a deviated borehole |
| 07/04/2013 | WO2013100769A1 Device for anchoring in a casing in a borehole in the ground |
| 07/04/2013 | US20130168154 Sonde housing and bit body arrangement for horizontal directional drilling |
| 07/04/2013 | US20130168152 Apparatus for Directional Drilling |
| 07/04/2013 | US20130168151 System and method to facilitate the drilling of a deviated borehole |
| 07/04/2013 | US20130168100 Apparatuses and Methods for Determining Wellbore Influx Condition Using Qualitative Indications |
| 07/04/2013 | US20130168080 Radial vibrational apparatus |
| 07/04/2013 | US20130168076 Milling Tool |
| 07/04/2013 | DE102011122610A1 Device for rotating drill pipes for drilling vertical and horizontal holes in ground without platform, has tongs with rotationally movable thin rollers coated internally with elastic material, for rotary movement of drill pipes |
| 07/03/2013 | EP2610587A1 Underground Soil Excavation |
| 07/03/2013 | EP2610586A1 Underground soil excavation |
| 07/03/2013 | EP2609274A1 Apparatus and method of landing a well in a target zone |
| 07/03/2013 | CN203035088U Drill pipe traction device |
| 07/03/2013 | CN203035087U Liftable downhole hydraulic punching device |
| 07/03/2013 | CN203035086U Water diamond drill capable of walking |
| 07/03/2013 | CN203035085U Punching and rod inserting machine |
| 07/03/2013 | CN203035084U Assembly device for traveling frames of rotary drills |
| 07/03/2013 | CN203035083U Electric workover rig without guy ropes |
| 07/03/2013 | CN203035082U Underground plate valve type pulser |
| 07/03/2013 | CN203035081U 多功能旋挖钻机 Multifunctional Rotary Drilling Rig |
| 07/03/2013 | CN203035080U Structure for preventing hole collapse of pebble layer drilling holes |
| 07/03/2013 | CN203035079U Clay small-duct drilling machine |
| 07/03/2013 | CN203035074U Universal rotary drilling machine |
| 07/03/2013 | CN103184832A Whipstock for large casing |
| 07/03/2013 | CN102199991B Drilling-fixing integrated device and method for yolk coal terrane |
| 07/02/2013 | US8474552 Piston devices and methods of use |
| 07/02/2013 | US8474540 Riser section connector with flanges, internal locking ring and external locking collar |
| 07/02/2013 | US8474536 Method and alignment system for killing an uncontrolled oil-gas fountain at an offshore oil platform using a telescopic rod assembly |
| 07/02/2013 | CA2713453C Method and device for creating a deep borehole |
| 07/02/2013 | CA2646563C Tubing anchor |
| 07/02/2013 | CA2624975C Remotely controlled decoking tool used in coke cutting operations |
| 07/02/2013 | CA2552793C Earth drilling rig having electronically controlled air compressor |
| 07/02/2013 | CA2527385C Directional drill head |
| 06/28/2013 | CA2799332A1 Apparatuses and methods for determining wellbore influx condition using qualitative indications |
| 06/27/2013 | WO2013096437A1 Offshore well drilling system with nested drilling risers |
| 06/27/2013 | WO2013096378A2 System and method of fracturing while drilling |
| 06/27/2013 | WO2013096361A2 Inflatable packer element for use with a drill bit sub |
| 06/27/2013 | WO2013095974A2 System and method for surface steerable drilling |
| 06/27/2013 | WO2013095939A1 Method and control devices for production of consistent water quality from membrane-based water treatment for use in improved hydrocarbon recovery operations |
| 06/27/2013 | WO2013095399A1 Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill |
| 06/27/2013 | WO2013090977A1 A delivery method and system |
| 06/27/2013 | WO2013035038A3 Drilling arrangement and clamping arrangement therefor |
| 06/27/2013 | WO2012166677A3 A method of conditioning a wall of a bore section |
| 06/27/2013 | US20130161101 System and Method of Fracturing While Drilling |
| 06/27/2013 | US20130161100 Inflatable packer element for use with a drill bit sub |
| 06/27/2013 | US20130161099 Downhole Cutting Tool |
| 06/27/2013 | US20130161097 System and method for surface steerable drilling |
| 06/27/2013 | US20130161096 System and method for determining incremental progression between survey points while drilling |
| 06/27/2013 | CA2848720A1 Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill |
| 06/26/2013 | EP2606197A1 Centraliser |
| 06/26/2013 | CN203022628U Mining hydraulic-power continuous hole forming operation device |
| 06/26/2013 | CN203022627U Percussion drill suitable for construction under complicated conditions of sea areas |
| 06/26/2013 | CN203022626U Reducing stabilizer and system thereof |
| 06/26/2013 | CN203022625U Full-hydraulic rock drilling excavator produced by means of hydraulic excavator |
| 06/26/2013 | CN203022624U Train translation device guide rail base |
| 06/26/2013 | CN203022623U Efficient and portable gasoline glacier drill |
| 06/26/2013 | CN103174791A Drilling column shock excitation anti-drag tool |
| 06/26/2013 | CN103174425A Method suitable for preventing rock burst of hard huge thick top plate |
| 06/26/2013 | CN103174383A Drill boom of drill loader |
| 06/26/2013 | CN103174382A Multifunctional hydraulic anchor rod drill carriage |
| 06/26/2013 | CN103174381A Rotary excavating drilling machine |
| 06/26/2013 | CN102022079B Outburst-prevention drilling machine on mining surface of gassy outburst coal mine and frequency conversion variable liquid-supplying self-walking pump station thereof |
| 06/26/2013 | CN101839112B Adjusting device of frame pillar drilling machine |
| 06/25/2013 | US8469119 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 06/25/2013 | US8469118 Drilling fluid containing carbon nanotubes |
| 06/25/2013 | US8469117 Drill bits and methods of drilling curved boreholes |
| 06/25/2013 | US8469116 Control system for mud cleaning apparatus |
| 06/25/2013 | US8469102 Subsea wellhead keyless anti-rotation device |
| 06/25/2013 | US8469096 Whipstock |
| 06/20/2013 | WO2013090488A1 Wave stimulation |
| 06/20/2013 | WO2012129506A3 Managed pressure drilling withrig heave compensation |
| 06/20/2013 | WO2012095472A3 Method and system for radially expanding a tubular element and directional drilling |
| 06/20/2013 | US20130153301 Lubrication system for a drilling apparatus |
| 06/20/2013 | US20130153300 Selectively actuating expandable reamers and related methods |
| 06/20/2013 | US20130153298 Method and apparatus for enhancing cell-edge user performance and signaling radio link failure conditions via downlink cooperative component carriers |
| 06/20/2013 | US20130153297 Adjustable Bent Drilling Tool Having in situ Drilling Direction Change Capability |
| 06/20/2013 | US20130153296 Systems and Methods to Inhibit Packoff Formation During Drilling Assembly Removal from a Wellbore |
| 06/20/2013 | US20130153240 Offshore Well Drilling System With Nested Drilling Risers |
| 06/19/2013 | CN203008783U Underground control device for offshore drilling |
| 06/19/2013 | CN203008782U Device for analyzing and displaying drilling parameters of drill truck |
| 06/19/2013 | CN203008781U Combined lifting drill truck |
| 06/19/2013 | CN203008780U Belt-striding shifting device of hydraulic drilling rig |
| 06/19/2013 | CN203008779U Moving type roof expansion bolt punching device |
| 06/19/2013 | CN203008778U Crawler-type full hydraulic underground drill rig |
| 06/19/2013 | CN203008777U Ground source heat pump deep hole drill |
| 06/19/2013 | CN203007745U Lateral movement guide rail of oil rig |
| 06/19/2013 | CN203006857U Hinged multifunctional operation machine |
| 06/19/2013 | CN103161405A Sleeve tube isolating layer shuttered zone method of down hole detecting and placing high pressure karst water drilling construction for mine |
| 06/19/2013 | CN103161404A Oriented drilling method and device by means of embedding of multi-group sensors |