Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 15 - Supports for the drilling machine, e.g. derricks or masts
Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619)
04/2014
04/30/2014CN203570202U Crawler type tower-machine integrated core drill
04/30/2014CN103758464A Mining drill support
04/30/2014CN103758453A Intelligent micro drilling machine
04/30/2014CN102505690B Three-fulcrum anti-overturning protecting device for pile frame
04/30/2014CN102434111B Hydraulically-driven two-stage-feed dovetail-groove-guide symmetrically-arranged anchor rod drilling machine
04/24/2014WO2014063066A1 Fast moving drilling rig
04/23/2014CN203559914U Pneumatic anchor drilling machine provided with short landing leg and five levels of pushing cylinder barrels
04/23/2014CN203559792U Drill tower structure of drilling rig
04/23/2014CN203559773U Blasting mining drill wagon for thin seam
04/23/2014CN203559769U Hydraulic anchoring machine firm ground drill
04/23/2014CN103742072A Detachable combined sheave cathead for rotary drilling rig
04/23/2014CN102305068B Development machine
04/22/2014CA2547285C Coiled tubing drilling rig
04/17/2014WO2014057507A1 Drilling vessel
04/17/2014US20140102803 Derrick apparatus
04/16/2014CN203547739U Combined rock drilling unit
04/16/2014CN203547701U Rotary drilling machine and mast sitting control system of same
04/16/2014CN203547600U Orifice plate integrated structure and drill rig with orifice plate integrated structure
04/16/2014CN203547555U Drilling rig rack
04/16/2014CN203547554U Hydraulic mine drilling machine
04/16/2014CN203547553U Supporting seat of under-pressure operation machine
04/16/2014CN203547552U Folding drill floor
04/16/2014CN102720437B Protrusion self-positioning device for nested headframe
04/16/2014CN102654038B Cathead and rotary drilling rig
04/16/2014CN102493815B Drill loader working device
04/16/2014CN101666208B Gear rack lifting drilling machine
04/10/2014WO2013109453A3 Collapsible substructure for a mobile drilling rig
04/10/2014US20140097027 Self-locking top drive guide system
04/09/2014EP2715034A1 Drilling rig system with self-elevating drill floor
04/09/2014CN203531760U Pile frame
04/09/2014CN203531759U Three-section hydraulic telescopic headframe
04/09/2014CN203531758U Horizontal type adjustable machine frame used for installation of drilling machine equipment
04/09/2014CN103711437A Hoisting derrick specially for coiled tubing equipment
04/09/2014CN103711434A Mobile highway stand column horizontal drilling machine
04/09/2014CN103711432A Special mechanical rotary frame for tunnel engineering drilling rig
04/09/2014CN102678046B Mining drill carriage
04/09/2014CN102628337B Horizontal submarine polymetallic sulfide deposit area chimney sampling drill
04/09/2014CN102220840B Drill boom of multi-directional driller
04/08/2014CA2738337C Spar hull centerwell arrangement
04/03/2014WO2014048067A1 Hydraulic energy-storage petroleum drilling and repairing machine capable of tripping double joints or three-joint unit
04/03/2014US20140090333 Mast assembly with cylinder nested in substructure
04/02/2014CN203515341U Control system of the raising standard sequence of drilling or workover rig
04/02/2014CN203515340U Power head sliding rail of drilling machine
04/02/2014CN203515339U Underground drill rig capable of automatically returning drill
04/02/2014CN203515338U Underground drill rig with large-angle adjustable machine frame
04/02/2014CN203515337U Hydraulic underground drill rig support base
04/02/2014CN203515320U Efficient soil drilling machine
04/02/2014CN103696702A Rig mounting bracket
04/02/2014CN103696701A Slide lug, supporting frame, following frame and rotary drilling rig
04/02/2014CN103696700A Well drilling device for double-wellhead operation
04/02/2014CN102465666B Rotary drilling rig
04/01/2014US8689011 System and method for content protection
04/01/2014CA2827180A1 Rock drilling rig and method of positioning rock drilling unit
04/01/2014CA2811620A1 Mast assembly with cylinder nested in substructure
03/2014
03/26/2014CN203499600U Guide rail type adjustable centering disc for coal bed gas drilling machine
03/26/2014CN203499576U Telescopic transmission mechanism for track-type drill jambo
03/26/2014CN203499575U Hydraulic lifting derrick for petroleum drilling machine
03/26/2014CN203499574U Lifting system for petroleum drilling machine
03/26/2014CN203499573U Abrasion-resistant guide rail device for drill carriage
03/26/2014CN203499572U Power head guide rail device for heavy-duty drill carriage
03/26/2014CN203499571U Minimally invasive non-excavation drill rig fixing base
03/26/2014CN203499560U Drill carriage propeller assembly
03/26/2014CN203499559U Conveniently moved hydraulic anchoring drill for roadway
03/26/2014CN103670287A Shifting structure of power head of pile driver combining drilling function and pile pressing function
03/26/2014CN103670286A All-dimensional moving base seat for steel pylon composite foundation anchoring drill rig
03/26/2014CN103670273A Rotary drilling machine and tail support device thereof
03/26/2014CN102691404B Percussion drill support for overhead drilling construction
03/25/2014CA2703803C Land rig
03/19/2014CN203488204U Emergency safety cabin of oil drilling platform
03/19/2014CN203488109U Hydraulic lifting boring tower for directional construction
03/19/2014CN203488108U Mast control equipment for rotary drilling rig and engineering machine
03/19/2014CN203488107U Novel coalmine-production and shaft-sinking dual-purpose head frame
03/19/2014CN203488099U Hydraulic control rapid drilling machine
03/19/2014CN103643677A Tubular pile core taking-out machine
03/18/2014US8671626 Apparatus and method for a drilling rig assembly
03/17/2014CA2825930A1 Method and system for installing subsea well trees
03/12/2014CN203476220U Drilling machine movable base device
03/12/2014CN203476219U Pneumatic frame column type drilling machine without guide rails
03/12/2014CN203476218U Drilling machine stabilizing device
03/12/2014CN203476217U Rapid pitching mechanism for sliding frame and drill boom of down-the-hole drill
03/12/2014CN203476216U Rock drill and telescopic arm of same
03/12/2014CN203476215U Device for fixing truss of drill carriage
03/05/2014EP2702222A2 Offshore fluid transfer systems and methods
03/05/2014CN203463024U Drilling rig two-way posture regulating device
03/05/2014CN203463007U Adjustable-angle engineering geological drill machine
03/05/2014CN203463003U Semi-automatic lifting column drill
03/05/2014CN203460846U Oil field drilling machine and support leg leveling system thereof
03/05/2014CN103620153A A cantilever system and method of use
03/05/2014CN103615246A Combined drilling unit
03/05/2014CN103615198A Construction method for using parallel double-mast half-turning method to hoist large box type derrick
03/05/2014CN101680268B Method of quarrying dimensional stone, and line drilling apparatus
03/04/2014US8661743 Brace support mast assembly for a transportable rig
02/2014
02/26/2014CN203452660U Integral base of TA type drilling tower
02/26/2014CN203452659U Rotary drilling jig
02/26/2014CN203452658U Front-opening drilling rig derrick with double racking platforms for construction
02/26/2014CN203452657U Supporting arm, luffing mechanism and rotary drilling rig
02/26/2014CN203452656U Perforating device
02/26/2014CN203452655U Simple stop device for preventing collision of mini rotary drilling rig mast
02/26/2014CN203452642U Device for floor type rotating elevating telescoping drilling tool of piling machine
02/26/2014CN103603610A Light well drill derrick casing pipe straightening hydraulic lifting device
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 47