| Patents for E21B 3 - Rotary drilling (4,061) |
|---|
| 04/03/2013 | CN103015893A Non-excavation horizontal directional drilling machine |
| 04/03/2013 | CN103015888A Rotary table horizontal shaft self-lubricating device for petroleum drilling machine |
| 04/03/2013 | CN103015887A Drill power head base |
| 04/03/2013 | CN103015886A Top drive driver of rotating control head |
| 04/03/2013 | CN103015885A Pile machine loading rod |
| 04/03/2013 | CN103015884A Small-sized combustion engine power rock drill |
| 04/03/2013 | CN103015883A Rotary support and driven gear integrated power head |
| 04/03/2013 | CN103015882A Hub and key bush integrated power head |
| 04/03/2013 | CN102251518B Rotary pump perforating piling machine |
| 04/03/2013 | CN102003142B Screw anchor drilling machine |
| 04/02/2013 | CA2755628C Helical drilling apparatus, systems, and methods |
| 03/30/2013 | CA2791522A1 Extendable pilot bit for barrel cutter |
| 03/27/2013 | CN202839333U Touch switch induction mechanism of rotary drilling rig |
| 03/27/2013 | CN202833391U Top drive type drilling machine power head linear motion hydraulic control system |
| 03/27/2013 | CN202832474U Encoder mounting device and rotary drilling rig |
| 03/27/2013 | CN202832239U Rotary excavating drilling machine movable arm and rotary excavating drilling machine |
| 03/27/2013 | CN202832232U Amplitude variable oil cylinder device for rotary excavating and drilling rig |
| 03/27/2013 | CN202832231U Self-lubrication guide rail slide plate |
| 03/27/2013 | CN202832193U Hydraulic transmission drilling machine |
| 03/27/2013 | CN202832192U Dispreading device hydraulic converter of rotary drilling rig |
| 03/27/2013 | CN202832191U Rotary excavating drilling machine and slewing hydraulic system thereof |
| 03/27/2013 | CN202832190U Multifunctional power head of drilling machine |
| 03/27/2013 | CN202832189U Waist hole connecting device for connecting power supply box and carriage |
| 03/27/2013 | CN202832188U Pin hole connecting device for connecting power supply box and carriage |
| 03/27/2013 | CN202832187U Hydraulic breaker type rotary drilling rig |
| 03/27/2013 | CN202832186U Auto-oscillation type hydraulic two-channel reverse circulation power head |
| 03/27/2013 | CN202832185U Rotating excavation drill for forming rocket shaft of drill cast-in-place pile |
| 03/27/2013 | CN102996072A Multifunctional cutting drilling machine |
| 03/27/2013 | CN102996068A Drilling machine power head |
| 03/27/2013 | CN102996067A Hanging ring adapter with oppositely-opened top drive |
| 03/27/2013 | CN102996066A Rotary-drill power head and rotary-drill mechanical equipment |
| 03/27/2013 | CN102996065A Rotary drilling rig with circular tube type extension-type travelling chassis |
| 03/27/2013 | CN102995689A Pond digging tool for telegraph poles |
| 03/27/2013 | CN102337845B Protection method for rotary drilling rig, controller, protection device and rotary drilling rig |
| 03/27/2013 | CN101512099B A top drive apparatus for drilling a bore hole |
| 03/21/2013 | WO2013037110A1 Protecting method and controller for rotary drilling rig, protecting system and rotary drilling rig |
| 03/21/2013 | US20130068494 Power Structure of a Hydraulic Tool |
| 03/21/2013 | US20130068490 Two pipe horizontal directional drilling system |
| 03/20/2013 | CN202810646U Drilling machine and forcing mechanism thereof |
| 03/20/2013 | CN202810645U Full-hydraulic emulsion drilling rig |
| 03/20/2013 | CN202809599U Forward-backward cement-soil mixing pile machine |
| 03/20/2013 | CN102979455A Horizontal hole drilling machine |
| 03/20/2013 | CN102979454A Reverse circulation drill for geological prospecting, and power head thereof |
| 03/20/2013 | CN102979453A Power head pressure plate and power head type drilling equipment with same |
| 03/20/2013 | CN102061892B Rotary drilling rig and drill rod assembly thereof |
| 03/20/2013 | CN102041965B Coal mine underground over-broken abnormal zone drilling method |
| 03/19/2013 | US8397835 Ice auger attachment for a vehicle |
| 03/14/2013 | US20130062125 Apparatus and Method for Lateral Well Drilling |
| 03/13/2013 | CN202788602U Power system of rotary drilling rig |
| 03/13/2013 | CN202788601U Drilling construction detection device |
| 03/13/2013 | CN202788600U Power head shock mitigation system and rotary drilling rig |
| 03/06/2013 | CN202767874U Intelligent type hydraulic pump station for roofbolter |
| 03/06/2013 | CN202767873U Guide rail type emulsified liquid hydraulic drilling rig for coal mine |
| 03/06/2013 | CN202767872U Hydraulic anchor drill of workover rig |
| 03/06/2013 | CN202767871U Round steel tube penetration type movable arm body |
| 03/06/2013 | CN102953677A Drilling machine using motors as main power |
| 03/06/2013 | CN102953676A Drill power system |
| 03/06/2013 | CN101881133B Rotary drilling rig and deep sounding apparatus thereof |
| 03/06/2013 | CN101832100B Piling machinery and sluice gate device thereof |
| 02/27/2013 | CN202755903U Valve opening drill with soil stopping mechanism |
| 02/27/2013 | CN202755887U Low-gravitational-center turnplate triaxial mixing drill |
| 02/27/2013 | CN202755886U Tunnel perforating machine |
| 02/27/2013 | CN102943631A Light multifunctional drilling rig |
| 02/27/2013 | CN102943618A 旋挖钻机 Rotary Drilling Rig |
| 02/27/2013 | CN102943617A Deep-hole geological prospecting drill |
| 02/26/2013 | US8381840 Method of protecting a top drive drilling assembly and a top drive drilling assembly modified in accordance with this method |
| 02/26/2013 | US8381834 Drive system for interconnecting attachment devices and handheld rotary power tools |
| 02/20/2013 | CN202745777U Small electric geological core drilling machine |
| 02/20/2013 | CN202745684U Central pipe for faucet of drilling and repairing machine |
| 02/20/2013 | CN202745683U Top drive drilling device with integrated hydraulic system |
| 02/20/2013 | CN101975023B Method and device for drilling deep and long gas drainage hole in soft coal seam along layers |
| 02/19/2013 | US8375832 Compact one touch pneumatic wrench |
| 02/19/2013 | CA2586914C Wellbore tubular handling torque multiplier |
| 02/14/2013 | DE102011052182B4 Vorrichtung zur Herstellung eines Erdlochs Apparatus for producing a earthen hole |
| 02/13/2013 | CN202736227U Rotary drilling rig and automatic safety warning device for revolution of rotary drilling rig |
| 02/13/2013 | CN202731792U Centering, guiding and clamping integrated power head |
| 02/13/2013 | CN202731744U Front arm type real-time random lifting load mode pit drilling machine |
| 02/13/2013 | CN202731740U Power head and drilling machine comprising same |
| 02/13/2013 | CN202731739U Drill rig power head easy to manufacture and dismount |
| 02/13/2013 | CN102926737A Rotation control method, device and system for rotary drilling dig power head, and rotary drilling dig |
| 02/13/2013 | CN102926688A Reverse-circulation drilling machine with double functions of pump lift and pump suction |
| 02/13/2013 | CN102926655A Control method and control device of rotary drilling rig, and rotary drilling rig |
| 02/13/2013 | CN102926654A Pile hole annular cutting system and pile hole annular cutting method |
| 02/13/2013 | CN102926653A Power head of drilling rig |
| 02/13/2013 | CN102926652A Novel rotary drilling rig |
| 02/13/2013 | CN102022083B Rotary guide well drilling tool |
| 02/13/2013 | CN101796259B Spring load seal assembly and well drilling equipment comprising same |
| 02/06/2013 | CN202718621U Anti-falling device for unit head of rotary drilling rig |
| 02/06/2013 | CN102913124A Locking device of box-opening type power head |
| 02/06/2013 | CN102913123A Wedge key bar for power head and power head |
| 02/06/2013 | CN102913122A Rotary drilling rig under all-electric pilot control |
| 02/06/2013 | CN102910535A Rotary drilling rig and hoisting mechanism, controller and control method thereof |
| 01/31/2013 | WO2012121945A3 Methods of forming polycrystalline tables and polycrystalline elements and related structures |
| 01/31/2013 | US20130025942 Rotary drill |
| 01/31/2013 | DE102011052182A1 Vorrichtung zur Herstellung eines Erdlochs Apparatus for producing a earthen hole |
| 01/31/2013 | CA2842817A1 Device for producing a bore in the ground, rotary drive device and rotary seal arrangement |
| 01/30/2013 | CN202708073U Rotary body sealing device and rotary bit of horizontal directed drilling rig |
| 01/30/2013 | CN202706911U Double power fully hydraulic long auger drilling machine |
| 01/30/2013 | CN202706908U Top drive well drilling device for petroleum drilling machine |
| 01/30/2013 | CN202706907U Power head |