| Patents for E21B 28 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (888) |
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| 12/03/2013 | US8596349 Pulse fracturing device and method |
| 11/28/2013 | WO2013092712A3 Method for recovery of hydrocarbon fluid |
| 11/28/2013 | WO2013092710A3 Method and system for impact pressure generation |
| 11/20/2013 | CN203296733U Drilling tool capable of generating axial impact vibration |
| 11/20/2013 | CN203296732U Well drilling tool capable of producing axial impact vibration |
| 11/06/2013 | CN103382828A Two-dimensional hydraulic vibrator used for petroleum drilling |
| 10/31/2013 | WO2013162956A2 Methods and devices for casing and cementing a wellbore |
| 10/30/2013 | CN203257357U Ground electrode of high energy-gathered electric detonation device |
| 10/23/2013 | CN203248139U Oil layer heating resonance vapor generator |
| 10/23/2013 | CN203248063U Audio-frequency vibration power head and tractor drilling machine comprising same |
| 10/23/2013 | CN103362467A Inline type eccentric wheel vibration mechanism |
| 10/23/2013 | CN102287137B Self-excitation sympathetic vibration well drilling device and method thereof |
| 10/23/2013 | CN101975053B Hydraulic power pulse oil displacement experimental facility and experimental method thereof |
| 10/17/2013 | WO2013154449A1 Set of equipment for extracting highly viscous oil |
| 10/16/2013 | EP2649265A2 Resonance enhanced rotary drilling module |
| 10/16/2013 | CN103352672A Turbine vibration drag reduction device for penetrating cable during coiled tubing well drilling |
| 10/15/2013 | US8555965 High frequency surface treatment methods and apparatus to extend downhole tool survivability |
| 10/10/2013 | WO2013151940A1 A vibratory drilling system and tool for use in downhole drilling operations and method for manufacturing same |
| 10/10/2013 | WO2012158575A3 Vortex controlled variable flow resistance device and related tools and methods |
| 09/18/2013 | CN103306624A Underground fluid resonant energy accumulation and vibration deblocking device and deblocking method thereof |
| 09/17/2013 | US8534353 Hydraulic actuated pump system |
| 09/17/2013 | US8534352 Methods and apparatus for enhanced oil recovery |
| 09/04/2013 | CN203175444U Resonator used for underground steam heating of oil layer in oil well |
| 09/04/2013 | CN203175443U Underground dual-wave low-frequency large-power hydraulic vibrator |
| 08/29/2013 | US20130220598 System for Extracting Hydrocarbons From Underground Geological Formations and Methods Thereof |
| 08/21/2013 | CN103256016A Automatic wire-feeding device for underground electric pulse work and automatic wire feeding method of same |
| 08/07/2013 | CN203114247U Strong magnetic rotational flow self-generating electricity vacuum superconducting four-effect paraffin control and viscosity reduction device |
| 07/24/2013 | CN203081412U Device capable of increasing coal seam permeability |
| 07/18/2013 | WO2013104069A1 Fluid or slurry pulsing casing/liner shoe |
| 07/18/2013 | WO2013030681A3 Wave-inducing device, casing system and method for cementing a casing in a borehole |
| 07/10/2013 | CN103195386A Downhole double-wave low-frequency high-power hydraulic vibrator |
| 07/03/2013 | CN203035142U Downhole plug-valve-type impulsator |
| 07/03/2013 | CN203035141U Downhole impeller-type impulsator |
| 07/03/2013 | CN203035140U Underground fluidic type pulser |
| 06/27/2013 | WO2013092804A1 Stimulation method |
| 06/27/2013 | WO2013092803A1 Stimulation method |
| 06/27/2013 | WO2013092798A1 Stimulation method |
| 06/27/2013 | WO2013092712A2 Method for recovery of hydrocarbon fluid |
| 06/27/2013 | WO2013092710A2 Method and system for impact pressure generation |
| 06/27/2013 | CA2858477A1 Stimulation method |
| 06/27/2013 | CA2858473A1 Stimulation method |
| 06/27/2013 | CA2858468A1 Stimulation method |
| 06/27/2013 | CA2858179A1 Method for recovery of hydrocarbon fluid |
| 06/26/2013 | EP2607609A1 Stimulation method |
| 06/26/2013 | EP2607608A1 Stimulation method |
| 06/26/2013 | EP2607607A1 Stimulation method |
| 06/20/2013 | WO2013090488A1 Wave stimulation |
| 06/20/2013 | WO2012089996A3 Conical fluidic oscillator inserts for use with a subterranean well |
| 06/20/2013 | WO2012089995A3 Cone and plate fluidic oscillator inserts for use with a subterranean well |
| 06/20/2013 | WO2012089994A3 Cross-flow fluidic oscillators for use with a subterranean well |
| 06/13/2013 | WO2013086278A2 Method and acidizing tool for deep acid stimulation using ultrasound |
| 06/13/2013 | WO2012089993A3 Fluidic oscillators for use with a subterranean well |
| 06/13/2013 | US20130146281 Method and Acidizing Tool for Deep Acid Stimulation Using Ultrasound |
| 06/13/2013 | CA2858088A1 Method and acidizing tool for deep acid stimulation using ultrasound |
| 06/12/2013 | CN202990896U Vibration-while-drilling drill rod |
| 06/12/2013 | CN103147710A Shaking and blockage removing device for pulverized coal at bottom of coal-bed gas well |
| 06/12/2013 | CN102568747B Donwhole ultrasonic matching inductor and operation and construction system thereof |
| 06/11/2013 | US8459351 Method and apparatus for producing shock waves in the borehole of wells filled by liquid |
| 06/05/2013 | CN103140649A Method for treating a productive formation and borehole equipment for the implementation of same |
| 06/05/2013 | CN103132940A Downhole spiral flow shear vibration generator device |
| 05/29/2013 | CN102191915B Resonant pulse vibrating drilling device |
| 05/16/2013 | WO2013071018A1 Downhole dynamics measurements using rotating navigation sensors |
| 05/16/2013 | CA2855292A1 Downhole dynamics measurements using rotating navigation sensors |
| 05/08/2013 | CN202926271U Hydraulic type under well resistance reducing and adhesion proofing vibrator |
| 05/02/2013 | DE10361983B4 Verfahren und Vorrichtung zur Intensivierung der Durchlässigkeit von bohrungsnahen Bodenschichten sowie von Filterkörpern und Filterschichten in Brunnen und anderen Förderbohrungen Method and apparatus for intensifying the permeability of hole near the bottom layers and of filter bodies and filter layers in wells and other production wells |
| 04/25/2013 | WO2013028310A3 Subterranean vibrator with lateral vibration feature |
| 04/24/2013 | EP2582907A1 Method employing pressure transients in hydrocarbon recovery operations |
| 04/24/2013 | CN202900224U Oil extraction device |
| 04/24/2013 | CN202900223U Underground low-frequency acoustic wave oil layer processing system |
| 04/17/2013 | CN202882824U Axial vibration drag reduction tool |
| 04/10/2013 | CN102305021B Experimental method for simulating dynamic mechanics characteristic of underground drilling rig of air well drilling |
| 04/04/2013 | US20130081818 Method employing pressure transients in hydrocarbon recovery operations |
| 04/03/2013 | CN202850942U Well cementing device capable of vibrating in multi-direction |
| 04/03/2013 | CN202850913U Turbo-type down-hole vibration cementing device |
| 04/03/2013 | CN102108846B Followed vibration well cementation method |
| 03/28/2013 | US20130075086 Using microseismic activity to facilitate hydrocarbon production in tight sand and shale reservoirs |
| 03/27/2013 | CN202832333U Downhole repeated vibratory device for oil gas drilling |
| 03/13/2013 | CN202788706U Paraffin-control viscosity-break acoustic vibrator |
| 03/13/2013 | CN102971483A Method employing pressure transients in hydrocarbon recovery operations |
| 03/07/2013 | WO2013032456A1 Perforating gun with internal shock mitigation |
| 03/07/2013 | WO2013030681A2 Wave-inducing device, casing system and method for cementing a casing in a borehole |
| 03/07/2013 | WO2011150223A3 Method and apparatus for maintaining pressure in well cement during curing |
| 03/07/2013 | CA2846101A1 Wave-inducing device, casing system and method for cementing a casing in a borehole |
| 03/06/2013 | CN101994495B Electromagnetic drive underground high-power resonant wave displacement device and method |
| 02/28/2013 | WO2013028310A2 Subterranean vibrator with lateral vibration feature |
| 02/28/2013 | US20130048274 Variable frequency fluid oscillators for use with a subterranean well |
| 02/27/2013 | EP2562350A2 Downhole pulsing tool |
| 02/27/2013 | CN102943658A Oil extraction device |
| 02/27/2013 | CN102155253B Ground pumping and mining coal seam gas well reformation method based on recurrence frequency impact waves |
| 02/23/2013 | CA2787570A1 Pulsing tool |
| 02/21/2013 | US20130043022 Downhole pulse-generating apparatus |
| 02/21/2013 | US20130043021 Subterranean Vibrator with Lateral Vibration Feature |
| 02/20/2013 | CN202745863U Device for controlling transverse vibration of drill column during reaming along with drill |
| 02/20/2013 | CN202745822U Anti-top-impact tool string for underground wireline operation in highly-deviated well |
| 02/14/2013 | US20130037259 Acoustic generator and associated methods and well systems |
| 02/06/2013 | CN102913165A Well-drilling downhole turbine-drive while-drilling vibrator |
| 01/23/2013 | CN102889067A Well fixing device capable of being multi-directionally vibrated |
| 01/16/2013 | CN202673216U 大位移井振动工具 Reach Wells vibration tools |
| 01/15/2013 | CA2566653C Downhole ultrasonic well cleaning device |
| 01/08/2013 | US8347965 Apparatus and method for creating pressure pulses in a wellbore |