| Patents for E21B 28 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (888) |
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| 06/29/2011 | CN201883999U Novel turbine type downhole vibration cementing device |
| 06/29/2011 | CN102108846A Followed vibration well cementation method |
| 06/16/2011 | US20110139441 System, apparatus and method for stimulating wells and managing a natural resource reservoir |
| 06/16/2011 | US20110139440 Method and apparatus for stimulating wells |
| 06/08/2011 | CN201857914U Barrel type jar for wireline operation |
| 06/02/2011 | US20110127031 System and method for increasing production capacity of oil, gas and water wells |
| 06/01/2011 | CN201851055U Double-ejection wax-resistant and viscosity-break oil enhancing device |
| 05/19/2011 | US20110114321 Open/Close Outlet Internal Hydraulic Device |
| 05/12/2011 | US20110108277 Formation Treatment Using Electromagnetic Radiation |
| 04/28/2011 | US20110094732 Vibrating system and method for use in sand control and formation stimulation in oil and gas recovery operations |
| 04/27/2011 | CN201810243U Improved sound wave natural vibration oil replenishing device |
| 04/26/2011 | CA2616575C Oil recovery enhancement method |
| 04/13/2011 | CN1936266B Oil-well low-frequency acoustic vibration unblocking and yield-increasing apparatus and method |
| 04/13/2011 | CN102016227A Producing resources using heated fluid injection |
| 03/30/2011 | CN201778710U High-power ultrasonic oil formation treatment system |
| 03/30/2011 | CN101994495A Electromagnetic drive underground high-power resonant wave displacement device and method |
| 03/24/2011 | WO2011032874A1 Resonance enhanced rotary drilling |
| 03/24/2011 | CA2774323A1 Resonance enhanced rotary drilling |
| 03/22/2011 | US7909094 Oscillating fluid flow in a wellbore |
| 02/22/2011 | CA2468136C Thermoacoustic electric power generation |
| 02/17/2011 | US20110036560 Long-lasting hydraulic seals for smart shuttles, for coiled tubing injectors, and for pipeline pigs |
| 02/16/2011 | CN201747310U Automatic vibration source of oil well |
| 02/16/2011 | CN101975053A Hydraulic power pulse oil displacement experimental facility and experimental method thereof |
| 02/15/2011 | CA2372355C Method and apparatus to vibrate a downhole component |
| 01/20/2011 | US20110011592 Pulse fracturing device and method |
| 01/20/2011 | US20110011576 Acoustic generator and associated methods and well systems |
| 12/29/2010 | WO2010151170A1 Device for producing an electrohydraulic effect on a well bottom-hole zone |
| 12/29/2010 | WO2010126395A3 Method and assembly for recovering oil using elastic vibration energy |
| 12/23/2010 | WO2010125405A3 Method and apparatus for applying vibrations during borehole operations |
| 12/21/2010 | CA2498742C System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 12/16/2010 | WO2010099465A3 Downhole vibration apparatus and method |
| 12/15/2010 | CN1934331B Method for intensification of high-viscosity oil production and apparatus for its implementation |
| 12/02/2010 | US20100300681 Methods and apparatus for enhanced oil recovery |
| 11/24/2010 | CN201650178U Microwave hydrate dredging apparatus for gas wells |
| 11/23/2010 | US7836948 Flow hydraulic amplification for a pulsing, fracturing, and drilling (PFD) device |
| 11/18/2010 | US20100290312 Time-Variable Gain for Correction of Fluid Attenuation in Downhole Acoustic Tools |
| 11/04/2010 | CA2760262A1 Method and apparatus for applying vibrations during borehole operations |
| 11/02/2010 | US7823638 Sound source for stimulation of oil reservoirs |
| 10/27/2010 | CN201614905U 防洗井污染振动采油装置 Anti-vibration oil pollution flushing device |
| 10/07/2010 | WO2010114415A1 Method for performing an electrohydraulic action on an oil formation and a device for carrying out said method |
| 10/06/2010 | CN201599018U 多功能增油装置 Multifunction devices increasing oil |
| 09/22/2010 | CN101839116A Underground ultrasonic oil-production transducer with matching device |
| 09/02/2010 | CA2753595A1 Downhole vibration apparatus and method |
| 08/26/2010 | US20100212901 Downhole vibration apparatus and methods |
| 08/26/2010 | US20100212900 Running and Cement Tubing |
| 08/10/2010 | US7770638 Method for completion, maintenance and stimulation of oil and gas wells |
| 07/28/2010 | CN101787862A Blockage removal method and device for microwave hydrate for gas well |
| 07/06/2010 | US7748446 Seismic source and method of generating a seismic wave in a formation |
| 07/01/2010 | US20100163227 Stimulation and recovery of heavy hydrocarbon fluids |
| 06/24/2010 | US20100155058 Apparatus and method for monitoring a fracturing operation |
| 06/17/2010 | US20100147519 Mitigating perforating gun shock |
| 06/10/2010 | US20100139912 Drill String Suspension |
| 06/03/2010 | US20100132937 Laminar Flow Tool |
| 05/27/2010 | US20100126721 Subterranean water production, transfer and injection method and apparatus |
| 05/26/2010 | EP2189623A2 Generation of a pressure pulse of known magnitude |
| 05/20/2010 | US20100122809 Rotating high-pressure pumping head |
| 05/19/2010 | CN101033684B Mechanical plug-removal oil extraction device |
| 05/12/2010 | CN201460783U Pressure wave generating device for vibration cementing |
| 05/12/2010 | CN201460782U Incremental oil device |
| 04/21/2010 | EP2176516A2 Producing resources using heated fluid injection |
| 03/25/2010 | WO2009150402A3 Method of enhancing treatment fluid placement in shale, clay, and/or coal bed formations |
| 03/09/2010 | CA2472347C Apparatus and method for expanding tubular members |
| 02/23/2010 | US7665517 Methods of cleaning sand control screens and gravel packs |
| 02/19/2010 | CA2675819A1 Method for completion, maintenance and stimulation of oil and gas wells |
| 01/27/2010 | CN100585123C Mixed-gas water exciting sound wave unplugging device |
| 01/21/2010 | WO2009081088A3 Methods for introducing pulsing to cementing operations |
| 01/12/2010 | US7644759 Enhancement of flow rates through porous media |
| 12/08/2009 | US7628202 Enhanced oil recovery using multiple sonic sources |
| 11/25/2009 | CN201351469Y Magnetic resonance block stopping and oil increasing device for oil wells |
| 10/21/2009 | CN101560876A Multifunctional processor for liquid generated underground |
| 10/20/2009 | CA2398097C Vibration based downhole power generator |
| 10/06/2009 | US7597148 Formation and control of gas hydrates |
| 09/09/2009 | CN101525983A Oil extraction reinforcing method |
| 09/03/2009 | US20090218100 Wellbore cleaning |
| 09/01/2009 | CA2618848C Pulse width modulated downhole flow control |
| 08/25/2009 | US7578968 Effecting biocidal activity in aqueous well fluid by blending with the fluid a biocidally-effective amount of a sulfamate stabilized, bromine-based biocide formed from a halogen source which is bromine chloride, bromine and chlorine, a source of sulfamate anions, alkali metal base, and water |
| 08/18/2009 | US7575051 Downhole vibratory tool |
| 08/13/2009 | US20090200019 System and method for enhanced oil recovery using an in-situ seismic energy generator |
| 08/13/2009 | US20090200018 Systems and methods for producing oil and/or gas |
| 08/13/2009 | US20090200017 Method and device for treating bottom-hole zones of oil-and-gas-bearing formations |
| 08/11/2009 | CA2342406C Utilization of energy from flowing fluids |
| 07/23/2009 | WO2009090372A1 Method of consolidating an underground formation |
| 07/22/2009 | CN201276998Y Shock-absorption jar |
| 07/08/2009 | CN201269061Y Chain type bumper jar used for steel wire operation |
| 07/02/2009 | US20090166045 Harvesting vibration for downhole power generation |
| 06/03/2009 | CN201250629Y Downhole hydraulic self-excited vibration pulse generator |
| 06/03/2009 | CN201250628Y Downhole hydraulic machine vibration pulse generator |
| 05/22/2009 | WO2009063162A2 Method for stimulating a well using fluid pressure waves |
| 05/12/2009 | CA2386459C Method for improving oil recovery by delivering vibrational energy in a well fracture |
| 04/05/2009 | CA2817943A1 Hydraulic actuated pump system |
| 04/05/2009 | CA2640465A1 Hydraulic actuated pump system |
| 03/25/2009 | CN100472172C Method and system for monitoring fluid flow |
| 03/11/2009 | CN201206447Y Energy converter of high energy-gathering high-power electrical pulse device |
| 02/19/2009 | WO2009022935A1 Device for low-frequency acoustic effect on perforation area and oil- bearing bed in bottom-hole zone |
| 02/17/2009 | CA2406794C Methods for improving oil production |
| 02/05/2009 | US20090033176 System and method for long term power in well applications |
| 02/03/2009 | US7484566 Pulse width modulated downhole flow control |
| 01/28/2009 | CN201187288Y Multifunctional downhole liquid-producing processor |
| 01/20/2009 | US7478673 Frac head including a mixing chamber |
| 01/15/2009 | WO2009009412A2 Producing resources using heated fluid injection |