| Patents for E21B 28 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (888) |
|---|
| 12/29/2004 | WO2004113668A1 Sonic heads and assemblies and uses thereof |
| 12/29/2004 | CA2528480A1 Sonic heads and assemblies and uses thereof |
| 12/28/2004 | CA2287123C Enhancing well production using sonic energy |
| 12/16/2004 | WO2004053434B1 System for radially expanding tubular members |
| 12/14/2004 | US6829947 Acoustic Doppler downhole fluid flow measurement |
| 12/14/2004 | CA2278024C Process for stimulation of oil wells |
| 11/09/2004 | US6814141 Method for improving oil recovery by delivering vibrational energy in a well fracture |
| 10/27/2004 | CN2651420Y Movable eccentric hydraulic acoustic wave generator |
| 08/26/2004 | WO2004053434A3 System for radially expanding tubular members |
| 08/25/2004 | EP1448867A2 Thermoacoustic electric power generation |
| 07/29/2004 | WO2004063524A1 Method and device for intensifying the permeability of ground layers close to bore holes and filter bodies and filter layers in wells and other production wells |
| 07/29/2004 | DE10301338B3 Increasing permeability of productive strata and filter layers close to well borehole, inserts generator superimposing pressure pulses on production flow |
| 07/27/2004 | US6768214 Vibration based power generator |
| 07/22/2004 | WO2003071245A3 Pressure reading tool |
| 07/22/2004 | US20040140097 Pressure reading tool |
| 07/15/2004 | WO2004024309A3 System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 07/01/2004 | WO2004055324A1 Acoustical well radiator |
| 06/24/2004 | WO2004053434A2 System for radially expanding tubular members |
| 06/09/2004 | CN1502786A Asymmetrical downhole strong vibration tool |
| 05/26/2004 | CN1500131A Integrated bitumen prodn. and gas conversion |
| 05/18/2004 | US6736209 Method for vibrational impact on a pipe string in a borehole and devices for carrying out said method |
| 05/13/2004 | WO2004040146A1 Well jet device operating method associated with hydrodynamic action performed on a well bore zone |
| 04/27/2004 | US6725923 Method and device for exciting transversal oscillations of a pipe string in a borehole |
| 03/30/2004 | CA2315783C A method to increase the oil production from an oil reservoir |
| 03/25/2004 | WO2004024309A2 System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 03/25/2004 | US20040055744 Method and apparatus to vibrate a downhole component |
| 03/18/2004 | US20040050551 Fracturing different levels within a completion interval of a well |
| 03/16/2004 | US6705396 Method and apparatus for producing fluid cavitation |
| 02/25/2004 | CN1139717C Vibrating oil-extracting device for oil pumping well |
| 02/17/2004 | US6691802 Internal power source for downhole detection system |
| 02/17/2004 | US6691778 Methods of performing downhole operations using orbital vibrator energy sources |
| 02/11/2004 | EP1387875A2 Integrated bitumen production and gas conversion |
| 01/28/2004 | CN1136378C Fluid-dynamic sound-wave wax preventor |
| 01/27/2004 | US6681857 Decomposing in situ a pentaethylenehexamine-3co complex, thereby generating heat and carbon dioxide; enhanced oil recovery |
| 01/22/2004 | US20040011522 Device for perfoming hydrodynamic action on wellbore walls |
| 01/13/2004 | US6675914 Pressure reading tool |
| 01/08/2004 | US20040003658 Acoustic doppler downhole fluid flow measurement |
| 12/31/2003 | CN1464172A A matching process for improving transmission efficiency of ultrasonic oil-increasing transmission cable |
| 11/27/2003 | WO2003097997A1 Acoustic doppler downhole fluid flow measurement |
| 11/27/2003 | CA2485974A1 Acoustic doppler downhole fluid flow measurement |
| 11/19/2003 | EP0981679B1 Process for stimulation of oil wells |
| 11/19/2003 | CN1457382A Fracturing different levels within completion interval of well |
| 11/13/2003 | WO2003093640A1 Method and device for producing wave action on a production stratum |
| 11/11/2003 | US6644406 Fracturing different levels within a completion interval of a well |
| 10/30/2003 | US20030201101 Method and apparatus for seismic stimulation of fluid-bearing formations |
| 10/23/2003 | WO2003046333A3 Thermoacoustic electric power generation |
| 10/23/2003 | US20030196816 Method for reduction of scale during oil and gas production and apparatus for practicing same |
| 10/08/2003 | EP1350309A2 Internal power source for downhole detection system |
| 10/08/2003 | EP1350006A1 Method and apparatus for treating a wellbore with vibratory waves to remove particles therefrom |
| 09/16/2003 | US6619394 Method and apparatus for treating a wellbore with vibratory waves to remove particles therefrom |
| 09/11/2003 | US20030168212 Method for vibrational impact on a pipe string in a borehole and devices for carrying out said method |
| 09/02/2003 | CA2290096C Heavy oil viscosity reduction and production |
| 08/28/2003 | WO2003071245A2 Pressure reading tool |
| 08/21/2003 | US20030155153 Pressure reading tool |
| 08/20/2003 | EP1336028A1 Transducer receiving voltage inputs rich in harmonics, such as square waves |
| 08/07/2003 | WO2003064813A1 Apparatus and method for expanding tubular members |
| 07/30/2003 | CN1116494C Oil exploiting and unblocking method using well head-formed low frequency sound wave |
| 07/24/2003 | WO2002057589A3 Internal power source for downhole detection system |
| 07/23/2003 | EP1257725A4 Coupled electromagnetic and acoustic stimulation of crude oil reservoirs |
| 06/25/2003 | EP0819207B1 Method for improved water well production |
| 06/25/2003 | CN1112503C Method for recovering gas using ultrasonic water draining |
| 06/05/2003 | WO2003046333A2 Thermoacoustic electric power generation |
| 06/03/2003 | US6571870 Method and apparatus to vibrate a downhole component |
| 05/22/2003 | WO2002077124A3 Integrated bitumen production and gas conversion |
| 05/20/2003 | US6564874 Technique for facilitating the pumping of fluids by lowering fluid viscosity |
| 05/02/2003 | EP1305503A1 Fracturing different levels within a completion interval of a well |
| 05/01/2003 | WO2002046572A9 Method and apparatus for treating a wellbore with vibratory waves to remove particles therefrom |
| 05/01/2003 | WO2002038914A9 System and method for signalling downhole conditions to surface |
| 04/22/2003 | US6550536 Downhole coiled tubing recovery apparatus |
| 04/22/2003 | US6550534 Utilization of energy from flowing fluids |
| 03/20/2003 | WO2003023183A1 Device for acoustical stimulation on a bottom-hole area of productive formations |
| 03/19/2003 | CN1403682A Vibrating oil exploiter for oil pumping well |
| 03/11/2003 | US6531516 Integrated bitumen production and gas conversion |
| 03/06/2003 | US20030042018 Method for improving oil recovery by delivering vibrational energy in a well fracture |
| 02/19/2003 | CN1398321A Method for wave processing mainly productive strata |
| 02/13/2003 | WO2003012249A1 Device for the acoustic action on a oil and gas-bearing formation |
| 02/05/2003 | CN2534359Y Stratigraphic multi-grade hydraulic hypocenter apparatus |
| 01/16/2003 | US20030010501 Technique for facilitating the pumping of fluids by lowering fluid viscosity |
| 01/07/2003 | US6504258 Vibration based downhole power generator |
| 12/31/2002 | US6499536 Method to increase the oil production from an oil reservoir |
| 12/26/2002 | US20020195246 Enhancement of flow rates through porous media |
| 12/17/2002 | US6496448 Transducer receiving voltage inputs, such as square waves, rich in harmonics |
| 12/11/2002 | CN1095921C Disblockage injector capable of reducing stratum and injection parts clogging |
| 12/05/2002 | WO2002097238A1 Pulsed method for processing the bottomhole zone of a formation |
| 11/28/2002 | WO2002057589A9 Internal power source for downhole detection system |
| 11/26/2002 | US6486828 Adaptive array antenna nulling |
| 11/21/2002 | US20020170846 Integrated bitumen production and gas conversion |
| 11/20/2002 | EP1257725A1 Coupled electromagnetic and acoustic stimulation of crude oil reservoirs |
| 11/07/2002 | WO2002038914A3 System and method for signalling downhole conditions to surface |
| 11/06/2002 | CN1378615A Method and apparatus for seismic stimulation of fluid-bearing formations |
| 10/31/2002 | US20020157871 Apparatus and method of oscillating a drill string |
| 10/23/2002 | EP1250512A1 Vibration based downhole power generator |
| 10/22/2002 | US6467542 Method for resonant vibration stimulation of fluid-bearing formations |
| 10/17/2002 | US20020148648 Internal power source for downhole detection system |
| 10/15/2002 | US6464014 Downhole coiled tubing recovery apparatus |
| 10/10/2002 | US20020144842 System and method for signalling downhole conditions to surface |
| 10/08/2002 | US6460618 Method and apparatus for improving the permeability in an earth formation utilizing shock waves |
| 10/03/2002 | WO2002077124A2 Integrated bitumen production and gas conversion |
| 10/03/2002 | US20020139531 Method of generating heat and vibration in a subterranean hydrocarbon-bearing formation |
| 09/11/2002 | EP1239112A2 Method and apparatus to vibrate a downhole component |