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| Number | Title | Issue Date |
| 7980301 | Method and apparatus for the dampening of shocks in the borehole of wells The method and apparatus for dampening of sudden shocks in the wells filled by liquid wherein the tubing pump is used in which on upstroke of pumping unit the damper plunger and tubing pump plunger are moving in concordance thereby compressing the liquid contained w... | 07/19/2011 |
| 7347284 | Apparatus and method for hard rock sidewall coring of a borehole The present invention is directed to an apparatus and method for coring a borehole in a hard rock sidewall of a well bore in a subterranean formation for testing purposes. The apparatus includes a drive motor for operation down hole, a flexible drive shaft coupled t... | 03/25/2008 |
| 7322431 | Advanced ultrasonic processor An ultrasonic processor for continuous processing of material is disclosed comprising an enclosed processor chamber (12) having opposed end wall (18) and (16) and an input (40) and an output (42) so that material to be processed ca... | 01/29/2008 |
| 7216706 | Annular isolators for tubulars in wellbores The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate... | 05/15/2007 |
| 7195069 | Method and apparatus for backing off a tubular member from a wellbore A back-off tool for use in a tubular member disposed inside a wellbore. The back-off tool includes a housing and at least one sonic wave generator mounted within the housing. The sonic wave generator is configured to generate a plurality of sonic waves. ... | 03/27/2007 |
| 7063144 | Acoustic well recovery method and device An electro acoustic device and related method for increasing the production capacity of wells that contains oil, gas and/or water is disclosed. The electro acoustic device is submerged in the well producing zone, and includes an electric generator, one or more elect... | 06/20/2006 |
| 7059403 | Electroacoustic method and device for stimulation of mass transfer processes for enhanced well recovery An electro acoustic device and related method increase production capacity of wells that contain oil, gas and/or water. The electro acoustic device produces vibrations stimulating occurrences of mass transfer processes within the well. The resultant acoustic flow ge... | 06/13/2006 |
| 6899175 | Method and apparatus for seismic stimulation of fluid-bearing formations An apparatus and seismic method for producing an shock wave in an oil well borehole, with a pumping unit arranged at the wellhead, a tubing string extending downward into the production casing of the well, a hollow cylinder assembly connected with the bottom of the ... | 05/31/2005 |
| 6814141 | Method for improving oil recovery by delivering vibrational energy in a well fracture This invention provides a method for improving oil recovery, preferably a high-viscosity oil relying on gravity drainage, by applying vibrational energy. A fracture is created at a wellbore and a fluid displacement device is inserted at or near the fracture opening.... | 11/09/2004 |
| 6496448 | Transducer receiving voltage inputs, such as square waves, rich in harmonics A transducer member is made from a piezoelectric material (e.g. barium titanium) having a looped configuration and a gap in the loop and having properties of vibrating upon the introduction of an electrical voltage to the transducer member. A support memb... | 12/17/2002 |
| 6467542 | Method for resonant vibration stimulation of fluid-bearing formations A process is provided to enhance fluid production, recovery, and/or injection from and/or into fluid-bearing formations. The process includes the stimulation of the formation by vibrations, generated by the vibration source installed in the vicinity of th... | 10/22/2002 |
| 6390191 | Method for stimulating hydrocarbon production A system for stimulating the production of hydrocarbon containing substances, such as from oil and gas wells, by the use of a generally cylindrical, high energy producing transducer mechanism. The transducer comprises a series of aligned transducer elemen... | 05/21/2002 |
| 6015010 | Dual tubing pump for stimulation of oil-bearing formations An apparatus for producing a shock wave in a borehole, such as a well, includes a pumping unit arranged at the wellhead, a tubing string extending downwardly into the production casing of the well, a hollow cylinder assembly connected with the bottom of t... | 01/18/2000 |
| 6012521 | Downhole pressure wave generator and method for use thereof A pressure wave generator for use down a bore hole having fluid therein adjacent a hydrocarbon-containing formation. The generator includes an elastomeric member sized for disposition in the bore hole. A periodic compressive force is exerted on the elasto... | 01/11/2000 |
| 5826653 | Phased array approach to retrieve gases, liquids, or solids from subaqueous geologic or man-made formations A method of enhancing the remediation of contaminated soils and ground water, production of oil and gas, and production of any solid, gas, and/or liquid from subsurface geologic and man-made formations including the steps of estimating the geometric bound... | 10/27/1998 |
| 5586602 | Method and apparatus for shock wave stimulation of an oil-bearing formation Disclosed is a method and apparatus for increasing the effectiveness of shock wave stimulation of oil-bearing formations by increasing the intensity of elastic oscillations in the oil accumulation. The device includes a pumping unit and a tubing string ru... | 12/24/1996 |
| 5460223 | Method and system for oil recovery A method and an apparatus for recovering oil from a oil bearing formation having a mixture of oil and water. A first borehole and a second borehole are formed in oil bearing .formation and extend in a horizontal direction. The first borehole is disposed b... | 10/24/1995 |
| 5396955 | Method to selectively affect permeability in a reservoir to control fluid flow A method for selectively affecting the permeability of reservoirs to enhance fluid flow therein includes placing a plurality of acoustical wave generator means in a patterned array with respect to the reservoir and energizing them to create acoustic nodes... | 03/14/1995 |
| 5351754 | Apparatus and method to cause fatigue failure of subterranean formations An improved sonic wave generating device and method transmits variable wave energy to a fluid medium that is transmitted to objects such as subsurface petroliforous formations to be treated. Reverberative pressures and wave energy are reduced by improveme... | 10/04/1994 |
| 5234056 | Sonic method and apparatus for freeing a stuck drill string A mechanical oscillator which employs unbalanced rotors is coupled to the top end of a drill string which has become stuck in a bore hole. The rotors are driven at a rotation speed such as to generate high level energy at a sonic frequency, this energy be... | 08/10/1993 |
| 5109922 | Ultrasonic energy producing device for an oil well An ultrasonic energy producing device for reducing the viscosity of oil in an oil well. The device includes: an electroacoustic transducer for converting an alternating electrical power signal at a selected voltage into acoustic energy, the transducer bei... | 05/05/1992 |
| 4945986 | Constant head pump for sonic wave generator used in treating subsurface formations A sonic wave generating device transmits variable wave energy to a fluid medium that is transmitted to objects such as subsurface petroliforous formations to be treated. A feed pump which pumps the medium to the devices includes means to maintain an incre... | 08/07/1990 |
| 4736794 | Method for the sonic cementing of down hole well casings A pipe string is suspended from the surface within a well casing installed in a well. The pipe string is centered within the casing and free from connection therewith except at a down hole point in the casing near the bottom thereof whereat the pipe is at... | 04/12/1988 |
| 4679627 | Method of oil recovery A method of recovering petroleum fluids from an underground reservoir comprising the steps of: injecting into the reservoir a substantially water insoluble gas; generating and directing pressure waves into the reservoir to release petroleum fluids retaine... | 07/14/1987 |
| 4674571 | Method and apparatus for improving oil production in oil wells Method and apparatus for improving oil production in oil wells. The lower end of an elastic steel column is attached to the upper end of a liner. The upper end of the column extends above the top of the well and is attached to a reaction mass lying vertic... | 06/23/1987 |
| 4653587 | Method and apparatus for the sonic cementing of wells in porous formations A method and apparatus for forming an annulus around the outer wall of a well casing to provide a good impervious seal around such casing which is particularly useful where the casing is installed in a porous earthen formation. A first batch of cement is ... | 03/31/1987 |
| 4640360 | Sonic cementing In forming a cement annulus around a well casing to provide an impervious seal around such casing, sonic energy is applied from a sonic oscillator to the casing and transmitted down the casing to the work area. To improve the coupling of sonic energy thro... | 02/03/1987 |
| 4621688 | Clamping jaw device for well servicing machine A clamping jaw device is used to couple sonic energy generated by an orbiting mass oscillator to a pipe string for transmission down the string to a downhole work area. The clamping jaw device includes a pair of similar clamping jaws, each forming a half ... | 11/11/1986 |
| 4574888 | Method and apparatus for removing stuck portions of a drill string Method and apparatus for recovering a stuck element from deep in a well. The lower end of an elastic steel column is attached to the upper end of the stuck element. The upper end of the column extends above the top of the well and is attached to a reactio... | 03/11/1986 |
| 4544031 | Sonic apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata A device for fracturing earthen material includes an elongated stem member having a wedging tool attached to the distal end thereof and a sonic oscillator coupled to the top end thereof. The wedging tool has rib means formed on the outer portions thereof,... | 10/01/1985 |
| 4512401 | Method for forming a cement annulus for a well A method for forming an annulus around the outer wall of a well casing to provide a good impervious seal around such casing. A wiper of a flexible soft material which mates with the inner bore of the casing is first placed in the casing at the top thereof... | 04/23/1985 |
| 4471838 | Sonic method and apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata A device for fracturing earthen material includes an elongated stem member having a wedging tool attached to the distal end thereof and a sonic oscillator coupled to the top end thereof. The wedging tool has rib means formed on the outer portions thereof,... | 09/18/1984 |
| 4429743 | Well servicing system employing sonic energy transmitted down the pipe string A well servicing system in which sonic energy is transmitted down a pipe string to a down hole work area a substantial distance below the surface. The sonic energy is generated by an orbiting mass oscillator and coupled therefrom to a central stem to whic... | 02/07/1984 |
| 4366988 | Sonic apparatus and method for slurry well bore mining and production A well bore is formed which runs down to an underground region having deposits of mineral material to be mined, by installing a casing or a drill pipe into the ground. A piping assembly is placed in the bore hole through the casing and the mineral materia... | 01/04/1983 |
| 4342364 | Apparatus and method for coupling sonic energy to the bore hole wall of an oil well to facilitate oil production A sonic pump for pumping oil out of an oil well is installed in a tubing string placed in an oil well casing. Sonic energy is coupled to the tubing string from an orbiting mass oscillator installed thereabove so as to cause vibration thereof at a sonic fr... | 08/03/1982 |
| 4323119 | Vibratory apparatus for mining shale oil or the like Shale or the like having hydrocarbon deposits therein is exposed to a liquid carrier medium such as water or distillate. High level vibratory energy is applied to the hydrocarbon carrying shale and the liquid to cause the oil shale to comminute so as to r... | 04/06/1982 |
| 4299279 | Apparatus for sonically extracting oil well liners A column of elastic material such as steel is lowered into an oil well by means of a derrick to a position such that the end portion thereof is within a liner to be removed. The end portion of the column has clamping means thereon which are employed to ti... | 11/10/1981 |
| 4236580 | Method and apparatus for sonically extracting oil well liners A column of elastic material such as steel is lowered into an oil well by means of a derrick to a position such that the end portion thereof is within a liner to be removed. The end portion of the column has clamping means thereon which are employed to ti... | 12/02/1980 |
| 4169503 | Apparatus for generating a shock wave in a well hole A method and apparatus are provided for recovering oil from an oil bearing soil by means of an electrohydraulic shock wave generated in a liquid by capacitor electrical discharge means.... | 10/02/1979 |
| 4164978 | Oil extraction method A method is provided for recovering oil from an oil bearing earth formation by means of electrohydraulic shock waves generated in a liquid by capacitor electrical discharge means and supplemented with ultrasonic waves.... | 08/21/1979 |
