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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7426439 | Method and apparatus for marine seismic data acquisition The present invention provides a method and apparatus for seismic data acquisition. One embodiment of the method includes accessing data acquired by at least two particle motion sensors. The data includes a seismic signal and a noise signal and the at least two part... | 09/16/2008 |
| 7313481 | Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer A method for simulating water-hammer waves in a borehole is used to estimate formation parameters such as porosity and permeability, and to design completion strings. The simulation method uses a model that has a plurality of layers, at least one of the layers inclu... | 12/25/2007 |
| 7310580 | Method for borehole measurement of formation properties The present invention is a method of estimating formation properties by analyzing acoustic waves that are emitted from and received by a bottom hole assembly. A bottom hole assembly may be deployed in a borehole to estimate formation properties. From the bottom hole... | 12/18/2007 |
| 7234537 | Sonic drill A sonic drilling apparatus having a work piston within a cylinder chamber to provide a vibratory force through the alternate application of fluid under pressure into the bore above and below the piston in a manner that the piston will be forced to reciprocate within... | 06/26/2007 |
| 7178626 | Method of seismic evaluation of subterranean strata A method of conducting seismic evaluation of a subterranean formation wherein a rigid, elongate member having a first end and a second end is positioned such that the first end of the elongate member is at a point on the earth's surface, imparting an impulsive force... | 02/20/2007 |
| 7139219 | Hydraulic impulse generator and frequency sweep mechanism for borehole applications This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring... | 11/21/2006 |
| 7134512 | Method of downhole drilling and apparatus therefor A downhole drilling apparatus suspended by tubing includes a drill bit driven by an electric motor powered by a cable means. The motor is mounted upon a hollow shaft which allows fluid to pass through, so that a fluid circuit along the tube and back along the annulu... | 11/14/2006 |
| 7059426 | Acoustic flow pulsing apparatus and method for drill string An underground drilling method and apparatus generates intense pressure pulses at a location at the surface. The pressure pulses propagate down through a drill string to a drill bit. The pulses may be generated by creating water hammer in flowing drilling mud. Inten... | 06/13/2006 |
| 6985815 | Instantaneous spectral analysis A method of seismic data processing is described in which a particular wavelet is selected from a plurality of wavelets as being most characteristic of a received seismic signal. A subtracted signal can be determined by subtracting a weighted signal of the particula... | 01/10/2006 |
| 6976392 | Atomic clock for downhole applications A system and method for acquiring seismic data are disclosed. The system comprises a controller for causing the generation of a seismic signal, where the controller has a first clock used for time-stamping a record of the generated seismic signal. A seismic receiver... | 12/20/2005 |
| 6910542 | Acoustic flow pulsing apparatus and method for drill string An underground drilling method and apparatus generates intense pressure pulses at a location at the surface. The pressure pulses propagate down through a drill string to a drill bit. The pulses may be generated by creating water hammer in flowing drilling mud. Inten... | 06/28/2005 |
| 6837105 | Atomic clock for downhole applications A system and method for acquiring seismic data are disclosed. The system comprises a controller for causing the generation of a seismic signal, where the controller has a first clock used for time-stamping a record of the generated seismic signal. A seismic receiver... | 01/04/2005 |
| 6782970 | Acoustic source using a shaftless electrical hammer A shaftless acoustic source is disclosed having a solenoid, a bullet and driving electronics. The bullet, which is positioned inside the solenoid's coil, can be accelerated by a magnetic force generated when a current pulse is applied to the coil. Acoustic energies ... | 08/31/2004 |
| 6747914 | Use of minor borehole obstructions as seismic sources An acoustic system and method for monitoring a hydrocarbon reservoir. Wellbore tube wave energy may be created by natural or ambient sources or tube waves may be excited intentionally. Wellbore tube wave energy is converted to seismic body wave energy at minor boreh... | 06/08/2004 |
| 6286612 | Shutoff valve for marine acoustic generator A valving system is disclosed which generally comprises a body including an inlet and an outlet where the inlet is disposed in fluid communication with a fluid flow passage and the outlet is disposed in fluid communication with a pressurized fluid member,... | 09/11/2001 |
| 6237701 | Impulsive suction pulse generator for borehole Suction pressure pulses are generated within a borehole by closing a valve that interrupts the flow of a drilling fluid (e.g., drilling mud) circulating through one or more high velocity flow courses within the borehole. In one embodiment in which the suc... | 05/29/2001 |
| 6164388 | Electropulse method of holes boring and boring machine This invention provides an excavator 1 for crushing a matter to be excavated, existing in an excavating hole in which a discharge liquid is fed, by electric discharge between a plurality of electrodes generated by high-voltage pulses. The excavator compri... | 12/26/2000 |
| 5950736 | Method and apparatus for improving drilling efficiency by application of a traveling wave to drilling fluid A drilling apparatus includes a drill string, a drilling head located at a first end of the drill string, a drilling fluid pump located at a second end of the drill string, wherein the drilling fluid pump pumps a drilling fluid along the length of the dri... | 09/14/1999 |
| 5896938 | Portable electrohydraulic mining drill An electrohydraulic drilling system for drilling holes in material such as rock utilizing a drill stem connected to a flexible cable. The electrical spark or plasma that creates the electrohydraulic pressure wave is powered by an electrical pulse propagat... | 04/27/1999 |
| 5615172 | Autonomous data transmission apparatus A autonomous borehole data transmission apparatus for transmitting measurement data from measuring instruments at the downhole end of a drill string by generating pressure pulses utilizing a transducer longitudinally responsive to magnetic field pulses ca... | 03/25/1997 |
| 5534668 | Deadweight dropping type wave source In a bore holes, a plurality of resilient members and plates are piled up alternately to form a laminate, and a deadweight is dropped onto the laminate. The resilient members are deformed due to the impact force of the dropped deadweight to cause bore hol... | 07/09/1996 |
| 5416281 | Deadweight dropping type wave source In a bore holes, a plurality of resilient members and plates are piled up alternately to form a laminate, and a deadweight is dropped onto the laminate. The resilient members are deformed due to the impact force of the dropped deadweight to cause bore hol... | 05/16/1995 |
| 5382760 | Seismic well source The seismic source (5) according to the invention is associated with a drill string (1) linking a drill bit to a surface installation close to the bit. It comprises a closed chamber (6) fastened inside a drill cellar (4) of the drill string. The section t... | 01/17/1995 |
| 5372207 | Seismic prospecting method and device using a drill bit working in a well The method consists in performing seismic prospecting operations by using a drill bit (1) working at the bottom of a well (2), which generates very powerful acoustic jogs, in transmitting in real time or in delayed time reference signals representative of... | 12/13/1994 |
| 5319610 | Hydraulic acoustic wave generator system for drillstrings An acoustic wave generator for telemetering signals through a drillstem comprises a sub interposed in the drillstem with a central mandrel and a piston mass disposed in sleeved relationship around the mandrel and reciprocable by hydraulic pressure fluid t... | 06/07/1994 |
| 5313025 | Displacement amplified acoustic transmitter This disclosure is directed to a displacement amplifier for forming acoustic pulses and more particularly to one which incorporates a flexible movable lightweight diaphragm of rectangular configuration. It has upper and lower ends which are connected to o... | 05/17/1994 |
| 5115881 | Anti-bounce device for a mass striking a target element An anti-bounce device for a mass striking a target element, with the device including a counter-mass and an arrangement for holding the counter-mass spaced from the mass at a predetermined distance and for braking the mass and the counter-mass to delay th... | 05/26/1992 |
| 4895218 | Multishot downhole explosive device as a seismic source A downhole seismic acoustical signal source capable of selectively firing numerous, prewired explosive charges. The downhole seismic source uses a self-contained firing circuit that is capable of receiving select and fire signals from a seismic crew at th... | 01/23/1990 |
| 4867266 | Seismic energy source An assembly is provided for generating seismic signals in the earth utilizing one or more shells. A tubular barrel made of frangible material, such as plastic, has a shell positioned within it, the shell having a head with an electrically actuated primer ... | 09/19/1989 |
| 4796723 | System for transmitting energy through an apparatus usable for subsoil prospection, lowered inside a well or drill hole A system is provided for transmitting energy to an apparatus, such as a pulsed or vibratory seismic source, lowered inside a well or drill hole. It includes a structure anchorable in a well, mobile means whose linear displacement with respect to the ancho... | 01/10/1989 |
| 4773501 | Device for generating seismic impulses inside a drilling through the fall of a weight onto an anchored target element Device for generating seismic impulses for, for example, seismic prospecting, inside a hole or drilling well by impact of a weight or mass falling onto a target element coupled with a wall of the hole or drilling well. The target element is bound up with ... | 09/27/1988 |
| 4669540 | Topping and tamping plug There is provided a new and useful tamping and topping plug for use in a seismic bore hole, and comprising a cylindrical body member having a forward and a rearward end and terminating at its forward end with a closed end part, a plurality of elongated me... | 06/02/1987 |
| 4582147 | Directional drilling A system for directional drilling of boreholes into the earth under control of the driller at the surface, employing a rotating earth drill including a projectile firing mechanism, that is timed to nonsymmetrically fire projectiles into the earth at contr... | 04/15/1986 |
| 4569412 | Seismic source A seismic source operable in deep bore holes, and especially suitable for acoustic well logging and geophysical exploration, produces a controlled-spectrum seismic impulse. The source has a hammer which is hydraulically cocked through a hydraulic transfor... | 02/11/1986 |
| 4474250 | Measuring while drilling A method of measuring lithology, and other underground conditions, while drilling bores into the earth employing the repetitive firing of projectiles to fracture rock and penetrate the earth and detecting the high intensity acoustic signals being produced... | 10/02/1984 |
| 4252210 | Methods of and apparatus for generating seismic waves In generating seismic waves in earth a generator having a generally elongate, tubular expandable and contractible outer wall portion closed at its upper and lower ends by rigid strength members having separate input and return pressure lines is placed in ... | 02/24/1981 |
| 4252209 | Downhole liquid pressure seismic source and bit positioning system A method of and apparatus for determining the precise position of the drill bit on the bottom of a long drill string in a deep borehole in the earth, during a drilling operation. The method comprises placing a plurality of geophones in a three-dimensional... | 02/24/1981 |
| 4148375 | Seismic vibration source A system for vibrating the earth in a location where seismic mapping is to take place, including forming a relatively shallow hole in the earth such as a hole 10 feet deep, placing a solid propellant in the hole, sealing a portion of the hole above the so... | 04/10/1979 |
| 4103756 | Stress wave generator Method and apparatus are provided for generating in situ in a zone of earth surrounding a bore hole both longitudinal and shear waves and of predetermined relative amplitude, entirely mechanically, avoiding use of explosives, and with relatively low power... | 08/01/1978 |
| 4057780 | Method for describing fractures in subterranean earth formations The configuration and directional orientation of natural or induced fractures in subterranean earth formations are described by introducing a liquid explosive into the fracture, detonating the explosive, and then monitoring the resulting acoustic emission... | 11/08/1977 |
