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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 7511503 | Multiple electrode method and device for geoelectrical mapping of near surface layers The invention a method and device for carrying out geoelectric mappings. The device includes electrodes, a power supply and a voltage measuring device, for carrying out the method. The electrodes are disposed apart from one another on ground to be investigated and e... | 03/31/2009 |
| 7411399 | Electromagnetic survey system with multiple sources Multiple sources are provided for a transmitter cable for use in electromagnetic surveying. The transmitter cable includes a dipole antenna comprising a pair of spaced apart electrodes mounted on their respective cables. Two antennas may be powered from each source.... | 08/12/2008 |
| RE40321 | Remote reservoir resistivity mapping A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first determined using geological and geophysical data in the vicinity of th... | 05/20/2008 |
| 7333893 | Method for spatially interpreting electromagnetic data using multiple frequencies Method for removing effects of shallow resistivity structures in electromagnetic survey data to produce a low frequency resistivity anomaly map, or alternatively imaging resistivity structures at their correct depth levels. The method involves solving Maxwell's elec... | 02/19/2008 |
| 7319332 | Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom Method and device for determining the formation factor of underground zones from drill cuttings. The device comprises a cell (1) associated with a device for measuring the electrical conductivity of the cell with the content thereof. The cell containing the d... | 01/15/2008 |
| 7309991 | Scanning probe inspection apparatus A pair of pads is formed on an insulating layer formed on a top surface of a substrate, and a plurality of through-holes is laid out at equal intervals between the pads. Adjoining through holes are connected alternately by upper-layer wire interconnect lines exposed... | 12/18/2007 |
| RE39844 | Remote reservoir resistivity mapping A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first determined using geological and geophysical data in the vicinity of th... | 09/18/2007 |
| 7218932 | Satellite mobile telephone cell departure prediction A mobile station (4) in a satellite mobile telephone system predicts when it will move into another cell on the basis of one set of broadcast information thereby reducing the overall processing burden. The mobile station (4) can predict with a useful d... | 05/15/2007 |
| 7205780 | Multi-frequency capacitive measurement device and a method of operating the same A method and a system is provided that includes a multifrequency generator supplying signals of at least three different frequencies to an electrode assembly, the capacitance of which is detected for a plurality of different frequency points. In this way, the capaci... | 04/17/2007 |
| 7203046 | Overcurrent detecting device An overcurrent detecting device for detecting an overcurrent in a load circuit, includes a DC power supply, a load, a semiconductor switch that controls ON/OFF of the load, a driver circuit that outputs a driving signal to the semiconductor switch, a reference volta... | 04/10/2007 |
| 7203599 | Method for acquiring transient electromagnetic survey data A method for controlled source electromagnetic Earth surveying includes deploying a plurality of electromagnetic sensors in a selected pattern at the top of an area of the Earth's subsurface to be surveyed. At least one of a transient electric field and a transient ... | 04/10/2007 |
| 7109718 | Underground exploration apparatus A current to be applied to a ground is defined as the sum of two sinusoidal waves having first and second frequency components. A signal to be used at the time of synchronous detection is defined as a difference between the sinusoidal waves having the first and seco... | 09/19/2006 |
| 7106076 | Device for the simultaneous application of electrical signals and measurement of the electrical potential in a sample An electrode, in the form of a spike, for insertion into a sample, has a large-area jacket adapted for applying an excitation current to the sample and a small-area tip electrically decoupled from the jacket, at which a potential measurement is made. ... | 09/12/2006 |
| 7042801 | System for geophysical prospecting using induce electrokinetic effect Methods are disclosed employing seismic waves having infrasonic frequencies in the range of about 0.1–20 Hz for generating electromagnetic waves of similar infrasonic frequency in hydrocarbon bearing subterranean formations located at depths up to about 5000 meter... | 05/09/2006 |
| 7034539 | Underground exploration apparatus, system and method The object of the present invention is to realize a low-invasive underground exploration apparatus, system, and method which are capable of specifying the kind, three-dimensional position, and amount of a substance present in the ground. The underground exploration ... | 04/25/2006 |
| 7026820 | Method and apparatus for minimizing direct coupling for downhole logging devices A method and apparatus for minimizing direct coupling between transmitters and receivers on a downhole logging tool are disclosed. One embodiment includes a transmitter, a bucking device, and a plurality of receivers, where signals may be directly coupled from the t... | 04/11/2006 |
| 6944546 | Method and apparatus for inversion processing of well logging data in a selected pattern space Method and apparatus for deriving information regarding a subsurface geophysical formation. Well logging data is acquired for the subsurface geophysical formation. Geometrical parameters for the subsurface geophysical formation are determined by inversion processing... | 09/13/2005 |
| 6747205 | Device for assisting in the measurement of the earth resistance The invention relates to a device for assisting in the measurement of the earth resistance comprising a ground rod with a wire coiled up on a reel or the like, and electrical connecting means for connecting the wire to the ground rod. To provide such a device which ... | 06/08/2004 |
| 6664788 | Nonlinear electroseismic exploration A method for seismic exploration using nonlinear conversions between electromagnetic and seismic energy, with particular attention to the electromagnetic source waveform used. According to the invention, seismic returns from a source waveform are correlat... | 12/16/2003 |
| 6603313 | Remote reservoir resistivity mapping A method for surface estimation of reservoir properties, wherein location of and average earth resistivities above, below, and horizontally adjacent to the subsurface geologic formation are first determined using geological and geophysical data in the vic... | 08/05/2003 |
| 5801537 | Method and apparatus for measuring in-place soil density and moisture content A method and apparatus for measuring in-place soil density and moisture content. A cylindrical cell is disclosed which may be used to measure the density and the dielectric constant of a soil sample placed within the cylindrical cell. Also disclosed is a ... | 09/01/1998 |
| 5514963 | Method for monitoring an area of the surface of the earth A method for monitoring an area of the surface of the earth uses measurement probes arranged in a grid for determining the self-potential with respect to a base probe. The measurement probes are interrogated repeatedly. The earth resistance between measur... | 05/07/1996 |
| 5467018 | Method of processing transient electromagnetic measurements in geophysical analysis A method of geophysical analysis includes transmitting an electromagnetic signal into the earth and measuring the resulting transmission of that signal through the earth to a plurality of spaced recording units. The values of the transmitted signal are lo... | 11/14/1995 |
| 4972151 | Steered-beam satellite communication system A satellite communication system employing a satellite in a geostationary orbit about the earth for communicating with ground stations disposed along a region of the earth positioned along an arc of a great circle of the earth. The satellite carries a fre... | 11/20/1990 |
| 4931736 | Method of and apparatus for microelectric measuring of inhomogeneities on the walls of boreholes for use in well logging The method of measuring local rock inhomogeneities on the wall of a borehole is disclosed. The method of measurement includes the step of generating microelectric fields in a conductive way on an area of the wall of the borehole insulated from the drillin... | 06/05/1990 |
| 4752881 | Electrical resistivity geological surveying apparatus and method utilizing plural cable sections with controlled distributed electrode/cable conductor switching A resistivity surveying apparatus comprises a base station (9) and 30 reels (RL1 to RL30). The base station (9) comprises a computer (10) and a resistivity meter (11) having four output terminals. Each reel has a multi-line cable (CB1 to CB30) which inclu... | 06/21/1988 |
| 4654598 | Dielectric methods and apparatus for in situ prediction of porosity and specific surface area (i.e., soil type) and for detection of hydrocarbons, hazardous waste materials, and the degree of melting of ice and to predict in situ stress-strain behavior A soil probe, comprising, in one form, a cylindrical member of insulating material having a pair of metal, electrically conductive, ring electrodes mounted a short distance above a conical portion at the lower end of the probe, these ring electrodes lie f... | 03/31/1987 |
| 4210868 | Method for detecting an underground flame front using resistance probes Disclosed is a method for detecting the flame front in the in situ combustion of a subterranean carbonaceous stratum which comprises providing two or more resistance probes inserted into the ground electrically connected in one or more circuits capable of... | 07/01/1980 |
| 3975676 | Plural electrode system for determining the electrical parameters of large samples of materials in situ A system and method for determining the electrical parameters of large samples of materials in situ. A set of linear electrodes in boreholes forms a square pattern; positive and negative electrical potentials on alternate electrodes create symmetry planes... | 08/17/1976 |
