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9035657 Electromagnetic logging between a cased borehole and surface  
The present disclosure relates to systems and methods for conducting an electromagnetic borehole-to-surface survey of a formation surrounding a borehole. Such methods include deploying a dipole...
8937279 Super-resolution formation fluid imaging with contrast fluids  
Cross-well electromagnetic (EM) imaging is performed using high-power pulsed magnetic field sources, time-domain signal acquisition, low-noise magnetic field sensors, spatial oversampling and...
8901930 Method and apparatus for a non contact metal sensing device  
A method for detecting metal in an inner region of a caster mold during a casting process using a plurality of eddy current probe assemblies, wherein each of the plurality of eddy current probe...
8890541 Method and apparatus for calibrating deep-reading multi-component induction tools with minimal ground effects  
An apparatus and method for calibrating a multi-component induction logging tool. The method may include orienting a Z-transmitter coil to be substantially orthogonal to at least one Z-receiver...
8884622 3D dipole antenna of spiral segments  
A three dimensional (3D) dipole antenna system with spiral leg is described used to measure oscillatory electric field strengths. The system relies on spiral dipole leg segments of limited length...
8854247 Metal detector and ground-penetrating radar hybrid head and manufacturing method thereof  
A hybrid ground penetrating radar (GPR)/metal detector (MD) head includes a V-dipole GPR antenna and transmit and receive MD coils. One of the MD coils is arranged in a quadrupole configuration...
8847601 Method of determining the maximum temperature undergone by a sedimentary rock, especially in the field of hydrocarbon formation  
A method of determining the maximum temperature undergone by a specimen of sedimentary rock during natural heating over a geological process, within the range from 60° C. to 230° C. approximately....
8847576 Phase compensation method and apparatus for current transformers  
A current transformer includes capacitive phase angle error correction in the secondary circuit boosted by an isolating impedance. Temperature compensation for the phase error correction and...
8841899 Electro-magnetic tomography using modulated signal  
Disclosed is an electro-magnetic tomography including: a modulator configured to modulate a generated transmit reference signal using a pseudo-noise signal; a transmitter configured to transmit...
8816716 Diagnostic apparatus for erroneous installation of power storage stacks and vehicle  
A diagnostic apparatus for erroneous installation of power storage stacks includes a first connector portion included in a first power storage stack, a second connector portion included in a...
8803077 Super-resolution formation fluid imaging data acquisition and processing  
Cross-well electromagnetic (EM) imaging is performed using high-power pulsed magnetic field sources, time-domain signal acquisition, low-noise magnetic field sensors, spatial oversampling and...
8770140 Marking apparatus having environmental sensors and operations sensors for underground facility marking operations, and associated methods and systems  
Marking information relating to use of a marking device to perform a marking operation may be acquired from one or more input devices, logged/stored in local memory of a marking device, formatted...
8766639 Proximity detection method and system  
The invention concerns a proximity detection of buried conductive structures before or while digging in areas being excavated. By means of the enclosed methods, devices, and setups, the ability...
8754650 Detection of 3D formation structures based on electro-magnetic coupling measurements  
The present disclosure relates to a method to determine a characteristic of a subsurface formation using electromagnetic coupling components. A downhole logging tool having one or more...
8736270 Look ahead logging system  
A technique utilizes the acquisition of data from desired subterranean regions via a logging system. The logging system is constructed for use in a wellbore and comprises a transmitter module...
8729902 Metal detector analysis and display methods  
Metal detectors use graphical displays offering many analysis methods and user options which were not possible before. The new graphical detector displays allow new ways to display target...
8717029 Apparatus for measuring permittivity of rocks and fault clays using permittivity sensor  
An apparatus for measuring permittivity of a sample. The apparatus includes: a sample chamber including a sealed space portion in which a sample to be measured is put; a pressure adjusting unit...
8686730 System for streamer electrical resistivity survey and method for analysis of underground structure below a riverbed  
A system for measuring electrical resistivity survey checks a border of bedrock or a thickness of a sedimentary layer in a riverbed of a river or lake within a short time. A method for analysis of...
8664586 Super-resolution formation fluid imaging  
Cross-well electromagnetic (EM) imaging is performed using high-power pulsed magnetic field sources, time-domain signal acquisition, low-noise magnetic field sensors, spatial oversampling and...
8636061 Tool for downhole formation evaluation  
An apparatus for determining a property of a downhole formation, the apparatus comprising: an array having a plurality of transmitters and receivers capable of propagating electromagnetic waves...
8614578 Attenuation of electromagnetic signals passing through conductive material  
The present disclosure relates to determining the attenuation of an electromagnetic signal passing through a conductive material. An antenna is provided and placed in relatively close proximity to...
8589079 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8577614 Information characterization system and methods  
The present disclosure provides a method of normalizing characterization information comprising: defining a plurality of characteristics, for each characteristic defining a set of allowed values...
8575938 Electrical power system for towed electromagnetic survey streamers  
A marine electromagnetic receiver cable includes a plurality of signal processing modules disposed at spaced apart locations along the receiver cable. A power supply line is connected to each of...
8566036 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8566037 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8494776 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8482291 Substrate structure  
A substrate includes a first plate member; a plurality of first electrodes provided on the major surface of the first plate member, the first electrodes including at least one electrode for...
8478533 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8456159 Stabilization system for sensors on moving platforms  
A stabilized field sensor apparatus collects field data, in particular magnetic field data, with reduced motion noise. The apparatus includes a tear drop shaped housing, a tow frame in the...
8390294 Multi-resolution borehole resistivity imaging  
An apparatus, method and computer-readable medium for obtaining a resistivity image of an earth formation. The apparatus includes a downhole assembly configured to be conveyed in a borehole...
8347658 Method and system for passive electroseismic surveying  
A method of passive surveying comprises generating one or more detected signals by passively detecting a signal generated within a subsurface earth formation due to a seismoelectric response or an...
8301379 Method of interpolation between a plurality of observed tensors  
A method of interpolation between a plurality of field gradient tensors including the steps of: accessing a plurality of field gradient data;formatting said plurality of field gradient data into...
8264229 Electromagnetic geological metrology system  
An electromagnetic geological metrology system comprises: (a) a transmitter arrangement for generating outbound radiation towards a geological formation;(b) a receiver arrangement for receiving...
8265913 Electromagnetic surveying  
A method of analysing results from a controlled source electromagnetic survey of a region of interest containing a previously identified geological structure suitable for bearing hydrocarbons is...
8253619 Electromagnetic scanning imager  
In one aspect, the present invention provides an imager, preferably portable, that includes a source of electromagnetic radiation capable of generating radiation with one or more frequencies in a...
8230918 Method of characterizing hydrocarbon reservoir fractures in situ with artificially enhanced magnetic anisotropy  
Reservoir fractures are characterized directly in situ without need to acquire and analyze formation sample cores. A magnetic fluid is injected into an isolated section of the reservoir. The...
8228066 Instrument for measuring electromagnetic signals  
A device and method for measuring electromagnetic signals that can be used to take measurements at or near the sea floor. The device comprises a central housing, a data management system located...
8174266 Multi-resolution borehole resistivity imaging  
An apparatus, method and computer-readable medium for obtaining a resistivity image of an earth formation. The apparatus includes a downhole assembly configured to be conveyed in a borehole...
8138763 Method for quantitative separation of electromagnetic induction and induced polarization effects  
The invention relates to the field of electrical exploration and to the methods of determination of subterranean formations properties by means of electric parameters of subterranean formations...
8085050 Robust inversion systems and methods for azimuthally sensitive resistivity logging tools  
Methods and systems for determining the horizontal resistivity, vertical resistivity, and relative dip angle of anisotropic earth formations. Some of the disclosed methods and systems measure...
8067941 System for streamer electrical resistivity survey and method for analysis of underground structure below a riverbed  
A system for measuring electrical resistivity survey checks a border of bedrock or a thickness of a sedimentary layer in a riverbed of a river or lake within a short time. A method for analysis of...
8010291 Processing measurement data that involves computing a derivative of the measurement data that represents a subterranean structure  
To process measurement data representing a subterranean structure, a derivative of the measurement data collected by at least one survey receiver is computed, with respect to frequency. A response...
7991553 Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys  
Characterizing a reservoir with electromagnetic imaging surveys includes normalizing measured voltage data by transmitter moment, sorting the normalized voltage data into common receiver profiles,...
7982465 Electromagnetic method on shallow water using a controlled source  
A method for analyzing acquired electromagnetic measurements (R) made at or in a sea (4) over a seafloor (1) with rock formations (3) having relatively low resistivity (ρ3) for detecting a...
7956794 Short-range radar having a multiple sensor system for determining the location of objects enclosed in a medium  
A radar device is described, in particular a hand-held short-range radar for determining the location of objects enclosed in a medium, including at least one radar sensor, which generates a first,...
7948395 Downhole transmission system comprising a coaxial capacitor  
A transmission system in a downhole component comprises a plurality of data transmission elements. A coaxial cable having an inner conductor and an outer conductor is disposed within a passage in...
7890200 Process-related systems and methods  
A process control system and method for use in controlling operation of a process in response to identification of one or more events, where each event is a condition relating to one or more...
7860655 Electromagnetically detecting thin resistive bodies in shallow water and terrestrial environments  
A technique includes using a first sensor to perform a first electromagnetic field measurement to obtain first data, which is indicative of the presence of a resistive body. The first data is...
RE41829 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...
Matches 1 - 50 out of 321 1 2 3 4 5 6 7 >