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| Number | Title | Issue Date |
| 7889598 | Method of seismic processing for the decomposition of a wavefield into harmonic components and applications to the determination of angular gathers of reflectivity Method of processing seismic data representative of at least one wavefield, characterized in that local harmonic components of the wavefield are determined at a given point P of the subsurface by implementing a recurrent processing according to which a harmonic of r... | 02/15/2011 |
| 7660200 | Method for coherence-filtering of acoustic array signal A method waveform processing technique utilizing signal coherence of the array data for processing signals having poor signal-to-noise ratio. Raw waveform data is first transformed into f-k (frequency-wavenumber) domain. A coherence function is then calculated and c... | 02/09/2010 |
| 7564740 | Methods of enhancing separation of primary reflection signals and noise in seismic data using radon transformations Improved methods of processing seismic data which comprise amplitude data assembled in the offset-time domain in which primary reflection signals and noise overlap are provided for. The methods include the step of enhancing the separation between primary reflection ... | 07/21/2009 |
| 7561491 | Radon transformations for removal of noise from seismic data Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. Assembled seismic data are transformed from the offset-time domain to the time-slowness domain using a Radon transformation. Preferably, an offset weight... | 07/14/2009 |
| 7558154 | Method of and apparatus for processing seismic data A method determining a calibration filter to calibrate a first component of multi-component seismic data relative to a second component of the seismic data comprises determining the calibration filter from a portion of the seismic data that contains only events aris... | 07/07/2009 |
| 7508734 | Method and apparatus for acoustic data transmission in a subterranean well The disclosure describes a method and apparatus for effectively communicating data along an acoustic transmission path. The method comprises driving an acoustic transmitter to send a data signal along the acoustic transmission path, where the signal is distorted by ... | 03/24/2009 |
| 7447114 | Non-linear seismic trace matching to well logs A method and apparatus for seismic trace matching to well logs. ... | 11/04/2008 |
| 7436734 | Shaped high frequency vibratory source The present invention is a method of processing seismic data in which one or more seismic vibrators are activated with one or more pilot signals and vibrator motions are recorded along with seismic data. Vibrator signatures are computed from measured vibrator motion... | 10/14/2008 |
| 7433265 | Converted wave energy removal from seismic data Coherent wave noise energy is removed from seismic data by modeling both the P-wave primary energy and the coherent wave noise energy. The P-wave primary energy is modeled first and then subtracted from the input data. The data with the P-wave primary energy removed... | 10/07/2008 |
| 7382685 | Method and apparatus for filtering irregularly sampled data A method and apparatus for filtering data acquired at a plurality of discrete data points is described, using the steps of defining a filter having defined filter values at defined filter points at least partially not coincident with the data points and using the de... | 06/03/2008 |
| 7382682 | Processing seismic data The invention relates to processing seismic data that contains both a desired signal and swell noise. The method is applicable to seismic data is in the frequency-space domain method and comprises determining a signal-only prediction filter from the seismic data at ... | 06/03/2008 |
| 7369980 | Method for constructing a geologic model of a subsurface reservoir The present invention is a method for constructing a geologic model of a subsurface reservoir which is a composite sedimentary body (30) composed of many smaller fundamental sedimentary bodies (32). In one embodiment, the fundamental sedimentary bodies... | 05/06/2008 |
| 7366054 | Tau-P filters for removal of noise from seismic data Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The methods comprise the steps of assembling seismic data into common geometry gathers in an offset-time domain without correcting the data for normal mo... | 04/29/2008 |
| 7328137 | Methods and systems for derivation of missing data objects from test data In an embodiment, there is disclosed a system for derivation of missing data objects from test data. The system may include a data populator having code for: (1) generating data objects from the test data, (2) arranging the data objects in a tree structure, (3) deri... | 02/05/2008 |
| 7324406 | Sensor arrangement for seismic waves A sensor arrangement is provided for use in the seismic investigation of geological formations below the seabed. A plurality of sensor nodes (20) are provided and are positioned gfor deployment on the seabed to collect pressure waves and shear waves from the ... | 01/29/2008 |
| 7319371 | Resonator filter structure having equal resonance frequencies The invention relates to a resonator filter structure (10) for radio frequency (RF) filters, especially a bulk acoustic wave (BAW) filter structure. According to the invention, a resonator filter structure (10) is constructed with a BAW lattice filter ... | 01/15/2008 |
| 7266041 | Multi-attribute background relative scanning of 3D geophysical datasets for locally anomaluous data points Methods for scanning geophysical data sets to find geological entities with specific geophysical responses entail selecting a focus sub-volume and a background sub-volume proximal to the focus sub-volume. The sub-volumes include discrete sampling locations and are l... | 09/04/2007 |
| 7243029 | Systems and methods of hydrocarbon detection using wavelet energy absorption analysis Disclosed herein are systems and methods of hydrocarbon detection based on wavelet energy absorption analysis. One disclosed hydrocarbon detection method embodiment includes: a) obtaining seismic trace data for a region of interest; and b) processing the seismic tra... | 07/10/2007 |
| 7239578 | Removal of noise from seismic data using radon transformations Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The methods comprise the steps of assembling seismic data into common geometry gathers in an offset-time domain without correcting the data for normal mo... | 07/03/2007 |
| 7225662 | Geophone calibration technique Various techniques are described which may be used to facilitate and improve seismic exploration activities. For example, one aspect of the present invention is directed to a technique for enabling in-situ measurement of geophone response parameters. Another aspect ... | 06/05/2007 |
| 7196641 | System and method for audio data compression and decompression using discrete wavelet transform (DWT) A system for audio data processing including sub-systems for compression and for de-compression. The compression sub-system includes an AD converter, a segment-based multi-channel splitter splitting and segmenting signals into channels each with segments, multi-leve... | 03/27/2007 |
| 7180442 | Target indentification method using cepstral coefficients A method of identifying an unknown target comprising creating a density function of cepstral coefficients for a known target; receiving a signal from the unknown target; transforming the signal from a time spectrum to a frequency spectrum using a Fourier transform; ... | 02/20/2007 |
| 7085196 | Method and apparatus for gathering seismic data In the present invention, a seismic receiver contains an onboard digitizer that samples and converts a signal from detected seismic energy into the digital domain. The receiver contains an analog to digital converter, a transmission circuitry, and a link to the seis... | 08/01/2006 |
| 7072768 | Method for laterally extrapolating soil property data using soil samples and seismic amplitude data within a seismic coverage area A method for laterally extrapolating shallow soil properties using soil samples and seismic amplitude data within a seismic coverage area entails obtaining seismic amplitude data for the seismic coverage area and obtaining average soil property and soil impedance da... | 07/04/2006 |
| 7068811 | Protecting images with image markings A method and system for embedding signatures within visual images in both digital representation and print or film. A signature is inseparably embedded within the visible image, the signature persisting through image transforms that include resizing as well as conve... | 06/27/2006 |
| 7054463 | Data encoding using frail watermarks Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be disting... | 05/30/2006 |
| 7050603 | Watermark encoded video, and related methods Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable obj... | 05/23/2006 |
| 7024021 | Method for performing stratigraphically-based seed detection in a 3-D seismic data volume The invention is a method for performing a stratigraphically-based seed detection in a 3-D seismic data volume. The method incorporates criteria that honor the layered nature of the subsurface so that the resulting seismic objects are stratigraphically reasonable. T... | 04/04/2006 |
| 7003132 | Embedding hidden auxiliary code signals in media Methods for embedding and reading auxiliary messages from image signals use embedded code signals modulated with the auxiliary message. These embedded ode signals may be used to convey hidden tracking codes in images, video and printed objects. The embedded code sig... | 02/21/2006 |
| 6987706 | Removal of noise from seismic data using high resolution radon transformations Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. The seismic data is transformed from the offset-time domain to the time-slowness domain using a high resolution Radon transformation. That is, the Radon ... | 01/17/2006 |
| 6965682 | Data transmission by watermark proxy A media object sensed at one location is delivered at a second remote location, or an application associated with the object is made available at the second location. In some embodiments, the delivered object is of a higher quality than the sensed object. In other e... | 11/15/2005 |
| 6961283 | Adaptive filtering apparatus and method for seismic data acquisition The present invention provides an adaptive filtering method for substantially eliminating ground roll noise encountered during seismic data acquisition. An apparatus for acquiring seismic data is provided that includes an adaptive filtering circuit coupled to a mult... | 11/01/2005 |
| 6959386 | Hiding encrypted messages in information carriers An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive ac... | 10/25/2005 |
| 6956790 | Borehole sonic data processing method A method of processing sonic wireline or logging while drilling data acquired in a borehole that includes filtering the sonic data to attenuate tool-borne and borehole-borne arrivals; migrating the filtered sonic data; and beamforming the filtered and migrated sonic... | 10/18/2005 |
| 6950371 | Method for signal-to-noise ratio enhancement of seismic data using frequency dependent true relative amplitude noise attenuation A method for enhancing signal-to-noise (S/N) ratio of seismic data is presented. An ensemble of input traces is decomposed into a plurality of frequency bands of traces. Trace and signal power and then a maximum allowable signal-to-noise ratio are estimated for each... | 09/27/2005 |
| 6917724 | Methods for opening file on computer via optical sensing By printing documents and other objects with machine readable indicia, such as steganographic digital watermarks or barcodes, a great variety of document management functions can be enabled. The indicia can be added as part of the printing process (after document da... | 07/12/2005 |
| 6917691 | Substituting information based on watermark-enable linking OLE-like principles are implemented using watermark data in digital objects in order to effect object linking or embedding. In one embodiment, a photocopier scans an original paper document to produce image data. This image data is analyzed for the presence of water... | 07/12/2005 |
| 6912467 | Method for estimation of size and analysis of connectivity of bodies in 2- and 3-dimensional data A method for performing region growing in a data volume that accounts for noise in the data on a probabilistic basis. The data volume is divided into discrete cells, and a probability distribution for each cell's datum value is calculated. Each probability distribut... | 06/28/2005 |
| 6882938 | Method for separating seismic signals from two or more distinct sources A method is disclosed for separating energy resulting from actuating at least two different seismic energy sources from seismic signals. The sources are actuated to provide a variable time delay between successive actuations of a first one and a second one of the so... | 04/19/2005 |
| 6856575 | Monitoring a microseismic event A method of monitoring a microseismic event includes detecting the event to produce a first signal dependent on the event. The first signal includes noise at a frequency of, for example 50 Hz. A first sample of the first signal is taken. Then a second sample of the ... | 02/15/2005 |
