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| Number | Title | Issue Date |
| 8082107 | Methods and computer-readable medium to implement computing the propagation velocity of seismic waves The invention relates to methods and computer-readable medium for computing the propagation velocity of seismic waves in the earth. The invention computes the true propagation velocity of seismic waves in the earth, which is a condition of obtaining an accurate imag... | 12/20/2011 |
| 8014951 | Surface pointing techniques A method for processing seismic data, characterized in that with a view to analyzing them as a function of at least four dimensions. Picking and/or picking propagation is carried out on at least one subset of data which corresponds to a collection of data sampled in... | 09/06/2011 |
| 7881869 | Method and apparatus for evaluating data associated with an offshore energy platform A method for transferring data from an unmanned offshore energy platform to a manned offshore energy platform. The method includes obtaining the data on the unmanned offshore energy platform from a monitoring device, wherein the monitoring device is configured to mo... | 02/01/2011 |
| 7617053 | Processing of seismic data using the S-transform The present invention relates to a method and system for processing seismic data. Seismic data indicative of at least a time-dependent seismic trace are transformed into time-frequency domain using the S-transform. The transformed seismic data are processed for dete... | 11/10/2009 |
| 7408836 | Method of and apparatus for processing seismic data in the presence of anisotropy A method of and apparatus for processing seismic data. A method of processing seismic data comprising the steps acquiring seismic data in at least two shots that have different source-receiver azimuths from one another, and selecting events arising from interface se... | 08/05/2008 |
| 7359284 | Method for processing borehole seismic data Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as... | 04/15/2008 |
| 7355923 | Seismic analysis using post-imaging seismic anisotropy corrections System and method for performing anisotropy corrections of post-imaging seismic data for a subsurface formation. The method may receive seismic data, preferably pre-stack seismic data comprising a plurality of traces, e.g., collected from a plurality of source and r... | 04/08/2008 |
| 7345951 | Method of determining specular information after prestack seismic imaging Method of determining the specular source/receiver pairs associated with seismic images produced from a transformation of multi-offset seismic wave records as a function of time in the depth domain. When using a prestack depth migration algorithm of Kirchhoff... | 03/18/2008 |
| 7321526 | Method and apparatus for water velocity decomposition The present invention provides a method for analyzing traces collected along a plurality of adjacent sail lines in a marine seismic survey area. The method comprises selecting a plurality of trace groups, at least one trace in each group sharing a common midpoint wi... | 01/22/2008 |
| 7319636 | Calibration of pressure gradient recordings A method for computing a pressure signal gradient. The method includes recording a plurality of pressure signals at least one of a first receiver and a second receiver. The first receiver and the second receiver are disposed within a cluster. The method further incl... | 01/15/2008 |
| 7315170 | Calibration apparatus and method using pulse for frequency, phase, and delay characteristic In a device for measuring the properties of a device under test connected by a signal transmission path having reciprocity, a terminal on the device under test side of the signal transmission path is opened; pulse signals are transmitted to a terminal on the measuri... | 01/01/2008 |
| 7315783 | Traveltime calculation in three dimensional transversely isotropic (3D TI) media by the fast marching method A technique for calculating traveltime of a seismic wave in three dimensional tilted transversely isotropic (3D TI) media includes determining a wave vector, defining a unit vector, calculating an angle of the wave vector from an axis and performing a slowness deter... | 01/01/2008 |
| 7286938 | Method of and an apparatus for processing seismic data A method is provided of processing multi-component seismic data acquired by emitting multi-component seismic energy at a source location and acquiring seismic data at a multi-component seismic receiver located at a greater depth than the source location. The seismic... | 10/23/2007 |
| 7283941 | Computer system and method for modeling fluid depletion A method for modeling fluid depletion in a reservoir is disclosed. A map is divided into cells. For each of the cells a value is stored that is based at least in part on a physical characteristic of the cell. At least one cell that contains a depletion location is i... | 10/16/2007 |
| 7271575 | Oscilloscope based return loss analyzer A system, apparatus and method for performing differential return loss measurements and other measurements as a function of frequency uses a digital storage oscilloscope (DSO) having spectral analysis functions. A waveform generator generates a differential test sig... | 09/18/2007 |
| 7269537 | Infrasound sensor with disturbance filtering The invention pertains to the sensing and measurement of infrasound (pressure variations with frequency content under 10 Hertz). The invention measures the infrasound pressure variations and then attenuates undesired contributions due to, but not limited to, changes... | 09/11/2007 |
| 7257492 | Handling of static corrections in multiple prediction A method is for use in seismic data processing includes improving the continuity of the primary events in an original seismic dataset to create a continuous, seismic dataset; predicting at least the first order multiples of the original seismic dataset from the cont... | 08/14/2007 |
| 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 |
| 7222023 | Methods and apparatus for processing seismic data A method of processing seismic data comprises identifying the value of a first parameter associated with an event in a first set of seismic data. The value of a second parameter associated with a corresponding event in a second sent of seismic data is then obtained ... | 05/22/2007 |
| 7196634 | Systems for predicting earthquakes and methods of employing such systems A method of predicting earthquakes includes the step of positioning a first transducer array adjacent to a seismically active region and below the water table, i.e., within the zone of saturation. The first transducer array includes a first plurality of seismometers... | 03/27/2007 |
| 7177765 | Method of general elastic inversion by combination of calculated pseudo-shear and measured compressional seismic amplitude information A method designed to combine both pseudo compressional interval velocity and pseudo shear interval velocity from seismic data for predicting fluid type and porosity in oil and gas exploration. The first step is the generation of ψS, pseudo shear reflectivity data, ... | 02/13/2007 |
| 7136757 | Frequency-dependent processing and interpretation (FDPI) of seismic data for identifying, imaging and monitoring fluid-saturated underground reservoirs A method for identifying, imaging and monitoring dry or fluid-saturated underground reservoirs using seismic waves reflected from target porous or fractured layers is set forth. Seismic imaging the porous or fractured layer occurs by low pass filtering of the window... | 11/14/2006 |
| 7123767 | Manipulating a digital dentition model to form models of individual dentition components A programmed computer is used to create a digital model of an individual component of a patient's dentition. The computer obtains a 3D digital mode of the patient's dentition, identifies points in the dentition model that lie on an inter-proximal margin between adja... | 10/17/2006 |
| 7117093 | Method, media, and signals for processing seismic data to obtain a velocity field A method and apparatus for estimating a seismic velocity field from seismic data including time-amplitude representations associated with source-receiver locations spaced apart by an offset distance and having a midpoint therebetween, the seismic data being arranged... | 10/03/2006 |
| 7110323 | Method, system and apparatus for interpreting seismic data using duplex waves A Method for Interpreting Seismic Data Using Duplex Waves is described. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary reflections, it has been difficult or impossible to use such methods for... | 09/19/2006 |
| 7089118 | Shear wave velocity determination using circumferentially aligned transmitter and receiver elements A method for determining a formation shear wave velocity for a subterranean formation includes propagating a multi-pole acoustic signal in a borehole using an acoustic transmitter and receiving an acoustic waveform from the multi-pole acoustic signal at one or more ... | 08/08/2006 |
| 7089123 | Array scanner control system An optical scanning system adapted to physically adjust scanner settings in response to control feature readings is disclosed. The scanner and methodology finds particular use in reading of biopolymer arrays. The system may operate in any of a number of ways such th... | 08/08/2006 |
| 7069148 | Gas reservoir evaluation and assessment tool method and apparatus and program storage device A Gas Reservoir Evaluation and Assessment Tool utilizes an Analytical Engine to produce predictions of pressure values and other production data at any point in space and at any point in time in a reservoir. A computer system, such as a workstation, stores a Gas Res... | 06/27/2006 |
| 7069200 | Method intended to obtain reflection travel times from an interpretation of migrated cylindrical wave seismic data A method intended to obtain reflection travel times from an interpretation of seismic data in migrated cylindrical waves, for a given value of the parameter defining the slope of these waves, or the superposition of such data associated with various substantially pa... | 06/27/2006 |
| 7065004 | Horizon-based residual depth migration velocity analysis A method is disclosed for processing seismic data. The method includes prestack depth migrating the seismic data to generate common image gathers using an initial velocity-depth model. Horizons in the migrated seismic data are selected. Residual migration velocity a... | 06/20/2006 |
| 7039524 | Shear wave velocity determination using multi-pole wave A method for determining a formation shear wave velocity for a subterranean formation is provided. The method includes propagating a multi-pole acoustic signal in a borehole using an acoustic transmitter and receiving an acoustic waveform from the multi-pole acousti... | 05/02/2006 |
| 7039525 | Method for seismic migration using explicit depth extrapolation operators with dynamically variable operator length Explicit depth extrapolation operators are constructed with variable operator lengths depending on maximum dip angle, accuracy condition, and wavenumber. Operator tables are then constructed using the explicit depth extrapolation operators. In a further embodiment, ... | 05/02/2006 |
| 7035165 | Imaging near-borehole structure using directional acoustic-wave measurement Directional acoustic measurements made in the borehole are used for imaging a near-borehole geological formation structure and determination of its orientation. Four-component cross-dipole data set measured in a deviated borehole in combination with the directionali... | 04/25/2006 |
| 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 |
| 7005993 | Sensor apparatus and method for detecting earthquake generated P-waves and generating a responsive control signal A P-wave sensing apparatus including a printed circuit board having mounted thereon from one to three orthogonally disposed miniature sensors that function as inertia monitoring devices with respect to motion of the external supporting structures, a plurality of amp... | 02/28/2006 |
| 6999879 | Method for controlling seismic coverage using decision theory A method of devising infill strategy in planning a seismic survey, using Monte Carlo methods and value-of-information theory to assess the probable value in well pay-out of a given increase in survey costs to reduce artifact degradation of the quality of the seismic... | 02/14/2006 |
| 6996028 | Velocity analysis on seismic data A number of seismic stacks are precomputed (20) for known velocity fields. The velocity fields are chosen to span the range of velocities of interest. The stacks are then arranged (21) in the 3D memory of a graphics computer (10–14) using time... | 02/07/2006 |
| 6982928 | Seismic P-wave velocity derived from vibrator control system P-wave velocity in a near-surface region of a land area is estimated from a combination of seismic data based upon waves in the near-surface region generated in response to a shock in each of a plurality of upholes drilled in the land area and vibrator dynamic data ... | 01/03/2006 |
| 6980688 | Method and apparatus for investigating integrity of structural member A method for investigating structural integrity utilizes a carrier member having a flexible surface and a plurality of electromechanical transducer elements attached to the carrier member, the transducer elements being spaced from each other along at least two spati... | 12/27/2005 |
| 6950747 | Methods of processing magnetotelluric signals A method for processing magnetotelluric signals to identify subterranean deposits is provided for. The methods comprise obtaining magnetotelluric data from an area of interest. The magnetotelluric data comprises the amplitude of magnetotelluric signals recorded over... | 09/27/2005 |
