Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7948826 | Limited 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. 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... | 05/24/2011 |
| 7663971 | Resonance scattering seismic method Resonance scattering analysis of at least 3-component (3-C) VSP data detects heterogeneities in the proximity of a borehole. A method for seismic exploration of a pre-determined volume of the earth for assessing features of the volume using at least 3-C VSP data gen... | 02/16/2010 |
| 7525873 | Seismic inversion of conditioned amplitude spectra According to a preferred aspect of the instant invention, there is provided herein a system and method for using both a temporal zone of seismic data and conditioned amplitude spectra thereof to determine the underlying layer sequence. The instant invention is suita... | 04/28/2009 |
| 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 |
| 7356410 | Method for the detection and exploration of subterranean hydrocarbon deposits by receivers of acoustic waves in a frequency range from 0.2 to 30 Hz The invention relates to a method for the detection and exploration of subterranean hydrocarbon deposits by receivers of acoustic waves in a frequency range from 0.2-30 Hz arranged at or near the surface, whereby, according to the invention, acoustic signals are rec... | 04/08/2008 |
| 7343245 | Method of processing seismic data to extract and portray AVO information A method of seismic analysis is disclosed for extracting information relating to lithology, porosity, fluids, and AVO types and/or displaying the extracted information. In one possible embodiment, AVO points are plotted and a distance and/or angle is utilized for ex... | 03/11/2008 |
| 7333393 | Amplitude correction for seismic recordings A new approach is described based on reciprocity for estimating acquisition-related effects, which has several advantages over conventional surface-consistent processing techniques: (i) It can be applied to complete recordings, hence does not require the isolation o... | 02/19/2008 |
| 7283422 | Systems for low frequency seismic and infrasound detection of geo-pressure transition zones Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation relationship between a seismic response signal and increasing wavelet waveleng... | 10/16/2007 |
| 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 |
| 7230879 | Method and apparatus for true relative amplitude correction of seismic data for normal moveout stretch effects The present invention provides a method and apparatus for arriving at true relative amplitude destretched seismic traces from stretched seismic traces. The method compensates for offset varying reflection interference effects due to normal moveout. Stretch factors Î... | 06/12/2007 |
| 7167414 | Amplitude preserving prestack migration method A method is disclosed for amplitude preserving Kirchhoff time migration. The method includes calculating estimates of the geometrical spreading terms using a constant velocity approximation. Takeoff and emergence angles are accurately calculated based on a model of ... | 01/23/2007 |
| 7133777 | Method for transmitting wellbore data acquired in the wellbore to the surface A method and apparatus are useful for decomposing a complex distribution of data by modeling the complex distribution as a sum of discrete simple distributions, and processing the simple distributions independently. The independent processing enables the complex dis... | 11/07/2006 |
| 7131113 | System and method on generating multi-dimensional trace files and visualizing them using multiple Gantt charts A system and method for visualizing data in two-dimensional time-space diagrams including generating multi-dimensional program trace files, converting and merging them into interval trace files, and generating multiple time-space diagrams (multiple Gantt charts) to ... | 10/31/2006 |
| 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 |
| 7095677 | Crossplot analysis of A.V.O. anomolies in seismic surveying A method of seismic data analysis to provide clustering of A.V.O. data into A.V.O. anomaly types, the method comprising: obtaining successive values of a plurality of seismic attributes, each seismic attribute comprising a respective property of a seismic reflection... | 08/22/2006 |
| 7092824 | Methods and systems for interactive investigation of geophysical data Methods and systems are provided for investigating an image set of geophysical data distributed over a first N-dimensional volume where N≧2. A subvolume that encloses a known feature of interest within a target set of geophysical data distributed over a second N-d... | 08/15/2006 |
| 7085686 | Method and system for canceling noise and compressing data from a motor phase angle sensor A method and system for canceling noise and compressing data from a motor phase angle sensor. In this invention, phase angle data is sampled at a first sampling rate to generate a sampled phase angle. The sampled phase angle signal is sub-sampled at a second samplin... | 08/01/2006 |
| 7082367 | Seismic data calibration using crossplotted AVO attributes Disclosed herein are systems and methods for calibrating seismic data using seismic attribute pairs such as amplitude versus offset (AVO) attributes. In one embodiment, a method includes: receiving traces from a seismic survey that covers a volume; determining a pai... | 07/25/2006 |
| 7079449 | Methods and systems for low frequency seismic and infrasound detection of geo-pressure transition zones Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation relationship between a seismic response signal and increasing wavelet waveleng... | 07/18/2006 |
| 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 |
| 7069149 | Process for interpreting faults from a fault-enhanced 3-dimensional seismic attribute volume A computer implemented method for interpreting faults from a fault-enhanced 3-D seismic attribute cube. The method includes the steps of extracting faults from a 3-D seismic attribute cube, and of calculating a minimum path value for each voxel of the 3-D seismic at... | 06/27/2006 |
| 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 |
| 7027929 | Seismic data interpolation system Seismic traces of 3D surveys are interpolated using polynomials in 4D space from a less densely sampled real data set of source points S(x,y) and receiver points R(x,y). Input seismic traces should be pre-processed by normal move out (NMO) and static corrections. In... | 04/11/2006 |
| 6996471 | Adding a signal to seismic data The present invention provides a method and apparatus for analyzing seismic data. The method includes determining a portion of the seismic data recorded substantially before the arrival of a seismic signal and adding a test signal to the portion of the seismic data ... | 02/07/2006 |
| 6985404 | Method and apparatus of performing amplitude variation with offset analysis A method for performing amplitude variation with offset (AVO) analysis of a plurality of seismic data traces. The method includes fitting at least a two-term AVO equation to at least three seismic data traces having small angles of incidence using a curve fitting te... | 01/10/2006 |
| 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 |
| 6952649 | Petroleum exploration and prediction apparatus and method A method for predicting the state of a geological formation. The method may include generating a separation key effective to extract a first feature from a signal or signals corresponding to a first state and a second feature, distinct from the first feature, from a... | 10/04/2005 |
| 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 |
| 6904367 | Petroleum exploration and prediction apparatus and method A method for predicting the state of a geological formation. The method may include generating a separation key effective to extract a first feature from a signal or signals corresponding to a first state and a second feature, distinct from the first feature, from a... | 06/07/2005 |
| 6801473 | Method for estimating and removing artifact noise from seismic data A seismic signal is represented as a combination of a geologic signal and a noise signal. The representation of the seismic signal is decomposed into a linear combination of orthonormal components. One or more components are identified in which the geologic signal a... | 10/05/2004 |
| 6757216 | Method for post processing compensation of amplitude for misaligned and misstacked offset seismic data A method for assessing the suitability of seismic data for quantitative amplitude analysis, where the concern is excessive residual normal moveout (RNMO). The invention uses a near offset stack and a far offset stack, the time difference between the two, a mute patt... | 06/29/2004 |
| 6343256 | Illumination corrections to reduce geometrical artifacts in seismic data A method for correcting seismic amplitudes for geometrical artifacts resulting in non-uniform illumination of reflector surfaces. The illumination is calculated for each offset as a function of spatial position. The amplitudes are scaled by a scale factor... | 01/29/2002 |
| 6317384 | Method for geophysical processing and interpretation using seismic trace difference for analysis and display A method for identifying faults and stratigraphic features within seismic data without interpreter bias by processing seismic data to identify the minimum difference between seismic traces. Large values of difference are plotted as display attributes for ... | 11/13/2001 |
| 6278950 | Turning-wave amplitude inversion A method for compensating for amplitude loss in a set of seismic traces, where the amplitude loss is caused by shallow attenuation anomalies. Attenuation factors are calculated from first-arrival amplitudes for long-offset seismic data traces. Those facto... | 08/21/2001 |
| 6058074 | Method and system for detecting hydrocarbon reservoirs using amplitude-versus-offset analysis with improved measurement of background statistics A computer system and method of operating the same to apply overburden corrections to seismic signals prior to amplitude-versus-offset (AVO) analysis is disclosed. The system and method retrieve common midpoint gathers of the seismic signals, and generate... | 05/02/2000 |
| 6041017 | Method for producing images of reservoir boundaries A method of producing images of the limits of a geologic reservoir from measurements of fluid pressure in a well controlled to produce from the reservoir at a constant flow rate. The measurements are taken over a period of time, which includes initiation ... | 03/21/2000 |
| 6028820 | Method for determining the presence of fluids in a subterranean formation A method for seismic data interpretation for the purposes of identification of oil, gas and water accumulation locations and delineation of their contours uses a model of discrete media with inhomogeneous stresses. For a selected reflection horizon, the r... | 02/22/2000 |
| 6026057 | Method and system for correcting for offset-dependent directivity effects in seismic survey signals A method and computer system for correcting seismic signals in a seismic survey, sensed in horizontal and vertical directions at receiver locations, is disclosed. According to the disclosed method and system, the horizontal and vertical seismic signal tra... | 02/15/2000 |
| 6014342 | Method of evaluating a subsurface region using gather sensitive data discrimination A method of evaluating a subsurface region by separating/enhancing a certain type of seismic event data of interest from an overall set of seismic event data which includes other, different types of seismic event data is disclosed herein. In accordance wi... | 01/11/2000 |
| 5986974 | Method for geophysical processing and interpretation using seismic trace difference for analysis and display A method for identifying faults and stratigraphic features within seismic data without interpreter bias by processing seismic data to identify the minimum difference between seismic traces. Large values of difference are plotted as display attributes for ... | 11/16/1999 |
