Filtering Or Noise Reduction/removal Patents (Class 702/17)
  • Patent number: 10353098
    Abstract: A technique includes spatially filtering a signal that is derived from a seismic acquisition. The filtering is associated with a filter length, and the filtering includes varying the filter length with frequency. The filtering may be used in connection with adaptive noise attenuation, which is applied to decomposed subbands. Furthermore, the filtering may be applied during the reconstruction of the signal from the subbands.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: July 16, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventors: James Edward Martin, Ahmet Kemal Özdemir, Bent Andreas Kjellesvig, Ali Ozbek
  • Patent number: 10353099
    Abstract: A method and system of processing seismic data is presented. The method may include, for each of a plurality of seismic traces, generating a respective intermediate set of reflectivity coefficients and a partial deconvolution of an estimated wavelet from the respective seismic trace. The method may also include decomposing a model into a plurality of orthogonal components, and projecting each of a plurality of eigenvectors corresponding to one of the orthogonal components onto intermediate reflectivity coefficients corresponding with all of the plurality of seismic traces at each of a plurality of times to generate a plurality of eigen-coefficients associated with each of the plurality of times. The eigen-coefficients may be used to generate a plurality of basis coefficients, which may then be used to generate a respective updated set of reflectivity coefficients for each of the seismic traces.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: July 16, 2019
    Assignee: ION Geophysical Corporation
    Inventor: Douglas Spencer Sassen
  • Patent number: 10324208
    Abstract: Methods and systems for optimized receiver-based ghost filter generation are described. The optimized ghost filter self-determines its parameters based on an iterative calculation of recorded data transformed from a time-space domain to a Tau-P domain. An initial ghost filter prediction is made based on generating mirror data from the recorded data and using a least squares technique during a premigration stage.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 18, 2019
    Assignee: CGG SERVICES SAS
    Inventors: Ping Wang, Suryadeep Ray, Can Peng, Yunfeng Li
  • Patent number: 10295688
    Abstract: A method for removing internal multiples from collected data, such as seismic data. The method includes predicting internal multiples for each horizon in a plurality of horizons that created the internal multiples. The internal multiples may be predicted from the seismic data in one pass. After predicting the internal multiples, the method includes creating a separate model of internal multiples for each horizon based on the predicted internal multiples for each horizon. The method then iteratively subtracts each separate model of internal multiples for each horizon from the seismic data.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: May 21, 2019
    Assignee: WESTERNGECO L.L.C.
    Inventors: Adriana Citlali Ramirez-Perez, Alan G. Teague, Milton A. Walz, Zhiming Wu
  • Patent number: 10229344
    Abstract: An example method includes acquiring two-dimensional (2D) or three-dimensional (3D) digital images of a rock sample. The method also includes iteratively analyzing property measurements collected throughout the digital images using different subsample sizes to identify a property distribution convergence as a function of subsample size. The method also includes selecting a smallest subsample size associated with the property distribution convergence as a representative elementary area or volume for the rock sample.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: March 12, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Radompon Sungkorn, Jonas Toelke, Yaoming Mu, Carl Sisk, Abraham Grader, Naum Derzhi
  • Patent number: 10114135
    Abstract: A method includes accessing a seismic image comprising a plurality of features of interest. The method also includes defining a plurality of configuration files for a plurality of graphical models. The method further includes applying the plurality of graphical models to the seismic image. The method also includes generating a plurality of scores for each feature of interest, wherein each graphical model generates a score for each feature of interest. The method further includes combining the plurality of scores for each feature of interest into a plurality of combined scores, wherein each feature of interest has a combined score.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 30, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Xiaojie Huang, Ali Can, Erhan Bas, Weina Ge, Shubao Liu, Mark W. Dobin, Mary Johns
  • Patent number: 10088583
    Abstract: A technique includes generating vibroseis sweeps for a vibroseis survey to produce seismic data acquired in response to seismic signals produced by the sweeps. The generation of the vibroseis sweeps including temporally arranging the sweeps into time-overlapping groups. The technique includes regulating a timing of the groups relative to each other based on a slip time. The technique also includes regulating a timing of the sweeps of each group such that consecutive sweep firings of each group are spaced apart by a time substantially less than the slip time.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: October 2, 2018
    Assignee: WESTERNGECO L.L.C.
    Inventors: Claudio Bagaini, Ian Moore
  • Patent number: 10088588
    Abstract: There is a method for generating a final image of a subsurface of the earth. The method includes receiving measured seismic data d of the subsurface; selecting an objective function E that is function of a reflectivity r of the subsurface; and calculating, in a processor, the reflectivity r based on the measured seismic data d, the objective function E, simulated data {tilde over (d)}, a modeling operator M from a reverse time demigration (RTDM) process and an imaging operator MT from a reverse time migration (RTM) process.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: October 2, 2018
    Assignee: CGG SERVICES SAS
    Inventors: Yu Zhang, Lian Duan, Yi Xie
  • Patent number: 10067254
    Abstract: An acquisition effect of a marine survey measurement can be parameterized as a function of time to define a parameterized acquisition effect and a subsurface effect of the marine survey measurement can be parameterized as a function of position to define a parameterized subsurface effect. The acquisition effect and the subsurface effect can be estimated based on the parameterized acquisition effect and the parameterized subsurface effect to define an estimated acquisition effect and an estimated subsurface effect, respectively. The estimated acquisition effect can be removed from the marine survey measurement.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 4, 2018
    Assignee: PGS Geophysical AS
    Inventor: Gert-Jan Adriaan van Groenestijn
  • Patent number: 10001362
    Abstract: A method of processing data from a distributed fibre-optic interferometric sensor system for measuring a measurand, the system comprising multiple interferometric sensors. The method comprises interrogating two or more of the multiple interferometric sensors to record a raw measurement time series for each of the sensors. The method further comprises calculating a common reference time series as a measure of central tendency of the raw measurement time series from two or more reference sensors, the reference sensors being selected from the multiple interferometric sensors. Finally, the method comprises compensating at least one raw measurement time series from a measurement sensor selected from the multiple interferometric sensors with the common reference time series to produce a compensated measurement time series, the measurement sensor being configured to be sensitive to the measurand. The invention further relates to a distributed fibre-optic interferometric sensor system.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: June 19, 2018
    Assignee: OptoPlan AS
    Inventors: Erlend Ronnekleiv, Ole Henrik Waagaard
  • Patent number: 9857488
    Abstract: A system, method and computer program product for seismic imaging implements a seismic imaging algorithm utilizing Reverse Time Migration (RTM) and Full Waveform Inversion (FWI) techniques requiring large communication bandwidth and low latency to convert a parallel problem into one solved using massive domain partitioning. Since in RTM and FWI, the forward wave propagation is iteratively calculated on time step increments, there are very high statistical correlation between the intermediate wavefields at the adjacent time steps. This correlation is exploited in compression of the intermediate wavefields so as to achieve much higher compression ratio and avoid the disk IO bottleneck and reduce the overall computing time substantially. Further, during simulation of a reverse wavefield, reverse predictive encoding technique is performed such that snapshots are not recovered in the reverse propagation path due to a prediction chain.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: January 2, 2018
    Assignee: International Business Machines Corporation
    Inventor: Ligang Lu
  • Patent number: 9772413
    Abstract: Method for acquiring, at reduced acquisition cost, seismic data using simultaneous, field-encoded sources in the field (702), and then constructing pseudo source-records (703) that better meet the requirements for using additional simultaneous computer-encoded sourcing for computer simulations or forward modeling (706) as part of (707) iterative FWI (Full Wavefield Inversion) or RTM (Reverse Time Migration), with additional reduction in computational costs. By better meeting the requirements of simultaneous sourcing for FWI or RTM (701), artifacts and crosstalk are reduced in the output. The method can be used for marine streamer acquisition and other non-fixed spread geometries to acquire both positive and negative offsets and to mitigate the “missing data” problem for simultaneous-source FWI. It can also be used for land data to overcome issues with moving spreads and long continuous records.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: September 26, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Christine E. Krohn, Partha S. Routh
  • Patent number: 9766358
    Abstract: There is provided herein a new system and method of local attribute match filtering which operates in the local attribute domain via the use of complex wavelet transform technology. This approach is adaptable to address various noise types in seismic data and, more particularly, is well suited to reduce the noise in geophone data as long as an associated hydrophone signal is relatively noise-free.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: September 19, 2017
    Assignee: BP Corporation North America Inc.
    Inventors: Zhou Yu, Imtiaz Ahmed
  • Patent number: 9720119
    Abstract: Seismic image filtering machines, systems, program products, and computer implemented methods are provided to generate a filtered seismic image responsive to filtered seismic image data generated by attenuating coherent seismic noise from surface waves of an unfiltered wavefield constructed from unfiltered seismic image data through a single downward extrapolation of the unfiltered wavefield using a plurality of nonstationary convolution operators to perform localized filtering at each of a plurality of spatial locations of the unfiltered wavefield. Various embodiments, for example, can beneficially handle strong lateral velocity variations thus making various embodiments effective tools to remove complicated coherent seismic noise which is typically in the form of exponentially decaying evanescent waves.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 1, 2017
    Assignee: Saudi Arabian Oil Company
    Inventor: Saleh M. Al-Saleh
  • Patent number: 9702998
    Abstract: Method for using the full wavefield (primaries, internal multiples and free-surface multiples) in inversion of marine seismic data, including both pressure and vertical velocity data (21), to infer a subsurface model of acoustic velocity or other physical property. The marine seismic data are separated (22) into up-going (23) and down-going (24) wavefields, and both wavefields are inverted in a joint manner, in which the final model is impacted by both wavefields. This may be achieved by inverting both wavefields simultaneously (25), or one after the other, i.e. in a cascaded approach (35?37, or 45?47), for the subsurface properties (26, 38, 48).
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: July 11, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Reeshidev Bansal, Anatoly Baumstein, Partha S. Routh
  • Patent number: 9651699
    Abstract: A method for characterizing subsurface formations penetrated by a wellbore includes accepting as input to a computer measurements of a physical parameter of the formations made over a selected axial interval of the wellbore. At least one attribute of the measurements is determined from a change in the measurements over the selected axial interval. At least one characteristic of the formations in the selected axial interval using the at least one attribute.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: May 16, 2017
    Assignee: APACHE CORPORATION
    Inventors: Cameron A Snow, James A Ruiz
  • Patent number: 9651696
    Abstract: Methods and systems for shear noise attenuation based on matching vertical particle velocity data and pressure data are described. The shear noise attenuation is based on the fact that different stages of the analysis can be performed with different numbers of wavelet orientations. The analysis is performed for frequency sub-bands for all wave numbers and vice versa.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: May 16, 2017
    Assignee: CGG SERVICES SAS
    Inventors: Can Peng, Rongxin Huang, Biniam Asmerom
  • Patent number: 9633061
    Abstract: A method for determining event counts for a database system includes capturing samples for the active sessions based on a pre-defined sampling frequency and identifying events from the captured samples. The method further includes determining the wait time for each of the identified events and determining an event count for the active sessions using a harmonic mean. The harmonic mean is a summation of the maximum of either one or the ratio of the sampling frequency to the determined wait time for each of the identified events.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 25, 2017
    Assignee: Oracle International Corporation
    Inventors: Uri Shaft, Graham Stephen Wood, John Beresniewicz
  • Patent number: 9542507
    Abstract: Methods, systems, and computer-readable media for analyzing a domain are provided. The method includes defining a mask plane that includes a first dimension of a first number of voxels and a second dimension of a second number of voxels, and selecting a plurality of first angles for orientating the mask plane in the domain with respect to a first axis. The method also includes for each one of the plurality of first angles selected populating, using one or more processors, sum cubes associated with each one of a first plurality of subject voxels. The method also includes selecting a plurality of second angles, and for each one of the plurality of second angles selected, calculating a planar sum for each one of a second plurality of subject voxels selected.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: January 10, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Trond Hellem Bø
  • Patent number: 9461846
    Abstract: Certain embodiments of the present invention provide a system for improved data communications within a remote sensor system. The system includes a sensor node. The sensor node is adapted to generate data based at least in part on a detected event. The sensor node is adapted to communicate the data based at least in part on a rule. Certain embodiments of the present invention provide a method for improved data communications within a remote sensor system. The method includes detecting an event, generating data based at least in part on the event, processing the data based at least in part on a rule, and communicating the data when the rule satisfied.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 4, 2016
    Assignee: HARRIS CORPORATION
    Inventors: Todd William Joslin, Scott J. Cloutier, Paul Edward Voglewede, Robert A. Johnson, Michael Doser, Michael J. Russell
  • Patent number: 9442205
    Abstract: Described herein are various embodiments of methods and corresponding hardware and software that are configured to illuminate or image the permeability field around or near a well that is to be fracked, both prior to fracking and after various fracking stages. The methods and corresponding hardware and software disclosed herein permit the progress of the fracking operation to be monitored at different stages.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 13, 2016
    Assignee: Global Ambient Seismic, Inc.
    Inventors: Peter Anderson Geiser, Jan Meredith Vermilye, Charles John Sicking
  • Patent number: 9389326
    Abstract: Described herein are various embodiments of methods and corresponding hardware and software configured to permit the vicinity around and/or near a well to be imaged, where the well is being subjected to, or has been subjected to, fracking operations. The methods and corresponding hardware and software permit the generation of images of near-well fractures or faults resulting from the fracking.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 12, 2016
    Assignee: Global Ambient Seismic, Inc.
    Inventors: Jan Meredith Vermilye, Peter Anderson Geiser
  • Patent number: 9377548
    Abstract: A method for analyzing characteristics of a geological formation includes obtaining at a processor data representative of at least one of stratigraphic, structural, or physical characteristics of the geological formation, applying at the processor a wavelet transform to at least a portion of the obtained data or data interpreted or derived from the obtained data to derive one or more wavelet transform coefficients representative of the obtained data, segmenting at the processor at least one or more of the obtained data or data interpreted or derived from the obtained data into segments, determining at the processor a measure of variability of the obtained data or the data interpreted or derived from the obtained data over each segment at one or more scales of the wavelet transform.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: June 28, 2016
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Marina Hru{hacek over (s)}ka, David Katz
  • Patent number: 9366775
    Abstract: A system and method are disclosed for substantially eliminating the influence of internal multiples when seismic mapping under-water geographical areas of interest without a priori knowledge of subsurface information. The system and method iteratively locate multiple-generating horizons for predicting internal multiples and uses a lower-higher-lower relationship between the multiple generating horizons. The system and method provide an appropriate and cost-effective means for internal multiple attenuation without subsurface information.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: June 14, 2016
    Assignee: CGG SERVICES SA
    Inventors: Barry Hung, Min Wang
  • Patent number: 9348044
    Abstract: Numerical simulations of elastic wave propagation algorithms are critical components for seismic imaging and inversion. Finite-difference schemes yield good efficiency but cannot ensure the accuracy of the high frequency component. Pseudo-spectral algorithms are accurate up to the Nyquist frequency, but its efficiency depends on the optimization of the fast Fourier transform (FFT) algorithm. The conventional FFT algorithms are optimized for signal processing, in which problems are generally one dimensional time series. For 3D wave propagation, FFT algorithms have the potential to be further optimized. Under current computer hardware architecture, a vectorization scheme for high dimensional FFTs is presented. Compared to conventional numerical scheme implementations, the systems and methods disclose herein has the best performance on the slowest or higher dimensions of data.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: May 24, 2016
    Assignee: CGG SERVICES SA
    Inventors: Sheng Xu, Feng Chen
  • Patent number: 9291733
    Abstract: Computing device and method for determining primary and ghost components from S-waves recorded in near-surface conditions, wherein the S-waves are refracted or reflected from a structure in a subsurface. The method includes a step of receiving seismic data (R, V) with regard to the S-waves, wherein the seismic data includes vertical and radial components recorded with a buried three-component receiver; a step of calculating with a processor a primary component (P) and a ghost component (G) from the vertical and radial components; and a step of computing an image of a subsurface based on the primary and ghost components (P, G). The S-waves form a plane wave.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 22, 2016
    Assignee: CGGVERITAS SERVICES SA
    Inventor: Kristof De Meersman
  • Patent number: 9201154
    Abstract: Computing device, computer instructions and method for denoising marine seismic data recorded with first and second seismic sensors. The method includes receiving first seismic data recorded with the first sensor in a time-space domain; receiving second seismic data recorded with the second sensor in the time-space domain, calculating with a processor models of the first and second seismic data in a transform domain that is different from the time-space domain; calculating in the transform domain an energy related to a down-going energy based on the models of the first and second seismic data; determining a noise in the transform domain corresponding to the second seismic data based on the calculated energy; reverse transforming the noise from the transform domain into the time-space domain; and denoising the second seismic data by subtracting the noise in the time-space domain from the second seismic data.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: December 1, 2015
    Assignee: CGGVERITAS SERVICES SA
    Inventors: Gordon Poole, Sergio Grion
  • Patent number: 9151861
    Abstract: A system for measuring geological data is disclosed. The system includes several transceivers distributed over a geographical area. Each of the transceivers has at least one transmitter and at least one receiver. The transceivers are in communication with each other. The receivers are adapted to measure at least one electrical signal. The transmitters are adapted to inject an electrical current into a subsurface area. The transmitters operate simultaneously to inject the electrical current into the subsurface area simultaneously from a number of locations.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: October 6, 2015
    Assignee: MULTI-PHASE TECHNOLOGIES, LLC
    Inventor: Douglas John LaBrecque
  • Patent number: 9151856
    Abstract: A method for processing seismic data. The method may include receiving seismic data due to a plurality of seismic sources and applying a first operator to the seismic data to generate a first estimate of seismic data. The method may then include applying a second operator to the first estimate of seismic data to generate residual seismic data due to one or more seismic sources. The method may determine a second estimate of seismic data based on the first estimate and the residual seismic data. The method may then process the second estimate of seismic data due to each seismic source to determine the presence of hydrocarbon deposits in a subterranean area of the earth.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: October 6, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Craig J. Beasley, William H. Dragoset, Jr., Antoun Salama
  • Patent number: 9128206
    Abstract: A technique includes decomposing a signal that is derived from a seismic acquisition into a plurality of signals such that each signal is associated with a different frequency band. For each signal of the plurality of signals, the technique includes performing the following: decomposing the signal into subbands in successive stages, where the subbands are associated with at least different frequency ranges of the signal; selectively applying adaptive noise attenuation in between the successive stages such that the stages decompose noise-attenuated subbands; and reconstructing the signal from the subbands resulting from the decomposition. The technique includes combining the reconstructed signals.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: September 8, 2015
    Assignee: WESTERNGECO L.L.C.
    Inventors: Ahmet Kemal Ozdemir, Bent Andreas Kjellesvig
  • Patent number: 9063245
    Abstract: A system and computer program product for seismic imaging implements a seismic imaging algorithm utilizing Reverse Time Migration (RTM) and Full Waveform Inversion (FWI) techniques requiring large communication bandwidth and low latency to convert a parallel problem into one solved using massive domain partitioning. Since in RTM and FWI, the forward wave propagation is iteratively calculated on time step increments, there are very high statistical correlation between the intermediate wavefields at the adjacent time steps. This correlation is exploited in compression of the intermediate wavefields so as to achieve much higher compression ratio and avoid the disk IO bottleneck and reduce the overall computing time substantially. Further, during simulation of a reverse wavefield, reverse predictive encoding technique is performed such that snapshots are not recovered in the reverse propagation path due to a prediction chain.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: June 23, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Ligang Lu
  • Patent number: 9043155
    Abstract: A technique includes processing seismic data indicative of samples of at least one measured seismic signal in a processor-based machine to, in an iterative process, determine basis functions, which represent a constructed seismic signal. The technique includes in each iteration of the iterative process, selecting another basis function of the plurality of basis functions. The selecting includes based at least in part on the samples and a current version of the constructed seismic signal, determining a cost function; and interpreting the cost function based at least in part on a predicted energy distribution of the constructed seismic signal to select the basis function.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: May 26, 2015
    Assignee: WESTERNGECO L.L.C.
    Inventors: Massimiliano Vassallo, Ali Özbek, Dirk-Jan Van Manen, Anthony D. Curtis, Kurt Eggenberger
  • Patent number: 9014985
    Abstract: A system for and computer implemented method for transforming seismic trace information includes obtaining seismic trace information for each trace, the seismic trace information including shot to receiver offset and the vertical velocity of at least one subsurface primary reflector and including respective information resulting from near-surface layering and velocity effects and relating to the primary reflector, reversibly transforming seismic trace information from each non-zero offset trace such that the respective information resulting from the near-surface effects at each non-zero offset position is moved in a time dimension such that they become effectively periodic with respect to respective primary reflector information and in accordance with a periodicity for a zero offset trace at the same surface location, filtering the transformed seismic trace information to remove at least a portion of the information resulting from near-surface effects, and inverting the reversible transforming.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: April 21, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Richard B. Alford, E. Frederic Herkenhoff
  • Patent number: 8976625
    Abstract: A zero-offset VSP survey is carried out with spaced apart receivers located in a vertical wellbore. Spectra of the signals at the receivers following wavefield separation are estimated. An absorption coefficient is estimated using differences in spectra between all pairs of receivers.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: March 10, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Emanouil Blias
  • Patent number: 8977503
    Abstract: Apparatuses and methods for collecting and analyzing seismic data (D) include a frequency dependent noise factor (?2) for stabilizing a transformation matrix (S). The noise factor (?2) is a function of a number of nonzero eigenvalues of the transformation matrix (S).
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 10, 2015
    Assignee: Shell Oil Company
    Inventor: Jonathan Lewis Sheiman
  • Publication number: 20150066375
    Abstract: A method for removing seismic noise from an input seismic trace. The method may receive the input seismic trace. The method may receive one or more noise references for the input seismic trace. The method may receive one or more filters corresponding to the noise references. The method may apply a nonlinear function to the input seismic trace and to the one or more noise references to produce respective output signals for the input seismic trace and for the one or more noise references. The nonlinear function may be capable of determining higher-order statistics. The method may update the filters based on increasing one or more information attributes of the output signals to a predetermined threshold. The method may then filter noise corresponding to the noise references.
    Type: Application
    Filed: March 29, 2013
    Publication date: March 5, 2015
    Inventors: Kuang-Hung Liu, William H. Dragoset, JR.
  • Publication number: 20150066374
    Abstract: Performing seismic data processing using frequency diverse basis functions and converting a data processing problem into a one-norm or zero-norm optimization problem, which can be solved in frequency-space domain. The data processing problems can be data deghosting, data regularization or interpolation. The data being processed can be aliased or un-aliased, single sensor data or group-formed data, single component or multi-component data single source data or simultaneous sources, or some combinations.
    Type: Application
    Filed: April 3, 2013
    Publication date: March 5, 2015
    Inventors: Ying Ji, Julian Edward Kragh, Philip A. F. Christie
  • Patent number: 8965706
    Abstract: Adaptive filtering method to remove ground roll from seismic data. In an M channel adaptive filter, weights Wi are set using an adaptive algorithm based on seeking the minimum in the partial differential of cost function J. The cost function includes an expansion of the primary trace d into d=dg+?d (where: dg is ground roll contribution and ?d=dsig+dran, where dsig is the reflected signal component and dran is a random noise component) and a corresponding expansion of the reference x into x=xg+?x (where xg is ground roll contribution and ?x=xsig+xran; where xsig is a reflected signal component and xran is a random noise component). The delta components are included in the denominator of cost function J to provide an optimal solution of the filter coefficients biased by the reflection signal and random noise is removed.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 24, 2015
    Assignee: WesternGeco L.L.C.
    Inventor: Ying Ji
  • Patent number: 8958267
    Abstract: The invention relates to processing seismic data that includes signals from at least two sources and typically three or four sources where source separation is necessary for geophysical analysis. Specifically, the present invention is a process for correcting data prior to inversion where the correction is provided to correct for the filtering effect of the earth. The earth is a non-homogenous seismic propagator that causes distortions of wavelets of seismic energy related to the source and receiver azimuth and offset that makes the identification of source specific data within the composite data harder to identify. Computing an earth response and correcting for the effects of the earth on the wavelets provides for more resolution and more clarity in the resulting data and better geophysical interpretation.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 17, 2015
    Assignee: ConocoPhillips Company
    Inventors: Peter M. Eick, Joel D. Brewer
  • Patent number: 8954282
    Abstract: Implementations of various technologies for a method for processing seismic data. In one implementation, the method may include receiving a record of seismic data. The record of seismic data may have a plurality of attributes. A first seismic data process may be performed on the record of seismic data. The first seismic data process may generate a plurality of datasets. A selection of a portion of the plurality of attributes for ranking the datasets may be received. A quality score may be determined for each attribute of the portion of the plurality of attributes for each dataset. A ranking may be determined for each dataset based on the quality score.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: February 10, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Horacio R. Bouzas, Ian Scott, Gerard Kavanagh
  • Publication number: 20150032380
    Abstract: A method for de-ghosting seismic data includes receiving seismic data corresponding to plural depth sources or plural depth receivers located at a first depth and a second depth below a geophysical surface, wherein the second depth is below the first depth, where the plural depth sources or plural depth receivers comprise a first seismic receiver located at the first depth and a second seismic receiver located at the second depth, or, a first seismic source located at the first depth and a second seismic source located at the second depth. The method also includes aligning primary reflections within the seismic data to provide improved seismic data. A corresponding system is also disclosed herein.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventor: Julien COTTON
  • Patent number: 8924158
    Abstract: A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: December 30, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Ed Kragh, Everhard Muyzert, Johan Robertsson, Douglas E. Miller, Arthur H. Hartog
  • Publication number: 20140379266
    Abstract: Input survey data containing ghost data is processed, the ghost data containing data caused by a reflection from an interface, and the processing including performing full wave propagation. An output is produced in response to the processing.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 25, 2014
    Inventors: KUN JIAO, DONG SUN, WEI HUANG, XIN CHENG, DENES VIGH
  • Publication number: 20140365135
    Abstract: Computing device, computer instructions and method for denoising input seismic data d. The method includes receiving the input seismic data d recorded in a first domain by seismic receivers, wherein the input seismic data d includes pure seismic data ss relating to an exploration source and coherent noise data n generated by a man-made device; generating a model m in a second domain to describe the input seismic data d; and processing the model m to obtain an output seismic dataset d? indicative of seismic data substantially free of the coherent noise data n generated by the man-made device.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 11, 2014
    Applicant: CGG SERVICES SA
    Inventor: Gordon POOLE
  • Patent number: 8909480
    Abstract: A vibrator-coupled ground filter improves seismic data recorded during a seismic operation. This filter is based on a ground model that takes into consideration the vibrator system, the coupling system between the baseplate and captured ground, and the coupled ground system. Using acceleration data from the baseplate and the reaction mass, the ground model can be used to derive particular variables for the ground model to help characterize the system. Using the derived variables in a ground filter, the recorded seismic data can be corrected to remove errors in the trace data produced by typical assumptions.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: December 9, 2014
    Assignee: Inova, Ltd.
    Inventors: Zhouhong Wei, Thomas Phillips
  • Patent number: 8898020
    Abstract: A method, having application to petroleum exploration or production, for picking the arrival time of seismic waves and use thereof for orienting the components of a multi-component sensor. After acquisition of seismic data using a VSP type method, with a multi-component sensor, a module signal is constructed by calculating the square root of the sum of the squares of at least two orthogonal seismic components. Arrival times of a direct seismic wave are then picked on an amplitude extremum of this module signal. Based on this picking, the seismic components can then be oriented in a unique reference frame whatever the depth of the sensor. A time window is defined on either side of the picked arrival times and the azimuthal direction is determined by maximizing the energy of the horizontal components within this time window. Finally, the three components are oriented in a reference frame defined with respect to the azimuthal direction, which is identical for each depth.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: November 25, 2014
    Assignee: IFP Energies Nouvelles
    Inventors: Charles Naville, Sylvain Serbutoviez, Jean-Claude Lecomte
  • Publication number: 20140340987
    Abstract: A data set representing features of a geologic formation is formed from two or more signal acquisition data set representing independent aspects of the same wavefield. A wavelet transform is performed on the two or more signal acquisition data sets, and the data sets are further transformed to equalize signal portions of the data sets. Remaining differences in the data sets are interpreted as excess noise and are removed by different methods to improve the signal-to-noise ratio of any resulting data set.
    Type: Application
    Filed: November 7, 2013
    Publication date: November 20, 2014
    Inventor: Tilman KLÜVER
  • Patent number: 8886489
    Abstract: In some embodiments, a motion detecting device is configured to detect whether one or more movement events have occurred. The motion detecting device can include: (a) a processing module configured to run on a computational unit; and (b) a sensing device having: (1) one or more pressure sensors configured to provide two or more pressure measurements; and (2) a transmitter electrically coupled to the one or more pressure sensors and configured to transmit the two or more pressure measurements to the computational unit. The processing module is configured to use the two or more pressure measurements to determine whether the one or more movement events have occurred. The sensing device can be configured to be placed in at least one of ductwork of a heating, ventilation, and air conditioning system or an air handler of the heating, ventilation, and air conditioning system. Other embodiments are disclosed.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: November 11, 2014
    Assignee: Georgia Tech Research Corporation
    Inventors: Shwetak N. Patel, Matthew S. Reynolds, Gregory D. Abowd
  • Publication number: 20140324358
    Abstract: Methods and computing systems for processing collected data are disclosed. In one embodiment, a method is provided for predicting a plurality of surface multiples for a plurality of target traces in a record of multi-component seismic data acquired in a survey area. The method may select a target trace. The method may select an aperture of potential downward reflection points for the target trace. The method may calculate dip propagation attributes from the multi-component seismic data. The method may map the dip propagation attributes into a multiple contribution attribute gather based on the aperture. The method may modify the aperture based on the multiple contribution attribute gather. The method may then predict multiples for the selected target trace using the modified aperture.
    Type: Application
    Filed: February 11, 2014
    Publication date: October 30, 2014
    Applicant: WESTERNGECO L.L.C.
    Inventor: PHILIP WILLIAM KITCHENSIDE
  • Publication number: 20140324357
    Abstract: Methods of acquiring and processing seismic data using derivative sensors, such as strain sensors, that facilitate ground roll noise attenuation with seismic interferometry are disclosed. The methods use both seismic data and their spatial derivatives in computing ground-roll noises which are removed from processed seismic data.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 30, 2014
    Applicant: WESTERNGECO L.L.C.
    Inventors: David Fraser Halliday, Julian Edward Kragh, Filippo Broggini