Abstract: A Deep Seismic Section across the Malay Basin: Processing of Data and Tectonic Interpretation (Poster 1)

Abd Rahim Md. Arshad, Dashuki Mohd, H. D. Tjia

Geological Society of Malaysia (GSM)

... m of streamer length. During preprocessing, the data set was sampled from 4 ms to 8 ms and decimated to 3:1. Hence the Nyquist frequency of the data...

Irregular acquisition design to maximize information: From cross-lines to ergodic sampling

Mengli Zhang, Yaoguo Li

International Meeting for Applied Geoscience and Energy (IMAGE)

..., but there is no solid theoretical reasons why we use it except for the Nyquist-Shannon sampling that assumes the availability of regular sampling...

Designing and evaluating irregular and opportunistic onshore seismic surveys

Tim Dean, Dave Monk

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavenumber components with zero values beyond the original Nyquist frequency) is sufficient to interpolate unaliased data. This criterion is discussed...

Enhancement of Fault Definition by Using Frequency Spectral Decomposition Technique in Mari Gas Field; #40925 (2012)

Hamid Mushtaq, Farhan Ahmed Khan, Muhammad Haneef

Search and Discovery.com

.... Frequency values were evaluated from 0-125Hz (Nyquist frequency). Animation is the tool used to decide the suitable parameters. Volume Interpretation...

Abstract: Variable-factor S-transform for Time-frequency Decomposition, Deconvolution, and Noise Attenuation; #90172 (2014)

Todor I. Todorov, Gary F. Margrave

Search and Discovery.com

... at Nyquist. We can see good time-frequency resolution for all frequency components. Variable-factor S-transform deconvolution Wiener deconvolution...

Enhancing Vertical Seismic Resolution with Seismic Frequency Restoration and Attributes; #42156 (2017)

Luis Vernengo, Eduardo Trinchero, Maximillian Garcia Torrejon, Ignacio Rovira

Search and Discovery.com

... has a two-millisecond sample interval, it is subsampled to 0.5 milliseconds using the Nyquist frequency as a limit. For the next step, the temporal...

Abstract: Borehole Vibration Response to Hydraulic Fracture Pressure; #90187 (2014)

Andy St-Onge, David W. Eaton, and Adam Pidlisecky

Search and Discovery.com

... survey. The data were sampled at time intervals as low as 0.25 msec (equivalent to a Nyquist frequency of 2000 Hz.). Frac-related microseismic...

Direction-dependent strain transfer function of DAS considering gauge length and pulse shape with its implications on high spatial resolution acquisitions

Peter Hubbard

International Meeting for Applied Geoscience and Energy (IMAGE)

... determines the Nyquist frequency of the transfer function. In the following 1 cases it is taken as 1 m (𝑘𝑘 𝑛𝑛𝑛𝑛 = 0.5 ). Implications for field...

Abstract: Geophone and MEMS Accelerometer Comparison at Spring Coulee, Alberta; #90171 (2013)

Michael S. Hons and Robert R. Stewart

Search and Discovery.com

..., are compared and inspected for frequency content and differences in signal-to-noise ratio (SNR). Amplitude spectra show general similarity between...

High resolution imaging using multiples „ A North Sea case study

Chandan Kumar, Rodney Johnston, Petr Jilek, Xiaolei Song, Mikhail Davydenko

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The temporal sampling is 2ms which corresponds to a Nyquist frequency of 250Hz. Figures 2 and 3 show a near-offset Fourth International Meeting for Applied...

Abstract: Data Interpolation by Angular Weighted MWNI; #90187 (2014)

Mark Ng and Dan Negut

Search and Discovery.com

... weights are derived from an angular search of the input amplitude spectrum in the frequency-wavenumber domain before the inversion begins. Introduction...

Broadband Seismic Technology and Beyond: PART X: IsoMetrix … Isometric Sampling

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... equally-spaced samples taken at a rate which exceeds twice the highest frequency F present in the signal. A time function which has no frequencies outside...

Seismic Attributes for Reservoir Property Prediction„ A Review (Geophysics Poster 16)

Muhammad Sajid, Zuhar Zahir Bin Tuan Harith

Geological Society of Malaysia (GSM)

... zero- to dominant-frequency range is responsive to the presence of fluid whereas the energy loss from dominant to Nyquist-frequency range...

Rejuvenation of a Mature Field Through Application of a Unique Frequency Enhancement Technology, by Marcus L. Countiss, #40076, (2003)

Search and Discovery.com

Understanding Holographic Imaging of Seismic Data— Contrast with Signal Processing Imaging Methods

Norman S. Neidell

GCAGS Transactions

.... 312–320. Robinson, E. A., 2018, Neidell is right: The Leading Edge, v. 37, p. 33–36. Stark, T. J., 2013, Signal recovery beyond conventional Nyquist...

ABSTRACT: Rejuvenation of a Mature Field Through Application of a Unique Frequency Enhancement Technology; #90007 (2002)

Marcus L. Countiss

Search and Discovery.com

... possible to regain frequencies up to Nyquist frequency (half the sampling frequency) on properly recorded and processed data. 2 AAPG Search...

Field Technique Design for Seismic Reflection Exploration

L. R. Denham

Dallas Geological Society

... at the Nyquist frequency. For example, the standard alias filter in a DFS V with converter dynamic range of 80 dB attenuates at least 70 dB at the Nyquist...

ABSTRACT: Quantifying the Benefit from Pressure Gradient Data in Wavefield Reconstruction for Time-Lapse Seismic, by Eggenberger, Kurt; Christie, Phil; Muyzert, Everhard; Vassallo, Massimiliano; Özbek, Ali ; #90135 (2011)

Search and Discovery.com

Abstract: Lamb Waves Recorded in Microseismic Monitoring Wellbores; #90174 (2014)

Andy St-Onge

Search and Discovery.com

... were sampled at rates as low as 0.25 msec, which is equivalent to a Nyquist frequency of 2000 Hz. Signal data observed by MIC contains frequencies...

Nonuniform dispersed source arrays for broadband seismic acquisition

Joaqun A. Acedo, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the acquisition stage. Consequently, when acquiring broadband data, specially designed sources release coherent energy in a pre-defined frequency range...

Comparison of seismic resolution enhancement techniques: Spectral extrapolation vs spectral balancing

Charles I. Puryear

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Figure 1: Spectral balancing workflow Methods The seismic data were first resampled to 1 ms in order to ensure that the Nyquist frequency...

Identification of Fracture Zone in Field AŽ Using Maximum Entropy Method

Aditya T. Pratama, Leonard J.I. Lisapaly

Indonesian Petroleum Association

... estimator. In this study, we use Matlab© Code based on Marple Equation. AVAILABLE DATA (1.5) where fN is the Nyquist frequency of the studied series, PME...

Extending the Resolution of Seismic Reflection Exploration

L. R. Denham

Pacific Section of AAPG

... approach to alias filters is to attenuate to a level comparable with the converter noise at the Nyquist frequency. For example, the standard alias filter...

Abstract: High Resolution Radon Transforms based Compressive Sensing Principles, by Y. Ma and Y. Luo, #90188 (2014)

Search and Discovery.com

A New Insight of Hydrocarbon Potential in Stratigraphic Trap in the Keutapang Formation, North Sumatra Basin

Argya Hastubrata Basundara, Andi Mardianza, Humbang Purba, Ricky Andrian Tampubolon, Shidqi Anugrah Diria, Dedi Retno Haryanto, Herman Darman, Junita Trivanty

Indonesian Petroleum Association

... spectrum with the signal utilising only a fraction of the available bandwidth up to the Nyquist. High-frequency enhancements aim to sharpen the data...