Enso and Sunspot Cycles in Varved Eocene Oil Shales from Image Analysis

Maurizio Ripepe , Lillian T. Roberts , Alfred G. Fischer

Journal of Sedimentary Research (SEPM)

.... (1986), this suggests that some but not all of the oil shale of the Green River Formation is truly varved and can be used to infer climatic time-series...

Low Frequency Shadow Zone Analysis Based on CWT Spectral Decomposition: Case Study of South Sumatra Basin

Abdul Haris, I Nengah Suabdi, Erwinsyah, Adriansyah, Abdullah Nurhasan, Ahsanul Khair, Ian A. Kainama

Indonesian Petroleum Association

... will show the instantaneous or dominant frequency of seismic data series that gives us further information about rock properties below the surface...

Abstract: Estimation of Q: a Comparison of Different Computational Methods; #90187 (2014)

Peng Cheng and Gary F. Margrave

Search and Discovery.com

... functions H12 (f) and H21 (f) can be computed from h12 (t) and h21 (t) by taking Fourier transform. Following that, the power spectral ratios over...

Fourier Grain Shape Analysis as a Tool for Indicating Batch Recoveries of Bitumen from Athabasca Tar Sands: ABSTRACT

Marian McNally Smith, Robert Ehrlich, Arvid Hardin

AAPG Bulletin

...Fourier Grain Shape Analysis as a Tool for Indicating Batch Recoveries of Bitumen from Athabasca Tar Sands: ABSTRACT Marian McNally Smith, Robert...

ABSTRACT: The Application of 3D Seismic Semblance for Faults and Stratigraphic Features Using Cepstral Decomposition, by Alao, Olatunbosun A.; Adepelumi, Adekunle A.; Ako, Bankole D.; Ofuyah, William N.; #90142 (2012)

Search and Discovery.com

Adaptive UMAP based multiple-frequency attribute blending and its application on hydrocarbon reservoir characterization

Zezhou Zhang, Naihao Liu, Yang Yang, Zhiguo Wang, Rongchang Liu, Jinghuai Gao

International Meeting for Applied Geoscience and Energy (IMAGE)

... the average Fourier spectrum of seismic data to obtain its dominant frequency fm . (3) Select multi-frequency components. We first calculate...

Spectrum Extrapolation to Increase Resolution: ABSTRACT

D. G. Stone

AAPG Bulletin

... except in the framework of Wiener filtering. An alternate method is possible using Fourier theorems to extrapolate the spectrum to higher frequencies...

Interactive Gridding: ABSTRACT

James A. Downing

AAPG Bulletin

... derived from gridded surface models. Processing and analysis techniques such as surface filtering, trend analysis, Fourier transforms, and simple...

Abstract: Seismic Time-Frequency analysis by Empirical Mode Decomposition; #90187 (2014)

Jiajun Han and Mirko van der Baan

Search and Discovery.com

... on real data demonstrates that this method promises higher spectral-spatial resolution than the short-time Fourier transform. Application on field...

Multi-Step Auto-Regressive Reconstruction of Nonuniformly Sampled, Aliased Seismic Records; #41563 (2015)

M. Naghizadeh, M. D. Sacchi

Search and Discovery.com

... seismic section is regularly sampled in space. Irregularly sampled data can be reconstructed using Fourier methods. In this case, the Fourier...

Effects of Tropical Weathering on Quartz Grain Shape: an Example from Northeastern Australia

Kenneth Pye , Jim Mazzullo

Journal of Sedimentary Research (SEPM)

... of the maximum projection profile of each quartz grain was measured by the Fourier series in closed form (Ehrlich and Weinberg 1970). The shape...

New Approach: Using Relative Inversion with Spectral Decomposition to Distinguish Thin Layers in the 33-Series Sand Reservoirs of the Widuri Field, Southeast Sumatra, Indonesia

Ratih Muliani, Reza Widiatmo, Heri Gunawan, Pranowo Nugroho, Hairunnisa, Awal Mandong, Rino Saputra

Indonesian Petroleum Association

... and an upper Gita Member. The 30’s series sand of the Intan field are found within the uppermost part of the Gita Member. The 30-1 sand consists...

Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

... be represented by the sum of a series of sinusoid surfaces of various frequencies, amplitudes, phases, and orientations--the larger undulations...

Exploration for Buried Salt Projections by the Method of Normalized Gradient

N. N. Shcherbakova

Petroleum Geology: A Digest of Russian Literature

... -Contours of normalized gravity gradient in a vertical plane; 2-body approximating transverse section of a salt mass; 3-number of members of a Fourier series...

Comparison of Seismic Reconvolution and Gabor Deconvolution in Improving Seismic Images to Detect Local Fluid Trapping

Madaniya Oktariena, Wahyu Triyoso

Indonesian Petroleum Association

... a sparse-spike rendition of seismic data, not a filtered by wavelet sparse-spike, but more of creating a spiky discrete reflectivity series from...

Sources Of Shoaling In Charleston Harbor, Fourier Grain Shape Analysis: DISCUSSION

James Neiheisel

Journal of Sedimentary Research (SEPM)

...Sources Of Shoaling In Charleston Harbor, Fourier Grain Shape Analysis: DISCUSSION James Neiheisel 1979 Vol. 49 No. 2. (June), HAILS, J. R...

Abstract: Properties of Gabor Operators for Seismic Imaging; #90171 (2013)

Michael P. Lamoureux and Gary F. Margrave

Search and Discovery.com

... multiplier with a Fourier multiplier is a Gabor multiplier, in certain useful cases. The Gabor multiplier is bounded by the size of the multiplier...

Sources and Provinces of Late Pleistocene and Holocene Sand and Silt on the Mid-Atlantic Continental Shelf

Deanne Prusak, Jim Mazzullo

Journal of Sedimentary Research (SEPM)

... involves four steps: Step 1.--The digitized shape of each quartz grain is measured by a Fourier series in closed form. The shape is partitioned...

Automated Analysis of Imbrication and Flow Direction in Alluvial Sediments Using Laser-Scan Data

R.P. Millane, M.I. Weir, G.M. Smart

Journal of Sedimentary Research (SEPM)

... in the case of the Shotover River. Peak positions were subsequently estimated by fitting a three-term Fourier series to I(d, θ) for each value of d...

Shape Sorting During Wind Transport of Quartz Silt Grains: DISCUSSION

Kenneth Pye

Journal of Sedimentary Research (SEPM)

... of Science, Series 5, v. 35, p. 64-73. MAZZULLO, J., ALEXANDER, A., TIEH, T., AND MENGLIN, D., 1992, The effects of wind transport on the shapes of quartz...

Abstracts: Revisiting Homomorphic Wavelet Estimation and Phase Unwrapping; #90173 (2015)

Roberto H. Herrera and Mirko van der Baan

Search and Discovery.com

... given as a convolution between the propagating wavelet and the reflectivity series of the earth and normally it is assumed that a white noise is added...

Abstracts: The Deconvolution of Multicomponent Trace Vectors; #90173 (2015)

Xinxiang Li, Peter Cary, and Rodney Couzens

Search and Discovery.com

... by the autocorrelation of a segment of the trace. In the Fourier domain the autocorrelation of a trace is its power spectrum. Extending the discussions...

Understanding Attributes and Their Use in the Application of Neural Analysis … Case Histories Both Conventional and Unconventional, #41473 (2014).

Deborah Sacrey, Rocky Roden

Search and Discovery.com

... in a 3D volume. A series of case histories, both unconventional and conventional in nature are shown in which neural mapping have helped find production...

The Effect of Grain Orientation on Fourier Shape Analysis

Stephen E. Tilmann

Journal of Sedimentary Research (SEPM)

...The Effect of Grain Orientation on Fourier Shape Analysis Stephen E. Tilmann 1973 Vol. 43 No. 3. (September), The Fourier shape analysis of fifty...

Location of Littoral Energy Fence and Resolution of Relict Features on Atlantic Shelf, United States--Fourier Grain Shape Analysis: ABSTRACT

Debra Riester, Robert Ehrlich

AAPG Bulletin

...Location of Littoral Energy Fence and Resolution of Relict Features on Atlantic Shelf, United States--Fourier Grain Shape Analysis: ABSTRACT Debra...