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The AAPG/Datapages Combined Publications Database

Showing 201 Results. Searched 195,354 documents.

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Methods of estimating wavelet stationarity, stabilizing non-stationarity, and evaluating its impact on inversion: A synthetic example using SEAM II Barrett unconventional model

Jesse Buckner, Michael Fry, Joe Zuech, Peter Harris, Bill Shea

International Meeting for Applied Geoscience and Energy (IMAGE)

... an autocorrelation of each trace over a background time window and convert it to an amplitude spectrum. Again, we select a pilot CDP as reference. Once computed...

2023

Codes and Ciphers Simultaneous: Source Separation: PART II

Johan O. A. Robertsson, Dirk-Jan Van Manen, Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... be decoded. correlation between two (infinite) random sequences is zero whereas the autocorrelation is a spike. It is deterministically mapped onto known...

2016

Demultiple for Wide-Tow Broadband Acquisition in a Shallow Water Environment: A Case Study from the NW Shelf, Australia

Mike Hartley, Shuo Ji, Alex Browne

Petroleum Exploration Society of Australia (PESA)

... on an autocorrelation of the near trace data. Both methods of water-bottom picking were tested for this survey and results were very similar. Multiple Modelling...

2016

Application of high-end seismic imaging technologies for field development in NWS Australia

Min Lee Chua, Kai Zhao, Narcisa Lazarescu, Wai King Yong, Sergey Birdus, Alexey Artemov, Xiang Li

Petroleum Exploration Society of Australia (PESA)

... is the autocorrelation. Furthermore the simultaneous adaptive subtraction is done in the 3D curvelet domain: the sailline data (shot/channel/time) is transformed...

2019

Overview of Exploration Geophysics: Recent Breakthroughs and Challenging New Problems: Hydrocarbons

B. S. Flowers

AAPG Special Volumes

... autocorrelation. In either method of modeling, the periodicity and amplitude of the multiples change with time and distance, respectively. Moreover...

1976

3.2 Basement Involved: 3.2.1 Crustal Profiles: COCORP Deep Seismic Profiles Across the Wind River Mountains, Wyoming

AAPG Special Volumes

... with an operator of 560 msec was useful in removing some multiple energy, autocorrelation studies show that significant multiple reflections, generated wit...

1983

Overview of Exploration Geophysics--Recent Breakthroughs and Challenging New Problems

B. S. Flowers

AAPG Bulletin

... model derived from the periodicity of multiply reflected events through autocorrelation. In either method of modeling, the periodicity and amplitude...

1976

Abstract: Transmission Imaging: Moving Source Offset VSP (MSOVSP) Case Study; #90172 (2014)

Emmanuel Bongajum, Bernd Milkereit, Douglas Schmitt

Search and Discovery.com

... et al. (1988). ii) Transmission wavefield modeling and imaging We use the von karman autocorrelation function as described by Geoff & Jordan (1988...

2014

Abstract: Reflectivity Color Correction in Gabor Deconvolution; #90211 (2015)

Carlos Montana and Gary Margrave

Search and Discovery.com

...) The autocorrelation shows nonwhite character, evidenced by the presence of significant negative values at small lags. (c): The amplitude spectrum of the reflectivity...

2015

High-Resolution Variograms from Optical Borehole Imaging for Borehole-Scale Geostatistical Rock Simulation and Lattice Boltzmann Flow Simulation in High-Permeability Carbonates; #120091 (2013)

Michael C. Sukop and Kevin J. Cunningham

Search and Discovery.com

... with only slight anisotropy in the horizontal direction. The vertical variograms show strong short-range autocorrelation out to a lag of about 0.5 m...

2013

Linking Channel-Margin Bed Thickness to Hydrodynamics in the Tidally Influenced Fraser River, British Columbia; #50879 (2013)

Andrew La Croix, Shahin Dashtgard, and James MacEachern

Search and Discovery.com

... extends landward of turbidity max Seasonal Cyclicity in Fraser River IHS Autocorrelation, Fourier…   Qualitative cyclicity in structure...

2013

Statistical Appraisal of Molteno (Triassic) Sedimentary Cycles from the Upper Part of the Karroo (Gondwana) System in South Africa

B. R. Turner

Journal of Sedimentary Research (SEPM)

... is not feasible because of the unequal length of the series and the possibility of autocorrelation. Correlation therefore must be made in the usual geological...

1975

COMPOSITIONAL FIDELITY OF DEATH ASSEMBLAGES FROM A CORAL REEF-ASSOCIATED TIDAL-FLAT AND SHALLOW SUBTIDAL LAGOON IN THE NORTHERN RED SEA

MARTIN ZUSCHIN, CLAUDIA EBNER

PALAIOS

... composition) (Fig. 10). In the living fauna this is interpreted to reflect similar habitat preferences and possibly also spatial autocorrelation (Tomasovych...

2015

Transition–Zone Seismic Surveys in Southeast Asia

R. E. Sheriff, Palmer L. Greene, Harold Reaves

Indonesian Petroleum Association

... to be determined from analysis of the data themselves. Seiscom Delta's PULSE II program forms the autocorrelation of the wavelet shape by compositing...

1980

A dense linear array for passive seismic imaging of geothermal structural features: The FOAL experiment at Utah FORGE

Jaewoo Kim, Jonathan Ajo-Franklin, Tanner Shadoan, Valeriia Sobolevskaia, Julia Correa, Barry Freifeld

International Meeting for Applied Geoscience and Energy (IMAGE)

... autocorrelation (SPAC) quasi-3-D Vs model of Utah FORGE site with a dense geophone array: Geophysical Journal International, 225, 1605–1615, doi: https...

2023

Compositional Fidelity of Subfossil Mollusk Assemblages in Streams and Lakes of the Southeastern Pampas, Argentina

Eleonor Tietze, Claudio G. De Francesco

PALAIOS

... autocorrelation is an inevitability of the natural world, making ecological variables more similar the nearer they are measured along spatial gradients...

2012

Evaluation of oxygen isotope and Sr/Ca ratios from a Maldivian scleractinian coral for reconstruction of climate variability in the northwestern Indian Ocean

David Storz, Eberhard Gischler, Jens Fiebig, Anton Eisenhauer, Dieter Garbe-Schönberg

PALAIOS

..., when ordinary least square correlations are not significant. As two additional statistical methods, we applied autocorrelation functions...

2013

New Seismic Method in Populated Areas (A Case Study in the Surabaya Area, East Java, Indonesia)

Suyitno Patmosukismo, A. Syahbuddin, G. Alameda

Indonesian Petroleum Association

... of reflexion coefficients. ACFY(t): Autocorrelation function of the emitted sequence. The symbol * represents the convolution operator. If one...

1985

Application of Data Analytics for Production Optimization in Unconventional Reservoirs: A Critical Review

Srikanta Mishra, Luan Lin

Unconventional Resources Technology Conference (URTEC)

... (KM) - Models the response as a trend term with an autocorrelation structure, where neighboring observations have similar responses [10]  Self...

2017

The economic environment and the growth in reserves from known gas fields in the Gulf of Mexico

Kevin F. Forbes, Ernest M. Zampelli

CSPG Bulletin

... using fixed effects estimation. Reported standard errors are robust to heteroskedasticity and intragroup autocorrelation. The results for each...

2012

Three-Dimensional Seismic Modeling and Seismic Facies Imaging

Hongliu Zeng , Noel Tyler , Milo M. Backus

GCAGS Transactions

... autocorrelation at each grid node. The rock-properties of the shaly units and the total stratal thickness of each sand-shale pair were interpolated...

1995

Basin-Scale Geologic Clustering for Delaware Basin Type Curve Area Delineation: Operator Workflows and Applications

James Cassanelli, Edward Wolfram

Unconventional Resources Technology Conference (URTEC)

... at one point is not dramatically different from the geology at a nearby point (i.e., geology exhibits spatial autocorrelation). Therefore, it might...

2023

Field and Modelling Studies of Cambrian Carbonate Cycles, Virginia Appalachians: DISCUSSION

Michael G. Kozar, Lawrence J. Weber, Kenneth R. Walker

Journal of Sedimentary Research (SEPM)

... spectral analysis and autocorrelation analysis (Schwarzacher and Fischer 1982; Goldhammer et at. 1987). However, these methods are not easily applicable...

1990

Squeezing Every Last Drop Out of a Coarse 3D Oil Sands Dataset for Refining 3D Survey Design … A Case History; #41500 (2014)

Sylvestre Charles, Jim Hostetler, Jiwu Lin, Xiaoming Luo

Search and Discovery.com

... migration (60 fold). Figure 4. Test shot gathers and autocorrelation plots from a deep time window. Figure 5. COCA plots at two different locations: very...

2014

The Origin of High-Frequency Platform Carbonate Cycles and Third-Order Sequences (Lower Ordovician El Paso Gp, West Texas): Constraints from Outcrop Data and Stratigraphic Modeling

R. K. Goldhammer, P. J. Lehmann, P. A. Dunn

Journal of Sedimentary Research (SEPM)

..., we made time-series tests, both autocorrelation and maximum-entropy spectral analysis, on the cycle data; see Dunn (1991) for techniques. By time...

1993

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