Finite-difference wavefield propagation using superstepping

T. Nemeth, K. Nihei, A. Loddoch, A. Sekar, K. Bube, J. Washbourne, L. Decker, S Kaplan, Ch. Wu, A. Shabelansky, O. Cristea, Z. Yin

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Theory A typical first-order system of equations with 2 state variables for wave propagation can be written in a matrix equation form as 𝐮̇ ...

Construction and Destruction at a Deepwater Slope Seabed: Implications for Reservoir Models in the Makassar Strait, Offshore East Kalimantan

Frank W. Musgrove, Rakhmadi Avianto, Rhys Schneider

Indonesian Petroleum Association

...-existing erosional canyons. However, the seismic data quality is not always optimal at reservoir depths. Multiples, scattering, and absorption often...

Hierarchical elastic velocities reconstruction with Eikonal-equation-based characteristic reflection traveltime tomography

Jianhua Wang, Jianming Zhang, Liangguo Dong, Yandong Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Finally, we summarize the findings of this approach. Theory The P-wave velocity v p and S-wave velocity vs are hierarchically inverted using PP- and PS...

Arcuate Structural Trends and Basin and Range Structures Based on a Study of ERTS-1 Imagery

Martha Ryder Smith

Utah Geological Association

...., Budapest. Cohenour, R.E. and Sharp, B.F., 1968, THE IMPACT THEORY; ASTEROIDS AND THE EARTH-MOON SYSTEM: Geo-Science News, v. 1, no. 3, p. 9–12. Cook, I.L....

Time-lapse full-waveform inversion strategies for Snowflake datasets acquired at Newell County Facility in Alberta, Canada

Hyeong-Geun Ji, Kristopher A. Innanen, Sea-Eun Park, Ju-Won Oh

International Meeting for Applied Geoscience and Energy (IMAGE)

...., S. Jang, and D. J. Min, 2001, Improved amplitude preservation for prestack depth migration by inverse scattering theory: Geophysical Prospecting, 49, no. 5...

A Method for the Size Analysis of Sand on a Number Frequency Basis

Arthur W. Marschner

Journal of Sedimentary Research (SEPM)

... was found to be best accomplished by scattering the grains over a concentrated area of graph paper. The horizontal columns on the graph paper were...

A prior regularized 3D full-waveform inversion using 2D generative diffusion models

Fu Wang, Tariq Alkhalifah, Xinquan Huang

International Meeting for Applied Geoscience and Energy (IMAGE)

... accurately capture the wave propagation phenomena, which includes geometrical spread- ing and out-of-plane scattering (Shin et al., 2014). Thus...

Full-waveform inversion from a homogeneous starting model: A field dataset study

Zeyu Zhao, Brook Tozer, Mrinal K. Sen

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Lailly, P., 1983, The seismic inverse problem as a sequence of before stack migrations: Conference on Inverse Scattering, Theory and application...

P-S Converted Wave AVO Analysis for Reservoir Characterization

Ehsan Sadeghi, Cepi Adam, Effendy Siawira, Hilfan Khairy

Indonesian Petroleum Association

... energy scattering, strong amplitude attenuations, push downs and discontinuities of underneath structural events. Figure 3-a clearly illustrates...

Direct Diffractometric Quantitative Analysis of Synthetic Clay Mineral Mixtures with Molybdenite as Orientation-Indicator: NOTES

Joost Quakernaat

Journal of Sedimentary Research (SEPM)

... minerals. THEORY Precise quantitative X-ray analysis of crystalline powder mixtures is based on comparison of intensities of representative...

Negative Production Factor Recognition and Separation from Other Pore Fluids with Advanced Logging Techniques: A Case Study from Junggar Basin

Zengbao Zhang, Xianbo Meng, Jianbo Lv, Pengpeng Yang, Liang Cai, Liu Zhong Li, Jin Long Wu, Xianran Zhao

Unconventional Resources Technology Conference (URTEC)

.... Inelastic and elastic scattering gamma energy spectra are obtained by controlling the emission time of pulsed neutrons, and then the relative contents...

Bottom Photographs of Black Sea

Allyn C. Vine

AAPG Special Volumes

... this is not observed on the majority of the photographs. Unfortunately, there was no nephelometer to measure vertical gradients of light scattering...

Selective Entrainment of Sediment Graded by Size and Density Under Waves

Matthew R. Tomkins, Peter Nielsen, Michael G. Hughes

Journal of Sedimentary Research (SEPM)

... amplitude A and orbital velocity amplitude A were calculated using appropriate wave theory (Dean and Dalrymple 2000). The grain roughness Shields...

Abstract: Mammoth Steps: an Overview of the Fauna of Wallys Beach (DhPg-8), a Late Pleistocene Locality from Southwestern Alberta; #90172 (2014)

Paul E. McNeil, Len V. Hills, Brian Kooyman, Shayne Tolman

Search and Discovery.com

...., 2001). Theory and/or Method Pleistocene animal tracks are rare worldwide. Wally’s Beach is the only known site in Canada. They provide...

Abstract: Full Waveform Inversion of Crosswell Seismic Data Using Automatic Differentiation; #90187 (2014)

Danping Cao and Wenyuan Liao

Search and Discovery.com

... on the accuracy and efficiency of the gradient computation. The adjoint state method has been introduced in the theory of inverse problems in the 1970s (Chavent...

Abstract: Environmental Integrated Sustainable Development During and After Mining of Sedimentary Rocks; #90187 (2014)

Carla I. Palencia

Search and Discovery.com

... by lumped models and VisualModflow. Theory and/or Method Evapotranspiration can be defined as the net water loss from the earth surface. The term...

Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)

Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli

Search and Discovery.com

... propagation is predominantly layer-parallel, resulting in less wave scattering [1]. It provides the lowest decay in the amplitude of events...

AAPG Foundation 2018 Grants-in-Aid Projects; - Abstracts, #90321 (2018).

Search and Discovery.com

Fast, Fully Probabilistic, Nonlinear Inversion of Seismic Attributes for Petrophysical Parameters; #120047 (2012)

Andrew Curtis, Mohammad Shahraeeni, and Gabriel Chao

Search and Discovery.com

... that velocity measurements in different directions using different frequencies (e.g. seismic data and well logs) require consideration of elastic scattering...

The Rawa Besar Lake Area (Depok, Indonesia) Study Using Ground Penetrating Radar; #80291 (2013)

Annisa Cinintia Finahsan and Supriyanto Suparno

Search and Discovery.com

..., this reflection or scattering of energy is caused by a contrast in the dielectric properties of material. The record shows the total travel time for the signal...

Abstract: NOAA's Waste-Disposal Studies in New York Bight, by G. L. Freeland, J. W. Lavelle, D. J. P. Swift, R. A. Young; #90968 (1977).

Search and Discovery.com

The Origin and Scale of Sequences and Erosional Bounding Surfaces in the Cardium Formation

Roger G. Walker

CSPG Special Publications

... a scattering of unusually coarse chert grains (up to about 2 mm diameter). These coarse grains are totally absent within the sequences, suggesting...

ABSTRACT: Gas production from shale: trends and research in the U.S.

L.F. Ruppert,, D.W. Duncan,, D.W. Houseknecht

The Society for Organic Petrology (TSOP)

..., but not limited to, small-angle neutron scattering, electron microscopy, TOC, X-ray diffraction, adsorption, permeability and porosity measurements, core...

Abstract: Biota and Biologic Processes of Continental Slope, by Gilbert T. Rowe, Richard L. Haedrich; #90961 (1978).

Search and Discovery.com

ABSTRACT: The characterization of organic matter pores in marine-continental transitional shales

Zhaodong Xi, Shuheng Tang, Ning Yang, Songhang Zhang

The Society for Organic Petrology (TSOP)

... pores have been studied mainly via scanning electron microscopy (SEM), gas adsorption, mercury intrusion, small-angle neutron scattering or computed...