Combined elastic FWI of accelerometer and DAS VSP data from a CO2 sequestration test site in Newell County, Alberta

Matthew Eaid, Scott Keating, Kristopher Innanen

International Meeting for Applied Geoscience and Energy (IMAGE)

... to those components of the wavefield which induce normal tangential strain in the fiber (e.g. the εtt component of the strain tensor in fiber coordinates...

Delineating Thin-Bed Tight Gas Sand Reservoir with Prestack Joint PP/PS Inversion, #41363 (2014)

Zhiwen Deng, Ming Qiang, Shuanghu Shi, Xiaofeng Liang, Yang Zhu, Yijun Zhou, Qingjia Tong

Search and Discovery.com

... Shear Wave Velocity Analysis For a single isotropic horizontal layer, the following double square root equation can accurately express the converted...

Abstract: Reverse Time Migration of Prestack Elastic Data; #90224 (2015)

R. Ferner and M. D. Sacchi

Search and Discovery.com

... of finite-difference solutions to the elastic wave-equation are well documented in geophysical literature. These finite-difference solutions model elastic...

Least Square Q-Kirchhoff Migration: Implementation and Application

Xiaodong Wu, Yi Xie, Joe Zhou, Dechun Lin, Yu Wang

Petroleum Exploration Society of Australia (PESA)

... with a relatively weaker Q (100-200, in blue colour) in background. Two sets of synthetic data are generated with our wave equation modelling, one using acoustic...

Links Between Suspended and Bed Load Sand Transport Rates on the Long Island Inner Shelf, New York, U.S.A.: Abstract

Christopher E. Vincent, Robert A. Young, Donald J. P. Swift

CSPG Special Publications

... outlined in Grant and Madsen (1979) to obtain the Shields’ Number ψ(t) for a combined wave current w(t) and steady current a, and the empirical equation...

Porosity Dependence on Temperature: Limits on Maximum Possible Effect

Lee P. Stephenson

AAPG Bulletin

...-Verrall equation (see caption, Fig. 4a) for initial porosity of 40%. Dashed part at left of upper curve corresponds to time-temperature coordinates...

A Field Investigation of the Relationship Between Oscillation Ripple Spacing and the Near-Bottom Water Orbital Motions

Martin C. Miller , Paul D. Komar

Journal of Sedimentary Research (SEPM)

... by the darkened symbols. The straight lines given in Figure 5 are based on equation (1), determined from the best fit to the laboratory wave flume and water...

Analysis of rank-reduction methods for filtering and interpolation

Rafael Manenti, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... at new spatial coordinates. One generally implements regularization by simplicity or sparsity-promoting norms on the frequency-wavenumber domain. Another...

Studies on Wind and Plant Interactions on French Atlantic Coastal Dunes

Catherine Bressolier, Yves-F. Thomas

Journal of Sedimentary Research (SEPM)

... profiles intersect at a special point called "focal point," the coordinates of which are given by: V = c log (Z/Z) + V where V and Z, a velocity...

Bedforms in Salt Deposits of the Dead Sea Brines

Iaakov Karcz, Israel Zak

Journal of Sedimentary Research (SEPM)

... in coordinates of c and of Vc/Vo, are in fair agreement with the quasi-theoretical equation of Kearsey and Gill (1963) for a cloud of quartz spheres settling...

Elastic Property Changes of Bitumen Reservoir duing Seam Injection

Search and Discovery.com

...140 160 T emperature (̊C ) Figure 2: P- and S-wave velocities of the oil sands as the function of temperature. Application of the Gassmann Equatio...

Analysis of Water-Level Rise Effects on Littoral Transport

C. R. Berquist , W. F Tanner

GCAGS Transactions

...% of the data. For ordinary gentle slopes, and for wave heights in the 30 to 60 cm range, a simple equation can be written in the form: x = ay - b, where y...

Application of thermal maturity driven elastic rock-physics model for marine Ordovician Goldwyer formation, Canning Basin

Partha Pratim Mandal, Rob Ross, Santosh Kuppens, Ask Jakobsen, Joel Sarout

International Meeting for Applied Geoscience and Energy (IMAGE)

... (equation 4) values into the differential effective media (DEM) model. We assumed spherical pores (e.g., pore aspect ratio of ~ 1). Supplied elastic...

Deep learning based wavefield separation method for VSP data

Gang Feng, Qin Su, Zhe Yang, Wei Yang, Jian-Hua Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavefield is used to calculate the quality factor, the spherical diffusion compensation factor, etc. This mutual interference of the upgoing...

X-Ray Diffraction Techniques Applicable to Studies of Diagenesis and Low Rank Metamorphism in Humic Sediments

George M. Griffin

Journal of Sedimentary Research (SEPM)

..." spacing) of parallel atomic planes within crystallites is determined readily by the location of peaks in the diffraction spectrum using the Bragg equation...

Utilizing Geochemical, Petrophysical, and Geomechanical Analysis to Optimize Stimulation Design in Pimienta Formation

Douglas J. Betancourt, Claudio Rabe, Omer Iqbal, Jesus P. Salazar, Besmir Hoxha

Unconventional Resources Technology Conference (URTEC)

... a 10-in. (25.4 cm) long by 1.5-in. (3.792 cm) cylindrical rock samples extracted from a drill cutter extractor and was cut into four identical pieces...

The Determination of Suspended Sediment Concentration in a Macrotidal System Using Landsat Data

C. L. Amos, T. T. Alfoldi

Journal of Sedimentary Research (SEPM)

... borne, visible wave-length remote sensing for generalized interpretation are given by Clarke and Ewing (1974), Thornburn (1974), and Gierloff-Emden (1976...

A Novel Approach for Production Transient Analysis of Shale Gas/Oil Reservoirs

Changdong Yang, Vishal Sharma, Akhil Datta-Gupta, Michael J. King

Unconventional Resources Technology Conference (URTEC)

... developed a novel formulation of the diffusivity equation to model pressure, rate, and production, especially for unconventional reservoirs...

Sediments of Great Salt Lake, Utah

A. J. Eardley

AAPG Bulletin

... of the spherical oolites and their mode of formation must be the same. The pellet is of bacilli-like form, and in the longer specimens strikingly cylindrical...

Abstract: The Prediction of Orthorhombic Differential Horizontal Stress Ratio for Shale Reservoir; #90308 (2017)

Ni Ma, Xingyao Yin, Zhaoyun Zong, Chengyu Sun

Search and Discovery.com

... together with elastic parameters like S-wave velocity and density. With this equation, we estimate the stress indicator (ODHSR) with S-wave velocity...

STAR--Structural Analogues for Reservoirs, by Fault Dynamics Research Group, #40264 (2007).

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Characterization of a Shallow Steamed Oil Reservoir Using Crosswell Seismology

Bjorn N. P. Paulsson, John W. Fairborn

Indonesian Petroleum Association

... a 25 msec. AEC and a 65-360 Hz bandpass filter. We found that this amount of processing, plus a rotation of coordinates into the P-wave polarization...

High-order viscoelastic prestack seismic nonlinear frequency-dependent inversion method based on scattering matrix

Tianjun Lan, Zhaoyun Zong

International Meeting for Applied Geoscience and Energy (IMAGE)

... equation based on scattering matrix is derived. Through accuracy analysis, it is verified that the newly obtained second-order viscoelastic reflection...

Tidal Modeling of an Ancient Tide-Dominated Seaway, Part 1: Model Validation and Application to Global Early Cretaceous (Aptian) Tides

Martin R. Wells, Peter A. Allison, Matthew D. Piggott, Gary J. Hampson, Christopher C. Pain, Gerard J. Gorman

Journal of Sedimentary Research (SEPM)

... has an appreciable impact on modeled tidal patterns. Use of spherical coordinates to avoid this distortion results in a “pole problem,” by which lines...

Temporal evolution of reservoir permeability in fault damage zones: An experimental approach

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