An Analysis of a Seismic Reflection from the Base of a Gas Hydrate Zone, Offshore Peru (1)

JOHN J. MILLER , MYUNG W. LEE , and ROLAND VON HUENE

AAPG Bulletin

... sequence included automatic gain control (AGC), spiking deconvolution, migration before stacking, and detailed velocity analysis (for both stacking...

Machine learning-based anisotropy characterization of Wolfcamp shales in the Midland Basin

Jaewook Lee, David E Lumley

International Meeting for Applied Geoscience and Energy (IMAGE)

..., similar to inorganic minerals in shale formations. Therefore, the improved estimation of both Swave velocity and anisotropic parameters is needed...

The Fabric, or Internal Structure, of Rocks … The Patterns of Anisotropy; #42188 (2018)

Heloise B. Lynn

Search and Discovery.com

... laterally and/or vertically. For example, the P-wave velocity (VP), the shear-wave velocity (VS) and density – the three primary characteristics we seek...

Gas Hydrate Geohazard Assessment in the Northern Gulf of Mexico Using a Vertical Line Array, by Erika Géresi, N.R. Chapman, T.M. McGee, and J.R. Woolsey, Article #40159 (2005)

Search and Discovery.com

Passive Margins: Eroded Carbonate Platform Margin--The Blake Escarpment off Southeastern United States

William P. Dillon, Anne M. Trehu, Page C. Valentine, and Mahlon M. Ball

AAPG Special Volumes

... velocity zones, however, causes the first arrival hyperbolae from various layers to cross, which will distort and smear the data when normal moveout...

Joint inversion of first-arrivals with full waveform inversion: improving the near-surface model for depth imaging the Marcellus shale of Bradford County, PA

Search and Discovery.com

Niobrara Surface Seismic Data - Resolution Enhancement and Reservoir Characterization Through Wavefield Re-Datuming and Inversion

Search and Discovery.com

Using Multiazimuth Seismic Data for Anisotropy Estimation in an Unconventional Reservoir

Surabhi Mishra

Petroleum Exploration Society of Australia (PESA)

... in the overburden layers, then the azimuthal variation in the stacking velocity and the amplitude will have the overburden anisotropy interference. In order...

Image - Rays and the Treatment of Inhomogeneity in Migration

L. Hatton

Southeast Asia Petroleum Exploration Society (SEAPEX)

... of Levin (1971), it is known that the stacking velocity of the dipping event 4 is increased over the migration velocity (~V3) by the inverse...

High-Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full-Waveform Inversion: an Offshore Australia Case Study

Bee Jik Lim, Denes Vigh, Stephen Alwon, Saeeda Hydal, Martin Bayly, Chris Manuel, Dimitri Chagalov, Gary Hampson, Dimitri Bevc

Indonesian Petroleum Association

... velocity, Vp, remained fixed while epsilon was updated to further decrease the residual moveout on the gathers; the results are shown in Figure 7. The last...

Seismic Data Acquisition and Processing in the Midway-Sunset Oil Field

C. R. Willingham, A. S. Wylie Jr., D. J. Underwood

Pacific Section of AAPG

...: 0.700 to 2.200 seconds Velocity analysis Automatic residual statics Gate: 0.400 to 2.800 seconds Dip Moveout Velocity analysis Pre-stack...

Illuminating Fine Scale Geology and Creating Robust Seismic Attributes Using High Trace Density Seismic Data in the Midland Basin

Andrew Lewis, Bruce Karr, Ron Bianco, Stonnie Pollock

Unconventional Resources Technology Conference (URTEC)

.... (1999, July-August). 3-D moveout inversion in azimuthally anisotropic media with lateral velocity variation: Theory and a case study. Geophysics, 64...

Measuring seasonal velocity variations on an urban DAS array

Jihyun Yang, Jeffrey Shragge

International Meeting for Applied Geoscience and Energy (IMAGE)

... apparent moveout velocity (∼220 m/s) of (presumably) Rayleigh waves is consistent with near-surface geologic materials that are expected to be Quaternary...

1.5 Crustal Sections: A Wide Angle Seismic Profile

V. J. Hughes, R. S. White, E. J. W. Jones, D. H. Matthews, J. A. Brewer, and D. K. Smythe

AAPG Special Volumes

... structure. Although moveout of the arrivals across the array gives an estimate of the seismic velocity, this is usually reasonably well constrained...

Prestack inversion and amplitude variation with offset attributes as hydrocarbon indicators in carbonate rocks: A case study from the Illinois Basin

Jacob T. Murchek, Paul McColgan, Lindell C. Bridges, Ernest C. Hauser, and Doyle R. Watts

AAPG Bulletin

... of nonproductive, tight dolomite along the North Vernon interval. Low-impedance, low P-wave velocity/S-wave velocity ratio zones that correlate directly...

An Interpreters Guide to Successful Prestack Depth Imaging; #41544 (2015)

Rob A. Holt

Search and Discovery.com

... communication, timely sharing of information, a suitable velocity and anisotropy strategy, and proactive Quality Check (QC). The success of the project can...

Bigger is Better … Hydraulic Fracturing in the Williams Fork Formation in the Piceance Basin

Leen Weijers, Yusuf Kama, Julie Shemeta, Stephen Cumella

Search and Discovery.com

... rates, microseismic-moment magnitudes, stacking of tools (Shemeta et al., 2009). For this simultaneous operations project, hearing distances...

Seismic Anisotropy Modeling from Well Log in Talang Akar Formation, South Sumatra, Indonesia; #41360 (2014)

Thariq Guntoro, Intan Andriani Putri1, and Dwa Desa Warnana

Search and Discovery.com

..., 1980, Quantitative seismology: Theory and methods: W.H. Freeman and Co., 700 p. Alkhalifah, T., 1997, Velocity analysis using nonhyperbolic moveout...

3D surface-consistent residual statics estimation by deep learning

Han Wang, Jie Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... maximization associated with stacking velocity analysis. However, 3D velocity analysis is time-consuming and the massive number of trace correlations...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

..., A., and Osypov, K., 1999, Unconstrained near-surface velocity inversion of linear moveout velocities and its impact on structure mapping: 69th Ann. Internat...

Angle Gathers for Gaussian Beam Depth Migration, #41593 (2015).

Samuel Gray

Search and Discovery.com

... velocity estimation based on moveout on CIG’s indexed by offset can be simple or complicated. Its simplest form is trial-and-error based on the knowledge...

Elastic Anisotropy of Shales ƒ Revisited; #41557 (2015)

Marina Pervukhina, Patrick N. J. Rasolofosaon

Search and Discovery.com

...) velocity for propagation in the horizontal direction. The third parameter , that is to say the P‐wave moveout parameter, is roughly equal to the relative...

The Role of Regional Seismic Surveys in the Exploration of the North West Shelf

J. Ostby, C. Johnston

Petroleum Exploration Society of Australia (PESA)

... velocity stacking (Hampson, 1986; Russell et al., 1990) where reflection or primary events and/or multiples are w WATER BOTTOM Figure 2: Multiple...

Chapter Five: Reservoir Identification

Alistair R. Brown

AAPG Special Volumes

... offsets to improve signal-to-noise ratio. Common-depth-point gathers corrected for normal moveout but without any stacking are shown in Figure 5-48...

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... filter with corner frequencies of [1 5 10 15] Hz. The best-fit line corresponds to a moveout velocity of nearly 6200 m/s which is in agreement with the P...