Shallow VSP for Near-Surface Structure and Statics, #41535 (2015).

Soo-Kyung Miong, Robert R. Stewart, Joe Wong

Search and Discovery.com

... first-arrival time matches the observed firstarrival time with an error less than 1 ms. Depth and thickness of the velocity layers are assigned...

Imaging and fold comparison of mirror reverse time migration vs. interferometric imaging for VSP data

Liwei Cheng, James Simmons, Ali Tura

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The sensitivity to migration-velocity errors of different migration methods is also evaluated. Review of VSP data migration strategies Four different ray...

Defining a Steeply-Dipping Salt Flank in Mississippi with a New High-Certainty 3D Method

Nicholas Brooks, Pat Donais, Werner Heigl, Jakob Haldorsen, Fred Li

GCAGS Transactions

... is shown in Figure 3. The seismic source was a 60,000-lb vibrator with a linear sweep from 4 to 130 Hz. Figure 2. Plan and side view of the seismic...

Abstract: Kirchhoff Imaging in a Matrix Form. Part I: Modelling; #90174 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

...ight is added to matrix by replacement of ones with proper amplitude weights. By using a ray tracing program instead of DSR equation, this tech...

Recent Sediments of Lake Maracaibo

R. Sarmiento, R. A. Kirby

Journal of Sedimentary Research (SEPM)

... samples (fig. 20). Most of the observations fall close to the line representing Nafe's equation. Velocity and porosity.--There is a close relationship...

THE APPLICATION OF ROCK MECHANICS DATA TO HYDRAULIC FRACTURING IN THE CLINTON SAND*

James Wallace, Dowell Division of Dow Chemical, U.S.A., Tulsa, OklahomaJerry Hinkel, Dowell Division of Dow Chemical, U.S.A., Columbus, Ohio

Ohio Geological Society

...). If the load is increased, the deformation also increases. For small loads, and most rocks, this increase is linear...

Fast Gauss-Newton full-wavefield migration

Siamak Abolhassani, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

... parameters located at a given depth level. velocity model with sharp reflectors, we apply both FWM and GN-FWM in such a setup to evaluate...

From raw seismic data to quantitative interpretation via cloud-based FWI

Henry A. Debens

Australian Energy Producers Journal

..., providing reliable estimates of acoustic velocity at depths equivalent to or greater than the longest offsets available in the data – thereby enabling more...

Petrophysical Characterization of a Clastic Reservoir in the Middle Magdalena Valley Basin in Colombia Using Artificial Neural Networks and Seismic Attributes, #20440 (2018).

Ursula Iturraran-Viveros and Andres Munoz-Garcia,

Search and Discovery.com

...: spontaneous potential (SP), resistivity and induction (ILD), sonic log of P-wave. Some of these logs are more recent such as the Gamma Ray (GR), dipolar...

Fluid and Petrophysical Prediction in the Elastic Impedance Domain Using Neural Network Technique; #41066 (2012)

M. Hermana, M. Najmi, Z.Z.T. Harith, and C.W. Sum

Search and Discovery.com

... subtends to the negative B axis. The equivalent expression for equation (3) as EEI is: (5) where α = P-wave velocity, ρ = density, β = S-wave velocity, p...

Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

...lacing the elements by the calculated migration weight. If instead of using the DSR equation, we use a ray tracing program, this technique can be ext...

Velocity Analyses of Near Seafloor Strata Based on Multichannel Seismic Data from the Tonga Platform

Jeffrey E. Cole, Dennis M. Mann

Circum Pacific Council Publications

... to increase continuously with depth. By first picking the seafloor velocity peak, and bypassing the inversion layer, the interval velocities...

Improvements on airborne gamma-ray spectrometry inversion

Jessica D. Weihermann, Yaoguo Li, Saulo P. Oliveira, Francisco J. F. Ferreira, Adalene M. Silva

International Meeting for Applied Geoscience and Energy (IMAGE)

...Improvements on airborne gamma-ray spectrometry inversion Jessica D. Weihermann, Yaoguo Li, Saulo P. Oliveira, Francisco J. F. Ferreira, Adalene M...

PS reflection-based full-waveform inversion using single-mode propagator

Yongbo Zhai, James Xu, James Rickett, Peng Wang, Xin Cheng, Denes Vigh, Suyang Chen, Cara Smith

International Meeting for Applied Geoscience and Energy (IMAGE)

... an approximated S-wave equation. By employing different imaging conditions, we update both the high-wavenumber and low-wavenumber components of the S-wave velocity...

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

Seismic imaging in Tarim Basin: Overcoming complex near-surface conditions

Xianhuai Zhu, Ruirui Zhao, Sam Gray, Wensheng Duan, Duoming Zheng, Ganglin Lei, Gengxin Peng, Rujie Zhang, Kun Xu, Grace Yan, Junru Jiao

International Meeting for Applied Geoscience and Energy (IMAGE)

... panel shows the ray density. Figure 7. Depth slices of estimated velocity models using super-long-offset first arrivals at depths 900m and 2000m...

Karst topography paces the deposition of lower Permian, organic-rich, marine–continental transitional shales in the southeastern Ordos Basin, northwestern China

Xi Zhang, Xiaoming Zhao, Jiawang Ge, Shuxin Li, and Tingshan Zhang

AAPG Bulletin

... ray (GR), density (DEN), and acoustic (AC) logging data (D); seismic velocity (E); modal mineralogy (F); Sr/Ba, Ni/V, Ni/Co, and U/Th ratios (G); total...

Abstract: Salt Shape Tomography; #90254 (2016)

Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha

Search and Discovery.com

... contrasts on depth-migrated common image point gathers. In the multi-layer approach, the sharp velocity contrasts are introduced as layer boundaries. Using...

Abstract: Wave-Equation Propagation as a Body-Wave Filter, by Benjamin Witten and Brad Artman; #90105 (2010)

Search and Discovery.com

Considerations in Azimuthal Processing and Velocity Inversion for Unconventional Plays

Michael J. Perz, William Keller, Victor Kriechbaum

Unconventional Resources Technology Conference (URTEC)

...Considerations in Azimuthal Processing and Velocity Inversion for Unconventional Plays Michael J. Perz, William Keller, Victor Kriechbaum URTeC...

Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf

Vidar Storvoll, Knut Bjrlykke, Nazmul H. Mondol

AAPG Bulletin

... in sedimentary rocks as a function of sediment composition, porosity, pore-pressure, burial-history, and compaction processes. A first-order linear velocity-depth...

The calculation of first-arrival P-wave traveltime for attenuating TTI media

Mengxiu Wang, Jingyi Chen, Zhengcong Zhao, Kaiyuan Ji, Shaoying Chang

International Meeting for Applied Geoscience and Energy (IMAGE)

... part of complex-valued eikonal equation has the same form to the real eikonal equation in non-attenuating media. From the ray theory, the real part...

Abstract: Exact, Linear and Nonlinear AVO in Terms of Poroelastic Parameters; #90187 (2014)

Steven Kim and Kris Innanen

Search and Discovery.com

...Abstract: Exact, Linear and Nonlinear AVO in Terms of Poroelastic Parameters; #90187 (2014) Steven Kim and Kris Innanen AAPG Search and Discovery...

Multiparameter FWI imaging in the Gulf of Mexico

Tom Rayment, Karen Dancer, James McLeman, James Penwarden, Tim Ooi, Monica Hartmann

International Meeting for Applied Geoscience and Energy (IMAGE)

... the velocity model has provided an improvement in imaging compared to the conventional ray-based tomographic approach in this complex geological environment...

A Porosity Based Pore Pressure Estimation in an Indonesian Carbonate Reservoir

Sunawar Kunaifi, Krishna Pratama Laya, Sarvagya Parashar, Luqman, Banu Andhika

Indonesian Petroleum Association

.... 𝑉 = 𝑎(𝑅𝑍) Where: a R Z (Eq. 7) Vp = P-wave Velocity (ft/sec) = Correlation constant = Resistivity (ohm. ft) = Depth (ft) Using the correlation constant...