Finite Difference Modeling: Part II: How to clean numeric time dispersion

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... with the same velocity. Velocity (m/s) 2050 2040 2030 2020 2010 2000 10 20 30 40 50 60 Frequency (Hz) Figure 1: The wave speed in the physical...

Rock Physics Study of Coal Bed Methane Reservoir Rock: Case Study of Muaraenim Coal

Bagus Endar B. Nurhandoko, Susilowati, Usep M. Ishaq, Hussein Rudiyanto, Y. Wiyanto, Budi Sulistyanto, Mahatman L. Budi, Kaswandhi Triyoso, KiskoRiondo Siahaan, Wahyu E. Abdillah, Danang Kusudiharjo

Indonesian Petroleum Association

... physics measurementwill produce first arrival time which can be converted to velocity, either Pwave or S-wave velocity. By combining the velocity...

P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data

Sangmyung D. Kim, Seiichi Nagihara, Yosio Nakamura

GCAGS Transactions

...P- and S-Wave Velocity Structures of the Sigsbee Abyssal Plain of the Gulf of Mexico from Ocean Bottom Seismometer Data Sangmyung D. Kim, Seiichi...

Elastic Wavefield Seismic Stratigraphy, by Bob A. Hardage and I.J. Aluka, #40184 (2006).

Search and Discovery.com

Modified Residual Migration

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

...: Removing the restrictions on depth-varying velocity: Geophysics, 53, 881–893. Black, J., and Brzostowski, M., 1990, High-dip time migration: 60th Ann...

Relationships Between Wave-Induced Currents and Sediment Grain Size on a Sandy Tidal-Flat

G.C. Malvarez, J.A.G. Cooper, D.W.T Jackson

Journal of Sedimentary Research (SEPM)

... environments: Sedimentary Geology, v. 80, p. 139-150. FIG. 7. Graph showing the correlation coefficients between wave orbital velocity and sediment grain...

Reservoir Rocks Behaving Differently

Thomas Smith

GEO ExPro Magazine

... conventional data processing, which does not realize the existence of this wave and does not account for its lower velocity in the reservoir rocks, its...

Application of acoustic anisotropic time-lapse full-waveform inversion at the Sleipner Field

Sea-Eun Park, Alexey Stovas, Hyeong-Geun Ji, Ju-Won Oh

International Meeting for Applied Geoscience and Energy (IMAGE)

... is also crucial. One simple anisotropic model is an acoustic elliptical anisotropy, in which only P-wave velocity and epsilon (ε) are considered. Xu...

Abstract: Tau-P Seismic Data Processing: Fast Slant Stack Using the Hartley Transform

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... trace. In this aspect slant stacking provides a computational procedure to compose and decompose wave expansions of the data. For example, a VSP section...

Two Controls of Sand-Wave Size: Dynamic Equilibrium Processes and Kinematic Depositional-Erosional Processes: ABSTRACT

David M. Rubin

AAPG Bulletin

... is controlled primarily by flow velocity, depth, and sediment size. Equilibrium sand-wave height and wavelength increases with flow velocity...

Abstract: Wave Equation Solutions to Complex Near Surface Challenges, by L.L. Hu, S. Saleh, J.W. Jiao, R. Ley, and L. Wong, #90188 (2014)

Search and Discovery.com

Salt-Related Converted-Wave Identification and Attenuation - Offshore Egypt, Mediterranean Sea

Search and Discovery.com

Abstract: Poisson's Ratio of Water Saturated Alluvium in Penang from Shallow Seismic Refraction

Leong Lap Sau, Lim Teck Kean, Md. Anuar Razali

Geological Society of Malaysia (GSM)

... of P and S-wave velocities in depth estimation affords a more stringent control in the presence of intermediate velocity layers, especially in water...

Improved channel imaging using full-waveform inversion for deepwater Lingshui giant gas reservoir in South China Sea

Tao Wu, Dun Deng, Zijing Gong, Jie Cui, Rong Li, Lianlian Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... offset, it is challenging for FWI to update velocity at a deep target zone with diving wave only. Therefore, all reflection information is included...

Velocity Dispersion and Attenuation in Vibroseis Data

L. Flora Sun

Search and Discovery.com

... noise may also be in the background. Here we only measure velocity dispersion in the direct downgoing wave in VSP data. AAPG Search and Discovery...

Velocity Dispersion and Attenuation in Vibroseis Data

L. Flora Sun

Search and Discovery.com

... noise may also be in the background. Here we only measure velocity dispersion in the direct downgoing wave in VSP data. AAPG Search and Discovery...

Seismic Anisotropy Modelling and Fluid Substitution for Carbon Dioxide (Co2) Well Storage Project In Carbonate Reservoir

Pebrian Tunggal Prakosa, Thariq Guntoro, Ahmat Dafit Hasim, Okok Wijaya, Yulia Putri Wulandari

Indonesian Petroleum Association

.... The seismic response of a reservoir directly controled by the compressional (P-wave) and shear (S-wave) velocity or in this paper written as Vp and Vs...

Ripple Marks as an Aid in Determining Depositional Environment and Rock Sequence

O. F. Evans

Journal of Sedimentary Research (SEPM)

... are large, and if the ripples have been formed under conditions of uniform depth of water and a constant direction and velocity of water current or wave...

High-resolution near-surface land FWI across the Delaware basin fill zone

Terence Krishnasamy, James Sheng, Ronaldo Florendo, James Beck, Antonio Sierra, Sam Murphy, Jay Siebens, Yvonne Iwo-Brown

International Meeting for Applied Geoscience and Energy (IMAGE)

...-surface velocity updates. Typically, a diving-wave or first arrival tomographic approach is used to update these shallow depths. Though useful...

The Influence of Fine-Grained Sediments on Wave Propagation, West Louisiana Coast

Sheremet, A., Stone, G. W., Walker, N. D., Roberts, H. H., Huh, O. K., Hsu, S. A., Inoue, M., Rouse, L., Welsh, S., and Bentley, S.

GCAGS Transactions

... that provides a comprehensive suite of observations including wave, current, wind velocity, air pressure, and temperature; see Stone (2001...

Abstract: Converted-Wave Statics Estimation from a PS-Receiver-Stack Image; #91204 (2023)

Yimin Sun, Mohammed Mubarak, Victor Dolgov

Search and Discovery.com

...Abstract: Converted-Wave Statics Estimation from a PS-Receiver-Stack Image; #91204 (2023) Yimin Sun, Mohammed Mubarak, Victor Dolgov Converted-Wave...

Application of Seismic Surveying to Direct Exploration for Oil and Gas

A. M. Ivanchuk, L. F. Tarkhova

Petroleum Geology: A Digest of Russian Literature

...-bearing strata on attenuation and velocity of seismic waves. Field studies have shown that the decrease in velocity of propagation at pools reaches...

A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and Discovery.com

..., both of which are numerical solutions to the wave equation. These two categories are the integral methods (including Kirchhoff and beam techniques...

Optimized downward continuation for the one-way wave equation in TTI media

Cosmin Macesanu, Faqi Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... (FFD) method used in the one-way wave equation. Errors associated with FFD can be magnified in media with strong lateral variations in velocity...

Characterization of a Sediment Core from Potential Gas-hydrate-bearing Reservoirs in the Sagavanirktok, Prince Creek, and Schrader Bluff Formations of Alaska's North Slope: Part 5Acoustic Velocity Core Studies

R. F. Sigal, C. Rai, C. Sondergeld, B. Spears, W. J. Ebanks Jr., W. D. Zogg, N. Emery, G. McCardle, R. Schweizer, W. G. McLeod, J. Van Eerde

AAPG Special Volumes

... is 2170 m/s (7119 ft/s). No significant shear-wave anisotropy was observed. The trend of decreasing velocity with increasing temperature is weak. Based...