Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... predictions based on ray considerations only. This aspect is investigated using wave equation modelling. The effect on the reflection time curve...

Abstract: Q-estimation from Uncorrelated Vibroseis VSP Model Data; #90172 (2014)

Arnim B. Haase

Search and Discovery.com

... Vibroseis data. Once velocity dispersion is known, Q-factors are computed with the aid of a well known velocity dispersion equation. How does...

Abstract: Simple Wavefield Modelling to Evaluate the Low Frequency Artifacts in Reverse-Time Migration; #90224 (2015)

John C. Bancroft

Search and Discovery.com

... to eliminate spherical divergence. The wavefield was propagated using a two-way finite difference solution to the acoustic wave equation 2P 1 2P...

Heavy Oil Reservoir Characterization by Time-lapse Seismic and Rock Physics in a Cold Production Reservoir; #41448 (2014)

Naimeh Riazi, Laurence Lines, Brian Russell

Search and Discovery.com

... for heavy oils, the seismic wave velocity and density of the reservoir is altered and this provides the opportunity to monitor the reservoir parameter...

Mitigating cycle skipping in FWI through preconditioned multidimensional optimal transport

James McLeman, Tim Burgess, Tom Rayment, Victor Chua

International Meeting for Applied Geoscience and Energy (IMAGE)

... Shelf of Australia. Introduction FWI seeks to minimize differences between the observed data and data modelled using the wave equation with initial...

Exploiting a Priori Model Reduction Methods to Accelerate Seismic Simulations, #42038 (2017).

David Modesto, Josep De La Puente

Search and Discovery.com

... strategy to the usual practice. More precisely, the wave field is generalized to provide any particular solution of the seismic problem at negligible...

Supporting Oil Drilling Rigs in Indonesian Swamps

Paul M. Reed, Johannes Karundeng

Indonesian Petroleum Association

... on previous experience, is to determine resistance by dynamic formulas. The most reliable one is the wave equation. Fig. 8 shows how this method models...

High-Density Mud Suspensions and Cross-Shelf Transport: On the Mechanism of Gelling Ignition

Jochen Kämpf, Paul Myrow

Journal of Sedimentary Research (SEPM)

.... From this erosion rate, and using Equation 9 with h*  =  0.05 m, we can roughly estimate that Cb would increase by 0.23 kg m−3 during a wave period...

Combined P and S Waves Survey for Hydrocarbon Exploration

Basuki Puspoputro

Indonesian Petroleum Association

... change shape but not the volume (Robinson 1983, Domenico and Danbom 1987). The equation for the P-wave velocity Vp and S-wave velocity Vs may...

Abstract: Rock Physics Modeling in Montney Tight Gas Play; #90224 (2015)

Ayato Kato, Kunio Akihisa, Carl Wang, and Reona Masui

Search and Discovery.com

...-prediction on S-wave velocity. The model is also utilized to investigate influences of petrophysical paramters on elastic properties. In the Montney formation...

Abstract: Seismic Behaviour of CO2 Saturated Fontainebleau Sandstone Under In Situ Conditions; #90174 (2014)

Mizanul Huq Chowdhury and Douglas R. Schmitt

Search and Discovery.com

... and supercritical phases of the CO 2. This situation is most likely in the uppermost kilometer of most sedimentary basins. P- and S-wave velocities were...

Abstract: Testing the Viability of the Sharpe Hollow Cavity Model in Modelling Explosive Pressure Sources; #90187 (2014)

Christopher C. Petten and Gary F. Margrave

Search and Discovery.com

... a theoretical perspective since wave motion in this region cannot be predicted by the linear wave equation. The SHCM introduced by Joseph Sharpe in the late...

Lomnitz Law Versus Elasticoviscous Controversy

Paul S. Wesson

AAPG Special Volumes

..., coupled with the wave equation, only accounts for constant Q in the range 10-8 to 1 Hz, McCann (1970) maintained End_Page 454...

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...

Time-lapse full-waveform inversion by model order reduction using radial basis function

Haipeng Li, Robert G. Clapp

International Meeting for Applied Geoscience and Energy (IMAGE)

... the optimization method to fit the observed seismic waveforms with the synthetic data calculated from the wave equation, given certain prior information...

Carbonate Reservoir Characterization Using the Cementation Factor: A Case Study of Little Cedar Creek Field, Onshore Alabama

Qifei Huang, Yuefeng Sun

GCAGS Journal

.... The seismic signatures of three carbonate pore types are modeled by solving Zoeppritz equation and applying elastic wave fine-element-method. AVO for fluid...

Abstract: Methods in Estimating Visco-Elastic Properties for Gas Cloud Imaging : A Multicomponent Seismic and Rock Properties Analysis (Geophysics Poster 6)

Ang Chin Tee, M Hafizal Mad Zahir

Geological Society of Malaysia (GSM)

... Figure 1). Through Athy’s equation, the reconstruction of P-wave and S-wave velocities and density trends can be done to predict the normal compaction...

Spherical Wave Model Tests of VSP-Based Q-Estimation Techniques

Search and Discovery.com

...Spherical Wave Model Tests of VSP-Based Q-Estimation Techniques Spherical Wave Model Tests of VSP-Based Q-Estimation Techniques Arnim Haase...

Abstract: The Design and Application of Converted-wave COVs; #90187 (2014)

Richard Bale, Tobin Marchand, Keith Wilkinson, and Jeff Deere

Search and Discovery.com

...Abstract: The Design and Application of Converted-wave COVs; #90187 (2014) Richard Bale, Tobin Marchand, Keith Wilkinson, and Jeff Deere AAPG Search...

Forward Modeling of Seismic Data: Part 7. Geophysical Methods

George Mellman, Paul A. Kunzinger

AAPG Special Volumes

..., again with approximations, but with significant time savings. There are two classes of seismic modeling: ray tracing and wave equation methods...

EXTENDED ABSTRACT: Sub-basalt imaging from a wave propagation point of view; #90022 (2002)

Richard Hobbs, Francesca Martini

Search and Discovery.com

... boundaries. A simpler alternative approach is the use of wave-equation based datuming. This method replaces complex layers with smoother homogeneous layers...

Derivation of Seismic Depth Sections

H. Buchholtz, W. Houba

Geological Society of Malaysia (GSM)

... for the wave equation migration of seismic data leading to more reliable depth sections. The effectiveness of the method is illustrated by a sequence...

Depths of Modern Coastal Sand Clinoforms

Neil C. Mitchell, Gerhard Masselink, John M. Huthnance, Luis M. Fernandez-Salas, Francisco J. Lobo

Journal of Sedimentary Research (SEPM)

... L is the wavelength calculated using the linear wave dispersion equation: Shoaling effects on Hs were ignored given that the rollovers...

The Combined Effects of Wave Motion and Tidal Currents on the Morphology of Intertidal Ripple Marks: The Wash, U.K.

C. L. Amos , M. B. Collins

Journal of Sedimentary Research (SEPM)

... In order to simplify the analysis, the mean values of A/T, derived in Equation 2, were calculated for each wave type (see Fig. 4). The mean A/T value...

Intertidal Sedimentary Structures on Macrotidal Beaches

Nathan Hawley

Journal of Sedimentary Research (SEPM)

... the southeast which severely affected Oxwich beach, and the storm of the year, which lasted three days (April 1-April 3). Since wave energy, E (see equation...