Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

Search and Discovery.com

..., (3) not direction-wise orthagonal to front tangent planes; (4) and, velocity or slowness magnitudes along loci directions differ from those in front...

Anisotropy Kinematics Clarified through Regime Rrays Model

William J. Vetter

Search and Discovery.com

..., (3) not direction-wise orthagonal to front tangent planes; (4) and, velocity or slowness magnitudes along loci directions differ from those in front...

II. Information Content and Resolution Potential of Seismic Data.

Norman S. Neidell

AAPG Special Volumes

... In the preceding figure we see that in time the propagation wavefront will strike the entire boundary and not just a single point. According to Huygen's...

CRS-Stack and NIP-Wave Tomography Implemented to the SH-Wave Reflection Seismic Data for Shallow Hydrocarbon Prospecting (Paper P30)

M. R. Sule, A. A. Valencia, A. Hendriyana, U. Polom, C. M. Krawczyk

Geological Society of Malaysia (GSM)

..., and radius of curvature of NIP wavefront, RNIP), are then used Implementation of partial CRS-stack method as input data for velocity-depth determination...

UNDERSTANDING THE FRESNEL ZONE

Search and Discovery.com

VSP: Lessons from Numerical Simulation

M. Suprajitno, S. A. Greenhalgh

Indonesian Petroleum Association

.... The upgoing waves (reflections) are characterised by a negative apparent velocity i.e. time increases with decreasing depth. Note how the upgoing primary...

Envelope full-waveform inversion of marine seismic data

Kai Xiong, David Lumley, Wei Zhou

International Meeting for Applied Geoscience and Energy (IMAGE)

... velocity (Vp) with 2D acoustic FWI and IEI. Figure 3a shows the initial velocity model obtained from migration velocity analysis (MVA). The shot position...

Seismic diffractions separation and imaging based on convolutional neural network

Jiaxing Sun, Jidong Yang, Zhenchun Li, Jianping Huang, Jie Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

... using one pass of seismic modeling and migration for velocity models with and without artificial scatterers. Then, a simplified end-to-end CNN...

Imaging Beneath Gas - A Prestack Depth Migration Case Study (Paper 34)

Osman Khan, Uwe Klein-Helmkamp, Peter Whiting, Tim Chapman

Geological Society of Malaysia (GSM)

... to comprehend local lateral velocity variations, and interpretation of seismic data in the depth domain. This paper presents a case study from offshore...

Constraints on Eolian Grain Flow Dynamics Through Laboratory Experiments on Sand Slopes

Richard R. McDonald , Robert S. Anderson

Journal of Sedimentary Research (SEPM)

..., and then steadily decreased to  10 cm/s towards the tail of the flow. The longitudinal velocity gradients created considerable longitudinal strain rates...

Time-lapse processing and imaging of the Snowflake 3D DAS VSP CO2 monitoring dataset

Xiaohui Cai, Kristopher A. Innanen, Qi Hu, Ziguang Su, Donald C. Lawton

International Meeting for Applied Geoscience and Energy (IMAGE)

... technologies. RTM is a powerful depth migration technique used to create high-resolution images of complex subsurface structures (e.g., Baysal et al...

Beam Migration for Imaging of Complex Structures

Karl Schleicher, John Sherwood, Lynn Comeaux, Mazin Farouki

Indonesian Petroleum Association

... and its associated migration properties enables a very limited wavefront Kirchhoff migration contribution to a 3D migrated depth volume (x,y,z...

Finite-difference wavefield propagation using superstepping

T. Nemeth, K. Nihei, A. Loddoch, A. Sekar, K. Bube, J. Washbourne, L. Decker, S Kaplan, Ch. Wu, A. Shabelansky, O. Cristea, Z. Yin

International Meeting for Applied Geoscience and Energy (IMAGE)

... with the combination of material properties (such as velocity or density) in a pattern described by the FD kernel. The accuracy, stability...

Novel Land and Marine Solutions Including Time-Lapse Using High Resolution Multi-Transient EM

Folke Engelmark

Indonesian Petroleum Association

... sampling in relation to target depth, and to achieve the necessary S/N at target levela in the shortest possible time given a particular source...

Multiple Aliasing Problems in Marine Data

P. Chia, C. O. Kuek, P. Ward, K. S. Lee

Geological Society of Malaysia (GSM)

...: Series of linear, steep noise have frequently been observed on post-stack marine data. Such aliased noise is closely associated with data acquired...

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)

... quality due to higher attenuation of P-waves, wavefront distortion which caused by low velocity distribution within the gas bodies and transmission...

Microseismic imaging with three-component borehole sensors

Jakob B. U. Haldorsen

International Meeting for Applied Geoscience and Energy (IMAGE)

... microseismicity. WAVEFIELD DECOMPOSITION Consider a function a(tn, xm ), measured at times tn = (n−1)∆t, by a linear array of M sensors at regularly spaced...

An acoustic wave equation with the gradients of velocity and density

Jianyong Bai, Orhan Yilmaz

International Meeting for Applied Geoscience and Energy (IMAGE)

...An acoustic wave equation with the gradients of velocity and density Jianyong Bai, Orhan Yilmaz An acoustic wave equation with the gradients...

On the absorbing boundaries to replicate semi-infinite half-space in numerical seismic analyses using the finite element method

Tyler R. Hebert, James M. Bryce, Arka Prabha Chattopadhyay

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the framework of the FEM formulation of the transient wave propagation in monolithic and multi-material linear elastic domains. We test three different methods...

Improve Kirchhoff depth imaging using full-wave-equation traveltimes

Yongzhong Wang, Yang He, Alex Yeh, Faqi Liu, Bin Wang, Carlos Caldern

International Meeting for Applied Geoscience and Energy (IMAGE)

... Full waveform inversion (FWI) has become the main workhorse to derive highly accurate velocity models and is applied in nearly every depth imaging...

Geothermal exploration at Kijiyama KJ-5 hot geothermal borehole in Northeastern Japan using DTS and DAS

Junzo Kasahara, Yoko Hasada, Masaru Suzuki, Tomohiro Takahashi, Hitoshi Mikada, Hiroshi Ohnuma, Yoshihiro Fujise

International Meeting for Applied Geoscience and Energy (IMAGE)

... is parallel to the S wavefront, i.e., perpendicular to their propagation direction, the S wave velocity may be slower, and Vp/Vs may exceed 1.75 if fluid...

Seismic Acquisition Optimization for Exploration in Thrust Belts and Foreland Basins; #42268 (2018)

Pedro Muñoz, Juan Uribe, Nestor Sanabria

Search and Discovery.com

...-Linear Primary-Multiple Separation with Directional Curvelet Frames: Geophysical Journal International, v. 170, p. 781-799. Jiang, T., B. Gong, F. Qiao...

Permafrost Studies in the Norman Wells Region, Northwest Territories

P. J. Kurfurst, R. M. Isaacs, J. A. Hunter, W. J. Scott

CSPG Special Publications

... for constructing uphole wavefront diagrams. Since a frozen active layer with a high velocity overlying unfrozen material with a low velocity constitutes...

Seismic Diffraction Imaging of Reservoir Fractures with DAS Seismic Data in a Horizontal Well

Brian Fuller

Unconventional Resources Technology Conference (URTEC)

... modeled for three different positions in a constant velocity medium of 10,000 ft per second, at a horizontal DAS cable depth of 8,800 ft...

Common Reflection Surface (CRS) Stack: Limitations and Opportunities for High-Resolution Seismic Imaging; Real Data Cases

M. S. Jaya, E. A. Sentani, Yendri, Widjonarko, D. Santoso

Indonesian Petroleum Association

... wavefield attribute sections that are useful in further processing such as tomographic velocity model inversion and depth migration processing...