Seismic Modeling of Acid-Gas Injection in a Deep Saline Reservoir

Search and Discovery.com

... Gassmann’s equations, the traveltime difference is seen to be on the order of a quarter millisecond for each 10 m thickness of the acid-gas plume...

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

Search and Discovery.com

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

Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)

Emil Blias

Search and Discovery.com

... NMO curves for several (picked) horizons that will be used in non-linear traveltime inversion. 2. Analytical NMO inversion to create a zero...

A cross-shape deep Boltzmann machine for petrophysical seismic inversion

Son Dang Phan and Mrinal K. Sen

AAPG Bulletin

... traveltime. In detail, reconstructed angle gathers, porosity, and water saturation well overlay the real values at all visible events, with minor...

Wave equation traveltime Kirchhoff with real data applications

Hu Jin, Vladimir Bashkardin, Petr Jilek, Chandan Kumar, Han Liu, John Etgen, Madhav Vyas, Ganyuan Xia

International Meeting for Applied Geoscience and Energy (IMAGE)

...Wave equation traveltime Kirchhoff with real data applications Hu Jin, Vladimir Bashkardin, Petr Jilek, Chandan Kumar, Han Liu, John Etgen, Madhav...

Time-lapse crosswell seismic monitoring of CO2 injection at the Nagaoka CCS site using elastic full-waveform inversion

Rie Nakata, Nori Nakata, Aaron Girard, Masaru Ichikawa, Ayato Kato, David Lumley, Zique Xue

International Meeting for Applied Geoscience and Energy (IMAGE)

... conducted to delineate the subsurface changes within a few hundred meters from the injection well. As the acquisition is optimized for traveltime...

Mozambique Upper Fan: Origin of Depositional Units

L. Droz, D. Mougenot

AAPG Bulletin

... down-stream region, with a north-south channel flanked by thick (1.5 sec two-way traveltime) asymmetric levees, and a migrating upstream region where...

Seismic applications of the Radon transform and a new second-order traveltime local transform

Ehsan Soleymani, Mauricio Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

.... In contrast, 1(b) is the approximated curve based on the two-term expansion. The approximated curves do not match the traveltime well if constructed...

Practical considerations for computing the kernels of reflection-based full-waveform inversion

Houzhu (James) Zhang, Hong Liang, Hongwei Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

...). Due to various issues such as errors in the initial velocity which may lead to cycle skipping, most of FWI applications rely on transmitted data...

Application of finite difference eikonal solver for traveltime computation in forward modeling and migration

Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff

Geological Society of Malaysia (GSM)

...Application of finite difference eikonal solver for traveltime computation in forward modeling and migration Amir Mustaqim Majdi, Seyed Yaser...

Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)

Thais A. Guirigay and John B. Bancroft

Search and Discovery.com

... will lie. These figures (2) show the traveltime errors on CSP gathers views of various offsets of h = 50, 200, and 500. AAPG Search and Discovery Article...

Prediction of multiple origin overpressure in deep fold-thrust belt: A case study of Kuqa subbasin, Tarim Basin, northwestern China

Changyu Fan, Gang Wang, Zhenliang Wang, Xiaojie Han, Jie Chen, Kuaile Zhang, and Baoshou Zhang

AAPG Bulletin

... of the compaction curve from the relationship between acoustic traveltime and depth into that of sonic velocity versus VES to obtain the mean loading curves...

Abstract: Local Stretch Zeroing NMO Correction; #90174 (2014)

N. Kazemi and H. R. Siahkoohi

Search and Discovery.com

... of normal move-out (NMO) correction called local stretch zeroing (LSZ) method that avoids NMO stretch. The method eliminates the theoretical curves...

Checkshots and Vertical Seismic Profiles: Part 7. Geophysical methods

B. A. Hardage

AAPG Special Volumes

... have one shortcoming that can limit their usefulness--the reflection events used to map the seismic sequences and the seismic facies that describe...

New perturbation-based traveltime approximation for elastic VTI media

Shibo Xu, Alexey Stovas, Xingguo Huang

International Meeting for Applied Geoscience and Energy (IMAGE)

...New perturbation-based traveltime approximation for elastic VTI media Shibo Xu, Alexey Stovas, Xingguo Huang New perturbation-based traveltime...

Generalized internal multiple elimination

Dongliang Zhang, Constantinos Tsingas, Mohammed S. Almubarak

International Meeting for Applied Geoscience and Energy (IMAGE)

... cross-correlation Cross-correlating two traces yields the traveltime difference between different events. The formula of cross-correlation is described...

Enhanced ray-based tomography method

Jonathan Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... tomography method plays a significant role in velocity model building, due to its consistency with PSDM, efficiency and flexibility to handle various...

Abstract: The Effect of Microseismic Array Configuration on the Determination of Hydraulic Fracture Parameters; #90172 (2014)

Adam Baig, Ted Urbancic, Margaret Seibel

Search and Discovery.com

... to assess the efficiency of the treatment. Often, these microseismic events are recorded with sub-optimally distributed downhole sensor arrays, this has...

Abstract: Interpretation of Natural Fractures from the Traveltime Variation with Source-receiver Azimuth in the Alberta Foothills; #90172 (2014)

Draga A. Talinga, Don C. Lawton

Search and Discovery.com

... of the method to include cross-correlation of commonazimuth stacked data for both shallow and deep events. A second method applied was azimuthal traveltime...

Seismic-attribute Analysis for Gas-hydrate and Free-gas Prospects on the North Slope of Alaska

M. W. Lee, T. S. Collett, T. L. Inks

AAPG Special Volumes

... with high-amplitude events and a characteristic amplitude relative to offset behavior. However, seismic-data-driven analysis for detecting and quantifying...

Method of Spatial Observations of RNP Under the Conditions of the Reef Zone of the Orenburg Cis-Urals

I. A. Mushin

Petroleum Geology: A Digest of Russian Literature

... data is accomplished by a method that provides for the use of time gradients of traveltime curves of reflected waves for various directions (3...

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

... in the overburden, full waveform inversion (FWI) was used to generate an updated earth model, exploiting both early arrivals and reflection events. One caveat...

Analysis of the impact of demigration on traveltime-based reflection full-waveform inversion

Hong Liang, Houzhu (James) Zhang, Hongwei Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

...Analysis of the impact of demigration on traveltime-based reflection full-waveform inversion Hong Liang, Houzhu (James) Zhang, Hongwei Liu Analysis...

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)

... and efficiency in generating Surface-Offset-binned common imaging Gathers (SOGs). However, traditional ray-based traveltime computation becomes less...

Abstract: Advantages and Disadvantages of Array Depth Placement and Longer Toolstring Apertures; #90187 (2014)

N. Verkhovtseva and J. Shaffner

Search and Discovery.com

... (200 trials with a maximum traveltime error of 2ms). For the most inner time residual contour, the errors vary from 50m for events 250m away from...