First-arrival traveltime and slope tomography in tilted anisotropic media with undulant topography

Xiaole Zhou, Serge Sambolian, Gaoshan Guo, Stephane Operto, Haiqiang Lan, Ling Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

...First-arrival traveltime and slope tomography in tilted anisotropic media with undulant topography Xiaole Zhou, Serge Sambolian, Gaoshan Guo...

AAPG Memoir 76, Chapter 16: Pore Pressure ahead of the Bit: An Integrated Approach

Nader C. Dutta, William H. Borland, W. Scott Leaney, Richard Meehan, and W. Les Nutt

AAPG Special Volumes

... is generally in the form of a prediction of acoustic impedance vs. two-way traveltime. Using an empirical velocity-density relationship...

Pattern Recognition in a Digital Age: A Gameboard Approach to Determining Petrophysical Parameters; #40929 (2012)

Daniel A. Krygowski and Robert M. Cluff

Search and Discovery.com

..., in Montana, in December. Bulk density or sonic traveltime plus matrix and fluid values, Porosity, Phi (slow and laborious to determine.) 1 n...

Simultaneous Joint Inversion of Seismic, Magnetotelluric and Gravity in a Sub-Volcanic Reservoir

Muhammad Irsyad Hibatullah, Maulana hutama Rahma Putra, Firman Syaifuddin Akbar, Dwa Desa Warnana, Fahrenzy Yona Aisha

Indonesian Petroleum Association

... process carried out simultaneously between the gravity, magnetotelluric, and Traveltime Tomography methods so that all methods are correlated with each...

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...

Enhance near-surface velocity tomogram using land-streamer data

Sherif M. Hanafy

International Meeting for Applied Geoscience and Energy (IMAGE)

... at the top 20 meters by inverting the traveltime picks from both conventional and land-streamer surveys simultaneously, which keeps the advantages of both...

Application of Fullwaveform Tomography to VSP Walkaway Data

Eric Takam Takougang, Youcef Bouzidi

Petroleum Exploration Society of Australia (PESA)

... data preconditioning and inversion strategy. The field data were inverted between 4 and 50 Hz, and the starting model was obtained from traveltime...

Characterizing the Near Surface with VSP and Well Logs

Search and Discovery.com

... was calibrated. As shown in Figure 2c, the sonic traveltime becomes longer than VSP traveltime with increasing depth. Although sonic times are often expected...

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...

Abstracts: Seismic Anisotropy of the Marcellus Shale: Feasibility Study for Fracture Characterization; #90173 (2015)

James Gaiser, Alvaro Chaveste, Mary Edrich, Tony Rebec, and Richard Verm

Search and Discovery.com

... suggest an accurate inversion of traveltime information is feasible for characterizing interval properties of an orthogonal set of fractures. One...

A Preliminary Study on the Late Cenozoic Structural Characteristics of Arakan Fold Belt, Bay of Bengal; #50829 (2013)

Tang Pengcheng, Lü Fuliang, Fan Guozhang, Shao Dali, Wang Xuefeng, Sun Hui, and Li Li

Search and Discovery.com

... situated at about 6.5 s (Two-way traveltime). Anticline A is located at the the deformation leading edge of Arakan fold belt, no obvious growth strata...

Application of VTI PSDM for imaging carbonate structures

Seyed Yaser Moussavi Alashloo, Deva Ghosh, Yasir Bashir, Amir Babasafari

Geological Society of Malaysia (GSM)

... for traveltime computation (Moussavi Alashloo & Ghosh, 2017). The calculated isotropic and anisotropic traveltimes are compared and employed in a standard...

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)

... wavefield and The traveltime information used for inversion can be estimated by finding the optimal time-lag of the crosscorrelation between...

Enhancing the accuracy of DBSCANs first arrival traveltime picking using super-virtual refraction interferometry

Muhammad Awais, Sherif M. Hanafy, King Fahd

International Meeting for Applied Geoscience and Energy (IMAGE)

...Enhancing the accuracy of DBSCANs first arrival traveltime picking using super-virtual refraction interferometry Muhammad Awais, Sherif M. Hanafy...

Extended full-waveform inversion to improve the subsalt imaging in GOM

Guojian Shan, Jingru Chen, Zhemin Tan, John Chen, Yue Wang, Xiaoting Lou, Jennifer Zhang, William Lester

International Meeting for Applied Geoscience and Energy (IMAGE)

...-skipping arises from an inaccurate initial velocity model, causing a discrepancy in traveltime beyond half the wavelength of the given frequency...

Abstract: Reservoir Characterization of Plover Lake Heavy-Oil Field, by Larry Lines, Joan Embleton, Mathew Fay, Steve Larter, Tony Settari, Bruce Palmiere, Carl Reine, and Douglas Schmitt; #90075 (2008)

Search and Discovery.com

Reservoir Characterization of Plover Lake Heavy-Oil Field, by Larry Lines, Joan Embleton, Mathew Fay, Steve Larter, Tony Settari, Bruce Palmiere, Carl Reine, and Douglas Schmitt, #40274 (2008).

Search and Discovery.com

ABSTRACT: Tectonic Structure of the Tuscany-Latium Continental Shelf (Tyrrhenian Sea), by Roberto Bartole; #91032 (2010)

Search and Discovery.com

VSP Fundamentals that Improve CDP Data Interpretation: ABSTRACT

J. E. Gaiser, J. P. Disiena

AAPG Bulletin

... an alternative approach and a valuable link between the synthetic and CDP data. A VSP extends check shot surveys from first break traveltime analysis...

Abstract: Prestack Signal Enhancement by Non-hyperbolic MultiFocusing; #90187 (2014)

Evgeny Landa, Alex Berkovitch, and Kostya Deev

Search and Discovery.com

... for traveltime stacking surface description is used. It allows accurately approximate traveltimes of seismic events in the vicinity of arbitrary offset. We present...

Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data

Paul L. Stoffa

Circum Pacific Council Publications

... be imaged by correcting the vertical delay time to two-way normal time, without the use of the hyperbolic traveltime approximation. It can...

Sensitivity analysis of acoustic waveform inversion to velocity anomalies in the near-surface using the Frchet derivative

Ao Cai, Colin A. Zelt

International Meeting for Applied Geoscience and Energy (IMAGE)

... anomalies, whereas nonlinear traveltime tomography (TT) is known to be more sensitive to high velocity anomalies than low velocity anomalies because...

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

Emil Blias

Search and Discovery.com

... to estimate shallow velocity structure, (iii) Non-linear horizon based traveltime tomography to improve depth velocity model and (iv) time-dependent velocity...

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

... accurate time-to-depth information. Check shots are direct transmission measurements at seismic frequencies of traveltime from a surface source...

Amplitude and Bandwidth Recovery Beneath Gas Zones Using Kirchhoff Prestack Depth Q-Migration

Jonathan Liu, Peter Traynin, J. M. Reilly

Indonesian Petroleum Association

... representing attenuation, and ω 0 is a reference frequency (Keers et al., 2001). The complex traveltime can be calculated by Tc (x) = T (x) − 1...