Multiscale insights into the Mount Weld REE deposit from 2D and 3D active seismic survey data

Thomas Bell, Greg Turner, Ganesh Bhat, Brad Knell

International Meeting for Applied Geoscience and Energy (IMAGE)

.... between the 3200m/s velocity contour and the depth of weathering independently observed in drill cuttings (shown by the transition from cyan to blue...

Delineation of Jonah field Using Seismic and Sonic Velocity Interpretations

Ronald C. Surdam, John Robinson, Zun Sheng Jiao, Nicholas K. Boyd III

Rocky Mountain Association of Geologists

... a significant velocity-inversion surface in the Jonah area. For example, in Figure 10 it is apparent that, after removing the regional velocity/depth gradient...

Application of Traveltime Tomography and Kirchhoff Migration Methods to Improve the Seismic Cross-Section Resolution on 2D Land Seismic Data

Harmita Lestari, Nur Ayu Anas, Muh. Resky Ariansyah, Sabrianto Aswad, Heri Winarto

Indonesian Petroleum Association

.... At this stage the module used is VELMOD which functions to obtain a velocity interval model for migration in the domain depth. In subsurface modelling...

Towards Quantitative Assessment of 4D DAS Time Shifts for Enhanced Stimulated Rock Volume Characterization

Yesser Haj Nasser

Unconventional Resources Technology Conference (URTEC)

... and the starting depth of every stimulation stage. After Haj Nasser (2022). The monitor P-wave velocity after stimulating stage 38, shown with the blue curve...

Imaging below Seafloor Canyons and other Rugose Features

Dominic Fell, Kiran Dyal, Tony Hallam, Sebastian Nixon

Australian Petroleum Production & Exploration Association (APPEA) Journal

... of velocity related structural distortions. Keywords: depth imaging, depth migration, earth model building, seafloor topography, tomography. Accepted...

Geometric mode decomposition method for diffraction separation

Peng Lin, Suping Peng, Yang Xiang, Chuangjian Li, Xiaoqin Cui

International Meeting for Applied Geoscience and Energy (IMAGE)

... can effectively represent reflections with directional and linear geometric features by adaptively decomposing seismic data as a combination...

A depth uncertainty estimation system with prestack seismic data

Huafeng Liu, Andrey H. Shabelansky, Jinsong Chen, Min Yang, Cory J. Hoelting, Ying Tan

International Meeting for Applied Geoscience and Energy (IMAGE)

... is surface offset, 𝒗 𝒏𝒎𝒐 and 𝜼 𝒆𝒇𝒇 are effective NMO velocity and effective Eta, respectively, 𝑡0 and 𝑡 𝑥 are two-way traveltime at 0 and x offset...

Abstract: What’s New in Seismic Imaging?

John T. Etgen

Houston Geological Society Bulletin

... waves propagate. Recently, a method called “Waveform Inversion” has been gathering a lot of excitement. Historically the velocity “models...

Abstract: Multiple Attenuation Using MultiFocusing Technology; #90224 (2015)

Marianne Rauch–Davies, Alex Berkovitch, Kostya Deev, and Evgeny Landa

Search and Discovery.com

... of the RMS velocity and emergence angle panels, which are determined from the pre-stack data during the MF multidimensional analysis. We then calculated...

Study of Sub-Salt Sediments in the Bayram-Ali Gas Region

V. A. Teplitskiy, I. P. Belozerov, B. M. Geyman, V. P. Lupanosov

Petroleum Geology: A Digest of Russian Literature

... observations combined with common depth point measurements at the surface were used. This program was successful. The upper boundaries within the sandy...

ABSTRACT: Processing and Analysis of 3-D PS-wave Data for Reservoir Fracture Detection – Wyoming Case Study, by R. R. Van Dok, J. E. Gaiser, and J. E. Markert; #90906(2001)

Search and Discovery.com

The use of FWI in coal exploration

Mehdi Asgharzadeh, Maryam Bahri, Milovan Urosevic

Petroleum Exploration Society of Australia (PESA)

... seismic images are of a high quality; issues with depth conversion, fault throw estimate, coal quality, presence of fractured and gassy zones, weak strata...

AAPG Memoir 76, Chapter 13: Consolidation State, Permeability, and Stress Ratio as Determined from Uniaxial Strain Experiments on Mudstone Samples from the Eugene Island 330 Area, Offshore Louisiana

Beth B. Stump and Peter B. Flemings

AAPG Special Volumes

..., scientific results, v. 150: College Station, Texas, Ocean Drilling Program, p. 377–384. Bowers, G. L., 1994, Pore pressure estimation from velocity...

Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study

Naoshi Aoki, Shogo Narahara, Akihisa Takahashi, Tsukasa Nishiki

Indonesian Petroleum Association

... zero-offset point so that conflicting dips can be described. MDRS also provides objectively-analyzed velocity information, which can be a useful...

Abstract: Integrated Analysis and Inversion of 3D Refraction Travel Times; #90171 (2013)

Igor B. Morozov and Atul Jhajhria

Search and Discovery.com

... parameterization, an initial subsurface model is automatically derived from the travel times and is further refined by iterative, non-linear travel-time...

Mapping Areas of Greater Thickness of the Clastic Unit of the Lower Carboniferous by the Seismic Reflection Method

A. K. Urupov, Yu. A. Byakov, S. A. Shikhov

Petroleum Geology: A Digest of Russian Literature

... of systems of traveltime curves of reflected waves for determining effective velocity: Razvedoch. i Promyslov. Geofizika, vyp. 20. The clastic sediments...

Velocity model building from 3D surface seismic data at the Utah FORGE EGS site

Yun-Ha Jung, Nori Nakata, Sea-Eun Park, Ju-Won Oh

International Meeting for Applied Geoscience and Energy (IMAGE)

... the inverted velocity model with available well-log data, we observe distinct three depth zones, unconsolidated alluvium, consolidated alluvium...

Geomechanical and Geophysical Analysis of a Wattenberg Field through Wavefield Re-Datuming and Inversion

Jyoti Behura, Pete Smith, Oscar Quezada

Unconventional Resources Technology Conference (URTEC)

.... For the above reasons, the re-datumed data is ideal for traveltime and amplitude inversion. We perform azimuthal velocity analysis (assuming...

Abstract: Converted-Wave Prestack Time Migration with a New Approximate Migration Weight; #90224 (2015)

Chuck Ursenbach and Peter Cary

Search and Discovery.com

.... t0 is the two-way vertical traveltime, with z the vertical distance to the image point and v the velocity of the homogeneous medium. CMP...

Growth and demise of a Paleocene isolated carbonate platform, northwest Sirte Basin, Libya: Sequence stratigraphic architecture and controlling factors

Muneer Abdalla, Wan Yang, and Salah Shaniba

AAPG Bulletin

... bounded by unconformable sequence boundaries. Those seismic sequences are ∼450–550 m thick in two-way traveltime and have an aerial extension of at least...

Mitigating elastic effects of acoustic full-waveform inversion with deep learning and application to field data

Dimitri Voytan, Adriano Gomes, Debanjan Datta, Ren-douard Plessix, Anu Chandran, Ken Matson

International Meeting for Applied Geoscience and Energy (IMAGE)

... inversion is a key component of highresolution velocity model building. For industry scale applications, an acoustic approximation of the equations...

Towards wave-equation ambient noise tomography of a landslide: The Harmalière case study

Giuseppe Provenzano, Grégory Biévre, Romain Brossier, Stéphane Garambois, Ludovic Métivier

International Meeting for Applied Geoscience and Energy (IMAGE)

...-wave velocity (Vp ) by 3D first-arrival traveltime tomography (TT). The ambient noise dataset is dominated by surface waves, down to frequencies as low...

Estimation of Formation Pressures from Log-Derived Shale Properties(*)

C. E. Hottman , R. K. Johnson

GCAGS Transactions

...-pressured formations. On a plot of transitime versus depth, a linear relationship is generally observed, whereas on a plot of resistivity versus depth...

Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools

Duane Dopkin, Anat Canning, Philip Neri

Petroleum Exploration Society of Australia (PESA)

... azimuth data. industry. With the constraints imposed by generates a lot of record ings that have azimuths Anisotrop ic velocity differences...

Key Technologies for Processing of Seismic Data in Gas Cloud Area, Bohai Bay Basin, #42093 (2017).

Xia Tongxing, Ming Jun, Liu Lei, Zhou Xuefeng, Liu Hongxing, Liu Xuetong

Search and Discovery.com

... attenuated traveltime tomography. Then, model-driven Q compensation is realized directly during depth migration. Conventional reflection tomography...