Locating and quantifying geological uncertainty in three-dimensional models: Analysis of the Gippsland Basin, southeastern Australia
Geological three-dimensional (3D) models are constructed to reliably represent a given
geological target. The reliability of a model is heavily dependent on the input data and is …
geological target. The reliability of a model is heavily dependent on the input data and is …
Reconstruction and interpolation of manifolds. I: The geometric Whitney problem
We study the geometric Whitney problem on how a Riemannian manifold (M, g) can be
constructed to approximate a metric space (X, d_X)(X, d X). This problem is closely related to …
constructed to approximate a metric space (X, d_X)(X, d X). This problem is closely related to …
Image-ray tracing for joint 3D seismic velocity estimation and time-to-depth conversion
E Iversen, M Tygel - Geophysics, 2008 - pubs.geoscienceworld.org
Seismic time migration is known for its ability to generate well-focused and interpretable
images, based on a velocity field specified in the time domain. A fundamental requirement of …
images, based on a velocity field specified in the time domain. A fundamental requirement of …
Time-to-depth conversion and seismic velocity estimation using time-migration velocity
The objective was to build an efficient algorithm (1) to estimate seismic velocity from time-
migration velocity, and (2) to convert time-migrated images to depth. We established …
migration velocity, and (2) to convert time-migrated images to depth. We established …
[HTML][HTML] Structural uncertainty of time-migrated seismic images
S Fomel, E Landa - Journal of Applied Geophysics, 2014 - Elsevier
Structural information in seismic images is uncertain. The main cause of this uncertainty is
uncertainty in velocity estimation. We adopt the technique of velocity continuation for …
uncertainty in velocity estimation. We adopt the technique of velocity continuation for …
A coupled level set and volume of fluid method with a re-initialisation step suitable for unstructured meshes
This paper presents a coupling method of the level set and volume of fluid methods based
on a simple local-gradient based re-initialisation approach that evaluates the distance …
on a simple local-gradient based re-initialisation approach that evaluates the distance …
[HTML][HTML] Focal-time analysis: A new method for stratigraphic depth control of microseismicity and induced seismic events
Focal-time analysis is a straightforward data-driven method to obtain robust stratigraphic
depth control for microseismicity or induced seismic events. The method eliminates the …
depth control for microseismicity or induced seismic events. The method eliminates the …
Recent advances in time-domain seismic imaging
S Fomel - SEG International Exposition and Annual Meeting, 2014 - onepetro.org
Time-domain imaging, which includes prestack time migration, as well as normal moveout,
offset continuation, and stacking, is a workhorse of seismic data processing. Although time …
offset continuation, and stacking, is a workhorse of seismic data processing. Although time …
Automatic stacking‐velocity estimation using similarity‐weighted clustering
Local seismic event slopes contain subsurface velocity information and can be used to
estimate seismic stacking velocity. In this paper, we propose a novel approach to estimate …
estimate seismic stacking velocity. In this paper, we propose a novel approach to estimate …
Kinematic time migration and demigration of reflections in pre-stack seismic data
In kinematic time migration one maps the time, slope and curvature characteristics of seismic
reflection events, referred to as reflection-time parameters, from the recording domain of the …
reflection events, referred to as reflection-time parameters, from the recording domain of the …