Seismic Migration Interpolation using Time-Shift Imaging Condition

Mark Ng

Search and Discovery.com

... is the shot migration result using post-imaging linear interpolation (i.e., up-sampling) in the depth output. As migration depth increases, it degrades...

Subsurface formation pressure gradient vs. slope: Perception and pitfalls

Selim S. Shaker

International Meeting for Applied Geoscience and Energy (IMAGE)

.... These measurements increase with depth in linear trends (i.e., transgressive) either in static or hydrodynamic conditions (during deposits compaction). Gradient...

Seismic Characterization of the Navajo Reservoir, Buzzards Bench, Utah; #51503 (2018)

Kimberley Haar, Robert Balch, Robert Will

Search and Discovery.com

... velocity from the TDR was modelled using Gaussian random function simulation. The combined velocity model ranges between 3000 and 7600 m/s. Navajo...

A case study using FWI to image pre-Messinian target in the East Mediterranean Sea

Jyoti Kumar, Marcus Bell, Tamer Darwish, Mai Ahmed, Mahmoud Ahmed, Moataz Ahmed

International Meeting for Applied Geoscience and Energy (IMAGE)

... study using FWI to image pre-Messinian target in the East Mediterranean Sea Figure 4 Depth slice (left) and Inline (right) of final velocity model...

Scour and Fill Processes in a Deep River Hole, Ohio River, Louisville, Kentucky: NOTES

Bruce R. Moore

Journal of Sedimentary Research (SEPM)

.... PROCEDURE Techniques The hole was mapped using depth sounding and navigation equipment mounted in a 36 ft. work boat. Navigation ranges for sounding...

Abstract: Porosity of Meteorite Impact Rocks: Inferences from Geophysical and Petrophysical Studies from the Lake Bosumtwi Impact Crater, Ghana; #90211 (2015)

Damien Meillieux, Douglas Schmitt, Meghan Brown, Marek Welz, Tiewei He, Bernd Milkereit, Tobias Karp, Christopher Scholz, and Sylvester Danour

Search and Discovery.com

... wave velocity ratio shows values increasing with depth from 2.5 to 2.7, which is characteristic of this type of rocks. Borehole Logging The in-situ...

The Effects of Entrainment on the Hydraulic Equivalence Relationships of Light and Heavy Minerals in Sands

Rudy L. Slingerland

Journal of Sedimentary Research (SEPM)

..., these conditions would also permit the deposition of magnetite grains (of a size) that had the same settling velocity." Using known settling velocity laws he deduced...

Effective Use of High Density VSP Measurements to Predict Pore Pressure and Estimate Mud Weight Ahead of Drilling in the Mahakam Delta, Indonesia

Mohammed Badri, Stephane Gazet, Gregoire de Tonnac

Indonesian Petroleum Association

... inversion method, time to depth conversion can be achieved using Gardner’s equation (Gardner et al, 1974) where density is expressed in terms of velocity...

Improving total organic carbon estimation for unconventional shale reservoirs using Shapley value regression and deep machine learning methods

Jaewook Lee, David E. Lumley, and Un Young Lim

AAPG Bulletin

... correlated with the TOC logs, such as bulk density, P-wave velocity, and Poisson’s ratio. Second, we derive a multivariate linear regression model...

Comparison of Interval Velocity and Inversion Velocity Usage to Build 3D Pore Pressure Models - Case Study: JA Field, East Java Basin

Jihan Hardiyanti Arief, Alamsyah M. Juwono, Muhajir

Indonesian Petroleum Association

... that exceeds normal pore pressure or hydrostatic pressure. Pre-drill pore pressure analysis could be performed using velocity variables, in which...

Water column corrections: Joint water velocity inversion for 4D marine surveys

Didier Lecerf, Mathieu Lange, Andrew Oates, Jyoti Kumar

International Meeting for Applied Geoscience and Energy (IMAGE)

... velocity function. Common Depth Point (CDP) gathers are produced for the overburden along a subsurface strip and for each sail lines and both vintages...

Discrimination of Depositional Environments Using Settling Tube Data

Asahiko Taira , Peter A. Scholle

Journal of Sedimentary Research (SEPM)

...-velocity distributions of more than 500 modern and near-modem river, dune, beach, tidal-flat, and turbidite sediment samples were analyzed using...

Using Reflected Phases to Improve Depth Resolution of Microseismic Source Locations from Single-Well Observations

James Rutledge, Nobukazu Soma

Unconventional Resources Technology Conference (URTEC)

...Using Reflected Phases to Improve Depth Resolution of Microseismic Source Locations from Single-Well Observations James Rutledge, Nobukazu Soma URTeC...

Traveltime tomography and efficient physics-informed Bayesian inversion

Tian Qiao, George Turkiyah, Gerard T. Schuster

International Meeting for Applied Geoscience and Energy (IMAGE)

... after a linear moveout correction, and c) velocity profile (dark solid lines) estimated by damped least squares inversion. The width of the gray zone...

Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)

Kristof De Meersman and Marcelo Roizman

Search and Discovery.com

... receiver location is therefore only a function of the thickness, P-wave velocity and S-wave velocity of the weathered zone at that receiver location...

Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)

Kristof De Meersman and Marcelo Roizman

Search and Discovery.com

... receiver location is therefore only a function of the thickness, P-wave velocity and S-wave velocity of the weathered zone at that receiver location...

Petrophysical Classification of Siliciclastics for Lithology and Porosity Prediction from Seismic Velocities (1)

LEV VERNIK and AMOS NUR

AAPG Bulletin

... at comparable porosities to rocks in the first two groups. The compressional velocity-porosity relation for each of these groups is found to be linear...

High-resolution elastic full-waveform inversion using ocean-bottom nodes in Santos Basin, Brazil

Marilia Carneiro, Nathalia Ladeira Casado, Juliana Igarashi da Cruz, Pedro Barros, Chirag Parekh, Emmanuel Saragoussi, Bernardo Quijano

International Meeting for Applied Geoscience and Energy (IMAGE)

... when considering the pre-salt regime, featuring carbonate and deeper velocity inversions. These challenges are best tackled using broadband, long...

Chapter 4: Synthetic Seismograms and Their Uses

Tom Wittick

North Texas Geological Society

... that of the seismic technique. Faust empirically derived a relationship between velocity and resistivity as a function of depth and it is stated as follows: V...

Synthetic Seismograms and Their Uses

Abilene Geological Society

... that of the seismic technique. Faust empirically derived a relationship between velocity and resistivity as a function of depth and it is stated...

Resolution limits of fluid overpressures from mineralogy, porosity, and sonic velocity variations in North Sea mudrocks

Christian Hermanrud, and Oddgeir Undertun

AAPG Bulletin

..., observed deviations from reference velocity versus depth trends are converted to pore pressure changes with little or incomplete analyses of potential...

Variation in the Chemical Composition of Oil-Field Brines with Depth in Northern Louisiana and Southern Arkansas: Implications for Mechanisms and Rates of Mass Transport and Diagenetic Reaction

Jeffrey S. Hanor

GCAGS Transactions

.... If D is constant over the depth range of interest, then from equation 1, C will be a linear function of z, as is observed in the Figure 5. Dissolved...

Application of 3

Search and Discovery.com

Incorporation of Geology, Wells, and Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables True Earth ModelŽ, #40828 (2011)

Huyen Bui, Peck-Hwa David Ng, Jenny Zhou, Chih-Wen Kue, Mart Smith

Search and Discovery.com

... parameter that can cause the depth change at zero offset is seismic velocity using depth migration. Therefore, it is very important to update...

Abstract: Least Square Migration in Image domain (LSMi) along with Better Velocity Modeling Improves Subsalt Imaging, Offshore Mediterranean, Case Study; #90319 (2018)

Ivica Mihaljevic, Mohamed Afia, Mahmoud M. Shabana, Mohamed Sheneshen, Hany M. Hussein, Mahmoud Ouda, Amr Ghanem, Refaat Zaki, Satyendra Rana, Maud Maud Cavalca, Laurence Letki

Search and Discovery.com

... the velocity model we have used iterative geologically constrained tomography. High resolution tomography paired with Kirchhoff Pre stack Depth Migration has...