Abstract: Macro-velocity Model Building in a Laplace-domain Waveform Inversion; #90174 (2014)

Changsoo Shin and Wansoo Ha

Search and Discovery.com

... ú ë û The velocity model is updated by the sum of each gradient direction normalized by the pseudo-Hessian (Shin and Cha, 2008) as Ns l+1 l pk = pk...

Some Principles and Techniques Used in Reconstructing the Hydraulic Parameters of a Paleo-Flow Regime

Alan V. Jopling

Journal of Sedimentary Research (SEPM)

... of bed forms are the slope of the energy gradient, the depth, the size of the bed material, and the fall (settling) velocity of the bed material. Many...

Building the Messinian Salt Layer in the East Mediterranean Basins

Search and Discovery.com

Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone

W. T. Born, J. E. Owen

AAPG Bulletin

...Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone W. T. Born, J. E. Owen 1935 9 18 19 1. (January) Laboratory measurements...

Abstract: Geomechanics, Anisotropy and LMR; #90174 (2014)

Marco Perez, Bill Goodway, and David Close

Search and Discovery.com

..., Stress Estimation in Faulted Regions: The Effect of Residual Friction, SPE/ISRM 47210 Tsvankin, I., 1997, Anisotropic parameters and P‐wave velocity...

Experimental Low-Altitude Aeromagnetic Reconnaissance for Petroleum in Arctic National Wildlife Refuge, Alaska, Using Horizontal Gradients--A Progress Report: ABSTRACT

Terrence J. Donovan, John D. Hendricks, Alan A. Roberts, Patricia T. Eliason

AAPG Bulletin

... of the resultant horizontal gradient vector relative to the flight path. This calculation provides data for the unmeasured area between adjacent flight lines...

Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf: Discussion

Peter Japsen

AAPG Bulletin

... for shale from all three areas thus appear to be uniform over kilometer-thick sections: they show a steady velocity-depth gradient that is very close...

Horizontal Pressure Disequilibrium and Its Indication on Fluid Continuity in Shale Plays

Xinyu Xia, Yongli Gao

Unconventional Resources Technology Conference (URTEC)

... and in the absence of horizontal migration. Original pressure gradient before the uplift is assumed to be 0.7 – 0.9 psi/ft from up-dip to down-dip. The pore...

Real-Time Pore Pressure Monitoring Optimizes Drilling 4 Deep Water Wells in Kutei and Tarakan Basin - Offshore East Kalimantan

Graziano Capone, Giovanni Bucari, Somesh Bahuguna, Ngurah Beni Setiawan

Indonesian Petroleum Association

..., or shear failure, and the loss gradient (minimum horizontal stress gradient). Coupling the effects of the deepwater environment with exploration...

Mixing at Turbidity Current Heads, and Its Geological Implications

J. R. L. Allen

Journal of Sedimentary Research (SEPM)

... imposed on the medium. It follows that if a separation bubble was driven along by the head as it advanced, the horizontal velocity relative to a fixed...

Analytical Approach for Multivariate Exploration Planning via Secondary Migration Modelling

Amin Shokrollahi, Sara Borazjani, Syeda Sara Mobasher, Ulrike Schacht, Khalid Amrouch, Pavel Bedrikovetsky

Australian Petroleum Production & Exploration Association (APPEA) Journal

...) developed a new formulation to investigate the effect of vertical and horizontal permeability variation of porous media on the propagation of planar...

ABSTRACT: Porosity-Velocity Distribution in Stratigraphic Sequences: The Marion-Yin Model; #90013 (2003)

JUAN FLOREZ, GARY MAVKO

Search and Discovery.com

... be associated to the effect of sorting on porosity and consequently on permeability (Figs. 4 and 5) and velocity (Avseth et al, 2000). However, in the case...

Fluid Mechanics

Jeffrey S. Hanor

Special Publications of SEPM

... is fluid density, g is the gravitational constant, and z is elevation. The symbol V is the gradient operator, which we will be defining shortly...

Abstract: Thermal and Compositional Structure of the Lithospheric Mantle in the Barents Sea, by Laura Marello; #90177 (2013)

Search and Discovery.com

High-End Model Building Techniques for Revealing a Pre-Carbonate Reservoir Offshore East Natuna Basin, Indonesia

Jun Wang, Yonghe Guo, Yitao Chen, Muhammad Nauvall Juliansyah, Nick Crabtree

Indonesian Petroleum Association

... to be a challenging area for seismic imaging due to the presence of velocity heterogeneity in a more than 1.5 km thick carbonate overburden. An accurate...

2.0 Abnormal Pore Fluid Pressures: Definition, Terminology, Observations

P. E. Gretener

AAPG Special Volumes

... gradient is observed in this area as the Alpine front is approached. The effect is attributed to horizontal compression. Similar observation have been...

Elastic Anisotropy of Source Rocks: Implications for Hydrocarbon Generation and Primary Migration

Lev Vernik , Charles Landis

AAPG Bulletin

... increase in the gradient, dVp(0°)/dPc, of the bedding-normal P wave velocity with pressure taken at a low Pc of 5 MPa roughly coincides with the peak...

Abstract: Optimum Aperture Length for Improving Dispersion Curve Analysis in CMP Cross-Correlation of Surface Waves; #90187 (2014)

Roohollah Askari, Robert J. Ferguson, and Helen Isaac

Search and Discovery.com

... the source effect (initial phase value) is removed, therefore, the data can be sorted CMP gathers. Consequently, we calculate the phase velocity...

Transportation of Detritus by Moving Water

Filip Hjulstrom

Special Publications of SEPM

... in that the effect of any disturbance, such as waves or damming, can not go upstream. If the velocity increases markedly, other phenomena...

The Maturity of Organic-Rich Shales Using Micro-Impedance Analysis, #40675 (2010)

Kenechukwu Mba, Manika Prasad, Michael L. Batzle,

Search and Discovery.com

... of Mines Presented by Rick Sarg CONCLUSIONS • High silica + carbonate content results in high impedance shales. No simple relationship between velocity...

Seismic Refraction Studies in Gulf of California

Richard P. Phillips

AAPG Special Volumes

... is [EQUATION] where 1.74 km/sec is the velocity at the sediment-water interface, 0.91 sec-1 is the velocity gradient, and Z is the depth in kilometers...

Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia

Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith

AAPG Bulletin

... the effect of carbonate content at shallow depth. Virtually all wells with shallow sonic velocity data show a marked change in gradient at around 300-500 m...

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

Paul L. Stoffa

Circum Pacific Council Publications

...), we sum the traveltime contributions from each layer. T-p Traveltimes v + q Considering a stack of horizontal constant velocity layers of thickness...

Abstract: Migration of Velocity Spectra: An Example from the Philippines

Craig J. Beasley, Rolf Klotz

Geological Society of Malaysia (GSM)

... data is located at an unmigrated position and thus should be repositioned prior to use as a migration velocity. The effect of this phenomenon...

An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement

Andy Furniss

Indonesian Petroleum Association

... whereas seismic velocities typically measure the horizontal component. In any situation where there are vertical or lateral velocity variations...