Chart Migrations

Frank A. Roberts

Oklahoma City Geological Society

.... They will be: Concentric circles, if velocity is assumed to be constant through the geologic section. Circles, but not concentric, if linear increase...

Investigation of the linear velocity model in the Western-Canadian Basin

Michael A. Slawinski, John M. Parkin

CSPG Special Publications

...Investigation of the linear velocity model in the Western-Canadian Basin Michael A. Slawinski, John M. Parkin 1998 196 197...

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

Peter Japsen

AAPG Bulletin

... areas (their figures 6, 8, 12). The authors compare the data with a linear velocity-depth trend: Vp = 1477 + 0.57 Z, which is similar to the normal...

Modified Residual Migration

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

... direction. Both the constant and linear term of the velocity function also increase significantly with depth. The maximum structural dip for this model...

Tomography Techniques Applied to Near Surface Velocity Models in Complex Areas of Colombia

Jorge Monsegny, Saúl Guevara

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... the intersection of hyperplanes in the velocity model space (Stewart, 1991; Lo Tien, 1994). Nevertheless, the basic formulation of these linear methods...

Abstract: Effect of Thermal Shock on P and S Wave Speeds in a Low-porosity Quartz Sandstone; #90174 (2014)

Wei Xie and Douglas R. Schmitt

Search and Discovery.com

... to a more linear increase at about 80 MPa of confining pressure, this linear increase is consistent with that expected for a low porosity sandstone...

Geophysical Results From the Continental Margin Off Southern Baffin Island

A. C. Grant

CSPG Special Publications

... and Barrett, 1972), with no indication of velocity contrast at the level of the reflectors emphasized on the profile. Absence of a refractor at about 1...

Numerical Solution to Design Velocity Strings to Unload Wet Gas Wells for Optimum Flow Rate and Recovery

Bernando Purba, Awaldi Fitrah

Indonesian Petroleum Association

... rate by 20-200%. Installation of velocity string, i.e a shorter tubing with small diameter inside the actual tubing to increase velocity above critical...

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

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

Seismic Foldout: The Most Advanced Datasets Offshore Barbados and T&T

Jeniffer Masi, Jeroen Hoogeveen, Nick Tanushev, John Walker, Alexander Mihai Popovici, Geoex MCG, Z-Terra

GEO ExPro Magazine

... for faster turnaround time and, at the same time, increase the accuracy of the velocity model by using wide-azimuth information that is typically...

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

... depths to calcite cementation. The more rapid increase in sonic velocity with depth above 500 m would suggest that mechanical compaction more rapidly...

Detailed Oriented Seismic Processing Leads to More Accurate Elastic Attribute Results in the Delaware Basin

Marianne Rauch-Davies, Steve Smith, Alyona Bashkirtseva Hall

Unconventional Resources Technology Conference (URTEC)

... of a simple linear relationship between elastic properties works well in stratigraphic setting where only two lithologic types are present (e.g. sand and shale...

A Comparison of Depth Conversion Methods in Buntal Gas Field, Block B, Natuna Sea, Indonesia

Irfan Yuliandri Syukri, John Hughes, Medi Medianesterian

Indonesian Petroleum Association

... incorporated included: (1) a linear average velocity-time function; (2) a 2nd order polynomial time-depth function; (3) an instantaneous velocity-depth V0k...

Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12

E. W. Peikert

AAPG Special Volumes

... with a velocity event and it will be necessary to interpolate a Vnmo value at the sequence boundary from velocity events above and below prior...

Rock Physics Guided Velocity Modeling and Reverse-Time Migration for Pore Pressure Prediction and Depth Imaging in Complex Areas

Nader C. Duta, Sherman Yang, Yangjun (Kevin) Liu, Lawrence Cho, Jie Cui

Indonesian Petroleum Association

..., in the presence of anisotropy or complex geology, such as highly folded overthrust zone, where tomography velocity inversion becomes highly non-linear...

Marine Geological and Geophysical Studies of the Florida - Blake Plateau - Bahamas Area

Robert E. Sheridan, William L. Osburn

CSPG Special Publications

... to extrapolate this northward. Above the Jurassic strata are Lower and Upper Cretaceous limestones and dolomites. Their presence is known by velocity...

Mainstream Mantle Convection: A Geologic Analysis of Plate Motion

T. H. Nelson , P. G. Temple

AAPG Bulletin

... material balance when the convective component is added to the system. The assumption that the increase in mainstream velocity with depth is linear...

Slide Rule Seismic Computations

Robert H. Mansfield

Oklahoma City Geological Society

... a wide range of possible velocity functions. The circular ray path obtained by using a linear increase of velocity with depth provides a rather accurate...

Formation Porosity and Fluid Content from Velocity Logs

E. R. Denton

CSPG Bulletin

... is not linear, but is compressed at the high end. INTERPRETATION The general equation relating the velocity curve to lithologic character is:      (2...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

... the relationship between them. In the case of a linear increase in velocity with depth, the turning ray turns at the point of maximum depth...

Seismic Applications of the Velocity Log

W. G. Rimmer

CSPG Bulletin

... the same basic idea. The velocity log is scanned and converted to a linear time scale vertically plotted against a logarithmic function...

Geologic Framework of the Alaskan Continental Terrace in the Chukchi and Beaufort Seas

Arthur Grantz, Mark L. Holmes, Bruce A. Kososki

CSPG Special Publications

..., is steep, linear, and strongly sculptured by slumps and leveed channels off the western and central Beaufort shelf. Eastward, the slope becomes...

The SDP Dip Plotter

W. S. Hawes

Oklahoma City Geological Society

... of velocity with depth is present. Figure 2 shows the form for the classical case of linear increase of velocity with depth. This, of course, is the type...

Uncertainty Analysis for Top Tuban Carbonate Prediction using Velocity Modeling Design in "Aquila" Field, East Java Basin

Ayu Indri Firdani, Azhar Kholiq Affandi, Erik Wahyu Irawan, Kamal, M. Wahdanadi Haidar, M. Freddy Yulisasongko

Indonesian Petroleum Association

... the uncertainty of the Tuban Carbonate depth marker due to high velocity anomalies from the results of the conversion using the linear trend velocities...

A Comparison of the Various Methods of Dip Migration

H. Bruce Mayo

Oklahoma City Geological Society

...., Oklahoma City) supplied these data from actual seismic records, along with a velocity function V = 9000 + 0.6 Z (linear increase with depth). The scale...