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The AAPG/Datapages Combined Publications Database

Showing 27,674 Results. Searched 191,954 documents.

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Observations of Intrinsic Anisotropy in Varied Geologic Settings, #40562 (2010)

Lori A. Hathon, Michael T. Myers

Search and

... and into a direction perpendicular to the fast azimuthal velocity. Intrinsic azimuthal anisotropy in the thrust belt sands averaged 15% in both crestal...


Synthetic Passive Margin Stratigraphy

D. L. Turcotte , P. M. Kenyon

AAPG Bulletin

... is that the rate of erosion is a dominant variable in determining the type of stratigraphic section observed. The proposed approach may provide the basis...


Fracture-Porosity Identification from Anisotropy AVO and Fluid Substitution Modelling in Seismic 2D Data

Septian Prahastudhi, Tenny Octaviani, Ayi Syaeful Bahri, Yulia Putri Wulandari

Indonesian Petroleum Association

... P-wave velocity, S-wave velocity in both dry and wet condition. The anisotropy gradient has been found using anisotropy AVO modeling. The Thomsen...


Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 4: 3-D Seismic Interpretation of an Upper Permian Gas Field in Northwest Germany

H. E. C. Swanenberg, F. X. Fuehrer

AAPG Special Volumes

... by lateral velocity variations in the overburden, which complicated processing and interpretation of the survey. Despite nominally lower coverage than...


Hydraulic Sorting of Heavy-Mineral Grains by Swash on a Medium-Sand Beach

Michael G. Hughes, Jock B. Keene, Rebecca G. Joseph

Journal of Sedimentary Research (SEPM)

.... The mineralogy of the samples was determined, and measurements of grain size and settling velocity were obtained. The heavy-mineral grains had both a smaller...


Integration of Vertical Seismic, Surface Seismic, and Well-log Data at the Mallik 2L-38 Gas-hydrate Research Well, Mackenzie Delta, Canada

M. W. Lee, T. S. Collett, W. F. Agena

AAPG Special Volumes

... 600900 m (19682953 ft) are about 20% slower than the sonic-log-derived velocity, implying seismic anisotropy. The spectral ratio of downgoing waves...


The Crustal Structure and Evolution of the Area Underlying the Magnetic Quiet Zone on the Margin South of Australia: Rifted Margins

Manik Talwani , John Mutter , Robert Houtz , Michael Konig

AAPG Special Volumes

... a variable velocity structure. Computed seismic results indicate "continental" and "oceanic" sections and still others that are neither "oceanic" nor...


The Impact of Multi-Azimuth Seismic Over Tidepole

D. Dickinson, S. Gagen

Petroleum Exploration Society of Australia (PESA)

... variable fast velocity direction. Figure 4: Fast – Slow velocities model 5 anisotropic layer 3 (carbonates). The arrows vectors indicate a highly...


Seismic Data Acquisition and Processing in the Midway-Sunset Oil Field

C. R. Willingham, A. S. Wylie Jr., D. J. Underwood

Pacific Section of AAPG

... of the final processing results for these data. Velocity Determination Both down-hole and seismic velocity data were used in constructing a velocity model...


Probabilistic Reservoir Characterization via Seismic Elastic Inversion in East Andaman Basin; #40880 (2012)

Mahendra Kishore, Pritam Jha, Dino Ros, and Alfonso Iunio Marini

Search and

... basins, differences in Seismic Velocity and Density trends had to be managed during seismic inversion and lithology calibration. The final solution...


Application of Fullwaveform Tomography to VSP Walkaway Data

Eric Takam Takougang, Youcef Bouzidi

Petroleum Exploration Society of Australia (PESA)

... that can provide high resolution velocity, attenuation, and density images of the subsurface, based on the seismic waveform. The algorithm is based...


Quantitative Petrophysical AVO Error Analysis in a Layered Model

Search and

... of the effects of free-surface reflections and mode conversions, calibration without the S-wave velocity information, etc. could affect the AVO...


More on Drag and Settling

Gerard Middleton, John B. Southard

Special Publications of SEPM

... velocity, but in other situations (for example, a sphere resting on a bed of spheres, with flow parallel to the bed) it is much more difficult...


A Meaningful Correlation between Shallow Seismic Refraction Data to Borehole Data in Site Investigation Work

Samsudin bin Hj Taib, Ahmad Nizam Hasan

Geological Society of Malaysia (GSM)

... velocity values obtained from the shallow seismic refraction survey can be of quantitative value thus enhancing the use Bulletin of the Geological Society...


A Model Ranking Approach for Liquid Loading Onset Predictions

Hao Jia, Jianjun Zhu, Guangqiang Cao, Yingda Lu, Bo Lu, Haiwen Zhu

Unconventional Resources Technology Conference (URTEC)

... back, liquid film adverse flow or energy mechanisms, the critical gas velocity or flow rate at the transition boundaries of flow regimes in gas wells...


Structure of Extensionally Rifted Crust Beneath the Western Ross Sea and Iselin Bank, Antarctica, from Sonobuoy Seismic Data

A. K. Cooper, F. J. Davey, G. R. Cochrane

Circum Pacific Council Publications

... variable velocity gra­ dients that result in both nearly linear and curved refraction arrivals. These upper strata ( 1 . 9 - 5 . 6 km/sec) may record...


Utilizing Geological-Geophysical Cooperation for Successful Exploration: Abstract

Lawrence Y. Faust

Tulsa Geological Society

... by a variable density presentation of seismic reflection data which showed evidence of dip. The horizontal dimension of such a section is distance...


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