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The AAPG/Datapages Combined Publications Database

Showing 59,878 Results. Searched 188,614 documents.

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Evaluation of possible gas microseepage mechanisms

Alton Brown

AAPG Bulletin

... of concentration on ascent velocity. Bubble velocity relative to surrounding water (solid line) was calculated from equation 3 using n = 4.65 (infinitesimal...


Simplicity at Its Best: Estimating Depth Uncertainty at the Wiriagar Deep Paleocene Field, Eastern Indonesia

Made Susantha, Imam S. Harun

Indonesian Petroleum Association

... TWT structure maps were converted to depth using seismic velocity cubes, and corrected to well markers using scaling factor map to get depth...


Consistent Structural Model Simulations for Volumetric Uncertainty Study

M. A. Lecour, P. Thore, R. Cognot

AAPG Special Volumes

... a correct velocity model, which is commonly not available in most complex structures. More than this, a simple stretching (depth = velocity time...


Application of 3

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Field Technique Design for Seismic Reflection Exploration

L. R. Denham

Dallas Geological Society

... to use amplitude, phase, velocity, and frequency information in a quantitative way, instead of the traditional approach of using only reflection time...


AAPG Memoir 76, Chapter 15: Forward Modeling of Log Response in Geopressured Formations Reveals Valuable Insights to the Various Pore-Pressure Prediction Techniques

J. C. Rasmus

AAPG Special Volumes

... pore-pressure equivalent mud weights vs. TVD RKB using a water depth of zero. The lines represent pore-pressure equivalent mud weights ranging from...


Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

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... correlation functions can consequently be inverted for 2D and 3D velocity structures. Body waves may also be extracted from SI of closely-spaced receivers...


Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)

Peter W. Cary, Albert Zhang

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... the velocity variations are more substantial, prestack depth migration would be more desirable ( Kristiansen et al., 2003, Miao et al., 2005). S-waves...


Full Use of Dipmeter Data for Geocellular Property Modeling in the McMurray Formation, Alberta; #41586 (2015)

Gregory S. Benson

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... algorithms. The workflow is as follows: 1. Create bed co-planarity “coherency” scores using moving depth windows in dipmeter data (Figure 1 and Figure 2...


Transformation of Resistivity to Pseudovelocity Logs: GEOLOGIC NOTE

Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs

AAPG Bulletin

.... Pseudovelocity logs transformed from resistivity log (R) by using three different scale functions of Figure 2. Resistivity (R) in ohm-m and transit time (TT...


Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)

Arnim B. Haase, Charles P. Ursenbach

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... of seismic waves. Velocity dispersion means velocities are functions of frequency. Frequency dependence of seismic velocities can be quantified...


Abstract: Seismic Expression of Normal Faults and Associated Structures

Martha O. Withjack

Houston Geological Society Bulletin

..., but also on the velocity and dip of the overlying strata. The observed dip of a fault decreases as the velocity of the strata directly overlying...


Rift-Related Structures and Their Seismic Expression: ABSTRACT

Martha O. Withjack

AAPG Bulletin

... fault surface, but also on the velocity and dip of the overlying strata. The observed dip of a fault decreases as the velocity of the strata directly...


Improving Petroleum System Analysis with Better Understanding of Seismic Input Uncertainties, #41235 (2013)

Ling Duan, Jianchang Liu, Richard Eisenberg

Search and

... velocity model building, time / depth conversion, amplitude characteristics and their implication on the lithological composition of formations, attribute...


A Practical Review of Migration Issues and Solutions; #40723 (2011)

Ian F. Jones

Search and

..., the method of velocity model building must be tailored to the type of depth migration algorithm we intend to use. We nowadays commonly have available...


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

E. W. Peikert

AAPG Special Volumes

... velocity data. Well data are used to determine interval velocity versus depth curves which reflect the normal compaction trends for various lithologies...


Woollybutt 2001: A Geoscience Odyssey

D. J. Hearty, M. A. Battrick

Petroleum Exploration Society of Australia (PESA)

... velocity field derived from Pre-Stack Depth Migration (PSDM) processing. Depth conversion was completed using 3 layers and a combination of PSDM...


3D Palaeo-Migration Pathway Analysis: An Example from the Timor Sea

G. Chen, K. C. Hill, N. Hoffman, G. W. O'Brien

Petroleum Exploration Society of Australia (PESA)

... fluid content of the rock and the increasing dominance of the matrix velocity. In this way, we can use assessments of velocity as a function of depth...


Abstract: Prestack Depth Migration with the Gabor Transform; #90211 (2015)

Yongwang Ma and Gary Margrave

Search and

... migration algorithm using the Gabor transform with application to the Marmousi acoustic dataset. The imaging results show a very promising depth imaging...


Gas Hydrates in Ocean Bottom Sediments

M. K. MacLeod

AAPG Bulletin

... of the hydrate are converted to two-way travel time using three typical velocity functions for deep marine sediments containing gas hydrates (proprietary...


Sedimentologic and Physical Oceanographic Evidence of a Shelf Edge Counter Current Off Guinea Bissau, Guinea and Sierra Leone

David W. McGrail

Journal of Sedimentary Research (SEPM)

... for the calculation of the Ekman number. Commonly, the scale of choice for E is a mean depth characterizing the area of interest. By using a horizontal scale...


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

... Technology VSP methodology has several key applications such as time versus depth relationship, interval and average velocity calculations, calibration...


Synthetic Seismograms from Vibracores: A Case Study in Correlating the Late Quaternary Seismic Stratigraphy of the New Jersey Inner Continental Shelf

Dominic Esker , Robert E. Sheridan , Gall M. Ashley , Jeffrey S. Waldner , David W. Hall

Journal of Sedimentary Research (SEPM)

..., and depositional sequence systems tracts. B) Bulk density and C) compressional wave velocity vs. depth. Velocity is plotted as the inverse transit time, in µs/ft...


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