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The AAPG/Datapages Combined Publications Database

Showing 32,027 Results. Searched 191,754 documents.

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AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

...) indicates a reduction in interval velocity. A decrease in slope (toward the horizontal) indicates an increase in interval velocity. A sharp slope...


Petroleum Geologist and Exploration Geophysicist: Co-Ordination and Seismic Velocity

John D. Hale

CSPG Bulletin

... some effect on the velocity gradient. Examples are volcanic basalt flows and chert zones. 6. The presence of an extremely porous layer within...


Production Modeling for Velocity String Applications in Unconventional Wells

Suat Bagci, Tina Chang

Unconventional Resources Technology Conference (URTEC)

.... The effect of velocity string size and length on the performances of ESP and gas lift installed wells were studied. Gas slugging behavior was reduced...


Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)

Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave

Search and

...ion. Same improvement achieved with using common offset CIGs (Yousefzadeh et. al., 2011). To see the effect of the velocity accuracy on LSPSM, consider a ...


A Comparison of Depth-Conversion Methods in the Gulf of Mexico

Melvan D. Carter, Gary R. Hyatt

GCAGS Transactions

... the simplest constant-function approach to the "layer-cake" method to an average-velocity technique based upon seismic velocities, each method has...


AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods

Alan R. Huffman

AAPG Special Volumes

... by the slow decrease in the velocity gradient with depth. The other class of abnormal pressure mechanisms is not associated with the compaction process...


Pressure Analysis for Volume Fracturing Well in Tight Reservoirs Considering Dynamic Threshold Pressure Gradient and Stress Sensitivity

Zhongwei Wu, Chuanzhi Cui, Xiangzhi Cheng, Zhen Wang, Yingfei Sui, Xiaoyan Zhao

Unconventional Resources Technology Conference (URTEC)

.... In this paper, the dynamic threshold pressure gradient and permeability modulus are respectively utilized to characterize the low-velocity non-Darcy flow...


Combined Geophysical Methods for Investigating the Border Area of the Kamsko-Kinel Depression

Yu. A. Byakov, S. A. Shikhov

Petroleum Geology: A Digest of Russian Literature

... horizontal gradient with graphs of effective velocity for a reflecting horizon located below the clastic unit. On six profiles for which data...


Section 2: Improvement of Seismic Images of Complex Tectonic Structure in Deep Water with Research-Level Processing Sequences

John Miller and Roland von Huene

AAPG Special Volumes

... a time- and space-varying velocity model along the line. 4. NMO--removes the effect of the source-receiver separation by using the NMO equation...


Geoscience Applications to Economic Development of a Relatively Shallow, Low Gravity, Structurally Complex Eagle Ford Oil Development, Atascosa County, Texas

Lee Billingsley, Bill Layton, Luke Finger

GCAGS Transactions

.... Velocity values based on the drilling and geosteering of nine, widely spaced horizontal wells indicates that velocity is faster near the downthrown...


Delineation of Jonah field Using Seismic and Sonic Velocity Interpretations

Ronald C. Surdam, John Robinson, Zun Sheng Jiao, Nicholas K. Boyd III

Rocky Mountain Association of Geologists

... detail the horizontal and vertical distribution of velocity anomalies associated with Jonah Field. Interpretation of these velocity anomalies...


Mapping with Two-Dimensional Seismic Data: Part 7. Geophysical Methods

I. R. Gordon

AAPG Special Volumes

... that you deem appropriate. OTHER TYPES OF MAPS Velocity Gradient Maps A velocity gradient map is constructed at an intermediate step between...


Abstract: Multiattributes and Seismic Interpretation of Offshore Exploratory Block in Bahrain … A Case Study; #90254 (2016)

Suresh Thampi, Aqeel Ahmed, Yahya Al-Ansari, Ali Shehab, Ahmed Fateh, Anindya Ghosh, and Ghada Almoulani

Search and

... logs show an oil-water contact in the Jurassic Arab zone, which was confirmed by an oil gradient from reservoir pressure points. A quick post drilling...


Seismic Velocity Variations in San Joaquin Valley, California

Walter S. Olson

AAPG Bulletin

... of the horizontal or geographic gradient of velocity. Knowledge of the possible effect has of course been common for a long time. Westby (FOOTNOTE 3...


The Preparation of Seismic Depth Maps in Oil Exploration

A. E. Pallister

CSPG Bulletin

... of three components: 1, the velocity gradient across the area; 2, differential erosion on the Paleozoic surface; and 3, actual structure of the reflecting...


Advances in Depth Imaging Technology: Rock Physics Guided Migration of Seismic Data in 3D

Nader C. Dutta, Sherman Yang, Jianchun Dai

Indonesian Petroleum Association

...  Vnmo 1  2 (4) Here, Vh is the horizontal velocity, V0 is the vertical velocity and Vnmo is the surface seismic normal moveout velocity. Further...


ABSTRACT: Deepwater Depositional Phase Diagram: A Strategy for Predicting the Architecture of Deepwater Reservoirs Considering Slope Gradient and Clay Percentage; #90061 (2006)

Tim R. McHargue

Search and

... and then to erosional bypass; this is predicted by a leftward, horizontal path through the diagram. Conversely, the effect of decreasing gradient produces...


Chapter Ten-part 2: Depth Conversion

Leslie R. Denham, Dave K. Agarwal

AAPG Special Volumes

... velocity gradient, when all isovelocity surfaces are horizontal. This was first published by Peter Hubral (1977). In other cases, the true position...


Experimental Evaluation of a Generalized Suspended-Sediment Transport Theory

Guy Gelfenbaum, J. Dungan Smith

CSPG Special Publications

... horizontal velocity and thus zero horizontal momentum. Eventually, the particle accelerates until it has the same horizontal velocity as the surrounding...


The Geophysical Aspects of Abnormal Fluid Pressures

Edward B. Reynolds, John E. May, Alf Klaveness

Houston Geological Society

... of reflection geometry for a velocity analysis. 34 Figure 1c. Examples of velocity analyses from two offshore Louisiana areas. 35 Figure 2. Effect...


Gas Hydrates in Ocean Bottom Sediments

M. K. MacLeod

AAPG Bulletin

... in a localized region. The variables discussed are ocean bottom temperature, geothermal gradient, t ermal conductivity, heat flow, hydrate velocity, gas...


Seismic Anisotropy VTI Modeling and Mechanical Properties of Kerogen in Gas Shale, #42486 (2020).

Anggoro S. Dradjat, Agus Djamil, M. Firwan Aprizal

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... properties in both directions called mechanical anisotropy; measuring mechanical response on horizontal stratification is by using seismic P wave velocity...


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