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The AAPG/Datapages Combined Publications Database

Showing 28,873 Results. Searched 196,956 documents.

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Ascending

Bed Configurations

Gerard Middleton, John B. Southard

Special Publications of SEPM

... velocity for a given discharge is more complicated, because a variable volume of It's generally accepted, water can be stored in the sump. however...

1984

Seismic Modelling in 3D for Migration Testing

Search and Discovery.com

... reflecting surfaces, with arbitrarily variable reflection coefficients, embedded in a 3D medium characterized by a v ( z ) background velocity...

2013

Abstract: 3D Seismic Imaging in the Pakistan Foothills: A Case History; #90172 (2014)

Victor Dolgov, Rob Vestrum, Jon Gittins, Géza Wittman

Search and Discovery.com

... locations and red indicates shot locations. Variable shot-point coverage depends on surface conditions. (b) Elevation map. Elevation ranges from 500 m (blue...

2014

Abstract: P-wave and S-wave Near-surface Characterization in Northeast British Columbia (NEBC); #90174 (2014)

Liliana M. Zuleta and Don C. Lawton

Search and Discovery.com

... to calculate the depth and velocity of the layers that were detected with the offset of 1500 m used during the acquisition. The objective...

2014

Latest imaging advancements in Suriname shallow waters

Jing Yang, Zhihua Sun, Zhihua Su, Bei Hu, Nicolas Chazalnoel

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The final TLFWI velocity model provides greater details of the shallow geologic features. The fast velocity and variable thickness of the carbonate...

2023

Shallow Seismic Survey on Weeks Island, Louisiana ... an Attempt to Define "Top of Salt"

G. L. Kinsland , A. W. Rutter III

GCAGS Transactions

... impedance contrast exists at the clastic sediment/salt interface by virtue of the strong velocity contrast between the shallow clastic sediments...

1994

The Hydraulic Equivalence of Mica: DISCUSSION

William A. Burroughs

Journal of Sedimentary Research (SEPM)

... process or the variable responsible. The combined supposition, however, that one hydraulic v riable, fall velocity, is the one that ultimately controls...

1985

"Basement" to East Coast Continental Margin of North America

M. A. Mayhew

AAPG Bulletin

... of seismic layers of velocity greater than 4.5 km/sec., and referred to as "basement." The configuration of this surface of the East Coast continental...

1974

Reefs and Wave Action: ABSTRACT

Michael E. Philcox

AAPG Bulletin

... relations. Wave resistance as a criterion is therefore rejected, but as a variable characteristic, differing from one buildup to the next, it allows each...

1970

Abstract: Effects of Lateral Heterogeniety Scales on AVO Trends; #90174 (2014)

Ramin Saleh, Emmanuel Bongajum, and Bernd Milkereit

Search and Discovery.com

... with offset/angle (AVO/AVA) depend on changes in the P-wave velocity(Vp), S-wave velocity (Vs), density and Poisson's ratio at a plane interface...

2014

A Nigerian Renaissance: Renewed interest in Africa's largest oil producer

John Balch, Matt Lamont, Polarcus, DownUnder GeoSolutions

GEO ExPro Magazine

... unaliased, with variable depth sampling output from the migration. There were no assumptions made about lateral or vertical velocity variations, apart...

2014

Angolan Kwanza Basin … Expanding Proven Opportunities

Madhurima Bhattacharya, Harrison Moore

GEO ExPro Magazine

..., and time-lag full-waveform inversion (TLFWI) to produce a more accurate velocity model. The net result is enhanced Pre-Salt imaging and better-defined...

2022

The Generation of Scour Marks Near Obstacles

Peter D. Richardson

Journal of Sedimentary Research (SEPM)

... variables--that is to say, the transport depends not only on the range of values of fluid velocity, for example, but also upon the sequence in which...

1968

Structure of Argentine Continental Margin

William J. Ludwig , John I. Ewing , Maurice Ewing

AAPG Bulletin

... this report. STRUCTURE SECTIONS The structure sections are composed of layers which are correlated mainly on the basis of seismic velocity...

1968

UK Continental Shelf: An Evolution in 3D Seismic Imaging of the Central North Sea

Matthew Dack, Gregor Duval, CGG

GEO ExPro Magazine

... reliable velocity model to date for accurate depth imaging, it was calibrated to 10 regional structural horizons and more than 200 wells. The key...

2021

Phase-encoded waveform inversion for multiples

Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

... reflections. However, if the initial model is strongly biased from the true velocity, the increasing nonlinearity generated by multiples in the data can cause...

2022

Least-squares RTM with shifted total variation regularization for depth imaging of sparse short-offset seismic data

Toktam Zand, Andrzej Gorszczyk, Ali Gholami, Hasan Ghasemzadeh, Alison Malcolm

International Meeting for Applied Geoscience and Energy (IMAGE)

...-resolution and stable imaging in the presence of rough migration velocity models. We demonstrate the performance of our method using a short offset academic...

2022

Well Management Strategy Through Integrated Production Modeling: Study Case Well B-5

Budi Khoironi, Amega Yasutra, Dedy Irawan

Indonesian Petroleum Association

... of flux limit to replace pressure drawdown limit since velocity of produce fluid through sand screen is the main variable affecting sand control failure...

2022

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