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The AAPG/Datapages Combined Publications Database

Showing 7,921 Results. Searched 191,756 documents.

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Influence of Geological Factors on Longitudinal Seismic Velocities

B. B. Weatherby , L. Y. Faust

AAPG Bulletin

... sections increases with the geologic age of the beds. Less reliable evidence points to a similar relationship for limestone velocities. The velocity...


Settling Velocities of Quartz and Tourmaline in Eolian Sandstone Strata

James R. Steidtmann, Harry C. Haywood

Journal of Sedimentary Research (SEPM)

...Settling Velocities of Quartz and Tourmaline in Eolian Sandstone Strata James R. Steidtmann, Harry C. Haywood 1982 Vol. 52 No. 2. (June), Cumulative...


Characteristics of Velocity-Porosity Relationships in the Baturaja Limestone Reservoir: A Case Study in the South Sumatra Basin

Muhamad Noor Ali

Indonesian Petroleum Association

... reservoir. Over the past few years, several papers have presented experimental results of factors affecting elastic wave velocities in sandstone and a number...


Stratigraphic Traps Defined by Seismic Data: A Case Study


Indonesian Petroleum Association

... within the Lower Miocene Batu Raja Limestone and within some of the Middle Miocene sandstone reservoirs of the Main Member of the Cibulakan Formation...


Simple Models for the Stress-Dependence of Anisotropic Seismic Velocities in Fractured Rock; #120053 (2012)

Richard L. Gibson, Jr. and Kai Gao

Search and

... is a relatively low porosity sandstone (about 4.5%). The velocities measured by Benson et al. (2005) show that the sandstone is almost transversely...


Structure of the Platform Cover of Northeast Turkmenia

D. P. Kasatkin

Petroleum Geology: A Digest of Russian Literature

... are observed in two areas–the Pitnyak (in the northeast) and the Tuarkyr and boundary (Fig. 1) velocities are recorded. Local variations in these parameters...


Estimation of Total Organic Carbon (TOC) Content of Shale from AVO Inversion: A New Crossplot Approach Based on Zoeppritz Equations

Un Young Lim, Richard Gibson Jr., Nurul Kabir

Unconventional Resources Technology Conference (URTEC)

... of shale may contribute to detect higher TOC locations using surface seismic data, since changes in TOC influence P-wave and S-wave velocities...


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

E. W. Peikert

AAPG Special Volumes

... on the stacked sections to compute sequence-keyed interval velocities. Interval velocities can be smoothed between sequence boundaries on a rational...


The Geophysical Aspects of Abnormal Fluid Pressures

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

Houston Geological Society

... is not due to pressure but to the lithologic change from the Smackover limestone to the Norphlet sandstone. If pressures do exist within the Smackover...


Porosity Prediction Using Amplitude Mapping. Case of the Cretaceous M-2 Limestone Member of the Napo Formation, Ecuador

M. J. Serna

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... This formation has been subdivided in the Oriente basin into the following members: "T" sand­ stone, "U" sandstone, "A" limestone and "M-2" limestone...


Extended Abstract: A Geological 3D Velocity Model in Keathley Canyon and Walker Ridge, Gulf of Mexico

Sharon Cornelius, Pete Emmet

GCAGS Transactions

... from mudlogs, has been created. All forms of sonic information were transformed into interval velocities versus depth (in feet) and loaded into Vel...


Seismic Velocity Variations in San Joaquin Valley, California

Walter S. Olson

AAPG Bulletin

... it is necessary to know, with considerable accuracy, the velocities in the sedimentary section. To obtain such data, the Cooperative Well Velocity Group...


Reservoir Studies and Inversion of Seismic Traces: ABSTRACT

E. Rainon

AAPG Bulletin

... in a series of reflection coefficients. Reflection coefficients are simple functions of velocities and densities. A transformation of the series...


Ultrasonic pulse velocities and dynamic elastic constants of sandstones from the Semanggol Formation, Beris Dam, Kedah Darul Aman

J. K. Raj

Geological Society of Malaysia (GSM)

... and shear waves through the sandstones to increase with decreasing grain size; the pebbly sandstone with velocities of 2.210, and 5.171, km...


A Case History of Geoseismic Modeling of Basal Morrow-Springer Sandstones, Watonga-Chickasha Trend: Geary, Oklahoma--T13N, R10W: Section 3. Stratigraphic Models from Seismic Data

William A. Clement

AAPG Special Volumes

... difficult than the first because this procedure involved assigning interpolated interval velocities to sandstone, shale, siltstone, and limestone units...


Subsurface Geology of North Carolina-South Carolina Coastal Plain from Seismic Data

William E. Bonini , George P. Woollard

AAPG Bulletin

... on the adjoining Piedmont Province to determine seismic velocities of specific rock types, thus aiding the assignment of lithologic types to basement...


Permian Red Chert-Pebble Conglomerate in Earp Formation, Southeastern Arizona

David K. Rea , Donald L. Bryant

AAPG Bulletin

... in southeastern Arizona and southwestern New Mexico is about 1,000 ft (300 m) of alternating limestone, sandstone, and siltstone. Below the Earp...


Trough Cross-bedding

George R. Wulf

Journal of Sedimentary Research (SEPM)

... Fort Union Formation crops out over large areas in northeastern Wyoming and consists of claystone, siltstone, sandstone, and lenses of limestone...



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

Vidar Storvoll, Knut Bjrlykke, Nazmul H. Mondol

AAPG Bulletin

... with interbeds of cemented sandstone, limestone, or dolomite (Dalland et al., 1988), resulting in black shale dots located at the sand line and/or between...


3-D Seismic Prospecting for Entrada Sandstone Reservoirs on the Southeastern Flank of the San Juan Basin, New Mexico

David J. Massé, R. Randy Ray

Rocky Mountain Association of Geologists

... Formation (Fig. 2). Oil is trapped in the uppermost Entrada Sandstone, with impermeable Todilto Limestone and anhydrite forming the seal. Entrada...


Extended Abstract: A Review of the Leading Technologies That Can Make a Difference in the Search for and Production of Hydrocarbons

Terry Engelder, Yaneng Zhou

Africa Energy and Technology Conference, 2016

... stratigraphic package. The Marcellus stratigraphic package includes a variety of limestone and shale easily identified using a gamma ray. The major break...


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