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The AAPG/Datapages Combined Publications Database

Showing 2,007 Results. Searched 200,636 documents.

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Lower Cretaceous Muddy Sandstone in the Northern Rockies

George R. Wulf

Wyoming Geological Association

... South Dakota is an erosional derivative of the continental Dakota Sandstone. The shoreline can be mapped to an accuracy of two or three miles in spite...

1968

Pressure Transient Testing: Part 9. Production Engineering Methods

W. John Lee

AAPG Special Volumes

..., such as homogeneous acting, naturally fractured, layered, or hydraulically fractured. Derivative type curves (basically the slope of a plot of pressure...

1992

Jurassic Age of Franciscan Formation South of Panoche Pass, California: GEOLOGICAL NOTES

Paul Enos

AAPG Bulletin

... reflects lamination of the derivative rock. Where bedding of the derivative rock is not obscured, it parallels the poorly developed, contorted schistos...

1963

Abstract: Time-Frequency Representation of Microseismic Signals using the Synchrosqueezing Transform; #90187 (2014)

Roberto H. Herrera, Jean-Baptiste Tary, and Mirko van der Baan

Search and Discovery.com

... in the b-dimension can be neglected, then the instantaneous frequency ωs (a, b) can be computed as the derivative of the wavelet transform at any point...

2014

Abstract: Regular Grids Travel Time Calculation … Fast Marching with an Adaptive Stencils Approach; #90187 (2014)

Zhengsheng Yao, Mike Galbraith, and Randy Kolesar

Search and Discovery.com

... and then we present a new finite difference scheme that uses a directional derivative for the rectangular grid size and finally we give examples...

2014

Reducing Uncertainty in Subsalt Interpretation: A Non-Seismic View from Integration; #40508 (2010)

Markus H. Krieger and Oliver Geisler

Search and Discovery.com

..., wavelength filters, upward continuations, etc. As an example, the second vertical derivative (SVD) of gravity data can be utilized as a first...

2010

Integration of Dynamic Data into Characterization of the Tengiz Reservoir: Tengiz Slope, #50399 (2011)

Kymbat Dagistanova, A. Aitzhanov, D. Belanger, P. Bateman, R. Camerlo, R. Fitzmorris, M. Hui, G. Jacobs, G. King, C. Laidlaw, W. Narr, Y. Pan, W. Peake, M. Shook, M. Skalinski, M. Sullivan, T. Tankersley, D. Tolessin, A. Yessaliyeva, A. Zhumagulova,

Search and Discovery.com

... Pulse test between slope wells Region 1 Region 3 Actual pressure derivative Simulated pressure derivative Region 4 No Response Pressures...

2011

Scaling Relationships in Fluvial Depostional Systems, #30245 (2012)

Kristy Milliken, Mike Blum, John Martin

Search and Discovery.com

... Drainage Basin: 75,700 km2 Milliken et al. (2012) AAPG Annual Meeting FLUVIAL SCALING RELATIONSHIPS Bankfull Discharge (m3/s) Derivative Relationship...

2012

Application of the Instantaneous Quality Factor (Q) in the Characterization of the Austin Chalk and Eagle Ford Shale, South Texas, #41781 (2016).

Osareni Ogiesoba

Search and Discovery.com

... coefficient = 0.96 Number of attributes Attributes Quality factor Q Gamma ray Derivative of instantaneous amplitude Amplitude-weighted cosine of phase...

2016

Petrophysical Characterization of a Clastic Reservoir in the Middle Magdalena Valley Basin in Colombia Using Artificial Neural Networks and Seismic Attributes, #20440 (2018).

Ursula Iturraran-Viveros and Andres Munoz-Garcia,

Search and Discovery.com

... detection, envelope, edge evidence (from amplitude contrast), AVO and First derivative = ds(t)/dt. According to the Gamma test for this data set the best...

2018

High-Resolution Three-Dimensional Water Saturation Prediction - A Case Study from Offshore Nile Delta; #42206 (2018)

Islam A. Mohamed, Ahmed Hosny, Abdulrahman Ali Mohamed

Search and Discovery.com

...°) in addition to full angle stack seismic volume. Prior the inversion, a negative of the second derivative and fourth order derivative attributes were...

2018

Evaluation of the Hydrocarbon Potential of the Inland Basins of Nigeria: An Example of an Integrated Geological, Geophysical, Geochemical and Remote Sensing Study of Frontier Basins; #11223 (2019)

Mazadu Baku, Zeev Berger, Henri Ohen, Luigi Clavareau

Search and Discovery.com

... shown in Figure 2A is a derivative product known as the Analytical Signal. This image was used to define the structural fabric of Bida and Sokoto basins...

2019

Huff-n-Puff Gas Injection Performance in Shale Reservoirs: A Case Study From Duvernay Shale in Alberta, Canada

H. Hamdi, C.R. Clarkson, A. Ghanizadeh, S.M. Ghaderi, A. Vahedian, N. Riazi, A. Esmail

Unconventional Resources Technology Conference (URTEC)

... such as the Duvernay. Operators are increasingly focused on EOR techniques for this purpose. Gas injection is an EOR technique that can be used...

2018

Gravimetric Exploration in the Edwards Trend Area of South Texas

Maynard P. Jones

South Texas Geological Society Special Publications

...-called “profile”, “grid-residual” or “second derivative” techniques. This entire family of techniques depends upon the same fundamental concept...

1962

Holly Beach Revisited

Wilford Lee Stapp

South Texas Geological Society Special Publications

... accumulations. Figure 1. Location of Holly Beach Field, Cameron County, Texas. The Holly Beach Field area shows up as a slight minimum on derivative...

1986

Holly Beach Revisited

Wilford Stapp

Bulletin of South Texas Geological Society

... of this or similar type accumulations of gas. The Holly Beach Field area shows up as a slight minimum on derivative gravity maps, and it was up to seismology...

1983

Determination of Permeability by Resistivity Logging

L. A. Buryakovskiy

Petroleum Geology: A Digest of Russian Literature

... error of a function equals the product of the maximum absolute error of the argument times the derivative of the logarithm of the function. Thus, we...

1959

Age of the Barnett (Lower Bend) Shale of Central Texas: GEOLOGICAL NOTES

Raymond C. Moore

AAPG Bulletin

... of elements in the fauna of the Bend as a whole that are evidently derivative from the Mississippian and are more or less strongly suggestive...

1922

Multiwell Transient Model for Fractured Horizontal Wells with Complex Geometries

Vincent Artus

Unconventional Resources Technology Conference (URTEC)

... cells (figure 13). Due to the low permeability, the flow remains transient linear for a very long time (1/2 slope derivative on the diagnostic plot...

2023

Signposts to a Robust Liquid LNG Market

Bernadette Cullinane, Susan Sakmar, Nye Hill

Australian Petroleum Production & Exploration Association (APPEA) Journal

... of the Brent and WTI graphs (Figs 2, 3) suggests that: (1) The profile of commodity trading evolves as players seek to leverage the secondary, derivative...

2019

A Profile of Structural Gravity Survey on the North Sturgeon Lake Field

W. F. Stackler

CSPG Bulletin

... PROFILES End_Page 277------------------------ procedure, such as the calculation of vertical gradient involving second derivative calculation...

1959

Complex Geomodeling: Dayung Field a Fractured Pre-Tertiary Reservoir in the Southern Sumatra Basin, Indonesia

Rita Achiat, Joel Guttormsen, Redo Waworuntu

Indonesian Petroleum Association

... 12). A second derivative of the top basement structure map was produced to identify areas of rapid dip change. The seismically interpreted faults were...

2009

Havent I Seen That Somewhere Before?

David Sagi, Simon Campbell, Peter Webb

GEO ExPro Magazine

.... To highlight the textural character, the analytic signal (also known as total derivative) of the gridded gravity and magnetic data is presented...

2016

Mapping Sand Fairways and Salt Structures Using Modern Techniques Applied to South Louisiana Gravity Data [Abstract]

Shawn T. Mulcahy,, Paul N. Lawless

New Orleans Geological Society

..., whereas the expanded section containing the thickest sands may be too deep to drill economically. Lineations interpreted from the horizontal derivative...

2003

Structural Geology of Upper Cretaceous and Lower Tertiary Rocks Near the Nacimiento Fault, Northwest of Lake Nacimiento, California

Victor M. Seiders

Pacific Section SEPM

... derivative, "Sur-Obispo composite terrane" (Vedder and others, 1983). First, SurObispo is an abbreviation of two place names (Point Sur and San Luis...

1986

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