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The AAPG/Datapages Combined Publications Database
Showing 4,226 Results. Searched 200,357 documents.
Vector Constraints on Quaternary Deformation of the Western United States East and West of the San Andreas Fault
J. Bernard Minster, Thomas H. Jordan
Pacific Section SEPM
....) The integral of the directional derivative along the path is simply the difference of the velocities at the endpoints: Similarly, \ C P summarizes...
1984
Shock Filter: A Powerful Tool to Map Basement Blocks and Faults in the Peace River Arch of Alberta Based on Magnetic Signatures, #41293 (2014)
Hassan H. Hassan, Janine Weber
Search and Discovery.com
.... (2002) is as follows: where I represents the image and Ix and Ixx represent the first and the second directional derivatives of the image I...
2014
Sole Marks in Siltstone of Nonturbidite Origin: ABSTRACT
Wayne A. Pryor, Jim L. Barr
AAPG Bulletin
...Sole Marks in Siltstone of Nonturbidite Origin: ABSTRACT Wayne A. Pryor, Jim L. Barr 1968 546 546 52 3. (March) Sole marks and other directional...
1968
Directional Survey Problems, East Wilmington Oil Field, California: REPLY
John N. Truex
AAPG Bulletin
...Directional Survey Problems, East Wilmington Oil Field, California: REPLY John N. Truex 1972 167 167 56 1. (January) Truex, J. N., 1971, Directional...
1972
Research on buried hill fracture prediction based on sweet spot attributes of gradient structure tensor in dominant frequency band
Min Gong, Bo Wang, Lin Wang, Rui Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... the seismic signal volume u (x, y, z) of a three-dimensional data, and the directional derivative vectorβ u (x, y, z) of each point is: g = βu(x, y...
2024
Regional Geophysical Mapping of the Sub-Phanerozoic Basement, Eastern Southern Saskatchewan and Southwestern Manitoba
Jiakang Li and Igor Morozov
Saskatchewan Geological Society
..., as the source response of the gravity field (point-source) is by one order lower than that of the magnetic field (dipole), the first vertical derivative...
2006
Middle to small-scale fracture detection in fault-controlled Karstic reservoirs
Xiping Sun, Xuan Li, Xin Zhang, Guangcheng Xu, Yongcai Yu, Ming Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... β« π· π₯π‘ β« π· π₯π¦ π‘ π(π‘, π₯, π¦) = [ β« π· π₯π‘ β« π·2 β« π· π‘π¦ ] (1) π₯ 2 β« π· π₯π¦ β« π· π‘π¦ β« π· π¦ Where π·2 is the square of the first derivative of seismic amplitude along t-axis, y-axis, or z...
2022
Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)
Peter W. Cary, Albert Zhang
Search and Discovery.com
..., 1290-1304. Wang, Chengshu 2004, Accurate spatial directional derivative: Antialiasing Kirchhoff migration: Geophysics, 69, 811-816. Zhang, Y., S. Gray, and J...
2015
ABSTRACT: Imaging Structural Geology with Dip and Directional Dip, by Aqrawi, Ahmed A.; Boe, Trond Hellem; #90141 (2012)
Search and Discovery.com
2012
High-fidelity full-waveform imaging via impedance inversion
Feng Chen, Yu Zhang, Lian Duan, Weishan Han, Yilong Qin, Qianggong Song
International Meeting for Applied Geoscience and Energy (IMAGE)
... with reflectivity is necessary, the impedance image can be converted to a scalar reflectivity (Figure 1d) by taking a directional derivative of our impedance...
2023
Pressure Transient Testing: Part 9. Production Engineering Methods
W. John Lee
AAPG Special Volumes
... -- Directional permeabilities between tested well pairs -- Average porosities in the areas influenced by the tests Fig. 2. (a) Derivative type curve...
1992
Paleocurrents and Oceanography: ABSTRACT
George DeVries Klein
AAPG Bulletin
... that directional current structures identify the provenance, transport direction, basin architecture, and paleoslope of sedimentary sequences. Numerous examples...
1965
Horizontal Drains in Deep, Tight Gas Reservoirs: Tambora Field's Experience and Outlook
Frederic Febvre, Didier Caie, Sugimin Harsono, Januar Wirawan
Indonesian Petroleum Association
... face control). Directional equipment failures including 1 motor broken during the 8"1/2 phase, requiring a technical side-track, and 4 MWD failures...
2000
Numerical Upscaling of Discrete Fracture Networks for Transient Analysis
Vincent Artus
Unconventional Resources Technology Conference (URTEC)
..., the log-log plot of rate-normalized pressure derivative vs. material balance time is expected to display a half slope corresponding to the linear flow...
2020
Evidence for Strike-Slip Faulting in the Smackover Formation of Northeast Texas and South Arkansas and its Geological Implications
James R. Turner
GCAGS Transactions
..., wells, and seismic line 1. B. Surface drainage and lineaments. C. Sixth vertical derivative gravity map modified with directional first derivative...
2001
A Midland Basin operators approach to data collection and current best practices for mitigating induced seismicity
Murray Dighans, Ben Davis, Andrew Quarles Van Ufford, Ryan Kavanagh, Peter Hennings
International Meeting for Applied Geoscience and Energy (IMAGE)
... by injecting in ways that utilize faults and natural fractures as permeable and directional elements, or by injecting above the fracture extension...
2023
Forced Fluid flow and Diagenesis in Porous Reservoirs Controls on the Spatial Distribution
J. R. Wood, T. A. Hewett
Special Publications of SEPM
... geometries, since the distribution of the altered assemblage is proportional to the directional derivative of the function(s) describing the structures...
1986
Extracting Large-Scale Fracture Networks; #41818 (2016)
Ayon Kumar Dey
Search and Discovery.com
... computing the reflectivity as the vertical derivative of the impedance. The polarity (standard/reverse) of the input seismic determines whether a positive...
2016
Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration
Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux
Indonesian Petroleum Association
..., 3) using wave propagation direction vectors, 4) picking highly reflective interfaces and applying directional absorption, or 5) applying derivative...
2008
Improved Permeability Assessment Using Directional Rock Fabric Quantification
Search and Discovery.com
N/A
Placement Matters: Improving Survey Accuracy by Using Continuous Directional Data and Drilling Parameter Settings; #41856 (2016)
Ed Stockhausen, Richard Ball, Pete Clark, Richard Mongan, Philip Rice
Search and Discovery.com
...Placement Matters: Improving Survey Accuracy by Using Continuous Directional Data and Drilling Parameter Settings; #41856 (2016) Ed Stockhausen...
2016
Improving continuity of fault images using directional smoothing and edge-enhancement filters
Search and Discovery.com
N/A
Magnetic Grain Fabric of Sedimentary Rocks: ABSTRACT
H. Ab Iorwerth
AAPG Bulletin
... anisotropy indicates the dimensional grain fabric of natural rocks. Although the directional results are easily interpreted, the quantitative descriptive...
1970