Shear Fault-bend Folding

John Suppe, Christopher D. Connors, Yikun Zhang

AAPG Special Volumes

... by about 1 (with a ramp angle of 17, the no-shear theory predicts a front-limb dip of 18.8, whereas the observed frontlimb dip is 18). This discrepancy...

Abstract: Integrated Imaging of VSP and OBS Data in the Angle Domain; #90254 (2016)

Leon Hu

Search and Discovery.com

... sets of ADCIGs with similar dip-angle contributions. The integrated imaging of two data sets in the angle domain was successfully applied to both 3D...

Use of Bed-Form Climb Models to Analyze Geometry and Preservation Potential of Clastic Facies and Erosional Surfaces

D. K. Larue , P. A. Martinez

AAPG Bulletin

... climbing ripple, occurs where the angle of ripple climb (^agr) is equal to the dip of the stoss slope (ß) of the advancing ripple. Figure 2 shows...

Abstract: Re-Interpretation of the North Flank of Qarun "A" Field (Western Desert, Egypt), Based on SCAT Analysis and Reprocessing of the A-17 Dipmeter, by James D. Morse; #90072 (2007)

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Combination of Deep-Reading and Near-Wellbore-Scale Measurement in Accessing Thin Layer Facies of a Carbonate Reservoir, #42511 (2020).

Adrean Pudyaksa, Hendri Harsian, Takefumi Shibuya, Ni Made Wilasari, Olivia Azwar, Ihsan Taufik Pasaribu,

Search and Discovery.com

... resistivity image result in the lateral section was used to identify the structural tendency and define the actual dip angle along the wellbore...

Geometric Models of Listric Normal Faults and Rollover Folds (1)

WILLIAM F. DULA, JR.

AAPG Bulletin

... at an angle, (Greek) alpha, to a line normal to the regional dip (Figure 3). A simple graphic construction (Figure 4) for he inclined-shear model...

Quantifying Crack Properties of Source Rocks from Elastic Stress Sensitivity

Jihui Ding, Anthony C. Clark, Tiziana Vanorio, Adam D. Jew, John R. Bargar

Unconventional Resources Technology Conference (URTEC)

...-to-tangential compliance ratio and maximum dip angle relative to bedding. Our modeling results confirm that the compliance ratio is sensitive to fluid...

Determination of Attitude of Beds in Drill Holes by Inclinometer

T. Rokosh

Petroleum Geology: A Digest of Russian Literature

... of an inclinometer. The angle of dip (∝) of the oil-bearing horizon was determined in well 1. The gas-oil and oil-water contacts were known from other studies...

Abstract: Foreland Structure - Beartooth Mountains, Montana and Wyoming, by D. M. Clark; #90952 (1996).

Search and Discovery.com

Trishear Kinematic Modeling of Structures, with Examples from the Neuqun Basin, Argentina

Richard W. Allmendinger, Toms Zapata, Ren Manceda, Francisco Dzelalija

AAPG Special Volumes

..., (3 and 4) X and Y coordinates of the tip line, (5) P/S, and (6) trishear angle. Because no changes in fault dip are permitted, the fold produced...

Abstract: Diffraction Imaging Using Multiplication Imaging Condition; #91204 (2023)

Dongliang Zhang, Constantine Tsingas

Search and Discovery.com

... of diffraction imaging using the multiplication imaging condition. METHODS The key idea is that discontinuity responses are comprised of all dip angle ranges...

Some Applications of CT-Scanner in Petroleum Engineering

Septi Anggraeni, Indra Jaya, Bambang Widarsono, Hari Hardiman, Pamuji, Alit Gurmilang

Indonesian Petroleum Association

... a bedding plane is visible (as seen in Figure 3 ), its dip angle can be measured directly from the scout-view (on monitor or on a printed image). However...

Prediction of Normal-Fault Geometries--A Sensitivity Analysis

Martha Oliver Withjack, Eric T. Peterson

AAPG Bulletin

...-Chevron and dip-line constructions of Williams and Vann (1987) conserve cross sectional area. Second, case studies have shown that inclined simple shear...

Slide Rule Seismic Computations

Robert H. Mansfield

Oklahoma City Geological Society

..., which will also make it assume the correct dip angle, z, from the horizontal. The distances "h" and "R" are read End_Page 313...

Unlocking Flexure Oil Pay in the ESE Flank Associated with Mature Peripheral Waterflood in BK Field

Henrikus Panjaitan, Randy Agra Pratama

Indonesian Petroleum Association

... to the conclusion that classic piston-like waterflood displacement might not be a suitable approach since * the calculated Dietz flood front angle...

Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study

Naoshi Aoki, Shogo Narahara, Akihisa Takahashi, Tsukasa Nishiki

Indonesian Petroleum Association

...Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study Naoshi Aoki, Shogo Narahara, Akihisa...

Graphical Template for Determination of Dip from Aerial Vertical Photographs: GEOLOGICAL NOTES

Richard L. Threet

AAPG Bulletin

... that: EQUATION (1) EQUATION (2) End_Page 1010------------------------------ where ^agr = angle of apparent dip in degrees h = vertical distance, on optical...

Subsalt Imaging — Coherent Noise Removal and Steep Dip Enhancement in Support of Subsalt Exploration

Search and Discovery.com

Measurement of Dip Angles on Aerial Photographs: GEOLOGICAL NOTES

Louis Desjardins

AAPG Bulletin

..., and actual dip slopes on the rocks or in the topography are commonly seen. Any attempt to estimate the angle of dip in these cases, will usually...

"Jacob Staff" and Measurements of Stratigraphic Sequences: GEOLOGICAL NOTES

J. A. Broggi

AAPG Bulletin

.... Whatever the direction of the measurement, the clinometer angle reading should be equal to the stratum dip Sd, that is, 30° in Figure 1. 3. Vertical strata...

Abstract: Robust Multiple Attenuation Workflow and Flexible Anisotropic Tomography for Better Imaging. Shallow Water Case Study, Gulf of Suez; #90319 (2018)

Ahmed Khaled Ali, Mahmoud Ahmed, Matthias König, Tillmann Roth, Ivica Mihaljevic, Sameh Abdel-Basset, Mahmoud Ouda, Wessam Saleh, Tarek El-Melegy, Hesham Abu El-Saad

Search and Discovery.com

... on only few near offset traces because the critical reflection angle is usually reached quickly. Unfortunately, this limits the effectiveness of any...

Complementary Structural Analysis of Channelized Turbidites in the Offshore Niger Delta: Integration of 3D Seismic Data, Inversion of Extra-Deep Azimuthal Resistivity Data, Gamma and Density Borehole Images, #42352 (2019).

Chidi N. Ndokwu, Stephen A. Morris, Johanne Paludan, Victor Okowi, Olatunbosun Olagundoye, Nsikak Umoren, Arnaud Delpeint, Onyeka Ndefo, Adekunle Agbejule, Richmond U. Ideozu, Jones E. Acra,

Search and Discovery.com

... refers to the angle between a line normal to the bedding plane and the wellbore axis measured in their common plane. Figure 4. Cumulative dip magnitude...

A New Parallel Fold Construction Method from Borehole Dip for Structural Delineation; #41969 (2016)

Tetsushi Yamada, Isabelle Le Nir, Eric Moscardi, Arnaud Etchecopar

Search and Discovery.com

... the stratigraphic polarity for each dip (normal or reverse, as this affects the resulting cross section), and estimate the possible geological structure...

Graded Beach Gravels as Palaeowind Indicators

John McManus

Journal of Sedimentary Research (SEPM)

... period but the incident angle of wave approach increased to 20-25° the ridges suffered from much stronger curvature. The deflection began almost...

Sediments and Sedimentary Structures of a Beach-Ridge Complex, Southwestern Shore of Lake Michigan

Gordon S. Fraser, Norman C. Hester

Journal of Sedimentary Research (SEPM)

... bipolar dip directions; view is perpendicular to true dip directions; d) large-scale, low-angle planar cross-sets of upper shoreface (bar) deposits; e...