Nomographic Solutions of Dip Computation

W. A. Visser

AAPG Bulletin

... and the vertical diameter. On the chord in the second quadrant the scale for the reduced dip has been plotted in such a way that the point tan 0 = 0 lies...

Abstract: Nisku Multiple Attenuation with Interpolation and Sparsity: A Case Study; #90172 (2014)

Lee Hunt, Scott Reynolds, Mark Hadley, Scott Hadley, Mike Perz, Ye Zheng

Search and Discovery.com

... is now common in high resolution Radon Transforms, and these modern transforms are now widely accepted as superior to previous moveout based methods...

Abstract: Regular Grids Travel Time Calculation … A Practical Huygens Wavefront Expansion Approach; #90187 (2014)

Zhengsheng Yao, Mike Galbraith, and Randy Kolesar

Search and Discovery.com

...the first term is the plane wave approximation and the second term is a curvature correction. With further coordinate rotation ...

Wave scattering by the formation velocity perturbation surrounding a fluid-filled borehole

Zhou-Tuo Wei

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the undisturbed formation and the phase of the scattering wave reflects the positive and negative velocity variations under the Born approximation...

How to Make Velocity Corrections

John W. Daly

AAPG Bulletin

...------------------------------ This is a valid approximation in the case where the values of dip are small, not more than 3°-5°. Even with these magnitudes the effect...

Imaging two-dimensional transition zone seismic data in geologically complex areas using a highly heterogeneous data acquisition configuration

Hussain I. Hammad, Valmore Celis Franco

International Meeting for Applied Geoscience and Energy (IMAGE)

... are coupled impact the radiated Second International Meeting for Applied Geoscience & Energy 10.1190/image2022-3745764.1 Page 3374 © 2022 Society...

Elastic full-waveform inversion using OBN data acquisition

Denes Vigh, James Xu, Xin Cheng, Bing Bai

International Meeting for Applied Geoscience and Energy (IMAGE)

... to build detailed velocity models over the past ten years. Most of these projects used pressure data and an acoustic approximation with the assumption...

III Columbia Oil & Gas Investment Conference: Conventional & Unconventional Hydrocarbon Resources - Abstracts

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... filtering and Surface Related Multiple Elimination (SRME). Tau-p filtering fails because the moveout of primaries and multiples is too complex...

Decoupled approximation of qP- and qSV-wave in attenuated TI media

Rong Huang, Zhiliang Wang, Guojie Song

International Meeting for Applied Geoscience and Energy (IMAGE)

... errors during approximation. Second, based on the approximate qP- and qSV-wave phase velocities, we derive the corresponding qP- and qSV-wave equations...

Relative Impedance Inversion of Seismic Traces by Means of Complex Trace Attributes (CTA Inversion) … 40 Years On!, #42179 (2018).

Kurt Grubbe, Sean McQuaid

Search and Discovery.com

... significance an approximation of reflectivity by a single a spike is a good remedy. In order to invert a complex seismic trace, we can assume the geological...

Three-Dimensional Seismic Analysis in the Characterization of a Giant Carbonate Field, Onshore Abu Dhabi, United Arab Emirates

Peter Melville, Omar Al Jeelani, Saeed Al Menhali, Jürgen Grötsch

AAPG Special Volumes

... northeast-southwest. It is about 30 km long and 10 km wide, with a relief of more than 180 m. Reservoir dip is 35 on the western flank, 23...

Improving Structural Imaging

Svein-Erik Sjulsen, Chris Stevens

GEO ExPro Magazine

.... Lofoten, a chain of islands facing the Norwegian Sea, is famous for fabulous scenery second to few places in the world. Successful drilling further south...

3-D Design Philosophy – Part 2: Target Depth, by Bob Hardage, #40662 (2010)

Search and Discovery.com

The Role of Regional Seismic Surveys in the Exploration of the North West Shelf

J. Ostby, C. Johnston

Petroleum Exploration Society of Australia (PESA)

... this noise. However, dip-moveout (DMO) is a very powerful tool for diffraction energy removal - by limiting the dip angle much of the energy is filtered...

Amplitude inversion of OBS direct arrivals for seabed elastic properties

James Gaiser, Moacyr de Souza Bazerra, James Simmons

International Meeting for Applied Geoscience and Energy (IMAGE)

... (m/s) VS (m/s) VS (m/s) ! (kg/m3) 0 1500 0 0 1.00 1000 1595 531.667 265.833 1.75 1250 1850 925 462.5 1.85 1500 1950 1125.8 650 1.95 Second...

Abstract: Automation of Dip Picking „ New Approaches to Dip Evaluation and Interpretation;

Isabelle Le Nir, Josselin Kherroubi, Carlos Maeso, Nicolas Veron

Search and Discovery.com

... are automatically extracted from the borehole image using dip trends and an A-contrario algorithm, second a classification of layers is proposed based...

Quantitative structural analysis using remote sensing data: Kurdistan, northeast Iraq

Daniel Reif, Bernhard Grasemann, Robert H. Faber

AAPG Bulletin

..., dip angle and dip direction) of finite planar geologic structure from digital elevation models (DEMs). The orientations of planar data (e.g....

Illuminating Fine Scale Geology and Creating Robust Seismic Attributes Using High Trace Density Seismic Data in the Midland Basin

Andrew Lewis, Bruce Karr, Ron Bianco, Stonnie Pollock

Unconventional Resources Technology Conference (URTEC)

... and homoclinal in the up-dip position, and distally steepened to approximately three degrees in the down-dip direction (Lindsay, 2016). The carbonate...

Semi-inverse relationship between critical angle and reflectivity coefficient, and its implication in seismic survey design, processing, and interpretation

Chen Bao

International Meeting for Applied Geoscience and Energy (IMAGE)

... would also help to avoid a polarity flip either from structure up-dip to down-dip, or from mid to far angles. But again, are we capturing enough far...

Horizon Modeling using a Three-Dimensional Fault Restoration Technique

Karen S. Hoffman, John W. Neave

Indonesian Petroleum Association

... the intersection of the fault surfaces with the horizon being mapped, and the width of the polygon determines the dip of the fault surface...

Faulting in the Head of the Mississippi Embayment and Spreading Between the Embayment Sides

Richard G. Stearns

GCAGS Transactions

... of the trough has stretched the limbs, which are approximated as two sloping straight surfaces. This is a good approximation of the general structural shape...

Seismic diffractions separation and imaging based on convolutional neural network

Jiaxing Sun, Jidong Yang, Zhenchun Li, Jianping Huang, Jie Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

... characteristics in the dip-angle common-image gathers (DACIGs), which provides us an opportunity to extract diffractions. In this study, we present an efficient...

Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)

John C. Bancroft and Thais Guirigay

Search and Discovery.com

... Vc. A second velocity analysis, at a few locations, provides an accurate velocity field Vc-2 for all gathers. Moveout correction, amplitude scaling...

Statistical Curvature Analysis Techniques for Structural Interpretation of Dipmeter Data

C. A. Bengtson

AAPG Bulletin

... 7, but the dip versus azimuth plot shows a partial horseshoe pattern, indicative of north plunge, and a second partial horseshoe pattern, indicative...

Handling high-resolution borehole dips in a reservoir implicit structural modeling workflow

A. P. Ossere Ebindza, J. Renaudeau, S. Xue, L. H. Liew

International Meeting for Applied Geoscience and Energy (IMAGE)

... extension (kilometer scale). The second challenge concerns the density of borehole dips. Highly dense dip data lead to a larger number of equations...