Retrieving geological signal from full tensor gravity gradiometry data using source body migration

Colm Murphy, Richard Farnell, Chris Bellamy, Alan Morgan

International Meeting for Applied Geoscience and Energy (IMAGE)

... sufficient high frequency signal. The improvement in signal coherency is noted with the SBM output (Figure 1b) showing greater clarity amongst the higher...

Subsurface seismic imaging using drill bit noise

Mehdi Asgharzadeh, Ashley Grant, Andrej Bona, Milovan Urosevic

Petroleum Exploration Society of Australia (PESA)

... (Figures 6 (c), (d) and (e)) obtained very low signal to noise ratio and event coherency. The drilling operation in the case of well BH001 took about...

A preliminary assessment of uncertainties attributed by analysts, array types and processing algorithms for microtremor observations, via the COSMOS Blind Trials

Michael W. Asten, Alan Yong, Sebastiano Foti, Koichi Hayashi, Antony Martin, William J. Stephenson, John F. Cassidy, Jacie Coleman

Petroleum Exploration Society of Australia (PESA)

... Spatial AutoCorrelation (ESAC) module and the Multi-Mode SPAC (MMSPAC) algorithm for direct fitting of coherency spectra (orange bands on Figure 3...

Understanding Basement Controls on Basin Development: Constraints from Gravity and Magnetic Data.

Duncan R. Cowan, Linda A. Tompkins, Terry Tyler

Indonesian Petroleum Association

... comparison of reduced-to-the-pole magnetic data and gravity gradient data, including global correlation, local window correlation and coherency analysis...

Beneficial impacts of receiver arrays on suppressing seismic speckle noise from near-surface heterogeneities: A reflection of 3D seismic acquisition practices in the Middle East

Andrey Bakulin, Ilya Silvestrov, Dmitry Neklyudov

International Meeting for Applied Geoscience and Energy (IMAGE)

... coherency. Array summation significantly lowers phase variations in proportion to 1/√N, where N denotes the array size, thereby enhancing data stability...

Integrated Geo-Computational Approach to Identify By-Passed Oil: A Case Study in Seruni Field, Sumatra

Muhammad Fauzi, Hazairin

Indonesian Petroleum Association

...) to deliver the time structure map (d). In order to facilitate fault interpretation, a seismic edge detection coherency volume has been processed...

Targeting Fracture Permeability for Geothermal Developments in the North Perth Basin

Mark Ballesteros, Gary Meyer, Jim McDairimid, Adrian Larking, Ralf Oppermann

Petroleum Exploration Society of Australia (PESA)

... to quickly visualise and separate larger (higher confidence) fractures from smaller - 8l '~4 ' _j __ -J · - - Fig. 5. Coherency extracted at top Permian...

A Comparison of Prestack Depth and Prestack Time Imaging of the Paktoa Complex, Canadian Beaufort MacKenzie Basin

G. R. Elsley, H. Tieman

AAPG Special Volumes

.... (A) Prestack time-migrated structural-dip-oriented seismic image across the Paktoa structure showing poor coherency in the core. The arrow indicates a growth...

III. Evidence of Faulting

Robert E. Sheriff

AAPG Special Volumes

... that they destroy the sense of coherency of reflections. (6) Displacement of correlations across the fault. Sometimes End_Page 50...

Paleozoic Hydrocarbon Habitat in the Arabian Plate, by Abdulkader M. Afifi, #10075 (2004).

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2-D Gravity and Magnetic Modeling of Subsurface Domical Structure 11/14

Claudia Alexander

Circum Pacific Council Publications

.... GEOMETRY OF BODY 11/14 The seismic lines were initially pro­ cessed by picking velocities from coherency plots that corrected the normal moveouts...

A seeded approach to deblending OBN data

Carsten Udengaard, Indranil Samanta, Richard Huang, Eric Camarda, Yi Xuan

International Meeting for Applied Geoscience and Energy (IMAGE)

... burst attenuation. After flattening the direct arrival the high confidence signal model is generated using a coherency tool that isolated the highest...

Q Marine

PESA Staff

Petroleum Exploration Society of Australia (PESA)

... to enable the application of fi ltering techniques that exploit spatio-temporal coherency. Random or incoherent noise suppression techniques...

87Sr/86Sr Variation in Tortonian Mediterranean Sediments: A Record of Milankovitch Cyclicity

Mario Sprovieri, Angelo Bonanno, Mario Barbieri, Adriana Bellanca, Rodolfo Neri, Bernardo Patti, Salvatore Mazzola

Special Publications of SEPM

... = 3.9 x 10- 7 0.25 0.20 0.15 C.I. = 95% 0.10 0.05 0.00 0.0E+00 2.0E-06 4.0E-06 6.0E-06 8.0E-06 1.0E-05 1.2E-05 C Coherency 1.0 0.8 Nonzero...

Extended Abstract: What is Wave Equation Pre-stack Depth Migration? An Overview

Andrew Long

Petroleum Exploration Society of Australia (PESA)

... here, it is demonstrated that wave equation PSDM can yie ld superior imagi ng of very steep dips, and superior amplitude coherency and reso lution be low...

Redevelopment of the Deep Tuscaloosa Gas Trend: A 3-D Seismic Case History of Judge Digby Field; Pointe Coupee Parish, Louisiana

Frank C. Sheppard, III, David N. Wright, Patrick L. McGrievy

GCAGS Transactions

...) velocity analysis, DMO stack, FX decon and coherency weighted stacking, and 3-D migration with proprietary Amoco algorithms. Processing began in March 1995...

Core-Log Transformations and Porosity-Permeability Relationships: Part 5. Laboratory Methods

Walter A. Nagel , Keith A. Byerley

AAPG Special Volumes

... to the bulk density curve. The ragged edge offers more coherency to the eye than discrete po nts. Figure 2 shows the same information after depth...

Fungus-bound Quasi-sandstone

R. V. Dietrich, J. R. Lampky

Journal of Sedimentary Research (SEPM)

... in relief and can be removed only with difficulty); the interiors of the masses have a coherency similar to that of friable sandstones. Except...

Limestone-Marl Couplets: Origin of the Early Pliocene Trubi Marls in Calabria, Southern Italy

R. Thunell , D. Rio , R. Sprovieri , I. Raffi

Journal of Sedimentary Research (SEPM)

... this aspect of insolation and the lithologic cyclicity. The significance of the relationship between two signals is expressed in terms of coherency, which...

GCAGS 51st Annual Convention, October 17–19, 2001, Shreveport, Louisiana, - Abstracts, #90901 (2001).

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High-Resolution Deconvolution with Sparsity and Lateral Continuity Constraints

Juefu Wang

Search and Discovery.com

... by trace-by-trace sparse deconvolution, preserves more signal but obviously still shows a degradation in lateral coherency. On the other hand...

ABSTRACT: FROM THE GEOLOGISTSEYES TO SYNTHETIC CORE DESCRIPTIONS: GEOLOGICAL LOG MODELLING USING WELL-LOG DATA; #90013 (2003)

BENOIT MATHIS, JEAN PIERRE LEDUC, THIBAULT VANDENABEELE

Search and Discovery.com

... coherency is evaluated using contingency tables. The resulting ‘‘synthetic core description’’ summarizes all the geological information contained in the full...

High-Resolution Deconvolution with Sparsity and Lateral Continuity Constraints

Juefu Wang

Search and Discovery.com

... by trace-by-trace sparse deconvolution, preserves more signal but obviously still shows a degradation in lateral coherency. On the other hand...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

... applied using the direct first-arrival traveltime inversion on the CMP data. Both Figure 4b and 4c show the improvement in the coherency and continuity...

Abstract: Multi-Vintage, Pre-Stack Calibration of 3-C 3-D Time-Lapse Seismic Data; #90171 (2013)

Igor B. Morozov and Le Gao

Search and Discovery.com

..., coherency-filtered, and migrated, after which time stretching and wavelet calibration is performed with the migrated datasets. As one can see, most...