Unveiling and Imaging Karst Through Refined Wavefield Separation

Riaz Alai, M Afiq B Mokhtar, Yonghe Guo, Pongga Wardaya, Jun Wang , Rizki Krishna Pratama, Haryono Haryanto

Indonesian Petroleum Association

... wave field has been separated into specular reflections and diffractions. Diffraction energy, in general is much lower in amplitude and separate...

Diffraction amplitudes as a quantitative fracture property interpretation tool

Donald C. Adams, César Barajas-Olalde, Nourelhouda Benouadah, Trevor L. Richards, Bethany A. Kurz

International Meeting for Applied Geoscience and Energy (IMAGE)

... geophysical method to provide subsurface structure images. When receivers at different offsets record amplitude changes of the seismic reflections from...

Seismic diffraction imaging on pre-existing seismic data to predict fracturing in unconventional reservoirs

Search and Discovery.com

Abstract: Ground penetrating radar transect of the Gilbert-type, glaciomarine Pocologan delta, southwestern New Brunswick

M. T. West, K. E. Butler, S. Allard, T. Webb

Atlantic Geology

... and channel-fill deposition, as well as enigmatic zones of chaotic, discontinuous reflections and diffractions are also observed. The water table was evident...

Abstract: Migration of Velocity Spectra: An Example from the Timor Sea, by J. C. Beasley and R. Klotz; #91015 (1992).

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Enhancing Fault Interpretation Through Broadband Processing and Diffraction Imaging: The First and Successful Experience from Madura Offshore Area

Pongga Wardaya, Rino Saputra, Syaeful Amin

Indonesian Petroleum Association

... diffractions independently from the reflections, or with imaging algorithms that separate reflections and diffractions internally. A diffraction image can...

III. Evidence of Faulting

Robert E. Sheriff

AAPG Special Volumes

... blocks and diffractions from the upper and lower termination points. Note the continuity of amplitude between reflections and diffractions. End_Page 51...

Spectral Decompostion for a More Accurate Image; #41807 (2016)

Rongfeng Zhang

Search and Discovery.com

... of subsurface events, which include reflections, diffractions and refractions, as well as noise and other factors unrelated to subsurface geology...

Abstract: Diffraction Imaging Applied to Pre-existing 3D Seismic Data to Map Fracture Corridors in an Unconventional Play, by Marianne Rauch-Davies and Alex Berkovitch; #90190 (2014)

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Refined Karst Feature and Fault Identification Through Integrated Wave Field Separation and Imaging of Diffraction Energy

Riaz Alai, Afiq Mokhtar, Christopher Lee Slind, Yonghe Guo, Rizki Krishna Pratama

Indonesian Petroleum Association

... extended reprocessing of the data, the total wave field has been separated into specular reflections and diffractions prior to migration of the data...

Abstract: A Case Study of the Seismic Reflection Method Applied to Subsurface Geological Mapping in the Kuala Lumpur Area

J. K. Raj, Preamakanthan

Geological Society of Malaysia (GSM)

... bedrock. It should'be noted however, that sev~ral factors including signal source, background noise, side reflections, diffractions and multiples...

Field Development with Three-Dimensional Seismic Methods in the Gulf of Thailand — A Case History

C. G. Dahm, R. J. Graebner

Southeast Asia Petroleum Exploration Society (SEAPEX)

... from the interference of both reflections and diffractions coming in from out of the plane of the section. These “ signals” appear as noise...

Synthetic Seismic-Reflection Profiles of Rift-Related Structures

Martha O. Withjack , D. J. Drickman Pollock

AAPG Bulletin

... program. It creates a synthetic seismic section composed of normal-incident primary reflections and diffractions. The amplitudes of the reflections...

What are Interpreters for? The Impact of Faster and More Objective Interpretation Systems

Martyn Millwood Hargrave, Andrew Deighan, Jamie Haynes

Indonesian Petroleum Association

..., these include: direct fault plane reflections and diffractions, changes in reflector continuity, offsetting patterns in reflector shape either side of a fault...

Towards Improved Quality and Accuracy of Deeper Target Images on Land Data

Afiq Mokhtar, Riaz Alai, Christopher Lee Slind, Poetri Monalia, Rizki Krishna Pratama

Indonesian Petroleum Association

... the data was optimally preconditioned to reveal the true reflections and diffractions traditionally masked by noise, multiples, and artefacts...

1.2 Seismic Stratigraphy: 1.2.5 Clastics: Regional Seismic Lines in the National Petroleum Reserve in Alaska

C. E. Kirschner, G. Gryc, and C. Molenaar

AAPG Special Volumes

...). It is also delineated from the Brooks Range province by the virtual absence of high velocity reflections and diffractions common in the Ellesmerian rocks...

Seismic Modelling in 3D for Migration Testing

Search and Discovery.com

... ) medium. Consisting of 1681 source gathers, each having 1681 receivers, it is shown to be very high frequency and to contain both specular reflections...

Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well

Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist

International Meeting for Applied Geoscience and Energy (IMAGE)

... within the lower part of the bandwidth exhibiting broadside reflections and diffractions (Figure 2). Reverberatory energy from preceding shots is observed...

Using Multi-Focusing 3-D Diffraction Imaging to Predict Fracture Swarms in Unconventional Reservoirs

Marianne Rauch-Davies, Alex Berkovitch, Kostya Deev

Unconventional Resources Technology Conference (URTEC)

... are usually much weaker than those of specular reflections. Diffractions are essentially lost during the conventional processing/migration sequence...

Cocorp Deep Seismic Reflection Traverse Across the Southern Oklahoma Aulacogen

J. A. Brewer, R. Good, J. E. Oliver, L. D. Brown, S. Kaufman

Oklahoma City Geological Society

... reflections and diffractions from this area, together with the moderate dip of the Mountain View and Meers Faults, strongly suggest...

3.2 Basement Involved: 3.2.2 Basement Thrust and Reverse Faults: COCORP Deep Seismic Reflection Traverse Across the Southern Oklahoma Aulacogen

R. Good, L. Brown, J. Oliver, and S. Kaufman

AAPG Special Volumes

... of the Anadarko basin lie within the Frontal Fault System (Harlton 1963, 1972; Takken, 1967). Discontinuous reflections and diffractions from...

High Resolution Diffraction Imaging of Small Scale Fractures in Shale and Carbonate Reservoirs

Alexander M. Popovici, Ioan Sturzu, Tijmen J. Moser

Unconventional Resources Technology Conference (URTEC)

... the wave energy from reflections and the other that contains the wave energy from diffractions. Each component is used to provide an image through...

Unconventional Reservoir Characterization Using Azimuthal Seismic Diffraction Imaging

Dmitrii Merzlikin, Sergey Fomel, Xinming Wu, Mason Phillips

Unconventional Resources Technology Conference (URTEC)

... their orientation. Method A crucial step in diffraction imaging workflows is the separation of reflections and diffractions. Different separation methods can...

An Integrated Approach to 3D Seismic Acquisition Feasibility Studies: Review of Present Techniques and Future Trends

Claude Bordenave, Frederic Merlet, Lotfi Ben Brahim, Nyoman Swatika

Indonesian Petroleum Association

..., an alternative to this method consists in using 3D ray-tracing. With such a tool, 3D dipping plane layers and diffractions can be generated from a 3D acquisition...

Abstract: Using-MultiFocusing 3D Diffraction Imaging to Predict Fracture Corridors/swarms in the Bazhenov Formation; #90187 (2014)

Marianne Rauch-Davies, Alex Berkovitch, Danil Pelman, and Kostya Deev

Search and Discovery.com

... reflections. Diffractions are essentially lost during the conventional processing/migration sequence, or they are masked in conventional seismic stacked...