The Geophysicists' Bane: Multiple Suppression on the North West Shelf

C. R. T. Ramsden, M. R. Hobson, R. Cooper

Petroleum Exploration Society of Australia (PESA)

...) Peg-leg multiple reflections (Figure I b). Total raypath includes a primary reflection and one or more raypaths in the water layer. c) Intrabed...

Characterization of a Shallow Steamed Oil Reservoir Using Crosswell Seismology

Bjorn N. P. Paulsson, John W. Fairborn

Indonesian Petroleum Association

... front. We tried crosswell tomography here because it has the potential to determine the steam-liquid interface. The critical parameter, the velocity...

Model-Based, 2-D Seismic Definition of Subthrust Structure in the Uranium Peak Area, Northwest Colorado

George C. Robertson, Dirk W. McDermott, Rex L. Tang

Rocky Mountain Association of Geologists

... attempts to remove this remaining velocity effect proved unsuccessful and were abandoned. This discrepancy is attributed to raypath distortions...

The Use of Time-Lapse Seismic Attributes for Characterizing Hydraulic Fractures in a Tight Siltstone Reservoir

N. Riazi, C.R. Clarkson

Unconventional Resources Technology Conference (URTEC)

...) where is the acoustic impedance at the ith interface. In the above model, the assumptions include no multiples and a vertical raypath. The seismic...

Malossa Field: A Deep Discovery in the Po Valley, Italy

G. Errico, G. Groppi, S. Savelli, G. C. Vaghi

AAPG Special Volumes

...------------------------ The interpretation was made on the time record sections, including diffraction hyperbolas and other seismic raypath distortion, to allow...

Induced Seismicity Near Fox Creek, Alberta: Interpretation of Source Mechanisms

Hongliang Zhang, David W. Eaton

Unconventional Resources Technology Conference (URTEC)

..., for a 1-D layered velocity model,  represents the average density, while r and  denote the distance and average P-wave velocity along the raypath...

Seismic Interpretation of the Rocky Mountain Thrust Front Near the Crowsnest Deflection, Southern Alberta

N.J. Begin, D.C. Lawton, D.A. Spratt

CSPG Bulletin

... interpreted (CDP 450, 500 and 700), although those at CDP 450 and 500 may be seismic artifacts caused by a raypath distortion in the near surface. Line...

Fit For Purpose Integrated Structural Identification Using Azimuthal Monopole Sonic Waveforms and Vertical Seismic Profiling: The First Case Study From The Vertical Unconventional Well in North Sumatera Basin - Indonesia

Erfandi Adhiansyah, Annisa Nur Mahdiya, Murthala Hatta, Irma Eliza, Barry Albert Lumankun

Indonesian Petroleum Association

... that correspond to a combination between PP (compressional to compressional), PS (compressional to shear), and SP (shear to compressional) raypath types...

Appendix A: Considerations for Optimum 3-D Survey Design, Acquisition and Processing

R. Malcolm Lansley

AAPG Special Volumes

... in the strike direction (O’Connell et al., 1993, Manin and Hun, 1992, and Mougenot et al., 1992) in order to minimize the raypath complexity and thus...

Acoustic and Elastic Modeling of Seismic Time-Lapse Data from the Sleipner CO2 Storage Operation

R. J. Arts, M. Trani, R. A. Chadwick, O. Eiken, S. Dortland, L. G. H. van der Meer

AAPG Special Volumes

... and streamer displaced from the CO2 plume, so the plume lies mostly outside the subsurface raypath coverage. (b) Source and streamer above the CO2 plume, which...

Quantitative evaluation of the oil-leg potential in the Oliver gas field, Timor Sea, Australia

M. Lisk, G. W. O'Brien, P. J. Eadington

AAPG Bulletin

... that previously mapped high-angle faults are erroneous and reflect difficulties in seismic imaging caused by raypath distortion. Nonetheless...

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

... in Sedimentary Basins and Their Prediction Al-Chalabi, M., 1997, Parameter nonuniqueness in velocity versus depth functions: Geophysics, v. 62, p. 970–979...

Impact of Pre-Stack Depth Migration on the Anama Prospect, Papuan Foreland Basin

K. Bradey

Papua New Guinea (PNG) Petroleum Convention Proceedings

... in the Pliocene-Recent sediments create depth conversion problems. This p ap er d escrib es som e of the depth con versio n methods used to resolve...

Acquisition, Processing, and Analysis of Shallow, High-Resolution Seismic Data from the Outer Continental Shelf and Upper Slope, Offshore Louisiana

Susan E. Nissen , Janet M. Combes , Anthony G. Nekut

Journal of Sedimentary Research (SEPM)

... closely spaced temporal and spatial sampling; (2) FIG. 2. Left: Raypath diagram illustrating the concept of sea-surface ghosting. Raypaths are shown from...

Fault Seal Analysis in the North Sea

Steven D. Knott

AAPG Bulletin

... and core analyses. These data are proprietary and cannot be presented, but I present plots combining the data in a nonspecific way. Each parameter...

AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods

Alan R. Huffman

AAPG Special Volumes

... arrivals (primaries), and where anisotropy is present. Where large lateral and vertical velocity gradients and significant raypath distortion...

Structure of Upper Cenozoic Strata Beneath Kodiak Shelf, Alaska

Michael A. Fisher, Roland Von Huene

AAPG Bulletin

..., Seismic raypath migration with the pocket calculator: Geophysics, v. 42, p. 1056, 1063. Moore, G. F., and D. G. Karig, 1976, Development of sedimentary...

Seismic Expressions of Prograding Carbonate Bank Margins: Middle Miocene, Maldives, Indian Ocean

Andrei V. Belopolsky, Andr W. Droxler

AAPG Special Volumes

... s, whereas it varies at deeper levels because of the raypath problems under the carbonate bank margins. A few seismic sections were sampled for frequency...

Vertical Seismic Profiling--A Measurement that Transfers Geology to Geophysics: Chapter 2

B. A. Hardage

AAPG Special Volumes

... reflection method is emphasized by the simple raypath diagram in Figure 1. Modern seismic processing procedures do an admirable job of manipulating...

Geologic Framework of Lower Cook Inlet, Alaska

Michael A. Fisher, Leslie B. Magoon

AAPG Bulletin

... appears to have the following raypath: seismic source, A horizon, sea surface, A horizon, hydrophone. About 0.2 second later, the first water-layer...

Continental Margin Evolution of the Northern Arabian Platform in Syria

John A. Best , Muawia Barazangi , Damen Al-Saad , Tarif Sawaf , Ali Gebran

AAPG Bulletin

... are inadequate signal penetration, raypath distortion of the seismic energy associated with these complex structures, Fig. 5. Paleozoic areal...

CSPG/CSEG/CWLS GeoConvention 2012, May 14-18, 2012 Calgary TELUS Convention Centre & ERCB Core Research Centre, Calgary, Alberta, Canada; - Abstracts, #90174 (2014).

Search and Discovery.com

Geology of Norton Basin and Continental Shelf Beneath Northwestern Bering Sea, Alaska

Michael A. Fisher , William W. Patton, Jr. , Mark L. Holmes

AAPG Bulletin

.... Michaels, P., 1976, Seismic raypath migration with the pocket calculator: Geophysics, v. 42, p. 1056-1063. Miller, T. P., 1972, Potassium-rich...