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61st EAGE Conference and Exhibition
- Conference date: 07 Jun 1999 - 11 Jun 1999
- Location: Helsinki, Finland
- ISBN: 978-90-73781-10-8
- Published: 07 June 1999
41 - 60 of 502 results
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3D Modelling of Meander Loop Deposits
By G. MassonnatThis paper presents a method for modelling in 3D the structure and characteristics of meander-loop deposits, using a variety of techniques.
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3D Visualisation of Architectural Patterns in Salt-Rift Basins
More LessA three-dimensional computer visualisation method has been developed for analysing and modelling of evolution of salt features and their relationship with basin tectonics. The procedure includes interpretation and correlation of seismic horizons, construction of seismic mails, depth conversion, 3D visualisation of individual surfaces and sets of layers, animation of salt diapiric motion through basin evolution.
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Geodynamic, Geothermal and Hydrodynamic Evolution of the Broad Fourteens Basin, the Offshore Netherlands - a 2D Basin Modelling Study
Authors J. M. Verweij and H. J. SimmelinkThe study of the Broad Fourteens Basin is part of an ambitious project initiated in 1998 by the Netherlands Institute of Applied Geoscience TNO - National Geological Survey.
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South Atlantic Margins Basin Analysis (Samba) - Gravity Constraints on Plate Reconstruction
Authors J. D. Fairhead and W. G. DicksonIntegration of satellite, land and marine gravity data from the entire South Atlantic region and improved continental margin bathymetry have been used to study and compare tectonic features on both African and South American continental margins.
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Modelling of the Northern Caucasus Basin
Authors A. V. Ershov, M. -F. Brunet, A. M. Nikishin and S. N. BolotovThere is presented the burial history restoration of the Northem Caucasus basin. Three main stages is discriminated in the basin evolution: Middle Jurassic-Eocene stage, controlled by the rifting and postrift thermal relaxtion; Oligocene-Early Miocene stage of long wavelength pre-foreland subsidence, probably induced by the subduction-induced mantle flow; Middle Miocene-Quaternary foreland stage.
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Magnetotelluric Sounding at Sea Bottom - Methodology and Instrumentation
Authors V. Korepanov and F. DudkinMagnetotelluric (MT) sounding is one of the best developed methods of the Earth's trust deep sounding. It is used both for scientific and applied investigations. Especially it proved to be useful for polygons choice for oil prospecting. Because many of oil deposits are in the sea bottom, marine versions of MT sounding are also developed.
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Marine Magnetotellurics for Base Salt Mapping - a Gulf of Mexico Field Test
Authors G. M. Hoversten, S. Constable and H. F. MorrisonThe first successful marine Magnetotelluric survey in the Gulf of Mexico (GOM) has been conducted over the Gemini prospect.
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Magnetotelluric Techniques for Offshore Exploration
Authors S. Constable and A. OrangeThe magnetotelluric (MT) method is an established technique which uses measurements of naturally occurring electromagnetic fields to determine the electrical resistivity of subsurface rocks.
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Marine MT as a Sub-Salt Reconnaissance Tool in the Deep-Water Gulf of Mexico
More LessIn 3Q98 BP Exploration and AOA Geophysics carried out a marine MT survey in the deep-water GoM over sub-salt acreage where base salt was not imageable on seismic data.
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Marine Magnetotelluric Data Acquisition and Processing
Authors R. Reddig, A. Orange and G. CartabiaMarine MT is evolving from a research and development project into a tool for commercial petroleum exploration.
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Application of Marine Magnetotelluric to Commercial Exploration - Cases from the Mediterranean and the Gulf of Mexico
By A. ZerilliThe magnetotelluric (MT) method is a technique, which measures the naturally occurring electromagnetic fields to deterrnine the electrical resistivity of the subsurface.
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Electromagnetic Swap Effect for Sea Bottom MT Anomalies
Authors M. Zhdanov and N. GolubevIn this paper we study electric and magnetic fields "swap effect", originally described in (Berdichevsky et al.,1989).
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Use of Marine Controlled Source Electromagnetic Sounding for Sub-Basalt Exploration
Authors L. MacGregor, M. Sinha and S. ConstableThere are numerous regions in the world where the presence of shallow high velocity layers makes the imaging of deeper structure using conventional seismic reflection techniques a difficult task.
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Sub-Grid Finite-Difference Modelling in Cracked Media
Authors G. B. Van Baren, W. A. Mulder and G. C. HermanWe present a finite-difference modeling technique for scalar, two-dimensional wave propagation in a medium containing a large number of small-scale cracks.
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A Stable Optimal Absorbing Boundary Condition for Finite-Difference Modelling
By M. G. ImhofAbsorbing boundary conditions (ABCs) are widely used in numerical wave propagation by the finitedifference method.
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Fast Repeat-Modelling with Born Approximation
Authors A. Kirchner and S. A. ShapiroThe great progress of seismic technology of the recent years has brought a great improvement of the accuracy and repeatability of seismic records. Companies take advantage of these achievements in an increasing number of time-lapse studies to monitor production-induced changes within hydrocarbon reservoirs.
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A Fast Seismic Reflectivity Method for Finely Layered Target Zones
More LessWith the generation of large scale 3D reservoir models, there is a need for fast seismic AVO modeling of thin, multilayered targets.
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Approximate Reflection and Transmission Responses from a Layered Isotropic Elastic Medium
More LessTransmission effects in the overburden are important for amplitude-versus-offset (AVO) studies and for true-amplitude imaging of seismic data.
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Computing Wavefrond Characteristics Without Dynamic Ray Tracing
Authors D. Gajewski and C. VanelleIn recent years several techniques and tools to efficiently compute the traveltimes of seismic waves were developed.
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Computing Geometrical Spreading from Traveltimes in 3D
Authors U. Kästner and S. Buske3-D Kirchhoff prestack depth migration (PSDM) requires efficient methods to compute traveltimes and summation weights.
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