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79th EAGE Conference and Exhibition 2017 - Workshops
- Conference date: 12 Jun 2017 - 15 Jun 2017
- Location: Paris, France
- ISBN: 978-94-6282-219-1
- Published: 12 June 2017
141 - 144 of 144 results
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Velocities in imaging and stratigraphic inversion: new opportunities for integration
More LessAuthors G. Lambaré, R. Coleou, J. Messud, T. Allemand and P. GuillaumeFor long in seismic processing, velocity model building and depth migration/inversion have produced information on the subsurface velocity model with no overlap in terms of resolved vertical wavelengths. The uncovered wavelengths, among which the famous mid wavenumber gap, had then to be recovered in stratigraphic inversion with constraints from external information such as borehole data. The recent progresses in acquisitions (long offset and low frequency) and imaging tools had significantly closed this gap and started to make a wavenumber overlap possible between different processing/imaging/ inversion approaches. For example, high-resolution tomography has reported to reach an unprecedented vertical resolution up to 6 Hz, which is directly overlapping with the stratigraphic inversion of images from broadband data with low frequencies down to 2.5 Hz. Furthermore, in the area investigated by recorded diving waves, FWI potentially recovers the full range of vertical wavenumbers and thus overlaps with the resolution of both high-resolution tomography and stratigraphic inversion. This new status has motivated investigations about improved ways of integrating these sources of information. We review here several of these attempts that allow various approaches for the benefits of reliability and interpretability of the results.
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SISMAGE-CIG, TOTAL open Geoscience internal integrated FrameWork based on standards for interoperability.
More LessAuthors F. Morandini, B. Soleilhavoup and C. GautreauTOTAL has decided to develop a Geoscience internal integrated FrameWork (Sismage-CIG) to address the challenge of increasingly complex fields in Exploration and Production. It is based on an open and scalable architecture allowing both a better integration of in-house research, methodologies and workflows into fit to purpose solutions. Architecture implements a complete and extendible Shared Earth Model to support integrated operational studies, from Seismic Interpretation aspects to Reservoir Simulation and History Match including Geology interpretation and modelling. Based on Standards, mainly from Energistics (RESQML, but also WITSML and PRODML), it allows an efficient link to commercial integrated workflows and tools requested for a realistic use for operational 2G&R studies. RESQML v2.0.1 Data Model, design, capabilities and transfer format is a core component of our archictecture. It allowed us to improve/extend actual data model and to replace classical file data transfer by a more easy, secure and data management coherent solution using a more efficient way to exchange, share, update and manage project data with traceability and all item’s relations, if needed. Various aspects of the implementation of this Shared Earth Model will be presented, from Architecture, Data Modelling to Data Managing, with their links to the studies workflows.
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Characterisation of Gutter Casts and Thin-sandstone-bed Connectivity in Wave-dominated Deltaic Reservoirs
More LessAuthors G.J. Hampson, C. Jacquemyn, G.H. Graham, P.J.R. Fitch, M.D. Jackson and G.I. OnyenanuSandstone reservoirs deposited in wave-dominated shallow-marine environments contain significant intervals of thinly bedded facies characterised by the presence of interbedded sandstone and shales. The thinly bedded sandstone facies contain gutter casts, which are sand-filled erosional scours formed by storm and wave generated flows. These erosional scours (gutter casts) may increase connectivity between sandstone beds that are otherwise isolated by shales, thus creating effective vertical permeability. The 3D geometry, orientation and spatial distribution of gutter casts in relation to sandstone connectivity are uncertain. The study focuses on these aspects of gutter cast architecture and their impact on reservoir connectivity using a 3D high resolution digital outcrop model (DOM) constructed from an excellently exposed outcrop unit of the "G2" parasequence, Grassy Member, Blackhawk Formation, Book Cliffs, Utah USA.
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Contemporaneous Display Technology and Application of High-Precision River Sand
More LessThe contemporaneous presentation of river, sand and mud on the seismic slice is the research that seismogeology personnel desire to realize. Especially at the oil field development stage, the research is very important to deploy the location of injection and production well. This paper takes CFD11-1 oil field as the target region, selects out the property of river channel and sand body described precisely and realizes the river and sand attributes data fusion. Based on this, the paper displays the relationship between river, sand and mud contemporaneously. Through combined research on well data, the paper verifies that the profile and slice of seismic data is highly identical to well data. Based on this method, this paper studies the development and evolution of river channel and the internal structure of point bar so as to realize the recovery and rebuilding of the historical evolution process of meander river channel in the perspective of cause and process.
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