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Title: Seismic modeling and geostatistical lithofacies simulation of an outcrop case study: A step towards the integration of seismic data in reservoir simulations

Abstract

A synthetic section interpreted in lithofacies has been constructed from the study of a large outcrop in order to test on a {open_quotes}true{close_quotes} geological model different methods and tools in the field of the seismic processing and geostatistical reservoir modeling. The large outcrops of the Campanian deltaic series of Colorado were studied to build a 6 km long and 350 m thick 2D section. The section was interpreted in sedimentary facies then digitized in order to compile a high-resolution grid for both geophysical and geostatistical simulations. Eleven facies where then determined in offshore, shoreface, foreshore and coastal plain environments. Rock properties such as P - wave, S - wave velocity and density were assigned to each cells of the model, and the target was buried. A fully elastic seismic modeling was then computed, and data post- processing included wavelet extraction, stratigraphic modeling and stratigraphic inversion. Pre - stack and post - stack inversions have also been performed. In the pre - stack inversion, the variation of the reflection coefficient amplitudes versus offset is taken into account, and, as consequence, resolution is very much improved. A geostatistical analysis as also performed on the same data - set, proportion curves of lithofaciesmore » and variograms were computed, and different stochastic approaches ere tested. The next step will be the computation of geostatistical parameters on seismic data in order to better constrain stochastic reservoir simulations with seismic data.« less

Authors:
; ;  [1]
  1. Institut Francais du Petrole, Malmaison (France); and others
Publication Date:
OSTI Identifier:
127400
Report Number(s):
CONF-950995-
Journal ID: AABUD2; ISSN 0149-1423; TRN: 95:005942-0094
Resource Type:
Journal Article
Journal Name:
AAPG Bulletin
Additional Journal Information:
Journal Volume: 79; Journal Issue: 8; Conference: International conference and exhibition of the American Association of Petroleum Geologists, Inc.: managing change at the turn of the century, Nice (France), 10-13 Sep 1995; Other Information: PBD: Aug 1995
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 58 GEOSCIENCES; COLORADO; STRATIGRAPHY; ALLUVIAL DEPOSITS; RESERVOIR ROCK; SEISMIC SURVEYS; SIMULATION; CRETACEOUS PERIOD; KRIGING

Citation Formats

Eschard, R, Bourgeois, A, and Dequirez, P Y. Seismic modeling and geostatistical lithofacies simulation of an outcrop case study: A step towards the integration of seismic data in reservoir simulations. United States: N. p., 1995. Web.
Eschard, R, Bourgeois, A, & Dequirez, P Y. Seismic modeling and geostatistical lithofacies simulation of an outcrop case study: A step towards the integration of seismic data in reservoir simulations. United States.
Eschard, R, Bourgeois, A, and Dequirez, P Y. 1995. "Seismic modeling and geostatistical lithofacies simulation of an outcrop case study: A step towards the integration of seismic data in reservoir simulations". United States.
@article{osti_127400,
title = {Seismic modeling and geostatistical lithofacies simulation of an outcrop case study: A step towards the integration of seismic data in reservoir simulations},
author = {Eschard, R and Bourgeois, A and Dequirez, P Y},
abstractNote = {A synthetic section interpreted in lithofacies has been constructed from the study of a large outcrop in order to test on a {open_quotes}true{close_quotes} geological model different methods and tools in the field of the seismic processing and geostatistical reservoir modeling. The large outcrops of the Campanian deltaic series of Colorado were studied to build a 6 km long and 350 m thick 2D section. The section was interpreted in sedimentary facies then digitized in order to compile a high-resolution grid for both geophysical and geostatistical simulations. Eleven facies where then determined in offshore, shoreface, foreshore and coastal plain environments. Rock properties such as P - wave, S - wave velocity and density were assigned to each cells of the model, and the target was buried. A fully elastic seismic modeling was then computed, and data post- processing included wavelet extraction, stratigraphic modeling and stratigraphic inversion. Pre - stack and post - stack inversions have also been performed. In the pre - stack inversion, the variation of the reflection coefficient amplitudes versus offset is taken into account, and, as consequence, resolution is very much improved. A geostatistical analysis as also performed on the same data - set, proportion curves of lithofacies and variograms were computed, and different stochastic approaches ere tested. The next step will be the computation of geostatistical parameters on seismic data in order to better constrain stochastic reservoir simulations with seismic data.},
doi = {},
url = {https://www.osti.gov/biblio/127400}, journal = {AAPG Bulletin},
number = 8,
volume = 79,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1995},
month = {Tue Aug 01 00:00:00 EDT 1995}
}