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Workflows for incorporating stratigraphic and diagenetic relationships into a reservoir-analogue model from outcrops of Miocene carbonates in SE Spain

Gregory S. Benson, Evan K. Franseen, Robert H. Goldstein and Zhaoqi Li
Workflows for incorporating stratigraphic and diagenetic relationships into a reservoir-analogue model from outcrops of Miocene carbonates in SE Spain (in Fundamental controls on flow in carbonates, Susan M. Agar (editor) and Gary J. Hampson (editor))
Petroleum Geoscience (January 2014) 20 (1): 55-78

Abstract

A workflow is presented for constructing an outcrop-based static geological model for Miocene heterozoan, photozoan, oolitic and microbial carbonates in SE Spain. Fieldwork and LiDAR (Light Detection And Ranging) data were integrated to create a photorealistic virtual outcrop. Field-based data are depicted on the virtual outcrop, and used to identify and correlate horizons. Multivariate regression is used to extend stratigraphic horizons away from the outcrop and to create realistic time-equivalent model layers. Mapping and measured stratigraphic sections are used to assign depofacies within model layers. Pinning points are used to reconstruct sea-level history, and palaeotopography is used to define palaeobathymetry. Geospatial analysis of depofacies occurrence is used to extrapolate facies while also enforcing palaeobathymetric controls on depofacies distribution. Dolomitization and meteoric calcite cementation are dominant diagenetic products affecting porosity and permeability. Their distribution was mapped in the field and amounts were quantified in the laboratory, and these were used to populate diagenetic products into geomodel cells. Six scenario models were built to represent different stages and combinations of diagenetic effects on porosity and permeability. Construction of the static geological models required the development of new methods. These include: (1) a new workflow to extend clinoform surfaces across the model area by fitting equations to horizon picks made on the outcrop; (2) a new workflow relating relative sea level to model layers to allow calculation of palaeo-water depth and relate that to facies probability; and; (3) an experimental application to predict porosity and permeability from objective visual descriptions of carbonate samples.


ISSN: 1354-0793
EISSN: 2041-496X
Serial Title: Petroleum Geoscience
Serial Volume: 20
Serial Issue: 1
Title: Workflows for incorporating stratigraphic and diagenetic relationships into a reservoir-analogue model from outcrops of Miocene carbonates in SE Spain
Title: Fundamental controls on flow in carbonates
Author(s): Benson, Gregory S.Franseen, Evan K.Goldstein, Robert H.Li, Zhaoqi
Author(s): Agar, Susan M.editor
Author(s): Hampson, Gary J.editor
Affiliation: ExxonMobil Upstream Research Company, Houston, TX, United States
Affiliation: ExxonMobil Upstream Research Company, Houston, TX, United States
Pages: 55-78
Published: 20140127
Text Language: English
Publisher: Geological Society Publishing House for EAGE (European Association of Geoscientists & Engineers), London, United Kingdom
References: 49
Accession Number: 2014-011419
Categories: Economic geology, geology of energy sourcesSedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendices
Illustration Description: illus. incl. sects., strat. col., 2 tables, geol. sketch map
N36°46'60" - N36°46'60", W02°06'00" - W02°06'00"
Secondary Affiliation: Imperial College London, GBR, United KingdomUniversity of Kansas, USA, United States
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201408
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