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Geological process simulation in 3-D lithofacies modeling; application in a basin floor fan setting

Daniel Otoo and David Hodgetts
Geological process simulation in 3-D lithofacies modeling; application in a basin floor fan setting (in Closing the gap; III, Advances in applied geomodeling for hydrocarbon reservoirs, David Garner (prefacer))
Bulletin of Canadian Petroleum Geology (December 2019) 67 (4): 255-272

Abstract

This work examines the impact of forward stratigraphic modeling on lithofacies representation in a 3-D volume by integrating data from geological process simulations and actual well logs. The complex depositional architecture and property variation in basin floor fan systems highlights the need for modeling techniques that capture heterogeneity to improve subsurface property prediction away from known data. Geological process simulation enhances our understanding of sediment distribution in a defined 3-D geological system. The workflow involves: 1) replication of depositional patterns in a basinal fan setting using the Geological Process Modeling (GPM) software; 2) lithofacies classification from sediment grain distribution, and turbid water velocity in the geological process model; and 3) generation of lithofacies proportion maps and vertical trends from simulated geobodies, to serve as an additional conditioning parameter in facies modeling. The simulation produced sediment distribution patterns, lobe switching and stacking features that are characteristic in turbidite settings. The impact on lithofacies representation was assessed using a Net-to-Gross analysis of actual and process-based sedimentological logs, with a good match found between process-based and actual-data facies models in several well locations. These results lead us to suggest that the geological process simulation approach can improve inter-well facies property prediction in a basin floor fan setting.


ISSN: 0007-4802
Coden: BCPGAI
Serial Title: Bulletin of Canadian Petroleum Geology
Serial Volume: 67
Serial Issue: 4
Title: Geological process simulation in 3-D lithofacies modeling; application in a basin floor fan setting
Title: Closing the gap; III, Advances in applied geomodeling for hydrocarbon reservoirs
Author(s): Otoo, DanielHodgetts, David
Author(s): Garner, Davidprefacer
Affiliation: University of Manchester, Department of Earth and Environmental Sciences, Manchester, United Kingdom
Affiliation: TerraMod Consulting, Calgary, AB, Canada
Pages: 255-272
Published: 201912
Text Language: English
Publisher: Canadian Society of Petroleum Geologists, Calgary, AB, Canada
References: 33
Accession Number: 2021-008365
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., 3 tables, block diag.
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Abstract, Copyright, Canadian Society of Petroleum Geologists. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2021
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