Colombera, L, Mountney, NP, McCaffrey, WD et al. (1 more author) (2014) Models for guiding and ranking well-to-well correlations of channel bodies in fluvial reservoirs. American Association of Petroleum Geologists (AAPG) Bulletin, 98 (10). 1943 - 1965. ISSN 0149-1423
Abstract
A probabilistic method has been devised to assess the geologic realism of subsurface well-to-well correlations that entail the lateral tracing of geologic bodies across well arrays with constant spacing. Models of geo-body correlability (based on the ratio between correlatable and penetrated geo-bodies) are obtained from total probabilities of penetration and correlation, which are themselves dependent on the distribution of lateral extent of the geo-body type. Employing outcrop-analog data to constrain the width distribution of the geo-bodies, it is possible to generate a model that describes realistic well-to-well correlation patterns for given types of depositional systems. This type of correlability model can be applied for checking the quality of correlation-based subsurface interpretations by assessing their geologic realism as compared with one or more suitable outcrop analogs. The approach is illustrated by generating total-probability curves that refer to fluvial channel complexes and that are categorized on the basis of outcrop-analog classifications (e.g., braided system, system with 20% net-to-gross), employing information from a large fluvial geo-body database, Fluvial Architecture Knowledge Transfer System (FAKTS), which stores information relating to fluvial architecture. From these total-probability functions, values can be drawn to adapt the correlability models to any well-array spacing. The method has been specifically applied to rank three published alternative interpretations of a stratigraphic interval of the Travis Peak Formation (Texas), previously interpreted as a braided fluvial depositional system, in terms of realism of correlation patterns as compared to (1) all analogs recorded in FAKTS and considered suitable for large-scale architectural characterization, and (2) a subset of them including only systems interpreted as braided.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2014. The American Association of Petroleum Geologists. All rights reserved. This is an author produced version of a paper published in AAPG Bulletin. Uploaded in accordance with the publisher's self-archiving policy |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Feb 2015 10:50 |
Last Modified: | 21 Oct 2017 01:47 |
Published Version: | http://dx.doi.org/10.1306/05061413153 |
Status: | Published |
Publisher: | American Association of Petroleum Geologists |
Identification Number: | 10.1306/05061413153 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:82573 |