Overlapping faults and their effect on fluid flow in different reservoir types

a LIDAR-based outcrop modeling and flow simulation study

A. Rotevatn, S. J. Buckley, J. A. Howell, H. Fossen

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

In this article we focus on the potential of fault-overlap zones as conduits for fluid flow in a variety of reservoir types. Light detection and ranging (LIDAR) technology were applied to collect a three-dimensional, spatially constrained data set from a well-exposed fault-overlap zone that crops out in the Devil's Lane area of the Canyonlands National Park in Utah. A virtual outcrop was generated and used to extract structural and stratigraphic data that were taken into a reservoir modeling software and reconstructed. The outcrop-based model was flow simulated and used to test fluid flow through a real-world faultoverlap zone. A structural framework was built based on collected outcrop data and combined with a series of nine different fades models. The different fades models included an eolian model based on the outcrop and a range of synthetic fluvial and shallow marine systems. Results show that, for certain depositional models, cross-fault reservoir communication may be poor despite the geometric connectivity of the relay beds. This was the case for low net/gross fluvial models and shoreface models. Conversely, high net/gross fluvial systems and eolian systems show good communication through the same relay zone. Overall, the results show that, in the presence of a fault-overlap zone, pressure communication across a relay ramp may still be poor depending on the scale of the faults and relay ramp as well as the geometry and volume of the sands.
Original languageEnglish
Pages (from-to)407-427
Number of pages21
JournalAAPG Bulletin
Volume93
Issue number3
DOIs
Publication statusPublished - Mar 2009

Fingerprint

Flow simulation
fluid flow
Flow of fluids
outcrop
modeling
simulation
communication
Communication
effect
detection
Crops
connectivity
national park
Sand
software
geometry
crop
sand
Geometry

Cite this

Overlapping faults and their effect on fluid flow in different reservoir types : a LIDAR-based outcrop modeling and flow simulation study. / Rotevatn, A.; Buckley, S. J.; Howell, J. A.; Fossen, H.

In: AAPG Bulletin, Vol. 93, No. 3, 03.2009, p. 407-427.

Research output: Contribution to journalArticle

@article{e0cbeb4f5d5b4762a07cfece39256f1c,
title = "Overlapping faults and their effect on fluid flow in different reservoir types: a LIDAR-based outcrop modeling and flow simulation study",
abstract = "In this article we focus on the potential of fault-overlap zones as conduits for fluid flow in a variety of reservoir types. Light detection and ranging (LIDAR) technology were applied to collect a three-dimensional, spatially constrained data set from a well-exposed fault-overlap zone that crops out in the Devil's Lane area of the Canyonlands National Park in Utah. A virtual outcrop was generated and used to extract structural and stratigraphic data that were taken into a reservoir modeling software and reconstructed. The outcrop-based model was flow simulated and used to test fluid flow through a real-world faultoverlap zone. A structural framework was built based on collected outcrop data and combined with a series of nine different fades models. The different fades models included an eolian model based on the outcrop and a range of synthetic fluvial and shallow marine systems. Results show that, for certain depositional models, cross-fault reservoir communication may be poor despite the geometric connectivity of the relay beds. This was the case for low net/gross fluvial models and shoreface models. Conversely, high net/gross fluvial systems and eolian systems show good communication through the same relay zone. Overall, the results show that, in the presence of a fault-overlap zone, pressure communication across a relay ramp may still be poor depending on the scale of the faults and relay ramp as well as the geometry and volume of the sands.",
author = "A. Rotevatn and Buckley, {S. J.} and Howell, {J. A.} and H. Fossen",
year = "2009",
month = "3",
doi = "10.1306/09300807092",
language = "English",
volume = "93",
pages = "407--427",
journal = "AAPG Bulletin",
issn = "0149-1423",
publisher = "AMER ASSOC PETROLEUM GEOLOGIST",
number = "3",

}

TY - JOUR

T1 - Overlapping faults and their effect on fluid flow in different reservoir types

T2 - a LIDAR-based outcrop modeling and flow simulation study

AU - Rotevatn, A.

AU - Buckley, S. J.

AU - Howell, J. A.

AU - Fossen, H.

PY - 2009/3

Y1 - 2009/3

N2 - In this article we focus on the potential of fault-overlap zones as conduits for fluid flow in a variety of reservoir types. Light detection and ranging (LIDAR) technology were applied to collect a three-dimensional, spatially constrained data set from a well-exposed fault-overlap zone that crops out in the Devil's Lane area of the Canyonlands National Park in Utah. A virtual outcrop was generated and used to extract structural and stratigraphic data that were taken into a reservoir modeling software and reconstructed. The outcrop-based model was flow simulated and used to test fluid flow through a real-world faultoverlap zone. A structural framework was built based on collected outcrop data and combined with a series of nine different fades models. The different fades models included an eolian model based on the outcrop and a range of synthetic fluvial and shallow marine systems. Results show that, for certain depositional models, cross-fault reservoir communication may be poor despite the geometric connectivity of the relay beds. This was the case for low net/gross fluvial models and shoreface models. Conversely, high net/gross fluvial systems and eolian systems show good communication through the same relay zone. Overall, the results show that, in the presence of a fault-overlap zone, pressure communication across a relay ramp may still be poor depending on the scale of the faults and relay ramp as well as the geometry and volume of the sands.

AB - In this article we focus on the potential of fault-overlap zones as conduits for fluid flow in a variety of reservoir types. Light detection and ranging (LIDAR) technology were applied to collect a three-dimensional, spatially constrained data set from a well-exposed fault-overlap zone that crops out in the Devil's Lane area of the Canyonlands National Park in Utah. A virtual outcrop was generated and used to extract structural and stratigraphic data that were taken into a reservoir modeling software and reconstructed. The outcrop-based model was flow simulated and used to test fluid flow through a real-world faultoverlap zone. A structural framework was built based on collected outcrop data and combined with a series of nine different fades models. The different fades models included an eolian model based on the outcrop and a range of synthetic fluvial and shallow marine systems. Results show that, for certain depositional models, cross-fault reservoir communication may be poor despite the geometric connectivity of the relay beds. This was the case for low net/gross fluvial models and shoreface models. Conversely, high net/gross fluvial systems and eolian systems show good communication through the same relay zone. Overall, the results show that, in the presence of a fault-overlap zone, pressure communication across a relay ramp may still be poor depending on the scale of the faults and relay ramp as well as the geometry and volume of the sands.

UR - http://www.scopus.com/inward/record.url?scp=62749201457&partnerID=8YFLogxK

U2 - 10.1306/09300807092

DO - 10.1306/09300807092

M3 - Article

VL - 93

SP - 407

EP - 427

JO - AAPG Bulletin

JF - AAPG Bulletin

SN - 0149-1423

IS - 3

ER -