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Constraining the physical properties of Chimney/pipe structures within sedimentary basins

Constraining the physical properties of Chimney/pipe structures within sedimentary basins
Constraining the physical properties of Chimney/pipe structures within sedimentary basins
Evaluation of seismic reflection data has revealed structures cross-cutting the overburden within many sedimentary basins worldwide, including those in the North Sea and Norwegian Sea. These seismically-imaged pipes and chimneys are considered to be possible pathways for fluid flow. Natural fluids from deeper strata have migrated through these structures at some point in geological time. We test the hypothesis that many chimney and pipe structures imaged on seismic reflection profiles worldwide are the consequence of (1) a fracture network that has been reactivated by pore fluid pressure which facilitates the migration of fluids upwards; and (2) shallow sub-seafloor lateral migration of fluids along stratigraphic interfaces and near-surface fractures. An experimental approach to determine the physical properties of these structures beneath the sub-seafloor is described, with particular reference to an investigation of the Scanner Pockmark complex in the North Sea. The study is relevant to storage operators, policy-makers and those keen to demonstrate that it is possible to constrain and fully understand the physical properties and possible fluid flow pathways in the sedimentary overburden above sub-seafloor CO2 storage reservoirs
Keywords: seismic chimney; pipe; fluid flow; fracture network
seismic chimney, pipe, fluid flow, fracture network
Bull, Jonathan
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Berndt, Christian
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Minshull, Timothy
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Henstock, Timothy
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Bayrakci, Gaye
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Gehrmann, Romina
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Provenzano, Giuseppe
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Böttner, Christoph
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Schramm, Bettina
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Callow, Ben, James
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chapman, mark
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Bull, Jonathan
974037fd-544b-458f-98cc-ce8eca89e3c8
Berndt, Christian
29364362-5d52-4b1b-82b9-e799fcc4d7ed
Minshull, Timothy
bf413fb5-849e-4389-acd7-0cb0d644e6b8
Henstock, Timothy
27c450a4-3e6b-41f8-97f9-4e0e181400bb
Bayrakci, Gaye
e0b89aa5-d514-4ecb-91b1-8ed8bd472eda
Gehrmann, Romina
1ee547b2-aa53-4d38-9d36-a2ccc3aa52e2
Provenzano, Giuseppe
0da03494-44a8-4536-8833-6cd4feb75882
Böttner, Christoph
e35e2e9c-3e87-48b2-a5bb-a68cd68266be
Schramm, Bettina
1c3bc4c4-4939-4982-89f5-14c6d06a2ffc
Callow, Ben, James
19f1a5fe-cabd-4c49-a84f-dc7de0e3c462
chapman, mark
3bc9d605-ef80-4f2e-8c8f-862e6ed2eba9

Bull, Jonathan, Berndt, Christian, Minshull, Timothy, Henstock, Timothy, Bayrakci, Gaye, Gehrmann, Romina, Provenzano, Giuseppe, Böttner, Christoph, Schramm, Bettina, Callow, Ben, James and chapman, mark (2018) Constraining the physical properties of Chimney/pipe structures within sedimentary basins. 14th International Conference on Greenhouse Gas Control Technologies, Melbourne, Australia. 21 - 25 Oct 2018. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Evaluation of seismic reflection data has revealed structures cross-cutting the overburden within many sedimentary basins worldwide, including those in the North Sea and Norwegian Sea. These seismically-imaged pipes and chimneys are considered to be possible pathways for fluid flow. Natural fluids from deeper strata have migrated through these structures at some point in geological time. We test the hypothesis that many chimney and pipe structures imaged on seismic reflection profiles worldwide are the consequence of (1) a fracture network that has been reactivated by pore fluid pressure which facilitates the migration of fluids upwards; and (2) shallow sub-seafloor lateral migration of fluids along stratigraphic interfaces and near-surface fractures. An experimental approach to determine the physical properties of these structures beneath the sub-seafloor is described, with particular reference to an investigation of the Scanner Pockmark complex in the North Sea. The study is relevant to storage operators, policy-makers and those keen to demonstrate that it is possible to constrain and fully understand the physical properties and possible fluid flow pathways in the sedimentary overburden above sub-seafloor CO2 storage reservoirs
Keywords: seismic chimney; pipe; fluid flow; fracture network

Text
GHGT-14 Bull_et_al_2018 - Accepted Manuscript
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More information

Published date: 21 October 2018
Additional Information: This paper was presented at the 14th International Conference on Greenhouse Control Technologies - GHGT-14. 21-25 October 2018, Melbourne, Australia
Venue - Dates: 14th International Conference on Greenhouse Gas Control Technologies, Melbourne, Australia, 2018-10-21 - 2018-10-25
Keywords: seismic chimney, pipe, fluid flow, fracture network

Identifiers

Local EPrints ID: 428330
URI: https://eprints.soton.ac.uk/id/eprint/428330
PURE UUID: 7b36110f-9874-451f-ba0a-26e3c7a46323
ORCID for Timothy Minshull: ORCID iD orcid.org/0000-0002-8202-1379
ORCID for Timothy Henstock: ORCID iD orcid.org/0000-0002-2132-2514
ORCID for Romina Gehrmann: ORCID iD orcid.org/0000-0002-3099-2771
ORCID for Ben, James Callow: ORCID iD orcid.org/0000-0003-2296-1702

Catalogue record

Date deposited: 21 Feb 2019 17:30
Last modified: 14 Mar 2019 01:48

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