Imperial College London
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Professor Adrian Muxworthy

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Earth and Planetary Magnetism
 
 
 
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Contact

 

+44 (0)20 7594 6442adrian.muxworthy

 
 
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Location

 

4.48Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Badejo:2021:10.1306/07062019207,
author = {Badejo, SA and Muxworthy, A and Fraser, A and Stevenson, G and Zhao, X and Jackson, M},
doi = {10.1306/07062019207},
journal = {American Association of Petroleum Geologists (AAPG) Bulletin},
pages = {1973--1991},
title = {Identification of magnetic enhancement at hydrocarbon/water contacts},
url = {http://dx.doi.org/10.1306/07062019207},
volume = {105},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Identifying the depths  of  the  hydrocarbon-fluid contacts  in  a  reservoir  is  important  for  determining hydrocarbon  reserves  and  production planning.  Using core  samples  from  the  Tay  sandstone reservoir  in  the  Central  North  Sea,  we  show  that  thereis  a  magnetic  enhancement at  the hydrocarbon-fluid  contacts,  that is  detectable both through  magnetic susceptibility measurements and magnetic hysteresis measurements. We observed this magnetic enhancement at both gas-oil and oil-water contacts, that have been independently identified using non-magnetic methods; we did not consider gas-water contacts in this study. We demonstrate that this magnetic enhancement is due to the precipitation of new nanometric iron oxide (magnetite) and iron sulphide (greigite)phases. The magnetic enhancement may be caused by diagenetic changes or preferential biodegradation at the top of the oil column during early filling and at the oil water contact. Our findings have the potential to be used to identify paleo-hydrocarbon-fluid contact in both structurally modified fields and failed wells.  The technique can also  be  used to  infer the fill history of  a  basin  and calibrate  petroleum systems models. Magnetic susceptibility measurements have the advantage that they can easily and quickly be measured in the field on whole core-material.
AU  - Badejo,SA
AU  - Muxworthy,A
AU  - Fraser,A
AU  - Stevenson,G
AU  - Zhao,X
AU  - Jackson,M
DO  - 10.1306/07062019207
EP  - 1991
PY  - 2021///
SN  - 0149-1423
SP  - 1973
TI  - Identification of magnetic enhancement at hydrocarbon/water contacts
T2  - American Association of Petroleum Geologists (AAPG) Bulletin
UR  - http://dx.doi.org/10.1306/07062019207
UR  - https://archives.datapages.com/data/bulletns/2021/10oct/BLTN19207/bltn19207.html?doi=10.1306%2F07062019207
UR  - http://hdl.handle.net/10044/1/83459
VL  - 105
ER  -
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