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Study of Subsurface Flow Direction in North Perth Basin - By Investigation of Existing Contemporary Stress Measurements and Electromagnetic Datasets

CHEN, Junming - 2013

Australian School of Petroleum(ASP)

University of Adelaide

Abstract

Firstly, both Magnetotelluric (MT) phase data and stress regime data are sensitive to subsurface
current flow, to more specifically, MT phase data is sensitive to resistivity which is mainly affected
by underground flow while the stress regime is the main reason of subsurface structures including
faults and fractures that serves as a pathway for fluid to flow. Hence, it is possible to qualitatively
find the correlation between MT data and stress data. Secondly, the MT phase data (impedance
tensor) is considered to be a second rank tensor while the stress regime data is also a second rank
tensor, which may be a potential clue that the relationship between MT data and stress data can be
determined quantitatively by using mathematic method. In general, it is highly feasible to find the
correlation between MT data and stress data both qualitatively and quantitatively.

Australian School of Petroleum
THE UNIVERSITY OF ADELAIDE

SA 5005 AUSTRALIA

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