Method and apparatus for subterranean formation flow imaging
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United States of America Patent
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Feb 15, 2005
Grant Date -
May 13, 2004
app pub date -
Nov 8, 2002
filing date -
Nov 8, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method and apparatus for measuring a property relating to fluid flow in an earth formation, more specifically to directly measuring formation permeability and other fluid characteristics. The present invention provides a method for determining the permeability of a hydrocarbon bearing earth formation, which method comprises the steps of: locating a tool at a selected position in a borehole penetrating the earth formation; inducing a flow of fluid within the earth formation to said tool; creating at least two MRI images of said fluid while flowing within the earth formation to said tool, said at least two images being created at different times; determining displacement of said fluid within the earth formation between said different times, using the at least two MRI images.
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