Unknown
AAPG
In:
In: Hydrocarbon migration and its near-surface expression. , ed. by Schumacher, D. and Abrams, M. A. AAPG Memoir, 66 . AAPG, Tulsa, Okla., pp. 169-171.
Publication Date:
2018-03-29
Description:
Rates of petroleum seepage must ultimately be related to the rate of supply from below. This could be either
from a leaking accumulation or directly from the source rock itself. However, many things can happen during
migration to the surface, such that the relationship between trap leakage rates and surface seep rates remains
obscure. We calculate the potential flux rates of gas leakage across seals and compare these with measurements
of fluxes for three seepage sites on the European continental shelf. We conclude that seepage flow rates can be
modeled effectively by assuming Poiseuille flow through the matrix of mudstone seals. Flow rates calculated in
this way are about 0.4-1.0 m3 gas/m2/year, consistent with field observations.
Type:
Book chapter
,
NonPeerReviewed
Format:
text
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