In the context Chemical EOR,
Is it feasible to explicitly delineate the contributions -
in the variation of IFT -
resulting from changes in temperature
and that from changes in surfactant concentration
along the interface?
In the estimation of changes in IFT
resulting from temperature gradient -
along the interface,
we require the data on the changes in the temperature
as a function of changes in the contact angle, i.e., ∂T/∂θ (which is difficult to obtain) –
in addition to –
the changes in IFT with respect to
the changes in temperature, i.e., ∂σ/∂T.
Similarly,
in the estimation of changes in IFT
resulting from surfactant-concentration gradient -
along the interface,
we require the data on
the changes in surfactant concentration as a function of
the changes in the contact angle, i.e., ∂C/∂θ (which is difficult to obtain) – in addition to –
the changes in IFT
with respect to
the changes in surfactant concentration, i.e., ∂σ/∂C.
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