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Emulsion Design Tool

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Treatment Performance in Barriers <br />as Substrate is Consumed

Text Box: Treatment efficiency maximum when excess substrate is present will drop as substrate is consumed Substrate Scaling Factor (SFS) SFS = fraction of substrate consumed when treatment < acceptable SFS  time to reinject SFS typically varies from 0.3 to 0.6

Treatment efficiency

maximum when excess <br />substrate is present

will drop as substrate <br />is consumed

Substrate Scaling Factor (SFS)

SFS = fraction of substrate <br /> consumed when <br /> treatment < acceptable

SFS ? time to reinject

SFS typically varies from 0.3 to 0.6

Graph illustrating decline in treatment efficiency as substrate is depleted.

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Lecture Notes

Field monitoring results from emulsified oil barriers indicates that treatment efficiency is fairly constant when excess oil is present.

However as the oil begins to be depleted, treatment efficiency will gradually decline.

In the design tool, we account for this decline in treatment efficiency using a substrate scaling factor.

The substrate scaling factor is equal to the fraction of oil consumed when treatment declines below acceptable levels.

At this point, you would typically inject more oil to rejuvenate the barrier.

Past experience suggests that treatment efficiency will drop significantly once 30 to 60% of the injected oil has been consumed.