Foam for Environmental Remediation: Generation and Blocking Effect

Foam for Environmental Remediation: Generation and Blocking Effect Foam injection is widely used in petroleum industry for enhanced oil recovery, but has received limited attention for the application of environmental remediation at the field scale. This study analyses the use of foam as a blocking agent, i.e. to confine a source zone of contaminant in groundwater. Laboratory experiments in 1D porous media with a commercially available biodegradable surfactant performed on columns using pre-generated foam show that the foam reduces the relative water permeability $$k_{\mathrm {rw}}$$ k rw by a factor of 100–1000. $$k_{\mathrm {rw}}$$ k rw was measured right after foam placement by injecting only water (drainage test) and corresponding to the relative permeability of water in presence of foam. A comparison to a theoretical two-phase flow in porous medium shows that the Van Genuchten equation can be used to estimate the $$k_{\mathrm {rw}}$$ k rw value. In the field, experiments done on two different porous media and using three different injection techniques (co-injection, surfactant alternating gas, pre-generation) show a clear confining ability of the produced foam. A $$k_{\mathrm {rw}}$$ k rw reduction by a factor of 1000 is observed very close to the well and close to 100 at 1 m of this well. These values were obtained with a much weaker foam than the laboratory one in order to allow the injection at shallow depth environmental compatible ssure ( $$\le $$ ≤ 4 bar). The reduction in water relative permeability can occur in the presence of a foam that does not cause an extreme reduction of the mobility, indicating that this reduction does not depend on resistance factor (RF) values. There is potential for improvement of the foam as it loses its efficiency with increasing distance from the injection well. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Transport in Porous Media Springer Journals

Foam for Environmental Remediation: Generation and Blocking Effect

Loading next page...
 
/lp/springer_journal/foam-for-environmental-remediation-generation-and-blocking-effect-nD30UPLSMR
Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media B.V., part of Springer Nature
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Industrial Chemistry/Chemical Engineering; Hydrology/Water Resources; Civil Engineering; Hydrogeology; Classical and Continuum Physics
ISSN
0169-3913
eISSN
1573-1634
D.O.I.
10.1007/s11242-018-1097-z
Publisher site
See Article on Publisher Site

Abstract

Foam injection is widely used in petroleum industry for enhanced oil recovery, but has received limited attention for the application of environmental remediation at the field scale. This study analyses the use of foam as a blocking agent, i.e. to confine a source zone of contaminant in groundwater. Laboratory experiments in 1D porous media with a commercially available biodegradable surfactant performed on columns using pre-generated foam show that the foam reduces the relative water permeability $$k_{\mathrm {rw}}$$ k rw by a factor of 100–1000. $$k_{\mathrm {rw}}$$ k rw was measured right after foam placement by injecting only water (drainage test) and corresponding to the relative permeability of water in presence of foam. A comparison to a theoretical two-phase flow in porous medium shows that the Van Genuchten equation can be used to estimate the $$k_{\mathrm {rw}}$$ k rw value. In the field, experiments done on two different porous media and using three different injection techniques (co-injection, surfactant alternating gas, pre-generation) show a clear confining ability of the produced foam. A $$k_{\mathrm {rw}}$$ k rw reduction by a factor of 1000 is observed very close to the well and close to 100 at 1 m of this well. These values were obtained with a much weaker foam than the laboratory one in order to allow the injection at shallow depth environmental compatible ssure ( $$\le $$ ≤ 4 bar). The reduction in water relative permeability can occur in the presence of a foam that does not cause an extreme reduction of the mobility, indicating that this reduction does not depend on resistance factor (RF) values. There is potential for improvement of the foam as it loses its efficiency with increasing distance from the injection well.

Journal

Transport in Porous MediaSpringer Journals

Published: Jun 4, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off