Field Test of Enhanced Remedial Amendment Delivery Using a Shear-Thinning Fluid
| Autor: | Timothy C. Johnson, Lirong Zhong, David T. Adamson, Thomas W. Wietsma, Rob D. Mackley, Vincent R. Vermeul, Christian D. Johnson, Michael J. Truex, Jacob A. Horner, Jonathan N. Thomle, Michal W. Rysz, Martinus Oostrom, Darrell R. Newcomer, Charles J. Newell, Brad G. Fritz |
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| Rok vydání: | 2015 |
| Předmět: |
geography
geography.geographical_feature_category Petroleum engineering Environmental remediation Amendment Environmental engineering Aquifer Permeability (earth sciences) TRACER Environmental science Distribution uniformity Electrical resistivity tomography Groundwater Water Science and Technology Civil and Structural Engineering |
| Zdroj: | Groundwater Monitoring & Remediation. 35:34-45 |
| ISSN: | 1069-3629 |
| DOI: | 10.1111/gwmr.12101 |
| Popis: | Heterogeneity of hydraulic properties in aquifers may lead to contaminants residing in lower-permeability zones where it is difficult to deliver remediation amendments using conventional injection processes. The focus of this effort is to examine use of a shear-thinning fluid (STF) to improve the uniformity of remedial amendment distribution within a heterogeneous aquifer. Previous studies have demonstrated the significant potential of STFs for improving remedial amendment delivery in heterogeneous aquifers, but quantitative evaluation of these improvements from field applications are lacking. A field-scale test was conducted that compares data from successive injection of a tracer in water followed by injection of a tracer in a STF to evaluate the impact of the STF on tracer distribution uniformity in the presence of permeability contrasts within the targeted injection zone. Data from tracer breakthrough at multiple depth-discrete monitoring intervals and electrical resistivity tomography showed that inclusion of STF in the injection solution slowed movement in high-permeability pathways, improved delivery of amendment to low-permeability materials, and resulted in better uniformity in injected fluid distribution within the targeted treatment zone. |
| Databáze: | OpenAIRE |
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