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Journal articles
A Silicate Based Process for Plugging the Near Well Bore Formation
Abstract : A method for treating the surrounding of a well using a reactive suspension is studied, using silicate based solutions. They present the following key qualities: high performance, long term chemical stability, good injectivity, little environmental impact. We present an experimental investigation of the precipitation of commercial low-cost potassium silicate solutions, using a weak acid to lower the pH. Experiments were performed between 20°C and 60°C, by adding a non-hazardous acidic compound to the silica based solution. Bulk gelation times were estimated between a few minutes to 4 days. A coreflood injection experiment was then performed on an analog sandstone sample, representative of CO 2 formation, by using an optimum mixture with viscosity close to water. After a few days, a breakthrough experiment was performed by increasing gradually the differential pressure across the sample. Preliminary results indicate a very large strength of the order of 600 bar/m.
Cited literature [17 references]
https://hal-ifp.archives-ouvertes.fr/hal-01740288
Contributor : Nadine Couëdel <>
Submitted on : Wednesday, March 21, 2018 - 5:48:10 PM
Last modification on : Thursday, February 7, 2019 - 4:29:24 PM
Long-term archiving on: : Thursday, September 13, 2018 - 7:10:07 AM
Contributor : Nadine Couëdel <>
Submitted on : Wednesday, March 21, 2018 - 5:48:10 PM
Last modification on : Thursday, February 7, 2019 - 4:29:24 PM
Long-term archiving on: : Thursday, September 13, 2018 - 7:10:07 AM
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