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Well Grouting and Casing Temperature Increases
Author(s) -
Johnson Roy C.,
Kurt Carl E.,
Dunham George F.
Publication year - 1980
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1980.tb03365.x
Subject(s) - casing , grout , geotechnical engineering , materials science , petroleum engineering , composite material , geology
ABSTRACT Grouting of water wells is commonly done to increase the well life and to protect the water supply. When Portland cement‐based grouts cure, a by‐product of the process is heat of hydration which causes increased temperatures in the vicinity of the well casing. Since thermoplastic casing materials lose significant strength at elevated temperatures, it is important to know what range of temperature increases might be associated with the grouting operation. A series of experiments has been performed to determine these temperature increases. Wells were simulated in the laboratory and temperatures monitored throughout the casing‐grout‐soil system. Results indicate that under certain circumstances the casing temperature could increase by as much as 180° F; however, for nominal 1 1/2‐inch grout thicknesses, casing temperature increases between 17° F and 26° F were measured.