Method for gas capping of idle geothermal steam wells
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United States of America Patent
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-
Oct 4, 1983
Grant Date -
N/A
app pub date -
Dec 7, 1981
filing date -
Dec 7, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for capping an idle geothermal steam well so as to prevent hydrogen sulfide emissions and well damage due to steam condensation includes replacing geothermal steam in a well borehole with gas, perferably an inert gas such as nitrogen, and sealing the well at the wellhead. Thereafter additional quantities of the gas are bled into the well borehole at a rate that substantially prevents steam condensation in the borehole. The method includes purging the well bore with air sufficiently to assure all steam is swept out of the well before the gas is introduced.
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