Glycol based drilling fluid
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United States of America Patent
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Sep 18, 2001
Grant Date -
N/A
app pub date -
Mar 11, 1998
filing date -
Sep 11, 1995
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Abstract
This invention relates to an improved glycol based aqueous drilling fluid. The drilling fluid of this invention has demonstrated utility in controlling and/or reducing swelling of clay formations in the drilling of subterranean wells.
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