Well drilling and servicing fluids which deposit an easily removable filter cake
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United States of America Patent
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Jul 21, 1998
Issued Date -
N/A
app pub date -
Oct 16, 1996
filing date -
Mar 15, 1994
priority date (Note) -
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Abstract
The invention provides alkaline water base well drilling and servicing fluids which deposit an easily degradable and removable filter cake on the sides of a borehole during well drilling and servicing operations. The fluids contain one or more polysaccharide polymers, sized bridging particles, and a peroxide selected from the group consisting of alkaline earth metal peroxides, zinc peroxide, and mixtures thereof. The fluids deposit a filter cake containing the peroxide.
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Cited Art Landscape
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