Drilling and completion fluid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 25, 1988
Grant Date -
N/A
app pub date -
May 26, 1987
filing date -
May 26, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drilling mud comprises water, a gelling agent, a defoamer and at least 6% by volume of a glycerine selected from the group consisting of glycerine, polyglycerine and mixtures thereof. The drilling mud is normally prepared by adding to a pre-existing water based mud having therein the gelling agent, caustic soda, lignite and lignosulfonate. A completion fluid comprises water, a defoamer and at least 6% by volume of a glycerine selected from the group consisting of glycerine, polyglycerine and mixtures thereof.
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