Oil well completion fluid
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United States of America Patent
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-
Jun 4, 1985
Grant Date -
N/A
app pub date -
Mar 11, 1983
filing date -
Mar 11, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A well-treating fluid of high density, solids-free and corrosion-resistance is formed comprising an aqueous solution of at least 50% by weight tetrapotassium pyrophosphate and a salt which can be either monopotassium orthophosphate, dipotassium orthophosphate or tripotassium orthophosphate, or mixtures thereof, wherein the salt is present in amounts sufficient to yield a predetermined pH in said fluid of about 8.5 to about 12, a predetermined specific gravity of at least about 1.65, and has high resistance to recrystallization of its solutes.
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