Composition comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose
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United States of America Patent
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Jan 9, 1990
Issued Date -
N/A
app pub date -
Aug 16, 1988
filing date -
Oct 30, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A novel cementing composition comprising a hydraulic cement and, as a fluid loss agent, water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose, are disclosed. Preferably, the cementing composition further comprises water-soluble, nonionic hydroxyethyl cellulose as a second fluid loss agent. A novel aqueous slurry containing the cementing composition, a novel process of using the aqueous slurry to fill an annulus between a borehole wall and casing, and a novel composition of matter comprising specified amounts of water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose, are also disclosed.
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