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U.S. Department of Energy
Office of Scientific and Technical Information

Liquid fluid loss control additive for oil field cements

Patent ·
OSTI ID:6263937
A liquid fluid loss control additive is described for oil field cements consisting essentially of a major amount of a liquid hydrocarbon, the balance of the additive comprising one or more hydrophilic water soluble polymers present in the additive in an amount in the range of from about 1% to about 50% by weight of the additive, an organophilic clay suspending agent present in the additive in an amount in the range of from about 1% to about 5% by weight of the additive, an organic sulfonate dispersant selected from the group consisting of the salts of polyvinyl sulfonic acid and naphthalene sulfonic acid condensed with formaldehyde present in the additive in an amount in the range of from about 1% to about 25% by weight of the additive, a polyamide amine surfactant for oil wetting the polymer selected from the group consisting of the condensation products of fatty acids having in the range of from about 14 to about 22 carbon atoms and ethylene amine compounds present in the additive in an amount in the range of from about 0.1% to about 1.0% by weight of the additive, and a surfactant for stripping liquid hydrocarbon from the polymer when in contact with water selected from the group consisting of aliphatic alcohols having in the range of from about 6 to about 18 carbon atoms reacted within the range of from about 5 to about 10 moles of ethylene oxide per mole and octyl, nonyl and dodecyl phenol reacted with in the range of from about 4 to about 20 moles of ethylene oxide per mole present in the additive in an amount in the range of from about 1% to about 10% by weight of the additive.
Assignee:
Halliburton Co., Duncan, OK
Patent Number(s):
US 4687516
OSTI ID:
6263937
Country of Publication:
United States
Language:
English