| abstract |
A cementing composition comprising a hydraulic cement and, as a fluid loss agent, a water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose having a hydroxyethyl M.S. of at least about 1.5 and a long chain alkyl group modifier having 6 to 25 carbon atoms attached to the cellulose, and its use as an oil well casing cement, are disclosed. |