×

Cementing composition and aqueous hydraulic cementing solution comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose

  • US 4,784,693 A
  • Filed: 10/30/1987
  • Issued: 11/15/1988
  • Est. Priority Date: 10/30/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. A cementing composition comprising a hydraulic cement and, as a fluid loss control additive, a water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose having a hydroxyethyl M.S., of at least about 1.5, wherein the hydrophobic modifier is a long chain alkyl group having 6 to 25 carbon atoms attached to the cellulose in an amount of from about 0.2 to about 4%, by weight of the total weight of the water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×