Patents Examined by Roger J. Schoeppei
  • Use of taurine additives in enhanced oil recovery with anionic surfactants
    Patent number: 4976315
    Abstract: A method is disclosed for increasing the recovery of oil in enhanced oil recovery operations employing anionic surfactant by blending a taurine with said anionic surfactant. The taurine may also increase the salt and divalent ion tolerance of the anionic surfactant.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: December 11, 1990
    Assignee: Texaco Inc.
    Inventors: Gabriel Prukop, Chhiv K. Chea