Patents by Inventor Linda A. Verkruyse

Linda A. Verkruyse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ether sulfoxide compounds for enhanced oil recovery
    Patent number: 4944346
    Abstract: A process for recovering crude oil from a subterranean formation comprising injecting into the formation a liquid composition consisting essentially of a specific surfactant in an aqueous medium, driving the liquid composition through said formation to displace oil from said formation and recovering said oil in a production well. The surfactant has the general formula ##STR1## wherein R.sup.1 =C.sub.1 -C.sub.30 alkyl or alkylaryl, R.sup.2 =C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.3 =C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.4 =C.sub.1 to C.sub.12 alkyl or alkylaryl, R.sup.5 =H or C.sub.1 -C.sub.12 alkyl or alkylaryl, x and y are integers from 0 to 100, and z is an integer from 1 to 4.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: July 31, 1990
    Assignee: Atlantic Richfield Company
    Inventors: Roger A. Grey, Lawrence J. Karas, Linda A. Verkruyse