Patents by Inventor Douglas E. Slocombe

Douglas E. Slocombe 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).

  • Low solids well servicing fluids
    Patent number: 4411801
    Abstract: An emulsifying composition for preparing low solids drilling fluids containing a mixture of polyoxyethylene glycol 500 mono-tallate, nonyl phenol ethoxylate containing approximately 43% by weight of oxyethylene groups and nonyl phenol ethoxylate containing approximately 65% by weight of oxyethylene groups; a well servicing fluid comprising an aqueous medium, a liquid hydrocarbon coating agent and an emulsifying amount of the emulsifying compositions; and a method of servicing a well during drilling, fracturing and completing operations.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: October 25, 1983
    Assignee: NL Industries, Inc.
    Inventors: Daniel G. Pomerleau, Douglas E. Slocombe, Kenneth H. Watts