Patents by Inventor Mohamed Zerhboub

Mohamed Zerhboub 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).

  • Product and process for acid diversion in the treatment of subterranean formations
    Patent number: 5203413
    Abstract: The invention relates to the treatment by a fluid, or more generally by an acid fluid, of subterranean formations located in particular around an oil, gas, water or geothermal well.Acid is diverted towards the zone to be treated by a surfactant flush, the injection of a foam and then the injection of an acid/surfactant composition. These operations are repeated as often as required, increasing at each stage representing approximately 80 cm (20 to 25 inches) of treatment in terms of height the quantity of foam injected.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: April 20, 1993
    Assignee: Dowell Schlumberger Incorporated
    Inventor: Mohamed Zerhboub