Patents by Inventor Arthur C. Hall

Arthur C. Hall 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).

  • Method for cleaning a core sample from a subterranean formation of solid contaminant particles
    Patent number: 4687523
    Abstract: A core sample from a subterranean formation is injected with an aqueous fluid and a pressurized gas which is soluble in the aqueous fluid. The fluid pressure is maintained within the core sample for a predetermined soak period. The core sample is then rapidly depressurized to atmospheric pressure so that gas is very rapidly or dynamically evolved out of solution within the core sample and rapidly transports solid contaminant particles to the outer surface of the core sample where they may be removed.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: August 18, 1987
    Assignee: Mobil Oil Corporation
    Inventors: Arthur C. Hall, E. Frank Schultz, Ludwig D. Wiener
  • Method for inhibition of carbonate dissolution in the recovery of oil utilizing CO.sub.2
    Patent number: 4410043
    Abstract: Recovery of oil in a subterranean oil-bearing formation comprising injecting a slug of an aqueous solution containing a water-soluble salt comprising sodium oxalate or sodium fluoride, injecting a slug of CO.sub.2 and injecting a driving fluid to displace the oil toward a production well for recovery. The water-soluble salt forms an insoluble precipitate with calcium ions in the formation and preserves more of the injected CO.sub.2 for oil displacement including preventing undesirable changes in formation permeability.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: October 18, 1983
    Assignee: Mobil Oil Corporation
    Inventors: Arthur C. Hall, Franklin R. Lunsford