Patents by Inventor Allan Jeffrey Twynam

Allan Jeffrey Twynam 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).

  • Gravel pack fluid composition and emulsion therefor
    Patent number: 9145762
    Abstract: Gravel pack composition containing gravel and a water-in-oil emulsion including (a) an organic continuous phase comprising 0.1 to 5 vol % of the emulsion of non-ionic or cationic surfactant and 0.25 to 3 vol % of the emulsion of sorbitan ester; (b) a dispersed aqueous phase comprising 0.05 to 3 vol % of the emulsion of a partial ester of a polyol with at least one C6 to C22 fatty acid and at least one of an acid, acid precursor, and a chelating agent; and (c) a density control agent. The fluid can display a delayed break of up to about 72 hours to enable clean-up of mud cake.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: September 29, 2015
    Assignee: BP EXPLORATION OPERATING COMPANY LIMITED
    Inventors: Dana Aytkhozhina, Roman Vladimirovich Bulgachev, Martin Alexander Ross, Allan Jeffrey Twynam
  • GRAVEL PACK FLUID COMPOSITION AND EMULSION THEREFOR
    Publication number: 20120165233
    Abstract: A gravel pack composition comprising i) a water-in-oil emulsion comprising: a) an organic continuous phase comprising 0.1 to 5 vol % of the emulsion of non-ionic or cationic surfactant and 0.25 to 3 vol % of the emulsion of sorbitan ester; b) a dispersed aqueous phase comprising 0.05 to 3 vol % of the emulsion of a partial ester of a polyol with at least one C6 to C22 fatty acid and at least one of an acid, acid precursor, and a chelating agent; and c) a density control agent; and ii) gravel. The fluid can display a delayed break of up to about 72 hours to enable clean-up of mud cake.
    Type: Application
    Filed: August 20, 2010
    Publication date: June 28, 2012
    Inventors: Dana Aytkhozhina, Roman Vladimirovich Bulgachev, Martin Alexander Ross, Allan Jeffrey Twynam