Patents by Inventor Hercilio Jose Rivas Siervo

Hercilio Jose Rivas Siervo 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).

  • Process for preparing thermally stable oil-in-water and water-in-oil emulsions
    Patent number: 9109151
    Abstract: A method for preparing a thermally stable well servicing fluid in the form of an oil-in-water (O/W) macroemulsion, a water-in-oil (W/O) macroemulsion or a water-in-oil (W/O) microemulsion at the well drilling location is provided. The servicing fluid is prepared by mixing a hydrocarbon phase, a water phase and a surfactant phase to obtain either an O/W macroemulsion, a W/O macroemulsion or a W/O microemulsion. The surfactant phase comprises a first surfactant and/or a second surfactant. The first surfactant comprises a fatty acid mixture and a hygroscopic first additive. The second surfactant comprises a C4-C6 alcohol. Whether or not an O/W macroemulsion, W/O macroemulsion or a W/O microemulsion is produced is determined by the concentration of the phases, the first surfactant, the second surfactant and the timing upon which the first additive, water phase and second surfactant are introduced to the mixture.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: August 18, 2015
    Assignee: Intevep, S.A.
    Inventors: Xiomara Gutiérrez, Luis Marcano, Migdalia Carrasquero, Abel Ojeda, José Blanco, Hercilio José Rivas Siervo
  • Process for preparing thermally stable oil-in-water and water-in-oil emulsions
    Publication number: 20100022421
    Abstract: A method for preparing a thermally stable well servicing fluid in the form of an oil-in-water (O/W) macroemulsion, a water-in-oil (W/O) macroemulsion or a water-in-oil (W/O) microemulsion at the well drilling location is provided. The servicing fluid is prepared by mixing a hydrocarbon phase, a water phase and a surfactant phase to obtain either an O/W macroemulsion, a W/O macroemulsion or a W/O microemulsion. The surfactant phase comprises a first surfactant and/or a second surfactant. The first surfactant comprises a fatty acid mixture and a hygroscopic first additive. The second surfactant comprises a C4-C6 alcohol. Whether or not an O/W macroemulsion, W/O macroemulsion or a W/O microemulsion is produced is determined by the concentration of the phases, the first surfactant, the second surfactant and the timing upon which the first additive, water phase and second surfactant are introduced to the mixture.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 28, 2010
    Applicant: INTEVEP, S.A.
    Inventors: Xiomara Gutierrez, Luis Marcano, Migdalia Carrasquero, Abel Ojeda, Jose Blanco, Hercilio Jose Rivas Siervo