Patents by Inventor Martha Josefina Parra

Martha Josefina Parra 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 of produce low viscosity stable crude oil emulsion
    Patent number: 5863301
    Abstract: A heavy hydrocarbon, oil-in-water emulsion that has a relatively low viscosity for improved transport is disclosed. The emulsion is produced by combining the heavy hydrocarbon with an aqueous solution of emulsifier with agitation. The emulsifier has an HLB value of about 13 to about 16. The emulsifier can be anionic, nonionic, amphoteric, or a mixture thereof. Stirring is effected at medium shear values of about 0.1 sec.sup.-1 to about 20 sec.sup.-1 and at a mixer speed of 50 to 2000 rpm. The mixer imparts sufficient power and shear to the emulsion so that a mean oil droplet size of about 30 .mu.m is obtained.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: January 26, 1999
    Assignee: Empresa Colombiana de Petroleos ("ECOPETROL")
    Inventors: Jorge Luis Grosso, Martha Josefina Parra, Omar Caceres, Edelmira Afanador, Humberto Vidales, Fabio Enrique Hernandez, Rigoberto Barrero, Miguel Ruiz