Patents by Inventor Elena Pershikova Tomilina

Elena Pershikova Tomilina 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).

  • Compositions and Methods for Completing Subterranean Wells
    Publication number: 20150240142
    Abstract: Well treatment compositions comprise water, a lipophilic anionic surfactant, a hydrophilic non-ionic surfactant, a second non-ionic surfactant and a water-miscible solvent. Optionally, a second solvent may be incorporated. When added to spacer fluids, chemical washes or both, the compositions promote the removal of non-aqueous drilling fluids from casing surfaces. Additionally, the treated casing surfaces are water wet, thereby promoting optimal bonding to cement.
    Type: Application
    Filed: April 9, 2013
    Publication date: August 27, 2015
    Inventors: Slaheddine Kefi, Nora Bennani, Elena Pershikova Tomilina