Patents by Inventor Sylvain Darras

Sylvain Darras 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 the enhanced recovery of oil by injection of a polymer solution
    Patent number: 9631135
    Abstract: Process for enhanced oil recovery employing an aqueous solution comprising at least one linear or structured water-soluble copolymer obtained by polymerization: of at least 10 mol % of 2-acrylamido-2-methylpropanesulfonic acid monomer in the free acid and/or salified form, of at least 10 mol % of at least one comonomer chosen from the group consisting of acrylamide, N-vinylpyrrolidone (NVP) and acrylamide-derived monomers of formula (I): in which: R=H or CH3 or CH2COOR?, where R? is an alkyl comprising at most 3 carbon atoms, A is an N heterocycle comprising, in its ring, from 4 to 6 carbon atoms and optionally an ether functional group or a ketone functional group.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: April 25, 2017
    Assignee: S.P.C.M. SA
    Inventors: Cèdrick Favero, Sylvain Darras, Bruno Giovannetti
  • PROCESS FOR THE ENHANCED RECOVERY OF OIL BY INJECTION OF A POLYMER SOLUTION
    Publication number: 20140326458
    Abstract: Process for enhanced oil recovery employing an aqueous solution comprising at least one linear or structured water-soluble copolymer obtained by polymerization: of at least 10 mol % of 2-acrylamido-2-methylpropanesulfonic acid monomer in the free acid and/or salified form, of at least 10 mol % of at least one comonomer chosen from the group consisting of acrylamide, N-vinylpyrrolidone (NVP) and acrylamide-derived monomers of formula (I): in which: R=H or CH3 or CH2COOR?, where R? is an alkyl comprising at most 3 carbon atoms, A is an N heterocycle comprising, in its ring, from 4 to 6 carbon atoms and optionally an ether functional group or a ketone functional group.
    Type: Application
    Filed: January 14, 2013
    Publication date: November 6, 2014
    Applicant: S.P.C.M. SA
    Inventors: Cédrick Favero, Sylvain Darras, Bruno Giovannetti