Patents by Inventor Troy E. Knight

Troy E. Knight 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).

  • Publication number: 20220145163
    Abstract: The present disclosure provides for a sandstone-containing oil reservoir additive composition that includes (a) a nonionic wettability alteration agent having Formula (I): and (b) an injection fluid. For Formula (I), R is an alkyl residue from a branched secondary alcohol initiator, where R can have a carbon number of C4 to C10, x is from 3 to 10 and y is from 1 to 20. The injection fluid can be selected from the group consisting of sea water, engineered water, injection brine, produced brine or combinations thereof. The nonionic wettability agent in the sandstone reservoir additive composition can be from 0.01 weight percent (wt %) to 20 wt % based on the total weight of the sandstone reservoir additive composition. The sandstone-containing oil reservoir additive composition can be used in enhance oil recovery operations, such as a waterflooding operation or a carbon dioxide flooding operation.
    Type: Application
    Filed: February 17, 2020
    Publication date: May 12, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Amit Katiyar, Troy E. Knight, Pramod D. Patil, Neeraj Rohilla
  • Publication number: 20210163813
    Abstract: Surfactants constructed from three synthetic building blocks that contain multiple hydrocarbon chains, ethyleneamine, and alkyl sulfonate salt groups, were shown to possess good thermal stability, and foamability, and high foam profiles. The materials are targeted for high temperature foaming applications, such as foam flooding enhanced oil recovery to improve conformance control and other oil and gas downhole foaming applications.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 3, 2021
    Inventors: Wenke Miao, Peng Gao, Lixin You, Cheng Shen, Pramod D. Patil, Biplab Mukherjee, Troy E. Knight
  • Publication number: 20200231862
    Abstract: Disclosed is a temperature stabilized aqueous wettability composition and method of use for the recovery of petroleum from subterranean formulations. Said aqueous wettability composition comprises a polyethylene oxide nonionic surfactant, a disulfonated anionic surfactant, and one or more alcohol.
    Type: Application
    Filed: May 3, 2018
    Publication date: July 23, 2020
    Inventors: Troy E. Knight, Susan K. Falcone-Potts, Martha Hernandez, Amit Katiyar, Pramod D. Patil
  • Patent number: 10717921
    Abstract: The present invention includes a foam-forming composition for use in enhanced oil recovery, and a method of using said foam-forming composition for recovering oil. The foam-forming composition of the present invention comprises a nonionic surfactant, in particular an alcohol-alkoxylate, and an anionic surfactant, in particular an alkyl diphenyloxide (di)sulfonate, where the foam-forming composition promotes a formation of a stable foam formed of a CO2 and water.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 21, 2020
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: David L. Frattarelli, Joydeep Mukherjee, Susan K. Falcone-Potts, Martha Hernandez, Troy E. Knight, Pramod D. Patil
  • Patent number: 10662370
    Abstract: The present invention provides for a method of using a mixture of two or more nonionic surfactants for enhanced oil recovery and for an emulsion that includes carbon dioxide, a diluent and a mixture of two or more nonionic surfactants, where each nonionic surfactant is prepared with a double metal cyanide catalyst.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: May 26, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Adam L. Grzesiak, Robert M. Campbell, Jacob M. Crosthwaite, Amit Katiyar, Troy E. Knight, Pramod D. Patil
  • Publication number: 20190256763
    Abstract: The present invention provides methods of using a mixture of two or more nonionic surfactants for enhanced oil recovery, where each nonionic surfactant is prepared with a double metal cyanide catalyst. The present invention also provides for an emulsion that includes carbon dioxide, a diluent and the mixture of nonionic surfactants.
    Type: Application
    Filed: October 4, 2017
    Publication date: August 22, 2019
    Inventors: Adam L. Grzesiak, Robert M. Campbell, Jacob M. Crosthwaite, Amit Katiyar, Troy E. Knight, Pramod D. Patil
  • Patent number: 10336935
    Abstract: This invention relates to a foam-forming composition having good low temperature stability and method of use thereof for enhanced oil recovery. Said foam-forming composition comprises an anionic sulfonate surfactant, preferably an alpha-olefin sulfonate, a alkyl ether solvent, and water and is preferably stable to at least ?5 C. A preferred alkyl ether solvent has the formula C8H18O3, C8H16O3, or mixtures thereof. Preferred alpha-olefin sulfonate have 10 to 18 carbons, preferably 12 carbons. A preferred method for recovering oil from a reservoir comprises the periodic injection of gas and said foam-forming composition into the reservoir and contacting the oil in the reservoir with the foam so as to assist in the recovery of oil from the reservoir.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: July 2, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: David L. Frattarelli, Sayeed Abbas, Troy E. Knight, Aaron W. Sanders, Christopher J. Tucker, Caroline Woelfle-Gupta
  • Publication number: 20180319934
    Abstract: Produce diglycidyl-capped polyalkylene glycol by (a) providing epihalohydrin, a polyalkylene glycol that contains and ethylene oxide component and a Lewis acid; (b) coupling the epihalohydrin to the polyalkylene glycol using the Lewis acid as a catalyst to produce a coupling product; (c) stripping 1,4-dioxane from the coupling product; and (d) epoxidation of the coupling product by addition of a base to form diglycidyl-capped polyalkylene glycol in an organic phase.
    Type: Application
    Filed: October 19, 2016
    Publication date: November 8, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Troy E. Knight, Thomas C. Young, Gerald W. Dare, Hannah L. Crampton, Bruce D. Hook, Pasquale Sirignano, Daviele Vinci
  • Publication number: 20180305389
    Abstract: Prepare a branched alcohol-based sugar surfactant by: (a) providing an ether alcohol and a fully acetylated sugar where the ether alcohol has the structure of Structure (I); (b) coupling the ether alcohol with the acetylated sugar in the presence of a Lewis acid catalyst to form a branched glucoside acetate; and (c) deprotecting the glucoside acetate by removing the acetate moieties and replacing them with hydrogen atoms in the presence of a base to form a surfactant having the structure (II).
    Type: Application
    Filed: September 7, 2016
    Publication date: October 25, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Troy E. Knight, Nermeen W. Aboelella, Sayeed Abbas, Aaron W. Sanders
  • Publication number: 20180037809
    Abstract: The present invention includes a foam-forming composition for use in enhanced oil recovery, and a method of using said foam-forming composition for recovering oil. The foam-forming composition of the present invention comprises a nonionic surfactant, in particular an alcohol-alkoxylate, and an anionic surfactant, in particular an alkyl diphenyloxide (di)sulfonate, where the foam-forming composition promotes a formation of a stable foam formed of a CO2 and water.
    Type: Application
    Filed: April 28, 2016
    Publication date: February 8, 2018
    Inventors: David Frattarelli, Joydeep Mukherjee, Susan K. Falcone-Potts, Martha Hernandez, Troy E. Knight, Pramod D. Patil
  • Publication number: 20160083642
    Abstract: This invention relates to a foam-forming composition having good low temperature stability and method of use thereof for enhanced oil recovery. Said foam-forming composition comprises an anionic sulfonate surfactant, preferably an alpha-olefin sulfonate, a alkyl ether solvent, and water and is preferably stable to at least ?5C. A preferred alkyl ether solvent has the formula C8H18O3, C8H16O3, or mixtures thereof. Preferred alpha-olefin sulfonate have 10 to 18 carbons, preferably 12 carbons. A preferred method for recovering oil from a reservoir comprises the periodic injection of gas and said foam-forming composition into the reservoir and contacting the oil in the reservoir with the foam so as to assist in the recovery of oil from the reservoir.
    Type: Application
    Filed: May 22, 2014
    Publication date: March 24, 2016
    Inventors: David L. Frattarelli, Sayeed Abbas, Troy E. Knight, Aaron W. Sanders, Christopher J. Tucker, Caroline Woelfle-Gupta