Patents by Inventor Dimitri M. Khramov

Dimitri M. Khramov 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).

  • Patent number: 11447680
    Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: September 20, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dimitri M. Khramov, Reda Karoum, Stephen Cliffe
  • Patent number: 11414586
    Abstract: Compositions may contain an oleaginous base fluid, and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches. Methods may include emplacing a wellbore fluid into a wellbore, wherein the wellbore fluid contains an oleaginous base fluid; and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 16, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yiyan Chen, Dimitri M. Khramov
  • Publication number: 20220220356
    Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth)acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.
    Type: Application
    Filed: May 15, 2020
    Publication date: July 14, 2022
    Inventors: Dimitri M. Khramov, Stephen Cliffe, Reda Karoum
  • Patent number: 11377579
    Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from a group containing alkyl amine, alkanolamine, and polyamine. Methods may include drilling a wellbore with an oil-based mud, wherein the oil-based mud is an invert emulsion containing an emulsifier stabilizing the invert emulsion, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from the group of alkyl amine, alkanolamine, and polyamine.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 5, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yiyan Chen, Dimitri M. Khramov, Reda Karoum
  • Publication number: 20210323909
    Abstract: Methods may include quantifying the concentration of residual free amine and/or free carboxylic acid in a product mixture prepared from a reaction of a multireactive species and a fatty reagent; verifying that the concentration for the free amine and/or free acid in the product mixture is within an acceptable threshold for a given application; and combining the product mixture with one or more wellbore fluid components to generate the wellbore fluid. In another aspect, methods may include including reacting the multireactive species and a fatty reactant to generate a product mixture; quantifying the concentration of residual free amine and/or free carboxylic acid in the product mixture; verifying that the concentration for the free amine and/or free acid in the product mixture is within an acceptable threshold for a given application; and collecting the product mixture.
    Type: Application
    Filed: August 2, 2018
    Publication date: October 21, 2021
    Inventors: Dimitri M. Khramov, Yiyan Chen, Albert Okhrimenko
  • Patent number: 11066591
    Abstract: A composition comprising an oleaginous base fluid, an emulsifier and a liquid tertiary amide is disclosed. A wellbore fluid may include an oleaginous continuous phase, a non-oleaginous discontinuous phase and the composition to stabilize the non-oleaginous discontinuous phase within the oleaginous continuous phase. A method comprising adding the composition to a wellbore fluid and emplacing the wellbore fluid mixed with the composition into a wellbore is also provided.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 20, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dimitri M Khramov, Yiyan Chen
  • Patent number: 11028308
    Abstract: Wellbore fluids and methods of drilling with the wellbore fluids are provided. One wellbore fluid may include an oleaginous continuous phase, a non-oleaginous discontinuous phase, and a polymer having a polycyclic backbone. One method may include pumping the wellbore fluid into a wellbore through an earthen formation.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: June 8, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yiyan Chen, Dimitri M. Khramov, Glynda A. Addicks
  • Publication number: 20200362221
    Abstract: Wellbore fluid compositions may include an oleaginous base fluid; and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 20 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid measured by FANN 35 rheometer at 3 rpm and 150° F. is in the range of 8 to 12. Methods may include emplacing a wellbore fluid in a wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a polymeric rheology modifier incorporating a polar comonomer at a percent by weight (wt %) in the range of 1 wt % to 50 wt %; wherein the low shear rate viscosity (LSRV) of the wellbore fluid is in the range of 8 to 12.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 19, 2020
    Inventors: Dimitri M. Khramov, Yiyan Chen, Stephen Cliffe, Reda Karoum
  • Publication number: 20200231860
    Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 23, 2020
    Inventors: Dimitri M Khramov, Reda Karoum, Stephen Cliffe
  • Publication number: 20200165505
    Abstract: Compositions may contain an oleaginous base fluid, and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches. Methods may include emplacing a wellbore fluid into a wellbore, wherein the wellbore fluid contains an oleaginous base fluid; and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches.
    Type: Application
    Filed: January 29, 2020
    Publication date: May 28, 2020
    Inventors: Yiyan Chen, Dimitri M. Khramov
  • Publication number: 20200079990
    Abstract: Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from a group containing alkyl amine, alkanolamine, and polyamine. Methods may include drilling a wellbore with an oil-based mud, wherein the oil-based mud is an invert emulsion containing an emulsifier stabilizing the invert emulsion, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from the group of alkyl amine, alkanolamine, and polyamine.
    Type: Application
    Filed: December 18, 2017
    Publication date: March 12, 2020
    Inventors: Yiyan Chen, Dimitri M. Khramov, Reda Karoum
  • Patent number: 10570325
    Abstract: Compositions may contain an oleaginous base fluid, and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches. Methods may include emplacing a wellbore fluid into a wellbore, wherein the wellbore fluid contains an oleaginous base fluid; and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: February 25, 2020
    Assignee: M-I L.L.C.
    Inventors: Yiyan Chen, Dimitri M. Khramov
  • Publication number: 20190322920
    Abstract: A composition comprising an oleaginous base fluid, an emulsifier and a liquid tertiary amide is disclosed. A wellbore fluid may include an oleaginous continuous phase, a non-oleaginous discontinuous phase and the composition to stabilize the non-oleaginous discontinuous phase within the oleaginous continuous phase. A method comprising adding the composition to a wellbore fluid and emplacing the wellbore fluid mixed with the composition into a wellbore is also provided.
    Type: Application
    Filed: December 19, 2017
    Publication date: October 24, 2019
    Inventors: Dimitri M Khramov, Yiyan Chen
  • Publication number: 20180244976
    Abstract: A method of drilling a wellbore includes pumping an oleaginous wellbore fluid into a wellbore, the oleaginous wellbore fluid including an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase; an organophilic clay; a weighting agent; and a wetting agent having an HLB ranging from about 4 to 10.5 that it selected such that the oleaginous wellbore fluid has a 600 rpm dial value at 40° F. of less than about 300 and a 10 minute gel strength of less than about 40 lbf/100 ft2.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Applicant: M-I L.L.C.
    Inventors: Stephen Cliffe, Steven Young, Mario Bouguetta, Dimitri M. Khramov
  • Publication number: 20180244975
    Abstract: An additive composition includes a rheology modifier selected from alcohol ethoxylates, amine ethoxylates, or ethylene oxide/propylene oxide copolymers, wherein the rheology modifier has an HLB ranging from about 4 to 10; and a winterizing agent that is at least one aliphatic non-ionic surfactant that has a branched structure and/or includes at least one unsaturation, wherein the winterizing agent has an HLB value between about 8 and 10.5.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Applicant: M-I L.L.C.
    Inventors: Dimitri M. Khramov, Reda Karoum, Stephen Cliffe
  • Publication number: 20180142135
    Abstract: A wellbore fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase and a polymer having a polycyclic backbone. A method of drilling comprising pumping the said wellbore fluid into a wellbore through an earthen formation is also described.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Applicant: M-I L.L.C.
    Inventors: Yiyan Chen, Dimitri M. Khramov, Glynda A. Addicks
  • Publication number: 20170190945
    Abstract: Compositions may contain an oleaginous base fluid, and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches. Methods may include emplacing a wellbore fluid into a wellbore, wherein the wellbore fluid contains an oleaginous base fluid; and a branched amidoamine surfactant prepared from the reaction of an alkylene amine or an oligoalkylene amine and a branched acid having a C4 to C24 primary hydrocarbon chain, and having one or more C1 to C24 branches.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 6, 2017
    Applicant: M-I L.L.C.
    Inventors: Yiyan Chen, Dimitri M. Khramov