Patents by Inventor Igor Alekseevich Kiselev

Igor Alekseevich Kiselev 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: 10113103
    Abstract: A polymer material for proppant in the form of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters is obtained by mixing dicyclopentadiene with methacrylic esters and polymer stabilizers, heating the mixture to a temperature of 150-220° C., holding at said temperature for 15-360 minutes, and then cooling down to 20-50° C. A radical initiator and a catalyst are added successively to the resultant mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The polymer matrix is heated to a temperature of 50-340° C., is held at this temperature for 1-360 minutes and then is cooled to room temperature. A technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant material, providing a compressive strength of at least 150 MPa at a temperature of not less than 100° C.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 30, 2018
    Assignee: OTKRYTOE AKTSYONERNOE OBSCHESTVO “ROSNEFT OIL COMPANY”
    Inventors: Vladimir Vladimirovich Afanasiev, Sergey Anatolievich Alkhimov, Nataliya Borisovna Bespalova, Egor Vladimirovich Shutko, Tatyana Modestovna Yumasheva, Igor Alekseevich Kiselev, Olga Vasilievna Masloboyschikova
  • Patent number: 9926487
    Abstract: The increased thermal strength polymer proppant and method for producing the same relate to the oil and gas production technology using materials of high-molecular compounds, especially to proppants of polymer materials with high requirements for the physical and mechanical characteristics, utilized as propping granules in the oil and gas production by a method of hydraulic fracturing. The proppant is made of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The proppant represents microspheres having a roundness and sphericity of at least 0.9 for no less than 80% by weight, whose average size being in the range 0.25-1.1 mm and a bulk density being in the range of 0.5-0.7 g/cm3. The technical result is an increase in thermal strength of the proppant material, providing for a compressive strength of at least 150 MPa at a temperature of not less than 100° C.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 27, 2018
    Assignee: OTKRYTOE AKTSYONERNOE OBSCHESTVO “ROSNEFT OIL COMPANY”
    Inventors: Vladimir Vladimirovich Afanasiev, Sergey Anatolievich Alkhimov, Nataliya Borisovna Bespalova, Egor Vladimirovich Shutko, Tatyana Modestovna Yumasheva, Igor Alekseevich Kiselev, Olga Vasilievna Masloboyschikova
  • Publication number: 20160075938
    Abstract: A polymer material for proppant in the form of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters is obtained by mixing dicyclopentadiene with methacrylic esters and polymer stabilizers, heating the mixture to a temperature of 150-220° C., holding at said temperature for 15-360 minutes, and then cooling down to 20-50° C. A radical initiator and a catalyst are added successively to the resultant mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The polymer matrix is heated to a temperature of 50-340° C., is held at this temperature for 1-360 minutes and then is cooled to room temperature. A technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant material, providing a compressive strength of at least 150 MPa at a temperature of not less than 100° C.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 17, 2016
    Inventors: Vladimir Vladimirovich Afanasiev, Sergey Anatolievich Alkhimov, Nataliya Borisovna Bespalova, Egor Vladimirovich Shutko, Tatyana Modestovna Yumasheva, Igor Alekseevich Kiselev, Olga Vasilievna Masloboyschikova
  • Publication number: 20160060510
    Abstract: The increased thermal strength polymer proppant and method for producing the same relate to the oil and gas production technology using materials of high-molecular compounds, especially to proppants of polymer materials with high requirements for the physical and mechanical characteristics, utilized as propping granules in the oil and gas production by a method of hydraulic fracturing. The proppant is made of a metathesis-radically cross-linked mixture of oligocyclopentadienes and methylcarboxy norbornene esters. The proppant represents microspheres having a roundness and sphericity of at least 0.9 for no less than 80% by weight, whose average size being in the range 0.25-1.1 mm and a bulk density being in the range of 0.5-0.7 g/cm3. The technical result is an increase in thermal strength of the proppant material, providing for a compressive strength of at least 150 MPa at a temperature of not less than 100° C.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 3, 2016
    Applicant: OTKRYTOE AKTSYONERNOE OBSCHESTVO "ROSNEFT OIL COMPANY"
    Inventors: Vladimir Vladimirovich Afanasiev, Sergey Anatolievich Alkhimov, Nataliya Borisovna Bespalova, Egor Vladimirovich Shutko, Tatyana Modestovna Yumasheva, Igor Alekseevich Kiselev, Olga Vasilievna Masloboyschikova