Patents by Inventor Sunil Kokal

Sunil Kokal 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: 10047276
    Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: August 14, 2018
    Assignee: Saudi Arabian Oil Company
    Inventors: Fawaz Al-Otaibi, Yun Chang, Sunil Kokal, Howard Schmidt
  • Publication number: 20180045704
    Abstract: A dual core flooding apparatus is disclosed. The dual core flooding apparatus includes at least two core holders each configured to contain a core plug. The dual core flooding apparatus includes a fluids delivery system configured to inject one or more fluids into the core holders and core plugs. The dual core flooding apparatus includes an image capture system, a density and viscosity measurement system, and at least two oil/water separators. The dual core flooding apparatus also includes at least two back pressure regulators configured to maintain a pore pressure in the core plugs and an automated confining pressure system configured to maintain a confining pressure in each core holder. The dual core flooding apparatus further includes a data acquisition system, differential pressure measurement systems, and effluent measurement systems.
    Type: Application
    Filed: March 8, 2017
    Publication date: February 15, 2018
    Inventors: Fawaz Al-Otaibi, Xianmin Zhou, Ahmed A. Eidan, Sunil Kokal, Almohannad A. Alhashboul
  • Publication number: 20170088768
    Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Applicant: Saudi Arabian Oil Company
    Inventors: Fawaz Al-Otaibi, Yun Chang, Sunil Kokal, Howard Schmidt
  • Patent number: 9546316
    Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: January 17, 2017
    Assignee: Saudi Arabian Oil Company
    Inventors: Fawaz Al-Otaibi, Yun Chang, Sunil Kokal, Howard Schmidt
  • Publication number: 20160160116
    Abstract: In one aspect, a method of recovering hydrocarbons from a subterranean zone includes flowing carbon dioxide in a first state into the subterranean zone including hydrocarbons, wherein a density of the carbon dioxide in the first state is greater than a density of carbon dioxide in a gaseous state, and recovering at least a portion of the hydrocarbons in the subterranean zone in response to flowing carbon dioxide in the first state into the subterranean zone.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Inventors: Fawaz M. Al-Otaibi, Sunil Kokal
  • Patent number: 9309754
    Abstract: Embodiments of the invention generally relate to the field of oil recovery from reservoirs. More specifically, embodiments of the invention relate to enhancing the recovery of oil using carbon dioxide flooding processes by providing a process to improve oil recovery from a reservoir by injecting through a well into a reservoir a heavy oil slug composition that includes heavy oil that is mixed carbon dioxide. Following injecting the heavy oil slug composition, a carbon dioxide slug that includes carbon dioxide is injected through the well into the reservoir.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: April 12, 2016
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Fawaz Al-Otaibi, Sunil Kokal
  • Publication number: 20140251618
    Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to enhancing the recovery of oil using carbon dioxide flooding processes. In general, the invention provides a process to improve oil recovery from a reservoir by injecting through a well into a reservoir a heavy oil slug composition that includes heavy oil that is mixed carbon dioxide. Following injecting the heavy oil slug composition, a carbon dioxide slug that includes carbon dioxide is injected through the well into the reservoir.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 11, 2014
    Applicant: Saudi Arabian Oil Company
    Inventors: Fawaz Al-Otaibi, Sunil Kokal
  • Publication number: 20140131046
    Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicant: SAUDI ARABIAN OIL COMPANY
    Inventors: Fawaz Al-Otaibi, YUN CHANG, SUNIL KOKAL, HOWARD SCHMIDT
  • Publication number: 20130248188
    Abstract: An aqueous viscoelastic solution for use in a modified water alternating gas (WAG) hydrocarbon production method includes a viscoelastic surfactant and a salt in an aqueous base solution. A modified water alternating gas (WAG) method for producing hydrocarbons from a hydrocarbon-bearing formation includes the step of introducing the aqueous viscoelastic solution into the hydrocarbon-bearing formation. The method also includes the step of introducing a service gas into the hydrocarbon-bearing formation. The aqueous viscoelastic solution and the service gas are introduced separately and sequentially into the hydrocarbon-bearing formation. The hydrocarbon-bearing formation produces a production fluid in response to each introduction. The production fluid contains both water and hydrocarbons.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: Saudi Arabian Oil Company
    Inventors: Fawaz M. Al-Otaibi, Sunil Kokal, Mohammed H. Al-Khaldi, Mohammed G. Faifi