Patents by Inventor Gayani Pinnawala Arachchilage

Gayani Pinnawala Arachchilage 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).

  • Compositions for use in oil and gas operations
    Patent number: 11884879
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: January 30, 2024
    Assignees: CHEVRON U.S.A. INC., CHEVRON ORONITE COMPANY LLC
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • Methods for use in oil and gas operations
    Patent number: 11739254
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: August 29, 2023
    Assignees: CHEVRON U.S.A. INC., CHEVRON ORONITE COMPANY LLC
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • COMPOSITIONS FOR USE IN OIL AND GAS OPERATIONS
    Publication number: 20220372363
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Application
    Filed: February 14, 2022
    Publication date: November 24, 2022
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • METHODS FOR USE IN OIL AND GAS OPERATIONS
    Publication number: 20220098470
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Application
    Filed: May 17, 2021
    Publication date: March 31, 2022
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • Compositions for use in oil and gas operations
    Patent number: 11248160
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: February 15, 2022
    Assignees: Chevron U.S.A. Inc., Chevron Oronite Company LLC
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • Methods for preparing an aqueous surfactant-polymer solution
    Patent number: 11008502
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: May 18, 2021
    Assignees: Chevron U.S.A. Inc., Chevron Oronite Company LLC
    Inventors: Dennis A. Alexis, Gayani Pinnawala Arachchilage, Varadarajan Dwarakanath, Do Hoon Kim, Taimur Malik, Gregory A. Winslow, Aaron Wilhelm
  • INJECTION FLUIDS COMPRISING AN ANIONIC SURFACTANT FOR TREATING UNCONVENTIONAL FORMATIONS
    Publication number: 20210095184
    Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.
    Type: Application
    Filed: July 31, 2018
    Publication date: April 1, 2021
    Inventors: Dustin L. WALKER, Gayani PINNAWALA ARACHCHILAGE, Nabi NIZAMIDIN, Varadarajan DWARAKANATH, Guo-Qing TANG, Dustin J. LOWRY, Tetsuo Art INOUYE, Taimur MALIK
  • INJECTION FLUIDS COMPRISING A NON-IONIC SURFACTANT FOR TREATING UNCONVENTIONAL FORMATIONS
    Publication number: 20200317992
    Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises a non-ionic surfactant and optionally one or more secondary surfactants.
    Type: Application
    Filed: July 31, 2018
    Publication date: October 8, 2020
    Inventors: Dustin L. WALKER, Gayani PINNAWALA ARACHCHILAGE, Nabi NIZAMIDIN, Varadarajan DWARAKANATH, Guo-Qing TANG, Dustin J. LOWRY, Tetsuo Art INOUYE, Taimur MALIK
  • INJECTION FLUIDS FOR STIMULATING FRACTURED FORMATIONS
    Publication number: 20200317993
    Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises a surfactant and optionally one or more secondary surfactants. Also provided are methods of using the stabilized injection fluids in stimulation operations.
    Type: Application
    Filed: July 31, 2018
    Publication date: October 8, 2020
    Inventors: Dustin L. WALKER, Gayani PINNAWALA ARACHCHILAGE, Nabi NIZAMIDIN, Varadarajan DWARAKANATH, Guo-Qing TANG, Dustin J. LOWRY, Tetsuo Art INOUYE, Taimur MALIK
  • Surfactant compositions
    Patent number: 10501677
    Abstract: Provided herein are novel surfactant compositions and methods having application in a variety of fields including enhanced oil recovery, the cleaning industry as well as groundwater remediation. The surfactant compositions are based on lignin bio-oil with a phenol hydroxyl group as the main functional group. The compositions include carboxylic surfactant s and mixed hydrophilic and hydrophobic surfactant structures, which can be used for the recovery of crude oil compositions from challenging reservoirs.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 10, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Douglas G. Naae, Gregory A. Winslow, Varadarajan Dwarakanath, Taimur Malik, Gayani Pinnawala Arachchilage
  • Methods for Use in Oil and Gas Operations
    Publication number: 20190233716
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 1, 2019
    Inventors: Dennis A. ALEXIS, Gayani PINNAWALA ARACHCHILAGE, Varadarajan DWARAKANATH, Do Hoon KIM, Taimur MALIK, Gregory A. WINSLOW, Aaron WILHELM
  • COMPOSITIONS FOR USE IN OIL AND GAS OPERATIONS
    Publication number: 20190233715
    Abstract: Disclosed are compositions and methods for use in oil and gas operations.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 1, 2019
    Inventors: Dennis A. ALEXIS, Gayani PINNAWALA ARACHCHILAGE, Varadarajan DWARAKANATH, Do Hoon KIM, Taimur MALIK, Gregory A. WINSLOW, Aaron WILHELM
  • SURFACTANT COMPOSITIONS
    Publication number: 20180037794
    Abstract: Provided herein are novel surfactant compositions and methods having application in a variety of fields including enhanced oil recovery, the cleaning industry as well as groundwater remediation. The surfactant compositions are based on lignin bio-oil with a phenol hydroxyl group as the main functional group. The compositions include carboxylic surfactant s and mixed hydrophilic and hydrophobic surfactant structures, which can be used for the recovery of crude oil compositions from challenging reservoirs.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 8, 2018
    Inventors: Douglas G. Naae, Gregory A. Winslow, Varadarajan Dwarakanath, Taimur Malik, Gayani Pinnawala Arachchilage