Patents by Inventor Shashidhar Rajagopalan

Shashidhar Rajagopalan 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: 11932812
    Abstract: A process for forming a particle carrier system includes supplying a particle carrier, the particle carrier having a surface and modifying the particle carrier surface to include a first ionic functional group. The process also includes chemically binding the first ionic functional group on the particle carrier surface to a first ionic molecule.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: March 19, 2024
    Assignee: ALCHEMY SCIENCES, INC.
    Inventors: Erick Acosta, Luchao Jin, Shashidhar Rajagopalan
  • Publication number: 20230407743
    Abstract: Embodiments of the present disclosure generally relate to systems, devices, and methods to model fluid flow in a porous medium. In an embodiment, a microfluidic device to model subterranean fluid flow is disclosed. The device includes a mold of solid material, the mold including a field of pores and throats formed in the mold for mimicking a porous rock formation, a peripheral channel formed in the mold for mimicking a fluid reservoir, and an interior channel formed in the mold for mimicking a well. The peripheral channel can trace a perimeter or circumference of the field of pores and throats and be in fluid communication with the pores and throats.
    Type: Application
    Filed: June 14, 2023
    Publication date: December 21, 2023
    Inventors: Aktham Ehab SHOUKRY, Mohammad PIRI, Shashidhar RAJAGOPALAN, Soheil SARAJI
  • Publication number: 20230065802
    Abstract: A process for forming a particle carrier system includes supplying a particle carrier, the particle carrier having a surface and modifying the particle carrier surface to include a first ionic functional group. The process also includes chemically binding the first ionic functional group on the particle carrier surface to a first ionic molecule.
    Type: Application
    Filed: August 12, 2022
    Publication date: March 2, 2023
    Inventors: Erick Acosta, Luchao Jin, Shashidhar Rajagopalan
  • Publication number: 20220397035
    Abstract: The method includes gathering field data of a formation, preparing samples of brine consistent with the composition of the formation brine and the injection brine, dead crude oil, and live crude oil, and characterizing the properties of crude oil samples. The method includes preparing samples of reservoir rock and characterizing the properties of the rock samples of the formation. The method includes measuring the contact angle of surfactant/formation brine/formation rock/formation crude oil samples at ambient and reservoir conditions and measuring the interfacial tension of the sample. The method includes characterizing the HLD properties of each surfactant. In addition, the method includes performing formulation targeting HLD=0 for a mixture of surfactants, performing laboratory evaluation of the HLD=0 formulation of the mixture of the surfactants to obtain values of oil recovery number, and testing the HLD=0 formulation of the mixture of the first and second selected surfactants in the formation.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 15, 2022
    Inventors: Luchao Jin, Shashidhar Rajagopalan, Erick Acosta
  • Patent number: 11486871
    Abstract: A method includes determining reservoir rock and fluid characteristics of a reservoir rock and, based on the reservoir rock and fluid characteristics of the reservoir rock, selecting a core. The method also includes selecting a first surfactant and selecting a second surfactant. In addition, the method includes performing a water block mitigation test using the selected core, the first surfactant and the second surfactant and performing a proppant phase trapping mitigation test using the selected core, the first surfactant and the second surfactant.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: November 1, 2022
    Assignee: ALCHEMY SCIENCES, INC.
    Inventors: Luchao Jin, Shashidhar Rajagopalan, James Russum
  • Publication number: 20210253942
    Abstract: A modified treatment fluid includes a first surfactant, wherein the first surfactant is nonionic, cationic, anionic, zwitterionic, or a combination thereof and a hydrocarbon altering additive (HA), that includes an organic salt, an inorganic salt, urea, a urea derivative, a carbamate, ammonia, an amine, a glycol, a glycol ether, an amide, an aldehyde, or a combination thereof. The modified treatment fluid further includes a treatment fluid.
    Type: Application
    Filed: February 12, 2021
    Publication date: August 19, 2021
    Inventors: James P. Russum, Erick Acosta, Shashidhar Rajagopalan
  • Publication number: 20210080442
    Abstract: A method includes determining reservoir rock and fluid characteristics of a reservoir rock and, based on the reservoir rock and fluid characteristics of the reservoir rock, selecting a core. The method also includes selecting a first surfactant and selecting a second surfactant. In addition, the method includes performing a water block mitigation test using the selected core, the first surfactant and the second surfactant and performing a proppant phase trapping mitigation test using the selected core, the first surfactant and the second surfactant.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Inventors: Luchao Jin, Shashidhar Rajagopalan, James Russum
  • Publication number: 20040006524
    Abstract: A capital investment that creates operational flexibility using a financial framework and adequately valuing the capital investment using financial mathematics. The capital investment may be an intelligent well completion connecting surface production and injection facilities with an oil and gas reservoir. The intelligent well completion may reduce potential well intervention costs, increase production rate, and increase ultimate recovery. The capital investment described by the financial framework may also affect one or more physical variables that, in turn, affect valuation of a real asset. One or more financial formulas may be applied to the physical variable to adequately value the capital investment.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Inventors: Larry Gregg Chorn, Arun Kumar Sharma, John Han, Shashidhar Rajagopalan, Amit Sharma