Patents by Inventor Karthikeyan SELVAN

Karthikeyan SELVAN 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).

  • Methods for hydraulic fracturing
    Patent number: 11008842
    Abstract: A method for capturing hydrocarbons from a formation is provided. After a first hydraulic fracturing of a formation to produce a first conditioned formation, and while hydrocarbons are being produced from the first conditioned formation, a predetermined wellbore characteristic is monitored for. The predetermined wellbore characteristic is based on at least a pressure within the first conditioned formation. After detecting the predetermined wellbore characteristic, a second hydraulic fracturing of the formation is effected to produce a second conditioned formation.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: May 18, 2021
    Assignee: CNOOC PETROLEUM NORTH AMERICA ULC
    Inventors: Roberto Aguilera, Daniel Orozco, Karthikeyan Selvan, Faisal Qureshi
  • Method for recovering hydrocarbons from low permeability formations
    Patent number: 10760391
    Abstract: There is provided a method of producing hydrocarbon material. A first hydrocarbon material is produced from the formation, the first hydrocarbon material including a gaseous hydrocarbon material originally in place in the formation. At least a portion of the produced gaseous hydrocarbon material is injected into the formation to increase the formation pressure. A second hydrocarbon material is produced from the formation.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: September 1, 2020
    Assignee: CNOOC PETROLEUM NORTH AMERICA ULC
    Inventors: Roberto Aguilera, Alfonso Fragoso, Yi Wang, Guicheng Jing, Karthikeyan Selvan, Thomas Harding, Faisal Qureshi
  • METHOD FOR RECOVERING HYDROCARBONS FROM LOW PERMEABILITY FORMATIONS
    Publication number: 20180347328
    Abstract: There is provided a method of producing hydrocarbon material. A first hydrocarbon material is produced from the formation, the first hydrocarbon material including a gaseous hydrocarbon material originally in place in the formation. At least a portion of the produced gaseous hydrocarbon material is injected into the formation to increase the formation pressure. A second hydrocarbon material is produced from the formation.
    Type: Application
    Filed: November 16, 2016
    Publication date: December 6, 2018
    Inventors: Roberto AGUILERA, Alfonso FRAGOSO, Yi WANG, Guicheng JING, Karthikeyan SELVAN, Thomas HARDING, Faisal QURESHI
  • METHODS FOR HYDRAULIC FRACTURING
    Publication number: 20180313198
    Abstract: A method for capturing hydrocarbons from a formation is provided. After a first hydraulic fracturing of a formation to produce a first conditioned formation, and while hydrocarbons are being produced from the first conditioned formation, a predetermined wellbore characteristic is monitored for. The predetermined wellbore characteristic is based on at least a pressure within the first conditioned formation. After detecting the predetermined wellbore characteristic, a second hydraulic fracturing of the formation is effected to produce a second conditioned formation.
    Type: Application
    Filed: October 14, 2016
    Publication date: November 1, 2018
    Inventors: Roberto AGUILERA, Daniel OROZCO, Karthikeyan SELVAN, Faisal QURESHI