Patents Assigned to Variperm Energy Services Inc.
  • Nozzle for water choking
    Patent number: 11746625
    Abstract: A nozzle for controlling the flow of a water and/or gas component of a fluid produced from a hydrocarbon-bearing reservoir, the fluid comprising oil and water and/or gas, the nozzle comprising a fluid passage extending between an inlet and an outlet, wherein the fluid passage comprises an uneven surface for imparting turbulence to the water and/or gas component of the fluid.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: September 5, 2023
    Assignee: Variperm Energy Services Inc.
    Inventor: Da Zhu
  • Flow control nozzle and system
    Patent number: 11536115
    Abstract: A flow control system includes a nozzle for controlling the flow of fluids into production tubing from a hydrocarbon containing reservoir. The nozzle comprises a passage extending between an inlet and an outlet, wherein the passage comprises converging and diverging sections separated by a corner. The nozzle serves to effectively choke the flow of steam and thereby allows preferential production of hydrocarbons.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: December 27, 2022
    Assignee: Variperm Energy Services Inc.
    Inventor: Da Zhu
  • Nozzle for steam injection and steam choking
    Patent number: 11525337
    Abstract: A nozzle for controlling the flow of fluids into and/or out of a hydrocarbon-bearing reservoir comprises a fluid passage extending between first and second openings. The passage comprises a flow adjusting region for increasing the velocity of fluids injected into the reservoir and for choking steam produced from the reservoir.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: December 13, 2022
    Assignee: Variperm Energy Services Inc.
    Inventor: Da Zhu
  • Production nozzle for solvent-assisted recovery
    Patent number: 11525336
    Abstract: A nozzle for mitigating against solvent flashing in a solvent-assisted hydrocarbon extraction process comprises a fluid passage extending between an inlet and an outlet, wherein the fluid passage comprises a converging region, a throat, and a diverging region, and wherein at least the converging region is provided with a gradually reducing internal diameter. Preferably, the angle of convergence of the converging region is equal to or less than about 5 degrees.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 13, 2022
    Assignee: VARIPERM ENERGY SERVICES INC.
    Inventor: Da Zhu
  • Nozzle for steam injection
    Patent number: 11519250
    Abstract: A steam injection nozzle for controlling the flowrate of steam injected into a hydrocarbon containing reservoir comprises a passage extending between an inlet and an outlet, wherein the passage comprises a first, pressure dissipating section and a second, pressure recovery section.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 6, 2022
    Assignee: Variperm Energy Services Inc.
    Inventor: Da Zhu