Patents by Inventor Paul M. Ashcraft

Paul M. Ashcraft 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: 11401793
    Abstract: System and methods of optimizing proppant placement for stimulation treatments are provided. Properties of a reservoir formation and a treatment fluid to be injected into the formation are determined for a multistage stimulation treatment to be performed along a wellbore drilled within the formation. A proppant transport model uses the properties to determine a proppant profile for a fractured area of the formation for each treatment stage along the wellbore. A proppant pack conductivity for each stage is determined based on a proppant conductivity model and the proppant profile for that stage. A rate of hydrocarbon production expected from the wellbore is estimated based on a well production model and the proppant pack conductivity. A distribution of proppant to be injected into the formation during the treatment is determined, based on the production rate and one or more constraints. The stimulation treatment is performed based on the determined proppant distribution.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 2, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Tirumani N. Swaminathan, Jianlei Sun, Paul M. Ashcraft, Cesar Edmundo Meza, Aaron Gene Russell
  • Publication number: 20210404306
    Abstract: System and methods of optimizing proppant placement for stimulation treatments are provided. Properties of a reservoir formation and a treatment fluid to be injected into the formation are determined for a multistage stimulation treatment to be performed along a wellbore drilled within the formation. A proppant transport model uses the properties to determine a proppant profile for a fractured area of the formation for each treatment stage along the wellbore. A proppant pack conductivity for each stage is determined based on a proppant conductivity model and the proppant profile for that stage. A rate of hydrocarbon production expected from the wellbore is estimated based on a well production model and the proppant pack conductivity. A distribution of proppant to be injected into the formation during the treatment is determined, based on the production rate and one or more constraints. The stimulation treatment is performed based on the determined proppant distribution.
    Type: Application
    Filed: November 29, 2018
    Publication date: December 30, 2021
    Inventors: Tirumani N. Swaminathan, Jianlei Sun, Paul M. Ashcraft, Cesar Edmundo Meza, Aaron Gene Russell
  • Publication number: 20210207465
    Abstract: Systems and methods for treating subterranean formations for treating subterranean formations using propellant fracturing and hydraulic fracturing to detonate and inject in sequential stages. A method comprises disposing a propellant fracturing tool downhole into a well bore; introducing a fracturing fluid into a work string coupled to the fluid conduit to pressurize and set an upper packer and a lower packer against the well bore; detonating sequentially a plurality of propellant band stages to produce one or more fractures; introducing sequentially a series of treatment fluids into a well bore penetrating at least a portion of a subterranean formation, wherein the sequential introduction of the series of treatment fluids occurs between the sequential detonation of the plurality of propellant band stages; and depositing at least a portion of the treatment fluids in at least a portion of the subterranean formation.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 8, 2021
    Inventors: Philip D. Nguyen, Ronald Glen Dusterhoft, Paul M. Ashcraft
  • Patent number: 11053786
    Abstract: Systems and methods for treating subterranean formations for treating subterranean formations using propellant fracturing and hydraulic fracturing to detonate and inject in sequential stages. A method comprises disposing a propellant fracturing tool downhole into a well bore; introducing a fracturing fluid into a work string coupled to the fluid conduit to pressurize and set an upper packer and a lower packer against the well bore; detonating sequentially a plurality of propellant band stages to produce one or more fractures; introducing sequentially a series of treatment fluids into a well bore penetrating at least a portion of a subterranean formation, wherein the sequential introduction of the series of treatment fluids occurs between the sequential detonation of the plurality of propellant band stages; and depositing at least a portion of the treatment fluids in at least a portion of the subterranean formation.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: July 6, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Ronald Glen Dusterhoft, Paul M. Ashcraft