Patents by Inventor John Thomas Pursley

John Thomas Pursley 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).

  • Process for well cleaning
    Publication number: 20080287324
    Abstract: Disclosed is a method for treating an oil or gas well having a wellbore that includes the steps of forming a solvent-surfactant blend by combining a solvent and a surfactant, adding a diluent to the solvent-surfactant blend to form an emulsified solvent-surfactant blend; combining the emulsified solvent-surfactant blend with a water-based carrier fluid to form a well treatment microemulsion, and injecting the well treatment microemulsion into the oil or gas well. In a preferred embodiment, the step of forming a solvent-surfactant blend includes combining a surfactant with a solvent selected from the group consisting of terpenes and alkyl or aryl esters of short chain alcohols.
    Type: Application
    Filed: May 30, 2008
    Publication date: November 20, 2008
    Applicant: CESI Chemical, Inc., A Flotek Company
    Inventors: John Thomas Pursley, David L. Holcomb, Glenn S. Penny