Patents by Inventor William Scott Woolfolk

William Scott Woolfolk 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: 11339323
    Abstract: Lightweight proppant particles are disclosed. The lightweight proppant particle can include a proppant particle having an apparent specific gravity of at least about 1.5 g/cc, a coating of a hydrophobic material formed on an outer surface of the proppant particle, and a coating of an amphiphilic material formed on an outer surface of the coating of the hydrophobic material.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: May 24, 2022
    Assignee: CARBO CERAMICS INC.
    Inventors: Todd Roper, Thu Lieng, Olatunji Orekha, William Scott Woolfolk
  • Publication number: 20190338183
    Abstract: Lightweight proppant particles are disclosed. The lightweight proppant particle can include a proppant particle having an apparent specific gravity of at least about 1.5 g/cc, a coating of a hydrophobic material formed on an outer surface of the proppant particle, and a coating of an amphiphilic material formed on an outer surface of the coating of the hydrophobic material.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 7, 2019
    Inventors: Todd ROPER, Thu Lieng, Olatunji Orekha, William Scott Woolfolk
  • Patent number: 10294413
    Abstract: Lightweight proppant particles are disclosed. The lightweight proppant particle can include a proppant particle having an apparent specific gravity of at least about 1.5 g/cc, a coating of a hydrophobic material formed on an outer surface of the proppant particle, and a coating of an amphiphilic material formed on an outer surface of the coating of the hydrophobic material.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 21, 2019
    Assignee: CARBO Ceramics Inc.
    Inventors: Todd Roper, Thu Lieng, Olatunji Orekha, William Scott Woolfolk
  • Publication number: 20180230370
    Abstract: According to several exemplary embodiments of the present disclosure, a proppant composition is provided that includes a plurality of unconsolidated particulates having a resin coating on the surface of the particulates, such that chemically active amine sites remain on the surface of the proppant particulates. The proppant composition can remain unconsolidated under storage conditions, inside a wellbore, and inside a subterranean fracture in the absence of an activator. For example, the proppant composition can remain unconsolidated in a gravel pack region or frac pack region in a wellbore in the absence of an activator. According to several exemplary embodiments of the present invention, the proppant composition remains unconsolidated under storage conditions of temperatures of up to 150° F., up to 100° F., or up to 50° F. and atmospheric pressure from about one month to about eighteen months.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 16, 2018
    Inventors: Daryl JOHNSON, Todd ROPER, Thu LIENG, William Scott WOOLFOLK
  • Publication number: 20170145301
    Abstract: Lightweight proppant particles are disclosed. The lightweight proppant particle can include a proppant particle having an apparent specific gravity of at least about 1.5 g/cc, a coating of a hydrophobic material formed on an outer surface of the proppant particle, and a coating of an amphiphilic material formed on an outer surface of the coating of the hydrophobic material.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 25, 2017
    Inventors: Todd Roper, Thu Lieng, Olatunji Orekha, William Scott Woolfolk
  • Patent number: 7119039
    Abstract: Round and spherical titanium dioxide scouring media and a method for producing the media are disclosed. The scouring media is effective in removing titanium dioxide buildup on the walls of a titanium dioxide reaction vessel. The method consists of forming green titanium dioxide pellets in a high intensity mixer by mixing commercially available titanium dioxide dust, water and a surfactant. The high intensity mixer produces substantially round, and spherical green pellets which are subsequently sized and sintered in a kiln to form round and spherical titanium dioxide sintered pellets that are suitable as a scouring media. The high intensity mixer allows the operator to closely control the size and shape of the pellets during the forming process to produce substantially round and spherical green pellets. Because the sintered titanium dioxide pellets are substantially round and spherical in shape, they are much less abrasive to the walls of the reaction vessel.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: October 10, 2006
    Assignee: Carbo Ceramics Inc.
    Inventors: Claude A. Krause, William Scott Woolfolk
  • Publication number: 20040239012
    Abstract: Round and spherical titanium dioxide scouring media and a method for producing the media are disclosed. The scouring media is effective in removing titanium dioxide buildup on the walls of a titanium dioxide reaction vessel. The method consists of forming green titanium dioxide pellets in a high intensity mixer by mixing commercially available titanium dioxide dust, water and a surfactant. The high intensity mixer produces substantially round, and spherical green pellets which are subsequently sized and sintered in a kiln to form round and spherical titanium dioxide sintered pellets that are suitable as a scouring media. The high intensity mixer allows the operator to closely control the size and shape of the pellets during the forming process to produce substantially round and spherical green pellets. Because the sintered titanium dioxide pellets are substantially round and spherical in shape, they are much less abrasive to the walls of the reaction vessel.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 2, 2004
    Applicant: CARBO Ceramics Inc.
    Inventors: Claude A. Krause, William Scott Woolfolk