Patents by Inventor Nathan Darrell Davis

Nathan Darrell Davis 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).

  • Publication number: 20230064911
    Abstract: A method of inhibiting corrosion of a metal surface may include contacting the metal surface with a corrosion inhibitor compound that includes a substituted carboxamide.
    Type: Application
    Filed: May 27, 2020
    Publication date: March 2, 2023
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Liangwei Qu, Phillippe Prince, Nathan Darrell Davis
  • Patent number: 11542426
    Abstract: Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 3, 2023
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Qiang Lan, Nathan Darrell Davis
  • Publication number: 20220372362
    Abstract: A method is disclosed that includes introducing one or more dual function inhibitor compounds through an umbilical into a deepwater environment such that the one or more dual function inhibitor compounds are introduced into a fluid in the deepwater environment. The dual function inhibitor is a corrosion inhibitor and a hydrate inhibitor.
    Type: Application
    Filed: April 28, 2020
    Publication date: November 24, 2022
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Loan K. Vo, Philippe Prince, Nathan Darrell Davis
  • Patent number: 11414592
    Abstract: Methods and compositions for treating aqueous fluids that may be included in treatment fluids that are used for treating a subterranean formation. In some embodiments, the methods include: providing a treatment fluid including an aqueous fluid and a composition that includes an oxygen scavenger, a pH-adjusting agent, and a corrosion inhibitor, wherein the aqueous fluid is aerated; contacting a metal surface with the treatment fluid; and introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: August 16, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Nathan Darrell Davis, Philippe Prince
  • Publication number: 20210332287
    Abstract: A method is disclosed that includes introducing one or more dual function inhibitor compounds through an umbilical into a deepwater environment such that the one or more dual function inhibitor compounds are introduced into a fluid in the deepwater environment. The dual function inhibitor is a corrosion inhibitor and a hydrate inhibitor.
    Type: Application
    Filed: April 28, 2020
    Publication date: October 28, 2021
    Applicant: Multi-Chem Group, LLC
    Inventors: Loan K. Vo, Philippe Prince, Nathan Darrell Davis
  • Publication number: 20210079290
    Abstract: Methods for providing corrosion inhibition in conduits, containers, and wellbores penetrating subterranean formations are provided. In some embodiments, the methods comprise contacting a metal surface with a fluid comprising a corrosion inhibitor additive. In certain embodiments, the corrosion inhibitor additive comprises a compound comprising a hydrophobic cation moiety, one or more lipophilic tails, and a linking moiety.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 18, 2021
    Inventors: Qiang Lan, Nathan Darrell Davis
  • Patent number: 10913887
    Abstract: A method for inhibiting erosion (wear)-corrosion of downhole components in a secondary lift system, the method comprising: introducing a corrosion inhibitor and a lubricating agent into a wellbore; allowing the corrosion inhibitor and the lubricating agent to mix with a produced fluid to form a mixture; and recovering the mixture from the wellbore through a production tubing, wherein the corrosion inhibitor and/or the lubricating agent contact one or more of the downhole components of the secondary lift system. A system for inhibiting wear in secondary recovery comprising: a casing disposed in a producing wellbore; a production tubing extending into the casing; a downhole equipment disposed in the production tubing, wherein the downhole equipment comprises at least one equipment selected from the group consisting of a sucker rod, a plunger, and an electrical submersible pump; a treatment fluid for introduction into an annulus disposed between the casing and the production tubing.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 9, 2021
    Assignee: Multi-Chem Group, LLC
    Inventor: Nathan Darrell Davis
  • Publication number: 20200347286
    Abstract: Methods and compositions for treating aqueous fluids that may be included in treatment fluids that are used for treating a subterranean formation. In some embodiments, the methods include: providing a treatment fluid including an aqueous fluid and a composition that includes an oxygen scavenger, a pH-adjusting agent, and a corrosion inhibitor, wherein the aqueous fluid is aerated; contacting a metal surface with the treatment fluid; and introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation.
    Type: Application
    Filed: February 5, 2020
    Publication date: November 5, 2020
    Inventors: Nathan Darrell Davis, Philippe Prince
  • Patent number: 10526873
    Abstract: Compositions, treatment fluids, and methods for providing corrosion inhibition in subterranean operations, pipelines, and other related operations are provided. In one embodiment, the methods comprise providing a tagged corrosion-inhibiting additive that comprises an imidazoline-based compound bonded with a detectable moiety; and introducing the tagged corrosion-inhibiting additive into at least a portion of a subterranean formation or pipeline.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: January 7, 2020
    Assignee: Multi-Chem Group, LLC
    Inventors: Liangwei Qu, Nathan Darrell Davis
  • Publication number: 20190338180
    Abstract: A method for inhibiting erosion (wear)-corrosion of downhole components in a secondary lift system, the method comprising: introducing a corrosion inhibitor and a lubricating agent into a wellbore; allowing the corrosion inhibitor and the lubricating agent to mix with a produced fluid to form a mixture; and recovering the mixture from the wellbore through a production tubing, wherein the corrosion inhibitor and/or the lubricating agent contact one or more of the downhole components of the secondary lift system. A system for inhibiting wear in secondary recovery comprising: a casing disposed in a producing wellbore; a production tubing extending into the casing; a downhole equipment disposed in the production tubing, wherein the downhole equipment comprises at least one equipment selected from the group consisting of a sucker rod, a plunger, and an electrical submersible pump; a treatment fluid for introduction into an annulus disposed between the casing and the production tubing.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 7, 2019
    Applicant: Multi-Chem Group, LLC
    Inventor: Nathan Darrell Davis
  • Patent number: 10246628
    Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: April 2, 2019
    Assignee: MULTI-CHEM GROUP, LLC
    Inventors: Liangwei Qu, Nathan Darrell Davis, Funian Zhao, Qiang Fu
  • Publication number: 20170190952
    Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Inventors: Liangwei Qu, Nathan Darrell Davis, Funian Zhao, Qiang Fu
  • Publication number: 20170122078
    Abstract: Compositions, treatment fluids, and methods for providing corrosion inhibition in subterranean operations, pipelines, and other related operations are provided. In one embodiment, the methods comprise providing a tagged corrosion-inhibiting additive that comprises an imidazoline-based compound bonded with a detectable moiety; and introducing the tagged corrosion-inhibiting additive into at least a portion of a subterranean formation or pipeline.
    Type: Application
    Filed: May 16, 2014
    Publication date: May 4, 2017
    Inventors: Liangwei QU, Nathan Darrell DAVIS
  • Patent number: 9637679
    Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: May 2, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Liangwei Qu, Nathan Darrell Davis, Funian Zhao, Qiang Fu
  • Publication number: 20160215198
    Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.
    Type: Application
    Filed: May 5, 2014
    Publication date: July 28, 2016
    Inventors: Liangwei Qu, Nathan Darrell Davis, Funian Zhao, Qiang Fu