Patents by Inventor Craig Allan DAVIES

Craig Allan DAVIES 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).

  • Drilling fluid comprising a lubricant
    Patent number: 11891562
    Abstract: The present invention provides a drilling fluid comprising a compound c) which comprises a dimer and/or trimer fatty acid residue and an alkyleneoxy chain comprising a first ethyleneoxy section, a second ethyleneoxy section and a propyleneoxy section located between said first and second ethyleneoxy sections, wherein the propyleneoxy section comprises from 1 to 20 propyleneoxy groups. Use of such a drilling fluid to lubricate a drill bit, and a method of drilling a well bore comprising circulating such a drilling fluid, are also provided.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 6, 2024
    Assignee: EQUUS UK TOPCO LTD
    Inventors: Craig Allan Davies, Kevin John Duncan, Helen Rachel Sarginson
  • DRILLING FLUID COMPRISING A LUBRICANT
    Publication number: 20210095178
    Abstract: The present invention provides a drilling fluid comprising a compound c) which comprises a dimer and/or trimer fatty acid residue and an alkyleneoxy chain comprising a first ethyleneoxy section, a second ethyleneoxy section and a propyleneoxy section located between said first and second ethyleneoxy sections, wherein the propyleneoxy section comprises from 1 to 20 propyleneoxy groups. Use of such a drilling fluid to lubricate a drill bit, and a method of drilling a well bore comprising circulating such a drilling fluid, are also provided.
    Type: Application
    Filed: March 5, 2019
    Publication date: April 1, 2021
    Inventors: Craig Allan DAVIES, Kevin John DUNCAN, Helen Rachel SARGINSON
  • Demulsifiers
    Patent number: 10125326
    Abstract: The present invention provides a demulsifier comprising a compound of the general formula (I), a demulsification formulation comprising the demulsifier, methods of making a demulsifier, a method of demulsifying an oil-in-water or a water-in oil emulsion and the use as a demulsifier of a compound comprising a dimer and/or trimer fatty residue and an alkyleneoxy chain comprising a first ethyleneoxy section, a second ethyleneoxy section, and a propyleneoxy section located between the first ethyleneoxy section and the second ethyleneoxy section, wherein the propyleneoxy section comprises from 1 to 20 propyleneoxy groups. The demulsifier may be for use in demulsifying an emulsion, for example crude oil.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 13, 2018
    Assignee: Croda International Plc
    Inventors: Sean Philip Nigel Rouse, James Alan Prodger, Craig Allan Davies
  • DEMULSIFIERS
    Publication number: 20170114287
    Abstract: The present invention provides a demulsifier comprising a compound of the general formula (I), a demulsification formulation comprising the demulsifier, methods of making a demulsifier, a method of demulsifying an oil-in-water or a water-in oil emulsion and the use as a demulsifier of a compound comprising a dimer and/or trimer fatty residue and an alkyleneoxy chain comprising a first ethyleneoxy section, a second ethyleneoxy section, and a propyleneoxy section located between the first ethyleneoxy section and the second ethyleneoxy section, wherein the propyleneoxy section comprises from 1 to 20 propyleneoxy groups. The demulsifier may be for use in demulsifying an emulsion, for example crude oil.
    Type: Application
    Filed: May 8, 2015
    Publication date: April 27, 2017
    Applicant: CRODA INTERNATIONAL PLC
    Inventors: Sean Philip NIGEL ROUSE, James Alan PRODGER, Craig Allan DAVIES