Patents by Inventor Ronald F. Scheuerman

Ronald F. Scheuerman 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 acidizing hot siliceous material
    Patent number: 4548732
    Abstract: The dissolving of siliceous material in an environment containing corrodable metal and having a temperature exceeding about 300.degree. F. is improved by using an aqueous solution containing an amount of ammonium fluoride equivalent to that in a 2-3 molar solution of hydrogen fluoride and enough weak acid and weak acid salt to provide a pH of near to but less than 7.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: October 22, 1985
    Assignee: Shell Oil Company
    Inventors: Ronald F. Scheuerman, Seth A. Silverman
  • Chemical process for backsurging fluid through well casing perforations
    Patent number: 4289633
    Abstract: A backsurge of fluid through perforations in a well casing is chemically induced by injecting into the surrounding reservoir a solution which contains (a) nitrogen gas-generating reactants, (b) a reaction-retarding alkaline buffer, and (c) a pH-reducing reactant that is capable of subsequently overriding the buffer, so that a rapid production of gas and heat causes a backsurging of fluid into the wellbore.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: September 15, 1981
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman, David C. Berkshire
  • Temporarily plugging a subterranean reservoir with a self-foaming aqueous solution
    Patent number: 4232741
    Abstract: Portions of a subterranean reservoir are temporarily plugged by injecting an aqueous liquid solution which contains nitrogen gas-generating reactants, a foaming surfactant and a pH controlling system arranged so that the solution remains relatively unreactive within the well but forms a relatively immobile foam within the pores or other openings within the reservoir formation.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: November 11, 1980
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman, David C. Berkshire, Joseph Reisberg, James H. Lybarger
  • Chemical process for backsurging fluid through well casing perforations
    Patent number: 4219083
    Abstract: A backsurge of fluid through perforations in a well casing is chemically induced by injecting into the surrounding reservoir a solution which contains (a) nitrogen gas-generating reactants, (b) a reaction-retarding alkaline buffer, and (c) a pH-reducing reactant that is capable of subsequently overriding the buffer, so that a rapid production of gas and heat causes a backsurging of fluid into the wellbore.
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: August 26, 1980
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman, David C. Berkshire
  • Method of starting gas production by injecting nitrogen-generating liquid
    Patent number: 4178993
    Abstract: Production is initiated from a gas well which is kept from producing by the hydrostatic pressure of the liquid it contains, by injecting an aqueous liquid that contains reactants which form nitrogen gas within the wall or reservoir and displaces enough liquid out of the well to lower the hydrostatic pressure to less than the fluid pressure in the adjacent portion of the reservoir and cause fluid to flow from the reservoir to the well.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: December 18, 1979
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman
  • Acidizing carbonate reservoirs with chlorocarboxylic acid salt solutions
    Patent number: 4122896
    Abstract: A carbonate reservoir is acidized slowly by injecting an aqueous solution of a chlorocarboxylic acid salt so that the rate of the acidization is limited to the rate at which an acid is formed by the hydrolyzing of the chlorocarboxylate ions.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: October 31, 1978
    Assignee: Shell Oil Company
    Inventors: Ronald F. Scheuerman, Edwin A. Richardson, Charles C. Templeton
  • Increasing the clay dissolving capability of a buffer-regulated mud acid
    Patent number: 4090563
    Abstract: The clay dissolving capability of an aqueous mud acid solution of weak acid, weak acid salt and fluoride salt (of the type described in the E. A. Richardson U.S. Pat. No. 3,889,753) can be increased by including in the solution a partial salt of an aminopolyacetic acid chelating or complex-forming agent.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: May 23, 1978
    Assignee: Shell Oil Company
    Inventors: James H. Lybarger, Edwin A. Richardson, Ronald F. Scheuerman, Charles C. Templeton
  • Increasing the clay-dissolving capability of a relatively high pH self-generating mud acid
    Patent number: 4089787
    Abstract: The clay-dissolving capability of a self-generating mud acid comprising an aqueous solution or dispersion of a fluoride salt, an ester of a 1-5 carbon atom aliphatic alcohol and a 2-5 carbon atom fatty acid suitable for use at temperatures exceeding about 180.degree. F is improved by adding an effective amount of an aminopolyacetic acid salt chelating or complexing agent.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: May 16, 1978
    Assignee: Shell Oil Company
    Inventors: James H. Lybarger, Charles C. Templeton, Edwin A. Richardson, Ronald F. Scheuerman
  • Economically dissolving barium sulfate scale with a chelating agent
    Patent number: 4030548
    Abstract: A barium sulfate scale or solid can be dissolved economically by flowing a stream of relatively dilute aqueous solution of aminopolyacetic acid salt chelating agent into contact with and along the surfaces of the scale while correlating the composition and flow rate of the solution so that each portion of solution contains an amount of chelant effective for dissolving barium sulfate and the upstream portions of the scale are contacted by portions of the solution which are unsaturated regarding the barium-chelant complex.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: June 21, 1977
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman
  • Method of starting gas production by injecting nitrogen-generating liquid
    Patent number: RE30935
    Abstract: Production is initiated from a gas well which is kept from producing by the hydrostatic pressure of the liquid it contains, by injecting an aqueous liquid that contains reactants which form nitrogen gas within the wall or reservoir and displaces enough liquid out of the well to lower the hydrostatic pressure to less than the fluid pressure in the adjacent portion of the reservoir and cause fluid to flow from the reservoir to the well.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: May 18, 1982
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Ronald F. Scheuerman