Patents Represented by Attorney Charles L. Bauer

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  • Process for the recovery of petroleum from subterranean formations
    Patent number: 4282930
    Abstract: An improved polymer flood process for the recovery of petroleum from a subterranean formation wherein a slug of a fresh water aqueous solution of a salt-insensitive polymer is injected into the formation prior to the undertaking of the polymer flood using a fresh water solution containing a partially hydrolyzed polyacrylamide.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: August 11, 1981
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Karl-Heinz Grodde, Hartwig Volz
  • Surfactant waterflood method for the recovery of oil
    Patent number: 4276933
    Abstract: An improved surfactant waterflood method for the recovery of oil from a subterranean reservoir utilizing an anionic surface-active agent wherein an aqueous postflush slug containing a nonionic solubilizer is employed to minimize retention of the surface-active agent in the reservoir matrix.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: July 7, 1981
    Assignee: Texaco Inc.
    Inventors: Mohan V. Kudchadker, George Kalfoglou, Lawrence E. Whittington
  • Demulsification of emulsions produced from surfactant recovery operations and recovery of surfactants therefrom
    Patent number: 4277352
    Abstract: Treatment of emulsions of oil and water produced from surfactant recovery operations whereby the produced emulsions containing surfactants are demulsified and the surfactants are recovered in the water phase.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: July 7, 1981
    Assignee: Texaco Inc.
    Inventors: Jean B. Allison, Mohan V. Kudchadker, Lawrence E. Whittington
  • Method of recovering petroleum and bitumen from subterranean reservoirs
    Patent number: 4252191
    Abstract: A method of recovering petroleum from an underground reservoir by employing an in-situ combustion at a pressure of at least 120 bar by the simultaneous injection of oxygen and water whereby the temperature is controlled in the range of 450.degree.-550.degree. C.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: February 24, 1981
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Gunter Pusch, Karl-Heinz Gaida
  • Method of in-situ recovery of viscous oils or bitumen utilizing a thermal recovery fluid and carbon dioxide
    Patent number: 4217956
    Abstract: A method for the in-situ recovery of viscous oils or bitumen from subterranean oil-bearing formations by the injection of steam or a mixture of steam and an oxygen-containing gas under operating conditions that utilize pressurization and drawdown cycles wherein carbon dioxide is injected at the start of the pressurization cycle.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: August 19, 1980
    Assignee: Texaco Canada Inc.
    Inventors: Michael J. Goss, Douglas I. Exall
  • Method for preconditioning a subterranean oil-bearing formation prior to in-situ combustion
    Patent number: 4194562
    Abstract: An in-situ combustion method for oil recovery from a subterranean oil-bearing formation traversed by a plurality of wells comprising a series of well pattern units wherein air permeability is established sequentially in the individual well pattern units pior to the initiation of in-situ combustion, thereby resulting in an increase in overall sweep efficiency.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: March 25, 1980
    Assignee: Texaco Inc.
    Inventors: Issam S. Bousaid, Donald L. Hoyt, Ralph J. Korstad
  • Surfactant oil recovery process usable in a formation having high salinity connate water
    Patent number: 4154301
    Abstract: In the recovery of oil from an oil-bearing formation having a high salinity connate water wherein an aqueous surfactant slug containing a commercially available petroleum sulfonate is injected followed by the injection of an aqueous drive agent, improved recovery is obtained, if a cosurfactant and a mono-unsaturated secondary alcohol are added to the surfactant slug.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: May 15, 1979
    Assignee: Texaco Inc.
    Inventors: Joseph T. Carlin, John A. Wells, Timothy N. Tyler
  • Enhanced recovery of oil from a dipping subterranean oil-bearing reservoir using light hydrocarbon and carbon dioxide
    Patent number: 4136738
    Abstract: Recovery of oil from a dipping subterranean oil-bearing reservoir is effected by the injection of a first slug of a light hydrocarbon at a high rate to insure mixing with the reservoir oil adjacent the injection well followed by the injection of a second slug of carbon dioxide at a low rate to form a conditionally miscible transition zone with the altered reservoir oil and thereafter by the injection of a drive agent.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: January 30, 1979
    Assignee: Texaco, Inc.
    Inventors: Stewart Haynes, Jr., Frank H. Lim, Robert B. Alston
  • Recovery of petroleum from viscous petroleum-containing formations including tar sands
    Patent number: 4133382
    Abstract: A method for the in-situ recovery of low API gravity oils or bitumen from subterranean hydrocarbon-bearing formations wherein the recovery is optimized by the injection of a mixture of an oxygen-containing gas and steam until the recovery efficiency declines, followed by the injection of a mixture of light hydrocarbon and steam, under operating conditions that may utilize pressurization and drawdown cycles.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: January 9, 1979
    Assignee: Texaco Canada Inc.
    Inventors: Phillip J. Cram, Roman A. Pachovsky
  • Low-temperature oxidation method for the recovery of heavy oils and bitumen
    Patent number: 4114690
    Abstract: An improved method for the recovery of heavy oils and bitumen from subterranean formations by the injection thereinto of a mixture of an oxygen-containing gas and steam in which the ratio of free oxygen in the gas to steam is in the range of 0.03 to 0.13 MSCF/bbl.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: September 19, 1978
    Assignee: Texaco Exploration Canada Ltd.
    Inventors: Phillip J. Cram, David A. Redford
  • Method of covering the bottom surface in a gas cavern
    Patent number: 4109471
    Abstract: Method for depositing a layer or carpet of bitumen in an underground cavern which has a water sump layer in the bottom, and which is used for storing gaseous hydrocarbons, whereby the deposited bitumen carpet minimizes the vaporization of the cavern water into the stored gaseous hydrocarbon.
    Type: Grant
    Filed: September 2, 1976
    Date of Patent: August 29, 1978
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Franz X. Sebald, Hans-Dieter Hagemann
  • Method of oil recovery employing enriched gas drive with control of evolved gas
    Patent number: 4086961
    Abstract: A method for the recovery of hydrocarbons from a subterranean hydrocarbon-bearing reservoir by an enriched gas drive wherein lean gas, evolved from the miscible transition zone, is produced ahead of the miscible transition zone and reinjected behind the solvent injection point whereby excessive gas production is utilized and a drive agent miscible with the solvent is provided to displace the reservoir fluids through the reservoir to a production well from which they are produced.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: May 2, 1978
    Assignees: Texaco Inc., Texaco Exploration Canada Ltd.
    Inventors: William B. Braden, Jr., George H. Agnew
  • Method of initiating underground in-situ combustion
    Patent number: 4057107
    Abstract: A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid, an organic peroxide and a heavy metal salt.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: November 8, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Gunter Pusch, Rudolf Gedenk
  • Thermal recovery of hydrocarbons from tar sands
    Patent number: 4046195
    Abstract: A method for the recovery of low API gravity viscous oils or bitumen from a subterranean formation by the injection of steam followed by a mixture of an oxygen-containing gas and steam until an optimum amount of gas has been injected, followed by injection of steam alone.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: September 6, 1977
    Assignee: Texaco Exploration Canada Ltd.
    Inventors: Phillip J. Cram, David A. Redford
  • Method for initiating an in-situ recovery process by the introduction of oxygen
    Patent number: 4042026
    Abstract: A method for starting a process to recover energy raw materials from a subterranean formation whereby igniters are injected into the upper region of the formation and inert gas is injected into the lower region of the formation, and thereafter an oxygen-containing gas is injected at a predetermined oxygen concentration and rate to initiate combustion, followed by increasing the oxygen concentration and/or rate of the injected gas to a maximum value.
    Type: Grant
    Filed: February 5, 1976
    Date of Patent: August 16, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Gunter Pusch, Heinz Jurgen Klatt, Walter Frohlich
  • Method of in situ recovery of viscous oils and bitumens
    Patent number: 4026358
    Abstract: A method for recovering low-gravity viscous oils and bitumen hydrocarbons from a subterranean hydrocarbon-bearing formation by injecting thereinto a hydrocarbon solvent saturated with a gas, and thereafter establishing a thermal sink in the formation, followed by a soak period, and production of the hydrocarbons therefrom.
    Type: Grant
    Filed: June 23, 1976
    Date of Patent: May 31, 1977
    Assignee: Texaco Inc.
    Inventor: Joseph C. Allen
  • Recovery of oil by a vertical miscible flood
    Patent number: 4022278
    Abstract: A vertical miscible recovery process for the recovery of oil from an oil-bearing reservoir wherein a miscible slug or blanket of solvent is established at the crest of the oil column or at the gas-oil interface and thereafter is displaced downward by the injection of a drive agent such as natural gas or methane wherein the reservoir is produced simultaneously from near the bottom of the oil column and also near the top of the oil column thereby increasing the spreading rate of the solvent slug.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: May 10, 1977
    Assignee: Texaco Inc.
    Inventor: Joseph C. Allen
  • Ignition mixture for initiating underground in-situ combustion
    Patent number: 4014721
    Abstract: A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid, an organic peroxide and a heavy metal salt.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: March 29, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Gunter Pusch, Rudolf Gedenk
  • Thermal recovery of hydrocarbon from tar sands
    Patent number: 4006778
    Abstract: A method for the recovery of low API gravity viscous oils or bitumens from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam at a temperature corresponding to the temperature of saturated steam at the pressure of the formation.
    Type: Grant
    Filed: June 21, 1974
    Date of Patent: February 8, 1977
    Assignee: Texaco Exploration Canada Ltd.
    Inventors: David A. Redford, Stephen M. Creighton
  • Thermal recovery of hydrocarbons from tar sands
    Patent number: 3993132
    Abstract: A method for the recovery of low API gravity viscous oils or bitumen from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam having an optimum gas/steam ratio that is decreased as the cumulative amount of steam is increased.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: November 23, 1976
    Assignee: Texaco Exploration Canada Ltd.
    Inventors: Phillip J. Cram, David A. Redford