Patents Represented by Attorney Thomas H. Whaley
  • Patent number: 4219638
    Abstract: An epoxy resin having superior resistance to thermal shock comprises a vicinal polyepoxide, a curing amount of a certain bicyclic anhydride and an effective amount of a certain bicyclic anhydride and an additive comprising a polyoxyalkylenepolyamine-maleic anhydride condensation product having (thio)carbamoyl, carbamoyl or thioformyl or formyl end groups.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: August 26, 1980
    Assignee: Texaco Development Corporation
    Inventors: Harold G. Waddill, Heinz Schulze
  • Patent number: 4219429
    Abstract: The production of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acid-soluble components, such as one composed at least in part of dolomite or limestone, is stimulated by injecting into the formation usually via casing and cement pack perforations a composition comprising an aqueous solution of a mineral acid having dissolved therein a small amount of a vinylpyrrolidone terpolymer. The increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery. Optionally, the injected composition may be saturated with natural gas at the injection pressure.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: August 26, 1980
    Assignee: Texaco Inc.
    Inventors: Joseph C. Allen, Jack F. Tate
  • Patent number: 4217776
    Abstract: An apparatus for testing the minimum pullout strength of a ground anchor for an oil well derrick or other towers (as an antenna) guy line comprises an open ended cylinder connected to an anchor line, a piston positioned in the cylinder having a piston connecting rod extending out of the cylinder open end and connected to a winch, a compression spring around the connecting rod for damping outward movement of the piston from the cylinder, and a shear pin protruding through both the cylinder and the piston so that while applying an increasing load to the piston connecting rod, if the anchor does not move prior to breaking of the shear pin, a safe, satisfactory, and reliable anchor is indicated. A method for forming an anchor pullout test apparatus and a method for testing the pullout strength of an anchor are disclosed.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: August 19, 1980
    Assignee: Texaco Inc.
    Inventor: Richard H. McCall
  • Patent number: 4218766
    Abstract: Disclosed is a method of processing geological seismic reflection data to compensate for lateral variations in the attenuation effect which the weathered layer has on the reflected seismic energy waves as they approach an array of detectors at the surface. Absolute amplitudes of the waves are summed for each trace throughout a test window at the depth to be explored. The amplitudes are normalized by taking the ratio of each sum to the sum of the absolute amplitudes obtained throughout a standard window, in the corresponding trace. In a particular embodiment disclosed, the test window scans each trace in increments, and the absolute amplitude sum obtained at each position is normalized to the standard window in that trace. The ratios thus obtained, when plotted, reveal the positions of large-amplitude reflecting strata without weathered-layer distortion.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: August 19, 1980
    Assignee: Texaco Inc.
    Inventors: Alvin L. Parrack, Delbert R. Lunsford, Ronald A. Mikita
  • Patent number: 4217230
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a polymer comprising repeating units of vinyl sulfonic acid alkoxylated with 2,3-epoxy-1-propanol. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: August 12, 1980
    Assignee: Texaco Development Corporation
    Inventor: Walter D. Hunter
  • Patent number: 4216098
    Abstract: Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with a polymer comprising repeating units of vinyl sulfonic acid alkoxylated with ethylene oxide or a mixture of ethylene oxide and propylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: August 5, 1980
    Assignee: Texaco Development Corp.
    Inventor: Walter D. Hunter
  • Patent number: 4214999
    Abstract: Disclosed is a novel aqueous surfactant-containing fluid suitable for use in surfactant flooding oil recovery processes, and an oil recovery process using the fluid. The fluid contains petroleum sulfonates alone or in combination with solubilizing co-surfactants such as ethoxylated alkyl or alkylaryl compounds, alkyl or alkylaryl polyethoxy sulfates, or alkyl or alkylaryl polyethoxy sulfonates. The petroleum sulfonate is a mixture of petroleum sulfonates of varying equivalent weights ranging from 250 to 700, with an average equivalent weight between 325 and 425 and preferably between 350 and 400.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: July 29, 1980
    Assignee: Texaco Inc.
    Inventors: Joseph T. Carlin, James W. Ware, Melvin E. Mills, Jr., Timothy N. Tyler
  • Patent number: 4213500
    Abstract: An oil recovery process comprising injecting a fatty alcohol into the oil phase of the reservoir followed by the injection of a soap which effectively emulsifies the oil-fatty alcohol mixture followed by further water injection to displace and produce the emulsified oil.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: July 22, 1980
    Assignee: Texaco Inc.
    Inventors: Ricardo L. Cardenas, Joseph T. Carlin
  • Patent number: 4212353
    Abstract: Viscous petroleum including bitumen may be recovered from unconsolidated sand formations such as tar sand deposits by hydraulic mining. Hot water of steam and an amine are introduced into the subterranean deposit with sufficient velocity to dislodge bitumen and particles of sand therefrom. The process is a single wellbore operation using rotatable vertically moveable injection string with one or more jets near the bottom thereof, with separate return flow path to surface, the inlet to which may be on the bottom of the injection string. The injection string may be raised or lowered while rotating and jetting so the full vertical thickness of tar sand interval is contacted by aqueous mining fluid. Jet pump may be used to pump petroleum to surface. The aqueous hydraulic mining fluid comprises hot water or steam and an amine having the following formula:R.sub.1 R.sub.2 NR.sub.3wherein R.sub.1 and R.sub.2 are each hydrogen or a C.sub.1 to C.sub.6 and preferably a C.sub.2 to C.sub.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: July 15, 1980
    Assignee: Texaco Inc.
    Inventor: Wilbur L. Hall
  • Patent number: 4210205
    Abstract: Significant improvement in the recovery of hydrocarbons from a subterranean hydrocarbon-bearing calcareous formation is accomplished by injecting into the formation via an injection well drilled into a formation communicating with an adjacent producing well and containing acid-soluble components which may or may not have water-sensitive clays and shales included therein, a composition comprising an aqueous solution of a mineral acid having dissolved therein a small amount of a vinylpyrrolidone terpolymer solution whereupon the acid solution reacts with the acid-soluble components of the formation creating passageways or enlarging existing passageways thus facilitating the flow of fluids therein and thereby increasing the recovery of hydrocarbons from the formation through the adjacent producing well. Optionally, the injected composition may be saturated with natural gas at the injection pressure.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: July 1, 1980
    Assignee: Texaco Inc.
    Inventors: Joseph C. Allen, Jack F. Tate
  • Patent number: 4209695
    Abstract: Fluid in a pipeline or container at a refinery or at any of various petroleum producing operations is bombarded with neutrons, and high energy gamma rays resulting from capture of thermal neutrons are detected. The spectra of the detected gamma rays are then analyzed to determine the concentration of the element chlorine, which gives an indication of the presence and concentration of salt water in the fluid. The concentration of sulfur and the percentage gas in the fluid may be determined simultaneously with the concentration of chlorine.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: June 24, 1980
    Assignee: Texaco Inc.
    Inventors: Dan M. Arnold, Harold E. Peelman, Obie M. Langford, Hans J. Paap, Irwin R. Supernaw
  • Patent number: 4208280
    Abstract: Covers a method of separating a nonionic surfactant from an anionic surfactant by use of cyclohexanone.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: June 17, 1980
    Assignee: Texaco Development Corp.
    Inventor: Carter G. Naylor
  • Patent number: 4207946
    Abstract: A process for recovering hydrocarbons from a hydrocarbon-bearing formation penetrated by an injection well and a production well which comprises injecting an aqueous solution of a vinylpyrrolidone polymer into the formation to condition the reservoir, in a first step injecting an aqueous surfactant solution into the formation and recovering hydrocarbons via the said production well. The pretreatment of the formation with the vinylpyrrolidone polymer reduces the consumption or loss of surfactant and thus improves the efficiency of the process. Optionally, after the injection of the aqueous surfactant solution an aqueous drive fluid is injected into the formation.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: June 17, 1980
    Assignee: Texaco Inc.
    Inventors: Warren C. Haltmar, Elsa S. Lacey
  • Patent number: 4206128
    Abstract: An improved method is disclosed for the vapor phase epoxidation of ethylene to ethylene oxide which includes intimately contacting an ethylene-containing feed stream with an epoxidizing amount of molecular oxygen epoxidizing agent in the presence of a catalytically effective amount of a novel supported, activated silver catalyst and, preferably in the presence of an effective amount of at least one inhibitor which retards combustion of ethylene to carbon dioxide at a temperature of from about 200.degree. C. to about 300.degree. C.The novel silver catalyst is best described in terms of its method of preparation. The catalyst is prepared by impregnating certain inorganic porous substrates with a specific silver carboxylate/amine complex impregnating solution. The impregnated support is then heated in order to evaporate volatiles, decompose the complex and activate the catalyst.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: June 3, 1980
    Assignee: Texaco Development Corporation
    Inventor: Stanley B. Cavitt
  • Patent number: 4206058
    Abstract: The production of hydrocarbons from a subterranean hydrocarbon-bearing formation containing acid-soluble components, such as one composed at least in part of dolomite or limestone, is stimulated by injecting into the formation a composition comprising an aqueous solution of a mineral acid having dissolved therein an oxyalkylated acrylamido alkanesulfonic acid polymer. The increase in the permeability and porosity of the formation achieved utilizing the method of invention results in a substantial improvement in hydrocarbon recovery.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: June 3, 1980
    Assignee: Texaco Inc.
    Inventor: Jack F. Tate
  • Patent number: 4206038
    Abstract: A fluidized catalytic cracking process wherein regenerated catalyst is stripped with an acid gas for displacing nitrogen, carbon monoxide, and other combustion gases from said regenerated catalysts, and wherein a hydrogen product of high purity and substantially free of nitrogen, carbon monoxide and other non-condensible gases is recovered from cracked vapors from said cracking process.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: June 3, 1980
    Assignee: Texaco Inc.
    Inventors: Randlow Smith, Henry B. Jones
  • Patent number: 4205725
    Abstract: A method for assembling an ignition system for in situ combustion operation to recover petroleum from a well in a subterranean reservoir, and an ignition system for an elongated combustion chamber suspended from a hollow electrical cable and which cable supplies both electrical means and fuel gas to the chamber. Air inlet ducts in the walls of the air inlet cylinder receive air from the annular space between the hollow cable and the wellbore tubing. An electrical ignitor is temporarily energized automatically or responsive to a thermocouple detecting no burning in the combustion chamber to ignite the fuel-air mixture in the combustion chamber. The ignitor is responsive to the thermocouple detecting burning in the combustion chamber for extinguishing the ignitor. The thermocouple is thus responsive to a flameout for re-energizing the ignitor either manually or automatically such that burner operation is interrupted only momentarily.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: June 3, 1980
    Assignee: Texaco Inc.
    Inventors: Curtis E. Howard, Douglas G. Calvin, Robert W. Pitts, Jr.
  • Patent number: 4206059
    Abstract: This invention is directed to a composition and process for the preparation of water-emulsifiable metal-working lubricant compositions having improved storage stability and superior characteristics, preferably compositions for drawing, rolling and other applications in cold metal working operations.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: June 3, 1980
    Assignee: Texaco Inc.
    Inventors: James R. Burton, Vernon W. Cantwell
  • Patent number: 4204279
    Abstract: An illustrative embodiment of the present invention includes methods for Seismic Data Processing which may be used to enhance the signal/noise ratio of seismic signals taken by use of the Common Depth Point or Hundred Percent Coverage survey techniques. The methods preserve time alignment and amplitude of the signals while effectively removing the noise therefrom. Small portions of the record centered at a selected time on a selected trace are processed to extract the coherent signal component from the reference trace as determined by comparison with other spacewise adjacent traces. Output records comprising the enhanced signal data and the noise data are produced.
    Type: Grant
    Filed: March 1, 1972
    Date of Patent: May 20, 1980
    Assignee: Texaco Inc.
    Inventors: Alvin L. Parrack, Delbert R. Lunsford
  • Patent number: 4203853
    Abstract: A two-step method for recovering hydrocarbons from a subterranean formation in which in situ combustion is first initiated in the formation by injection of air, for example, through an injection well, the injection of air is terminated and in a final step a combustion-supporting gas such as air, air mixed with oxygen, etc. and a combustible gas such as hydrogen, carbon monoxide and mixtures thereof are introduced into the formation preferably through separate sets of casing perforations and finally hydrocarbons are recovered via a production well.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: May 20, 1980
    Assignee: Texaco Inc.
    Inventor: Joseph C. Allen