Patents by Inventor Etuan Zhang

Etuan Zhang 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).

  • In situ thermal processing of an oil reservoir formation
    Publication number: 20030173081
    Abstract: An in situ process for treating an oil containing formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or more heat sources pyrolyzes at least some hydrocarbons within the part. Hydrocarbons may be produced from the formation.
    Type: Application
    Filed: October 24, 2002
    Publication date: September 18, 2003
    Inventors: Harold J. Vinegar, Ilya Emil Berchenko, Eric P. de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Scott Lee Wellington, Etuan Zhang
  • In situ thermal processing of an oil shale formation using a pattern of heat sources
    Publication number: 20030173080
    Abstract: A oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat sources may be used to heat the formation. The heat sources may be positioned within the formation in a selected pattern.
    Type: Application
    Filed: April 24, 2002
    Publication date: September 18, 2003
    Inventors: Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, John Michael Karanikas, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Scott Lee Wellington, Etuan Zhang
  • In situ thermal processing of an oil shale formation to produce a condensate
    Publication number: 20030173078
    Abstract: An oil shale formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to maintain a temperature below about a maximum selected temperature.
    Type: Application
    Filed: April 24, 2002
    Publication date: September 18, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, John Michael Karanikas, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing of an oil shale formation in a reducing environment
    Publication number: 20030164239
    Abstract: An oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A reducing environment may be maintained within a portion of the formation.
    Type: Application
    Filed: April 24, 2002
    Publication date: September 4, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing of a coal formation using a controlled heating rate
    Publication number: 20030164238
    Abstract: A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A heating rate to a selected volume of the formation may be controlled by altering an amount of heating energy per day that is provided to the selected volume.
    Type: Application
    Filed: April 24, 2001
    Publication date: September 4, 2003
    Inventors: Harold J. Vinegar, Scott Lee Wellington, Eric Pierre de Rouffignac, John Michael Karanikas, Ilya Emil Berchenko, George Leo Stegemeier, Etuan Zhang, Thomas David Fowler, Robert Charles Ryan
  • In situ thermal processing of a hydrocarbon containing formation using a movable heating element
    Publication number: 20030164234
    Abstract: A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat may be applied to the formation from heating elements positioned within wellbores. Portions of the heater elements may be free to move within the wellbores to inhibit failure of the heater elements due to thermal expansion.
    Type: Application
    Filed: April 24, 2001
    Publication date: September 4, 2003
    Inventors: Eric Pierre de Rouffignac, Harold J. Vinegar, Scott Lee Wellington, Gordon Thomas Shahin, Ilya Emil Berchenko, George Leo Stegemeier, Etuan Zhang, Thomas David Fowler, Robert Charles Ryan
  • In Situ thermal processing of a coal formation to produce a condensate
    Patent number: 6607033
    Abstract: A coal formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise a temperature of the formation at a selected rate.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: August 19, 2003
    Assignee: Shell Oil Company
    Inventors: Scott Lee Wellington, Harold J. Vinegar, Eric Pierre de Rouffignac, John Michael Karanikas, Ilya Emil Berchenko, George Leo Stegemeier, Etuan Zhang, Thomas David Fowler, Robert Charles Ryan
  • In situ thermal processing through an open wellbore in an oil shale formation
    Publication number: 20030141068
    Abstract: An oil shale formation may be treated using an in situ thermal process. Heat may be provided to the treatment area from one or more heat sources. A heat source may be positioned in an uncased wellbore. Heat may be allowed to transfer from the heat source to a section of the formation. Subsequently, hydrocarbons, H2, and/or other formation fluids may be produced from the formation.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 31, 2003
    Inventors: Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Bruce Gerard Hunsucker, John Michael Karanikas, Charles Robert Keedy, Robert Charles Ryan, Harold J. Vinegar, Scott Lee Wellington, Etuan Zhang
  • In situ thermal processing of an oil shale formation using a controlled heating rate
    Publication number: 20030142964
    Abstract: An oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a desited temperature. A heating rate for a selected volume of the formation may be controlled by altering an amount of heating energy per day that is provided to the selected volume.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 31, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing of an oil shale formation to increase permeability of the formation
    Publication number: 20030141067
    Abstract: An oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat may also be applied to the formation to increase a permeability of the formation. In some embodiments, the permeability of a portion of the formation may increase to a relatively high permeability as compared to the initial permeability.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 31, 2003
    Inventors: Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Scott Lee Wellington, Etuan Zhang
  • In situ thermal processing of hydrocarbons within a relatively permeable formation
    Publication number: 20030141065
    Abstract: A hydrocarbon containing formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to a first portion of the formation to mobilize hydrocarbons within the formation. Heat may be applied to a second portion of the formation to raise a temperature of the second portion to a pyrolysis temperature. Vaporized hydrocarbons and pyrolysis fluids may be produced from the formation.
    Type: Application
    Filed: April 24, 2001
    Publication date: July 31, 2003
    Inventors: John Michael Karanikas, Harold J. Vinegar, Scott L. Wellington, Eric Pierre de Rouffignac, Kevin Albert Maher, Etuan Zhang, Thomas David Fowler, Robert Charles Ryan, Meliha Deniz Sumnu-Dindoruk
  • In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range
    Publication number: 20030137181
    Abstract: An oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a desired temperature. An average temperature and/or pressure within the formation may be controlled to inhibit production of hydrocarbons that have carbon numbers greater than a selected carbon number. In some embodiments, the selected carbon number may be 25. A small amount of hydrocarbons having carbon numbers greater than the selected carbon number may be entrained in vapor produced from the formation.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 24, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing while controlling pressure in an oil shale formation
    Publication number: 20030136559
    Abstract: An oil shale formation may be treated using an in situ thermal process. Heat may be provided to the treatment area. Heat may be allowed to transfer from at least one heat source to a section of the formation. Pressure within a portion of the formation may be controlled. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. In some embodiments, the pressure may be controlled to obtain a desired property in the produced fluids.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 24, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing of an oil shale formation to produce a desired product
    Publication number: 20030136558
    Abstract: An oil shale formation may be treated using an in situ thermal process. Heat may be provided from one or more heat sources. Heat may be allowed to transfer from the heat sources to a section of the formation. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Conditions in a section of the formation may be controlled to produced a desired product.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 24, 2003
    Inventors: Scott Lee Wellington, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Etuan Zhang
  • In situ thermal processing of an oil shale formation with a selected property
    Publication number: 20030131993
    Abstract: An oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a desired temperature. In some embodiments, the formation to be treated may be selected based on formation characterisitics.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 17, 2003
    Inventors: Etuan Zhang, Ilya Emil Berchenko, Eric Pierre de Rouffignac, Thomas David Fowler, Kevin Albert Maher, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Scott Lee Wellington
  • In situ thermal processing of a relatively impermeable formation to increase permeability of the formation
    Publication number: 20030131995
    Abstract: A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be allowed to transfer from the heat sources to a selected section of the formation. The transferred heat may pyrolyze at least some hydrocarbons within the selected section. A mixture of hydrocarbons may be produced from the selected section. In some embodiments, the permeability of a portion of the formation may be increased relative to an initial permeability of the portion.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 17, 2003
    Inventors: Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin, George Leo Stegemeier, Harold J. Vinegar, Scott Lee Wellington, Etuan Zhang
  • In situ thermal processing of a coal formation with a selected vitrinite reflectance
    Patent number: 6591907
    Abstract: A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. The formation to be treated may be chosen so that the mixture produced from the formation will have a desired amount of condensable hydrocarbons and non-condensable hydrocarbons. The formation to be treated may be chosen based on an initial vitrinite reflectance of the formation.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: July 15, 2003
    Assignee: Shell Oil Company
    Inventors: Etuan Zhang, Harold J. Vinegar, Scott Lee Wellington, Eric Pierre de Rouffignac, John Michael Karanikas, Ilya Emil Berchenko, George Leo Stegemeier, Kevin Albert Maher, Thomas David Fowler, Robert Charles Ryan
  • In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content
    Patent number: 6591906
    Abstract: A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A formation to be treated may produce a relatively large amount of condensable hydrocarbons and/or a relatively large amount of non-condensable hydrocarbons. Hydrocarbons within the formation may have a relatively low initial elemental oxygen weight percentage.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: July 15, 2003
    Assignee: Shell Oil Company
    Inventors: Scott Lee Wellington, Harold J. Vinegar, Eric Pierre de Rouffignac, Ilya Emil Berchenko, George Leo Stegemeier, Kevin Albert Maher, Etuan Zhang, Gordon Thomas Shahin, Jr., Thomas David Fowler, Robert Charles Ryan
  • In situ thermal processing of a relatively impermeable formation using an open wellbore
    Publication number: 20030130136
    Abstract: A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be allowed to transfer from the heat sources to a selected section of the formation. The transferred heat may pyrolyze at least some hydrocarbons within the selected section. A mixture of hydrocarbons may be produced from the selected section. In certain embodiments, one or more heat sources may be placed in an uncased wellbore.
    Type: Application
    Filed: April 24, 2002
    Publication date: July 10, 2003
    Inventors: Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Bruce Gerard Hunsucker, John Michael Karanikas, Charles Robert Keedy, Robert Charles Ryan, Harold J. Vinegar, Scott Lee Wellington, Etuan Zhang
  • In Situ thermal processing of a coal formation to control product composition
    Patent number: 6588503
    Abstract: A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat and pressure applied to the formation may be controlled so that a majority of the hydrocarbons produced from the formation have carbon numbers less than 25. Conditions may be controlled to produce low quantities of olefins in condensable hydrocarbons produced from the formation and low quantities of olefins in non-condensable hydrocarbons produced from the formation.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: July 8, 2003
    Assignee: Shell Oil Company
    Inventors: John Michael Karanikas, Scott Lee Wellington, Harold J. Vinegar, Eric Pierre de Rouffignac, Ilya Emil Berchenko, George Leo Stegemeier, Etuan Zhang, Thomas David Fowler, Robert Charles Ryan