Chad C Rasmussen

US Patent:

8151877, Apr 10, 2012

Filed:

Apr 18, 2008

Appl. No.:

12/148414

Inventors:

Robert D. Kaminsky - Houston TX, US
Chad C. Rasmussen - Houston TX, US

Assignee:

ExxonMobil Upstream Research Company - Houston TX

International Classification:

E21B 43/243

US Classification:

166256, 166260, 166 52, 166 59

Abstract:

A method for in situ heating of an organic-rich rock formation is provided. Preferably the organic-rich rock formation comprises kerogen. The method may include the steps of providing a first wellbore extending at least to a depth of the organic-rich rock formation, and providing a second wellbore also extending to a depth of the organic-rich rock formation and intersecting the first wellbore. The method may also include injecting air and a combustible fuel into the first wellbore, and providing a downhole burner in the wellbore so as to cause the air and the combustible fuel to mix and to combust at substantially the depth of the organic-rich rock formation. The method may further include, circulating combustion products into and up the second wellbore such that a pyrolysis zone is created from the first wellbore and second wellbores that provides substantially complete pyrolysis of the organic-rich rock formation between the first wellbore and the second wellbore. Operating conditions may be set or controlled so that the pyrolysis zones surrounding the first and second wellbore mate so to minimize underheated and overheated regions.

US Patent:

20090050319, Feb 26, 2009

Filed:

Apr 18, 2008

Appl. No.:

12/148388

Inventors:

Robert D. Kaminsky - Houston TX, US
Chad C. Rasmussen - Houston TX, US

International Classification:

E21B 43/285

US Classification:

166257, 166 59, 166302

Abstract:

A method for in situ heating of a selected portion of a targeted organic-rich rock formation such as an oil shale formation is provided. The method includes the steps of providing casing in a wellbore extending to a depth within or below the selected portion of the organic-rich rock formation, and also providing a tubing within the casing. An annular region is formed between the tubing and the surrounding casing. Air or other oxidant and a combustible fuel are injected into the wellbore. Either the air or the combustible fuel is in stoichiometric combustion excess. The method also includes providing hardware in the wellbore so as to cause the air and the combustible fuel to mix and to combust at substantially the depth of the organic-rich rock formation. The hardware may include more than one burner. Insulation may be placed along the tubing adjacent the first burner in order to reduce the heat transfer coefficient within the tubing and to provide a more uniform temperature within the annulus.

US Patent:

20110000221, Jan 6, 2011

Filed:

Mar 25, 2009

Appl. No.:

12/919702

Inventors:

Moses Minta - Missouri City TX, US
Franklin F. Mittricker - Jamul CA, US
Peter Rasmussen - Conroe TX, US
Loren K. Starcher - Sugar Land TX, US
Chad C. Rasmussen - Houston TX, US
James T. Wilkins - Houston TX, US
Richard W. Meidel Jr. - The Woodlands TX, US

International Classification:

F02C 6/00
F02C 7/22

US Classification:

60783, 60722, 60784

Abstract:

Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes integrated pressure maintenance and miscible flood systems with low emission power generation. An alternative system provides for low emission power generation, carbon sequestration, enhanced oil recovery (EOR), or carbon dioxide sales using a hot gas expander and external combustor. Another alternative system provides for low emission power generation using a gas power turbine to compress air in the inlet compressor and generate power using hot carbon dioxide laden gas in the expander. Other efficiencies may be gained by incorporating heat cross-exchange, a desalination plant, co-generation, and other features.

US Patent:

20110300493, Dec 8, 2011

Filed:

Aug 31, 2009

Appl. No.:

13/062442

Inventors:

Franklin F Mittricker - Jamul CA, US
Loren K. Starcher - Sugar Land TX, US
Chad Rasmussen - Houston TX, US
Richard A. Huntington - Oak Hill VA, US
Frank Hershkowitz - Basking Ridge NJ, US

International Classification:

F23N 5/00
F23N 1/00
F23D 14/62

US Classification:

431 12, 431354, 431 89, 431 13

Abstract:

The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and COand having an oxygen to COratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.

US Patent:

20120131925, May 31, 2012

Filed:

Jun 3, 2010

Appl. No.:

13/376277

Inventors:

Franklin F. Mittricker - Jamul CA, US
Dennis M. O'Dea - Somerset NJ, US
Harry W. Deckman - Clinton NJ, US
Chad C. Rasmussen - Houston TX, US
David R. Noble - Marietta GA, US
Jerry M. Seitzman - Atlanta GA, US
Timothy C. Lieuwen - Atlanta GA, US
Sulabh K. Dhanuka - Houston TX, US
Richard Huntington - Houston TX, US

Assignee:

EXXONMOBIL UPSTREAM RESEARCH COMPANY - Houston TX

International Classification:

F02C 3/20
F02C 9/00
F23R 3/10
F02C 3/30

US Classification:

60772, 60 39461, 60737, 60754, 60756, 60748, 60 3923

Abstract:

Systems and methods for an oxy-fuel type combustion reaction are provided. In one or more embodiments, a combustion system can include at least two mixing zones, where a first mixing zone at least partially mixes oxygen and carbon dioxide to produce a first mixture and a second mixing zone at least partially mixes the first mixture with a fuel to produce a second mixture. The combustion system can also include a combustion zone configured to combust the second mixture to produce a combustion product. In one or more embodiments, the first mixture can have a spatially varied ratio of oxygen-to-carbon dioxide configured to generate a hot zone in the combustion zone to increase flame stability in the combustion zone.

US Patent:

20120144837, Jun 14, 2012

Filed:

Jul 9, 2010

Appl. No.:

13/387617

Inventors:

Chad Rasmussen - Houston TX, US
Richard A. Huntington - Houston TX, US
Dennis O'Dea - Somerset NJ, US
Franklin F. Mittricker - Jamul CA, US
Frank Hershkowitz - Basking Ridge NJ, US

International Classification:

F02C 1/00

US Classification:

60772, 60 3919

Abstract:

Methods and systems for oxyfuel based low emission power generation in hydrocarbon recovery processes are provided. One system includes a plenum and is configured to encourage post-combustor conversion of gaseous components such that a desired chemical state is achieved. Another system includes a steam reformer for reforming a control fuel stream to generate a reformed control fuel stream characterized by an increase in hydrogen, as compared to the control fuel stream.

US Patent:

20130145794, Jun 13, 2013

Filed:

Jan 5, 2011

Appl. No.:

13/580131

Inventors:

Chad C. Rasmussen - Omaha NE, US
Garth M. Norman - Houston TX, US
Michael R Miller - Houston TX, US
Justin Brennan - Levittown PA, US

International Classification:

F25J 1/00
H02K 57/00

US Classification:

62611, 290 54

Abstract:

The present techniques are directed to a flexible liquefied natural gas (LNG) plant that may be tied to an external electric grid for importing or exporting electric power. Exemplary embodiments provide a method for producing LNG that includes producing a base load capacity of refrigeration capacity for LNG production from a first compression system. Electricity may be produced from a second compressor string if electricity is needed by an external power grid, or a second amount of refrigeration capacity may be provided by the second compressor string is natural gas feed is available and the external grid does not need power.

US Patent:

20210131613, May 6, 2021

Filed:

Oct 5, 2020

Appl. No.:

17/063030

Inventors:

- Spring TX, US
Chad C. RASMUSSEN - Spring TX, US
Richard Perry CONNELL - Houston TX, US

International Classification:

F17C 9/04
F25J 1/00

Abstract:

Methods and systems for cryogenically separating contaminants and regasification of LNG utilizing common refrigeration equipment and/or fuel. An integrated system includes: a component for separating contaminants from an input feed stream; a heat exchanger coupled to a first line, wherein: the first line is coupled to the component for separating contaminants, and the heat exchanger cools a first feed stream of the first line; and a LNG regasification system comprising a vaporizer, wherein: the vaporizer heats a LNG stream of the LNG regasification system, and the heat exchanger functions as the vaporizer. A process includes: separating contaminants from an input feed stream with a component for separating contaminants; cooling a first feed stream with a heat exchanger, wherein the heat exchanger is coupled to the component for separating contaminants; and heating a LNG stream with a vaporizer of a LNG regasification system, wherein the heat exchanger functions as the vaporizer.