Bobby Wade Martinez

US Patent:

6722157, Apr 20, 2004

Filed:

Mar 20, 2003

Appl. No.:

10/393472

Inventors:

Anthony P. Eaton - Sugar Land TX
Bobby D. Martinez - Missouri City TX

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

F25J 100

US Classification:

62612, 62613

Abstract:

A system for liquefying natural gas by cooling the natural gas stream in a first refrigeration cycle employing a non-volatile refrigerant, such as carbon dioxide, and subsequently cooling the natural gas stream in a second refrigeration cycle employing a predominately methane refrigerant.

US Patent:

7422543, Sep 9, 2008

Filed:

Sep 14, 2005

Appl. No.:

11/226741

Inventors:

Weldon L. Ransbarger - Houston TX, US
Bobby D. Martinez - Missouri City TX, US

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

F02C 7/36
F16H 61/48
F16D 33/00

US Classification:

477 53, 477 30, 60330, 60718

Abstract:

A system employing a torque converter and a synchronizing motor to start up a large rotational driver/load combination. The torque converter is employed to increase the rotational speed of the load to the maximum speed permitted by the torque converter. The synchronizing motor is then employed to further increase the rotational speed of the load to substantially match the rotational speed of the driver.

US Patent:

7591149, Sep 22, 2009

Filed:

Jul 24, 2006

Appl. No.:

11/459500

Inventors:

Weldon L. Ransbarger - Houston TX, US
Bobby D. Martinez - Missouri City TX, US
Attilio J. Praderio - Houston TX, US

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

F25J 3/00

US Classification:

62612, 62611

Abstract:

Cascade-type natural gas liquefaction methods and apparatus are provided, having enhanced thermodynamic efficiencies, through the use of added refrigeration levels in one or both of the ethylene and methane refrigeration systems thereof.

US Patent:

8591199, Nov 26, 2013

Filed:

Jan 11, 2007

Appl. No.:

11/622338

Inventors:

Bobby D. Martinez - Sugar Land TX, US
John R. Wolflick - Las Cruces NM, US
Jaleel Valappil - Houston TX, US

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

F04B 23/04

US Classification:

4171992, 417244, 417246, 417247, 417286, 417 53

Abstract:

An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in each stage prior to initiating rotation of the compressor/driver system. The isolation of individual compression stages allows the turbine to reach normal operating speeds with substantially no supplemental power from an auxiliary source.

US Patent:

7266976, Sep 11, 2007

Filed:

Oct 25, 2004

Appl. No.:

10/972821

Inventors:

Anthony P. Eaton - Sugar Land TX, US
Bobby D. Martinez - Missouri City TX, US
Michael Christian - Panorama Village TX, US

Assignee:

ConocoPhillips Company - Bartlesville OK

International Classification:

F25J 1/00
F28D 7/10

US Classification:

62612, 165157

Abstract:

LNG facility employing one or more vertical core-in-kettle heat exchangers to cool natural gas via indirect heat exchange with a refrigerant. The vertical core-in-kettle heat exchangers save plot space and can be use to reduce the size of cold boxes employed in the LNG facility. In addition, vertical core-in-kettle heat exchangers can exhibit enhanced heat transfer efficiency due to improved refrigerant access to the core, improved refrigerant circulation around the core, and/or improved vapor/liquid disengagement above the core.

US Patent:

20070283718, Dec 13, 2007

Filed:

Jun 8, 2006

Appl. No.:

11/422981

Inventors:

Kevin H. Hulsey - Houston TX, US
Weldon L. Ransbarger - Houston TX, US
Bobby D. Martinez - Missouri City TX, US

International Classification:

F25J 1/00

US Classification:

62612

Abstract:

The current invention provides a methodology and apparatus for the liquefaction of normally gaseous material, most notably natural gas, which reduces the number of process vessels required and/or reduces space requirements over convention apparatus.

US Patent:

6640586, Nov 4, 2003

Filed:

Nov 1, 2002

Appl. No.:

10/286292

Inventors:

Ned P. Baudat - Sugar Land TX
Bobby D. Martinez - Missouri City TX
Paul R. Hahn - Houston TX
Hans P. Weyermann - Katy TX
Wesley R. Qualls - Houston TX

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

F25J 100

US Classification:

62612, 62611

Abstract:

Natural gas liquefaction system employing electric motors as compressor drivers. A combination of motors and steam turbines can be powered by a cogeneration plant and employed as drivers.