Donald Lee Freeman

Address:

13111 Yaupon Holly Ln, Houston, TX 77044

VIN:

1FTEW1C85AFA27690

Make:

FORD

Model:

F-150

Year:

2010

Address:

1332 E Morphy St, Fort Worth, TX 76104

Phone:

8172982855

VIN:

1G2ZG58NX74127300

Make:

PONTIAC

Model:

G6

Year:

2007

US Patent:

20110139432, Jun 16, 2011

Filed:

Dec 14, 2010

Appl. No.:

12/967981

Inventors:

Donald Bryan Freeman - Humble TX, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

E21B 43/24
F16K 17/38

US Classification:

166 57, 137468

Abstract:

Methods and apparatus for enhanced and improved viscous oil recovery are disclosed. A horizontal well is drilled through the viscous oil formation. A liner includes temperature actuated valves for delivering steam more uniformly along the heel and toe portions of the liner. The temperature actuated valves include an actuation mechanism that actuates from an open position to a closed position to control the flow of the steam therethrough. The actuation mechanism actuates to the closed position when it exceeds a predetermined temperature. Heat from the steam mobilizes and lowers the viscosity of the heavy crude wherein the crude is then produced to the surface via conventional lift arrangements.

US Patent:

20120247780, Oct 4, 2012

Filed:

Mar 30, 2011

Appl. No.:

13/075424

Inventors:

ERIC WRIGHT GILBERTSON - CAMBRIDGE MA, US
FRANZ HOVER - SOMERVILLE MA, US
EDUARDO COLINA - SAN RAMON CA, US
DONALD BRYAN FREEMAN - HOUSTON TX, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA
Massachusetts Institute of Technology - Cambridge MA

International Classification:

E21B 34/06

US Classification:

166330

Abstract:

In one embodiment, a valve comprising a valve body; an orifice disposed within the valve body; a fluid flow restraining member located at a first location of the orifice, the fluid flow restraining member pivotable between a closed position and an open position; an extending member connected to, and moveable in pivotable synchronization with, the fluid flow restraining member; and a shape memory alloy element attached to the extending member and the valve body, the shape memory alloy element causing a pivotal movement of the extending member between positions corresponding to the open and closed positions responsive to a change in temperature of the shape memory alloy element.

US Patent:

20130146155, Jun 13, 2013

Filed:

Dec 11, 2012

Appl. No.:

13/711391

Inventors:

CHEVRON U.S.A. INC. - San Ramon CA, US
MASSACHUSETTS INSTITUTE OF TECHNOLOGY - Cambridge MA, US
Donald Bryan Freeman - Houston TX, US
Jose Arellano - Houston TX, US

Assignee:

MASSACHUSETTS INSTITUTE OF TECHNOLOGY - Cambridge MA
CHEVRON U.S.A. INC. - San Ramon CA

International Classification:

F16K 31/12

US Classification:

137468

Abstract:

A valve actuator, valve, and method of actuation of a valve are disclosed. The valve actuator includes a shape memory alloy element attachable to a valve body, capable of use with a valve to cause movement of the valve between first and second positions responsive to at least a threshold amount of temperature change of the shape memory alloy element. The valve actuator further includes a negative-differential spring applied to the shape memory alloy element, thereby reducing the threshold amount of temperature change needed to cause movement of the valve between the first and second positions.