Kwang M Yoo

US Patent:

6367366, Apr 9, 2002

Filed:

Jun 20, 2000

Appl. No.:

09/599071

Inventors:

Duane Bloom - Anaheim CA
James W. Estep - Houston TX
Rudolph Ernst Krueger - Houston TX
Bruce Norman Moore - Aliso Viejo CA
Kwang M. Yoo - Houston TX

Assignee:

Western Well Tool, Inc. - Anaheim CA

International Classification:

F01B 3112

US Classification:

92 5R

Abstract:

A sensor assembly including a sensor mounted on the piston and a transmitter mounted on either the piston or cylinder. Preferably the transmitter includes a wheel which engages the wall of the cylinder so as to rotate as the piston reciprocates within the cylinder. The wheel includes one or more magnets which emit a magnetic field that is received by the sensor as the wheel rotates whereby the sensor provides a signal indicative of the rotation of the wheel. The sensor then sends the signal to a logic component which determines the direction, travel and position of the piston within the cylinder.

US Patent:

6411084, Jun 25, 2002

Filed:

Apr 5, 1999

Appl. No.:

09/286362

Inventors:

Kwang M. Yoo - Houston TX

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 4709

US Classification:

324221, 324235, 1662551

Abstract:

A casing joint locator device and methods of use are described. The locator device includes a giant magnetoresistive (GMR) sensor that is capable of detecting joints between sections of casing in a wellbore. The methods and devices described detect perturbations in the earths magnetic field caused by air gaps and discontinuities associated with a casing joint or with an external casing joint collar. As a result, they are capable of detecting flush and standard collared joints. The casing joint locator generates essentially no magnetic or electromagnetic field so that other downhole instrumentation is not affected by its presence.

US Patent:

6815946, Nov 9, 2004

Filed:

Apr 12, 2002

Appl. No.:

10/121399

Inventors:

Kwang M. Yoo - Houston TX

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 4709

US Classification:

324221, 324235, 1662551

Abstract:

A detector assembly and methods including a magnetoresistive sensor capable of detecting anomalies in the wall of a casing string disposed in a wellbore. Examples of anomalies include gaps between casings such as due to casing joints, air gaps in casing threads such as due to flush casing joints, enlarged casing wall thickness such as due to external casing collars, damaged casing, perforations, and other discontinuities or deformities in the casing. The detector assembly and methods detect perturbations in the earths magnetic field caused by the anomalies. The detector assembly generates essentially no magnetic or electromagnetic field so that other downhole instrumentation is not affected by its presence.

US Patent:

7095223, Aug 22, 2006

Filed:

Jul 1, 2004

Appl. No.:

10/882818

Inventors:

Kwang M. Yoo - Houston TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 47/09
G01N 27/72
G01R 33/12

US Classification:

324221, 324235, 1662551

Abstract:

A detector assembly and methods including a magnetoresistive sensor capable of detecting anomalies in the wall of a casing string disposed in a wellbore. Examples of anomalies include gaps between casings such as due to casing joints, air gaps in casing threads such as due to flush casing joints, enlarged casing wall thickness such as due to external casing collars, damaged casing, perforations, and other discontinuities or deformities in the casing. The detector assembly and methods detect perturbations in the earth's magnetic field caused by the anomalies. The detector assembly generates essentially no magnetic or electromagnetic field so that other downhole instrumentation is not affected by its presence.

US Patent:

7213681, May 8, 2007

Filed:

Feb 16, 2005

Appl. No.:

11/059214

Inventors:

James R. Birchak - Spring TX, US
Thomas E. Ritter - Katy TX, US
Ali I. Mese - Houston TX, US
Diederik van Batenburg - Delft, NL
William Trainor - Houston TX, US
Wei Han - Missouri City TX, US
Kwang Yoo - Houston TX, US
Daniel P. Kusmer - Sugar Land TX, US
Mark A. Proett - Missouri City TX, US
Ferdinand van der Bas - Vlaardingen, NL
Peter van der Sman - Heemstede, NL
Jeroen Groenenboom - The Hague, NL
Pedro Zuiderwijk - Delft, NL

Assignee:

Halliburton Energy Services, Inc. - Duncan OK
Shell International Exploration and Production B.V. - Rijawijk

International Classification:

G01V 1/02
G01V 1/112
G01V 1/143

US Classification:

181121, 181101, 181106, 181113, 367157

Abstract:

An apparatus for generating acoustic waves, the apparatus having: a support structure; two tines extending from the support structure so that proximal ends of the two tines are attached to the support structure so that distal ends of the two tines are positioned with standoffs relative to a dimension of the support structure and the distal ends of the two tines are uninhibited, wherein the two tines each comprise a moment arm; and an oscillator in mechanical communication with the two tines.

US Patent:

7216738, May 15, 2007

Filed:

Feb 16, 2005

Appl. No.:

11/059215

Inventors:

James R. Birchak - Spring TX, US
Thomas E. Ritter - Katy TX, US
Ali I. Mese - Houston TX, US
Diederik van Batenburg - Delft, NL
William Trainor - Houston TX, US
Wei Han - Missouri City TX, US
Kwang Yoo - Houston TX, US
Daniel P. Kusmer - Sugarl Land TX, US
Mark A. Proett - Missouri City TX, US
Ferdinand van der Bas - Vlaardingen, NL
Peter van der Sman - Heemstede, NL
Jeroen Groenenboom - The Hague, NL
Pedro Zuiderwijk - Delft, NL

Assignee:

Halliburton Energy Services, Inc. - Duncan OK
Shell International Exploration and Production B.V. - Rijswijk

International Classification:

G01V 1/02
G01V 1/112
G01V 1/143

US Classification:

181121, 181101, 181106, 181113, 367157

Abstract:

A method for generating acoustic waves, the method having the steps of: extending a tine from a support structure so that a proximal end of the tine is attached to the support structure and a distal end of the tine is uninhibited; positioning an oscillator so as to be supported by the support structure and to mechanically communicate with the tine; and oscillating the tine with the oscillator.

US Patent:

7591343, Sep 22, 2009

Filed:

Aug 26, 2005

Appl. No.:

11/213653

Inventors:

Wei Han - Missouri City TX, US
Robert Birchak - Spring TX, US
William Trainor - Houston TX, US
Thomas Ritter - Katy TX, US
Kwang Yoo - Houston TX, US
Diederik Van Batenburg - Delft, NL
Dan Kusmer - Stafford TX, US

Assignee:

Halliburton Energy Services, Inc. - Duncan OK

International Classification:

G01V 1/00

US Classification:

181108, 181113

Abstract:

An example apparatus for generating acoustic waves is disclosed. The example apparatus includes a housing, and at least one plate having a moment arm, wherein each plate couples to the housing. The example apparatus for generating acoustic also includes at least one axial driver coupled to each moment arm, wherein each axial driver aligns with a longitudinal axis of the housing.

US Patent:

8223590, Jul 17, 2012

Filed:

Dec 14, 2010

Appl. No.:

12/967088

Inventors:

Theodore G. Jones - Alexandria VA, US
Tsih C. Yang - Great Falls VA, US
Steven L. Means - Owings MD, US
Kwang B. Yoo - Silver Spring MD, US
Edward R. Franchi - Alexandria VA, US

Assignee:

The United States of America, as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 3/80

US Classification:

367128, 367 5, 367149

Abstract:

A system and method is provided for using acoustical pulses generated from an airborne laser source to locate objects under water. An array of acoustic sensors, such as passive sonobuoys at the ocean surface, is deployed in known or determinable locations by aircraft. Each area surrounded by acoustic sensors comprises a search cell, within which sonar scattering data can be used to locate objects. Following sonobuoy deployment, the aircraft uses the laser to rapidly generate many laser-acoustic pulse sources within each search cell, which in turn generate spherical acoustic pulses traveling through the water. The acoustic sensors receive the acoustic pulses, either on a direct path or on a scattered path after the pulse strikes an underwater object. The sensors record the acoustic signatures of the received pulses and transmit data of the recorded acoustic pulses to a processor such as processor on a nearby ship. The processor transforms the data of the acoustic signatures, together with data of the known locations of the acoustic sensors and the locations of the laser-acoustic pulse sources, into data of a location of the underwater objects.

Address:

12630 Huntingwick Dr, Houston, TX 77024

VIN:

5TDKK3DC7BS078185

Make:

TOYOTA

Model:

SIENNA

Year:

2011