Yue Wang

US Patent:

6467469, Oct 22, 2002

Filed:

Jan 31, 2001

Appl. No.:

09/773040

Inventors:

Chang Yang - West Bloomfield MI
Gregory R. White - Columbus IN
Robert S. Henrich - Columbus IN
Yue Yun Wang - Columbus IN
John M. Janssen - Nashville IN
Ray C. Hatton - Columbus IN

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

F02M 2507

US Classification:

12356821, 12356816

Abstract:

An EGR valve position control system includes an EGR valve manager responsive to an EGR valve command to drive an EGR valve actuator. The EGR valve manager is operable to schedule control gains as a function of valve actuation direction to provide for faster response during valve closing events. Valve closing events are also staged such that a large valve position step is followed by a steady ramp to the valve closed position to thereby prevent damage to the valve and/or valve seat. The EGR valve manager further includes a prioritized switching feature for strategically switching between closed and open loop control modes, and a forward gain adjustment feature responsive to battery voltage to maintain constant system DC gain under changing battery voltage conditions.

US Patent:

7715986, May 11, 2010

Filed:

May 22, 2007

Appl. No.:

11/751975

Inventors:

Tamas Nemeth - San Ramon CA, US
Yue Wang - San Ramon CA, US
Fuhao Qin - Spring TX, US
Ross Hill - Houston TX, US

Assignee:

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

International Classification:

G01V 1/00
G01V 1/28
G01V 1/38

US Classification:

702 14, 702 16, 702 17, 703 5, 367 24, 367 73

Abstract:

The present invention incorporates the use of model-driven and data-driven methodologies to attenuate multiples in seismic data utilizing a prediction model which includes multiply-reflected, surface-related seismic waves. The present invention includes beam techniques and convolving a predicted multiples beam with a segment of a modeled pegleg beam to obtain a convolved multiples beam. The convolved multiples beam can then he deconvolved to attenuate the multiples that are present in the original input beam.

US Patent:

7921108, Apr 5, 2011

Filed:

Nov 16, 2007

Appl. No.:

11/941354

Inventors:

Yue Rona Wang - Palo Alto CA, US
William Ryan Massie - San Francisco CA, US
Anton V. Jouline - Sherman Oaks CA, US

Assignee:

IAC Search & Media, Inc. - Oakland CA

International Classification:

G06F 7/00
G06F 17/30
G06F 15/16

US Classification:

707724, 707722, 707723

Abstract:

The invention also provides a method of interfacing with a client computer system, wherein search results include search results with geographic locations outside the first selected area if the number of the search results that have geographic locations within the selected area are less than a predetermined threshold value.

US Patent:

8060312, Nov 15, 2011

Filed:

Mar 24, 2008

Appl. No.:

12/079170

Inventors:

Yue Wang - Danville CA, US
Norman Ross Hill - Houston TX, US

Assignee:

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

International Classification:

G01V 1/00
G06F 19/00

US Classification:

702 14

Abstract:

A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

US Patent:

8219321, Jul 10, 2012

Filed:

Sep 19, 2011

Appl. No.:

13/236542

Inventors:

Yue Wang - Danville CA, US
Norman Ross Hill - Houston TX, US

Assignee:

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

International Classification:

G01V 1/00
G06F 19/00

US Classification:

702 14

Abstract:

A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

US Patent:

8275550, Sep 25, 2012

Filed:

Apr 3, 2009

Appl. No.:

12/418343

Inventors:

Wei Liu - San Ramon CA, US
Yue Wang - Danville CA, US

Assignee:

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

International Classification:

G01V 1/40
G01V 1/00
G06G 7/48

US Classification:

702 11, 367 73, 703 10

Abstract:

A method and system for target-oriented reverse time migration for prestack depth imaging. One embodiment of the present invention includes determining an acquisition area within an earth model and also determining a reference surface near a target in the subsurface region of interest. The embodiment includes exciting wavefields from the reference surface and propagating the excited wavefields through the earth model. The embodiment additionally includes recording the wavefields at receiver locations in the acquisition area and at the target and synthesizing wavefields along the reference surface to reconstruct Green's functions which relate the receiver locations in the acquisition area to the target. The embodiment includes utilizing the Green's functions and prestack seismic data to determine subsurface characteristics of the subsurface region.

US Patent:

8301385, Oct 30, 2012

Filed:

Jun 29, 2010

Appl. No.:

12/826176

Inventors:

Chaoshun Hu - San Ramon CA, US
Yue Wang - Danville CA, US
Tamas Nemeth - San Ramon CA, US

Assignee:

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

International Classification:

G01V 1/28

US Classification:

702 14, 702 16, 702 17, 702181, 703 2, 367 38, 367 53

Abstract:

Beamed data can be obtained from shot gather data, and debeamed data can be obtained from beamed data. Shot gather data for a geophysical volume of interest in a first domain and/or beamed data in a third domain may be received. The first domain has a component relating to seismic wave propagation time and a spatial component relating to lateral spacing. The third domain has a component relating to local plane wave arrival time at a beam center surface location and a component relating to plane wave arrival directions. Data may be transformed between the first domain and a second domain. The second domain has a frequency component and a spatial component corresponding to the spatial component of the first domain. A forward or reverse transform may be applied to transform shot gather data in the first domain to/from beamed data in the third domain.

US Patent:

8614930, Dec 24, 2013

Filed:

Mar 23, 2011

Appl. No.:

13/069951

Inventors:

Linbin Zhang - Danville CA, US
Guojian Shan - San Ramon CA, US
Yue Wang - Danville CA, US

Assignee:

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

International Classification:

G01V 1/36
G01V 1/28

US Classification:

367 43, 367 38, 702 17

Abstract:

A system and computer-implemented method for accounting for temporal dispersion in low-order finite difference seismic wave propagation is disclosed. An embodiment of the method includes transforming a seismic dataset from time domain to frequency domain to obtain a frequency-domain seismic dataset, applying a frequency-domain time varying filter to the frequency-domain seismic dataset to obtain a filtered frequency-domain seismic dataset, and transforming the filtered frequency-domain seismic dataset from the frequency domain to the time domain to obtain a time-domain filtered seismic dataset. The frequency-domain time varying filter is based on the effective phase velocity inherent in a finite-difference solution to the wave equation. The frequency-domain time varying filter may be applied to a synthetic seismic dataset that was generated by low-order finite difference modeling. A different frequency-domain time varying filter may be applied to recorded seismic data prior to reverse time migration.