Ying Hong Xu

US Patent:

8561724, Oct 22, 2013

Filed:

Jan 20, 2011

Appl. No.:

12/930948

Inventors:

Ying Qing Xu - Tomball TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 7/28

US Classification:

175273, 175279, 175286

Abstract:

Downhole cutting tools comprise a mandrel, a housing, a sleeve and a cutting blade. The mandrel comprises an inner wall surface defining a bore, and an outer wall surface. The housing is secured to the outer wall surface of the mandrel and comprises an opening. The sleeve is engaged with the outer wall surface of the mandrel. The sleeve comprises a profile that is operatively associated with a profile of the cutting blade such that movement of the sleeve causes the profile of the piston to slide along the profile of the cutting blade. In so doing, the cutting blade is radially extended outward through the opening in the housing to abrade an object located outside the housing. Movement of the sleeve can be achieved by pumping fluid down a bore in the mandrel to slide the sleeve long the outer wall surface of the mandrel.

US Patent:

20120068864, Mar 22, 2012

Filed:

Nov 23, 2011

Appl. No.:

13/303979

Inventors:

Ying Xu - Plano TX, US
Shaofang Wang - Shenzhen, CN

Assignee:

Huawei Technologies Co., Ltd. - Shenzhen

International Classification:

H03M 7/00

US Classification:

341 50

Abstract:

A method and apparatus for encoding based on a linear block code, and a method and apparatus for generating a linear block code are provided. The method for encoding based on a linear block code includes: generating a linear block code; and encoding an information sequence with an encoding matrix of the linear block code to obtain a bit stream sequence. The linear block codes have a good minimum distance characteristic, so that the error correction performance is improved.

US Patent:

20120261115, Oct 18, 2012

Filed:

Apr 13, 2011

Appl. No.:

13/085637

Inventors:

YING QING XU - Tomball TX, US

International Classification:

E21B 33/12

US Classification:

166193

Abstract:

Apparatuses for restricting fluid flow through a well conduit comprise a tubular member having an inner wall surface defining a bore and a seat in sliding engagement with the inner wall surface. Operatively associated with the seat is a plug element support member having an expanded position when the apparatus is in a run-in position and a contracted position when the apparatus is in a set position. A plug element adapted to be disposed into the bore and landed on the seat to restrict fluid flow through the bore and the well conduit is used to move the seat which in turn moves the plug element support member from the expanded position to the contracted position, thereby providing support to the plug member landed on the seat.

US Patent:

20120261140, Oct 18, 2012

Filed:

Apr 14, 2011

Appl. No.:

13/086446

Inventors:

Ying Qing Xu - Tomball TX, US

International Classification:

E21B 33/12

US Classification:

166386, 166193

Abstract:

Seats for receiving a plug member comprise a tubular member having a seat disposed therein and a fluid flow reduction member that reduces the velocity of the fluid flowing through the tubular member as it approaches the seat so as to reduce the impact of the plug member landing on the seat. The fluid flow reduction member may be disposed on a fluid flow reduction device, such as on an inner wall surface of a sleeved insert, or formed in the inner wall surface of the tubular member. The fluid reduction member can comprise one or more longitudinal channels, one or more apertures, or one or more curved-shaped grooves disposed either on the inner wall surface of the tubular member or on a fluid flow reduction device, such as on an inner wall surface of a sleeved insert disposed within the tubular member.

US Patent:

20120292030, Nov 22, 2012

Filed:

May 17, 2011

Appl. No.:

13/109497

Inventors:

YING QING XU - Tomball TX, US
Tianping Huang - Spring TX, US

International Classification:

E21B 43/26
E21B 34/00

US Classification:

1663081, 166318

Abstract:

Downhole tools for pumping an acid into a wellbore prior to pumping a fracturing fluid comprise a housing and an actuator member disposed therein. The housing comprises a port that is initially placed in fluid communication with an acid so the acid can be pumped into the wellbore and is then placed in fluid communication with a fracturing fluid so the fracturing fluid can be pumped into the same location within the wellbore. The downhole tool may comprise a chamber having the acid disposed therein. Alternatively, the acid can be part of an acid slug disposed at a leading edge of a fracturing fluid being pumped through the downhole tool.

US Patent:

20130168091, Jul 4, 2013

Filed:

Jan 3, 2012

Appl. No.:

13/342260

Inventors:

Ying Qing Xu - Tomball TX, US
Yang Xu - Houston TX, US

International Classification:

E21B 31/08

US Classification:

166301, 166 99

Abstract:

A downhole tool for removing debris from fluid flowing through the downhole tool comprises a screen member and wiper member, the wiper member having at least one window disposed through the inner and outer wall surfaces of the wiper member. Either the screen member or the wiper member is rotatable such that rotation of the screen member or the wiper member causes debris disposed on the outer wall surface of the screen member to fall-off the screen member. At least one directional port disposed at either the upper end of the screen member or the upper end of the wiper member causes rotation of the screen member or wiper member when fluid flows through the downhole tool.

US Patent:

20130284428, Oct 31, 2013

Filed:

Apr 25, 2012

Appl. No.:

13/455879

Inventors:

YING QING XU - Tomball TX, US

International Classification:

E21B 43/02
E21B 34/06

US Classification:

1662441, 166330

Abstract:

A downhole tool for moving fluid through the tool comprises a rotatable sleeve disposed within a bore of the tool. The sleeve includes an opened upper end and a closed lower end to define a cavity. A fluid movement profile is disposed along the lower end. A directional port is disposed in the side of the sleeve in fluid communication with the cavity and an upper port disposed in the tool. The upper port can be isolated from a lower port in the tool, the lower port being in fluid communication with the fluid movement profile. A first fluid flowing downward enters the cavity, exits the directional port causing rotation of the sleeve, and flows out the tool through the upper port. Sleeve rotation causes a second fluid to be drawn upward into contact with the fluid movement profile which directs the second fluid out of the lower port.

US Patent:

20130341017, Dec 26, 2013

Filed:

Jun 21, 2012

Appl. No.:

13/528910

Inventors:

YANG XU - Houston TX, US
Ying Qing Xu - Tomball TX, US
Gregory L. Hern - Porter TX, US

International Classification:

E21B 43/38
E21B 31/08

US Classification:

166265, 166 99

Abstract:

A downhole tool for removing debris from a wellbore comprises a body having a bore, a collection member, and a means for creating a hydraulic barrier within a wellbore annulus. The hydraulic barrier within the wellbore annulus restricts upward movement of a debris laden fluid within the wellbore annulus causing the debris laden fluid to be directed toward the collection member. Thus, the hydraulic barrier facilitates removal of debris from the wellbore.