Patents by Inventor Baozhong Yang
Baozhong Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11293275Abstract: A downhole recording device includes a housing centralizer, a housing, at least one radial connector connecting the housing to the housing centralizer, and an annular space between the housing centralizer and housing. The housing centralizer has a first end and a second end with a longitudinal opening through the housing centralizer from the first end to the second end. The housing is positioned radially within the longitudinal opening. The housing is configured to receive a downhole sensor. The annular space is located in the longitudinal opening of the housing centralizer and allows fluid communication from the first end of the housing centralizer to the second end of the housing centralizer.Type: GrantFiled: May 2, 2019Date of Patent: April 5, 2022Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Pusheng Zhang, Audrey Cherel, Baozhong Yang
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Patent number: 10669793Abstract: A latching dog includes a dog body, at least one engagement arm protrudes from an outer radial surface of the dog body in a transverse direction, and at least one retention fin protrudes from the dog body in a longitudinal direction. The at least one retention fin maintains the latching dog engaged with a housing surface to keep the latching dog at a desired axial and/or rotational position while milling the housing and latching dog.Type: GrantFiled: November 1, 2017Date of Patent: June 2, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Baozhong Yang, Dwayne P. Terracina, Tommy G. Ray, Jeremy O'Neal
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Publication number: 20190338630Abstract: A downhole recording device includes a housing centralizer, a housing, at least one radial connector connecting the housing to the housing centralizer, and an annular space between the housing centralizer and housing. The housing centralizer has a first end and a second end with a longitudinal opening through the housing centralizer from the first end to the second end. The housing is positioned radially within the longitudinal opening. The housing is configured to receive a downhole sensor. The annular space is located in the longitudinal opening of the housing centralizer and allows fluid communication from the first end of the housing centralizer to the second end of the housing centralizer.Type: ApplicationFiled: May 2, 2019Publication date: November 7, 2019Inventors: Pusheng Zhang, Audrey Cherel, Baozhong Yang
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Publication number: 20180135370Abstract: A latching dog includes a dog body, at least one engagement arm protrudes from an outer radial surface of the dog body in a transverse direction, and at least one retention fin protrudes from the dog body in a longitudinal direction. The at least one retention fin maintains the latching dog engaged with a housing surface to keep the latching dog at a desired axial and/or rotational position while milling the housing and latching dog.Type: ApplicationFiled: November 1, 2017Publication date: May 17, 2018Inventors: Baozhong Yang, Dwayne P. Terracina, Tommy G. Ray, Jeremy O'Neal
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Publication number: 20170089171Abstract: A rotational tool includes a shaft having a central fluid conduit within a housing, and one or more fluid conduits between the shaft and housing. The one or more fluid conduits are radially offset from the central fluid conduit. The shaft includes a plurality of fluid ports that extend radially and provide fluid communication between the one or more fluid conduits and the central fluid conduit. The fluid ports are longitudinally offset along the shaft to distribute any weakening of the shaft by the introduction of the fluid ports.Type: ApplicationFiled: September 29, 2016Publication date: March 30, 2017Inventors: Baozhong Yang, Jeffrey N. Dodge, Zhenbi Su
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Publication number: 20160032710Abstract: A downhole tool is disclosed for measuring wellbore geometry. The downhole tool may include a body with a bore extending at least partially therethrough. The body may include a radial recess. An arm may be movably coupled to the body at a first end portion of the arm. The arm may be within the radial recess in a retracted position and be pivotable in a radially-outward direction relative to the body to an expanded position. A measurement device coupled to the body may measure the pivoting motion of the arm. A piston coupled to the body may be movably coupled to a second end portion of the arm, and the piston may respond to changes in hydraulic pressure to pivot the arm between the retracted position and the expanded position.Type: ApplicationFiled: March 13, 2014Publication date: February 4, 2016Applicant: SMITH INTERNATIONAL, INC.Inventors: Jianbing Hu, James Layne Larsen, Tommy G. Ray, Dwayne P. Terracina, Rui Gao, Jennifer L. Pereira, Weixiong Wang, Ming Zhang, Zhenbi Su, Baozhong Yang, Siqi Xu, Sudarsanam Chellappa, Vishal Saheta, Robert Utter
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Publication number: 20150114716Abstract: Various implementations described herein are directed to a vibration tool, e.g., for use in drilling or other downhole operations. In one implementation, the vibration tool may include a housing having a bore extending therethrough. The vibration tool may also include a piston subassembly positioned inside the bore, where the piston subassembly is configured to oscillate when fluid flow inside the piston subassembly exceeds a predetermined flow rate. The vibration tool may further include a valve mechanism positioned around the piston subassembly, where the valve mechanism is configured to restrict fluid to flow inside the piston subassembly when the valve mechanism is in a closed state and configured to allow the fluid to flow from the piston subassembly to the bore when the valve mechanism is in an open state.Type: ApplicationFiled: September 26, 2014Publication date: April 30, 2015Inventors: Baozhong Yang, Tommy G. Ray, Jianbing Hu, Zhenbi Su, Dwayne P. Terracina, Xin Hu
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Publication number: 20140076633Abstract: Systems, methods and devices for equipping a rotatable drill string with measurement equipment. The system includes a removable carriage unit arranged and designed to be disposed within a bore of a removable section of the rotatable drill string. The removable carriage unit has measurement equipment disposed within a cavity thereof. The method includes disposing measurement equipment in the cavity of the removable carriage unit, coupling the removable carriage unit with a first end portion of the removable section of the rotatable drill string after disposing the measurement equipment in the cavity, and coupling a second end portion of the removable section with a shaft of the rotatable drill string.Type: ApplicationFiled: September 18, 2013Publication date: March 20, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: DWAYNE P. TERRACINA, BAOZHONG YANG, ZHENBI SU
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Patent number: 8240390Abstract: Disclosed herein are methods and apparatus for releasing a releasable packer. The apparatus may include shear screws, a mechanism for isolating the shear screw from a shearing force. The mechanism for isolating the shear screw from a shearing force is selectively unlockable to expose the shear screw to the shearing force. The methods may include unlocking a mechanism protecting at least one shear screw, applying a shearing force to the at least one shear screw, and shearing the at least one shear screw.Type: GrantFiled: December 30, 2009Date of Patent: August 14, 2012Assignee: Schlumberger Technology CorporationInventors: James D. Hendrickson, Baozhong Yang
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Publication number: 20110155395Abstract: Disclosed herein are methods and apparatus for releasing a releasable packer. The apparatus may include shear screws, a mechanism for isolating the shear screw from a shearing force. The mechanism for isolating the shear screw from a shearing force is selectively unlockable to expose the shear screw to the shearing force. The methods may include unlocking a mechanism protecting at least one shear screw, applying a shearing force to the at least one shear screw, and shearing the at least one shear screw.Type: ApplicationFiled: December 30, 2009Publication date: June 30, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: James D. Hendrickson, Baozhong Yang