Patents by Inventor Baojun Song
Baojun Song 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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Publication number: 20240132771Abstract: The present invention generally relates to the field of conformance control in oil fields, particularly to a re-crosslinkable preformed particle gel system, and composition thereof. The composition of the re-crosslinkable preformed particle gel system contains monomers, crosslinkers, a polymer matrix, and additives. Components in the composition for re-crosslinkable preformed particle gel in the present invention have excellent compatibility with each other, and the obtained gel has excellent long term high-temperature resistance property. Different from prior products, in the re-crosslinkable preformed particle gel compositions according to embodiments of the present invention, the components that are used to re-crosslink the particle gels may be grafted on the polymer chain and will act as initiator or secondary crosslinker in different conditions. During particle injection process, all compositions would move together, thereby avoiding chromatographic problems typical of prior products.Type: ApplicationFiled: September 20, 2021Publication date: April 25, 2024Inventors: Tao Song, Baojun Bai, Thomas P. Schuman
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Patent number: 11549520Abstract: Stationary diffusers, downhole centrifugal pumps, and methods of pressurizing a fluid may include vanes configured to direct fluid flow through fluid passageways, where at least some of the vanes include a bulge or protrusion extending axially beyond the fluid passageways into an open rotational volume of the diffuser in a direction toward an impeller.Type: GrantFiled: October 21, 2021Date of Patent: January 10, 2023Assignee: APERGY ESP SYSTEMS, LLCInventors: Baojun Song, David S. Baillargeon
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Publication number: 20220065266Abstract: Stationary diffusers, downhole centrifugal pumps, and methods of pressurizing a fluid may include vanes configured to direct fluid flow through fluid passageways, where at least some of the vanes include a bulge or protrusion extending axially beyond the fluid passageways into an open rotational volume of the diffuser in a direction toward an impeller.Type: ApplicationFiled: October 21, 2021Publication date: March 3, 2022Inventors: Baojun Song, David S. Baillargeon
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Patent number: 11181123Abstract: The present disclosure relates to a downhole centrifugal pump system designed to include a diffuser configuration which optimally transfers fluid and builds head pressure at a dead zone between the diffuser and an adjacently upper impeller, the dead zone being defined as an open rotational area between the stationary diffuser and the adjacently upper impeller. The diffuser includes a first side for receiving fluid from a first impeller and a second side for transferring the fluid upwardly to the adjacently upper impeller. The diffuser also includes a plurality of vanes that direct fluid flow from the first side to the second side. Each vane of the diffuser includes an edge at the second side that includes a bulge between a proximal edge and a distal edge on the second side. The bulge advantageously extends upwardly toward the second impeller to reduce the dead zone relative to if the second edge extended linearly from the proximal edge to the distal edge.Type: GrantFiled: March 22, 2019Date of Patent: November 23, 2021Assignee: APERGY ESP SYSTEMS, LLCInventors: Baojun Song, David S. Baillargeon
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Publication number: 20200300265Abstract: The present disclosure relates to a downhole centrifugal pump system designed to include a diffuser configuration which optimally transfers fluid and builds head pressure at a dead zone between the diffuser and an adjacently upper impeller, the dead zone being defined as an open rotational area between the stationary diffuser and the adjacently upper impeller. The diffuser includes a first side for receiving fluid from a first impeller and a second side for transferring the fluid upwardly to the adjacently upper impeller. The diffuser also includes a plurality of vanes that direct fluid flow from the first side to the second side. Each vane of the diffuser includes an edge at the second side that includes a bulge between a proximal edge and a distal edge on the second side. The bulge advantageously extends upwardly toward the second impeller to reduce the dead zone relative to if the second edge extended linearly from the proximal edge to the distal edge.Type: ApplicationFiled: March 22, 2019Publication date: September 24, 2020Inventors: Baojun Song, David S. Baillargeon
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Patent number: 9206677Abstract: A pump having an insert between an impeller and diffuser, where the insert includes an annulus that is in communication with fluid flow passages in the impeller and diffuser. The passages and annulus define a fluid flow path through the pump. Vanes are provided in the annulus that can pivot and vary the cross sectional area of the fluid flow path. Regulating the fluid flow path area alters the flow rate where the pump operates at its maximum efficiency. Thus by monitoring flow through the pump, the vanes can be adjusted so the flow rate of maximum efficiency corresponds to the actual flow rate.Type: GrantFiled: August 15, 2012Date of Patent: December 8, 2015Assignee: Baker Hughes IncorporatedInventors: Baojun Song, David Chilcoat
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Patent number: 9109602Abstract: An electric submersible pump (ESP) assembly increases pump efficiency and pump head with a diffuser that includes a diffuser vane having a low pressure surface with a length greater than a length of a high pressure surface of the vane. The diffuser vane includes a leading edge at a downstream end of the vane and a trailing edge at an upstream end of the vane. The curved high pressure surface extends between the leading edge and the trailing edge. The curved low pressure surface extends between the leading edge and the trailing edge opposite the high pressure surface. The low pressure surface has a bump formed thereon to increase the length of the low pressure surface so that fluid flowing along the low pressure surface is substantially laminar, thereby increasing pump efficiency and pump head.Type: GrantFiled: March 30, 2012Date of Patent: August 18, 2015Assignee: Baker Hughes IncorporatedInventor: Baojun Song
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Patent number: 8568081Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.Type: GrantFiled: April 20, 2010Date of Patent: October 29, 2013Assignee: Baker Hughes IncorporatedInventors: Baojun Song, David Chilcoat
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Publication number: 20130051977Abstract: A pump having an insert between an impeller and diffuser, where the insert includes an annulus that is in communication with fluid flow passages in the impeller and diffuser. The passages and annulus define a fluid flow path through the pump. Vanes are provided in the annulus that can pivot and vary the cross sectional area of the fluid flow path. Regulating the fluid flow path area alters the flow rate where the pump operates at its maximum efficiency. Thus by monitoring flow through the pump, the vanes can be adjusted so the flow rate of maximum efficiency corresponds to the actual flow rate.Type: ApplicationFiled: August 15, 2012Publication date: February 28, 2013Applicant: BAKER HUGHES INCORPORATEDInventors: Baojun Song, David Chilcoat
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Publication number: 20120288385Abstract: An electric submersible pump (ESP) assembly increases pump efficiency and pump head with a diffuser that includes a diffuser vane having a low pressure surface with a length greater than a length of a high pressure surface of the vane. The diffuser vane includes a leading edge at a downstream end of the vane and a trailing edge at an upstream end of the vane. The curved high pressure surface extends between the leading edge and the trailing edge. The curved low pressure surface extends between the leading edge and the trailing edge opposite the high pressure surface. The low pressure surface has a bump formed thereon to increase the length of the low pressure surface so that fluid flowing along the low pressure surface is substantially laminar, thereby increasing pump efficiency and pump head.Type: ApplicationFiled: March 30, 2012Publication date: November 15, 2012Applicant: BAKER HUGHES INCORPORATEDInventor: Baojun Song
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Publication number: 20110255951Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.Type: ApplicationFiled: April 20, 2010Publication date: October 20, 2011Applicant: BAKER HUGHES INCORPORATEDInventors: Baojun Song, David Chilcoat