Patents by Inventor Brian Walther
Brian Walther 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: 12312913Abstract: A shifting tool for use with an isolation valve. The shifting tool may include a mandrel and a first shifting assembly positioned about the mandrel. The first shifting assembly may include a shifting member engageable with a profile of the isolation valve to shift the isolation valve into at least one of an open position or a closed position, a sleeve engageable with the shifting member to prevent disengagement between the shifting member and the isolation valve, and a detent mechanism engageable with the shifting member to prevent disengagement between the sleeve and the shifting member. The detent mechanism may engage with the shifting member when the shifting tool initially engages with an isolation valve and relative movement of the shifting tool with respect to the isolation valve may disengage the detent mechanism from the shifting member when the detent mechanism reaches predetermined location within isolation valve.Type: GrantFiled: October 21, 2022Date of Patent: May 27, 2025Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: William Ryan Sisak, Bo Chen, Brian Walther
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Patent number: 12297929Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.Type: GrantFiled: July 1, 2024Date of Patent: May 13, 2025Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Bo Chen, Brian Walther
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Patent number: 12276352Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.Type: GrantFiled: August 25, 2023Date of Patent: April 15, 2025Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Bo Chen, Brian Walther, Rannie Dong
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Publication number: 20240425237Abstract: A recyclable woven laminated plastic bag having features that further prevent leakage of contents out of the bag, or infestation of organisms into the contents of the bag is provided. In various aspects the bag can be fabricated from a woven polyethylene, polypropylene, or combination thereof layer which can be laminated using polyethylene, polypropylene, or combination thereof resin with a film layer formed from polyethylene, polypropylene, or combination thereof, can form a sealed corner bag and/or a diagonal sealed bag, and can have one or more sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing.Type: ApplicationFiled: August 16, 2024Publication date: December 26, 2024Inventors: Jacobo Bazbaz, Alberto Zaroli, Vladimir Marin, Brian Walther, Markus Kronigsfeld
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Publication number: 20240417140Abstract: A bag having a front wall, back wall, first side wall, second side wall, top end, and bottom end; where at least one of a first edge of the first side wall and a first edge of the front wall and a first edge of the back wall and a first edge of the second side wall are sealed to form a sealed corner, where the sealed corner is heat sealed; where the bag is adapted to form a cube shape when filled with a filling material and both the top and bottom end of the bag are sealed; and where each of the front, back, first side, and second side wall include (i) a first woven layer including polyethylene, polypropylene, or a combination thereof; and (ii) a second film layer laminated to the first layer, said second layer including polyethylene, polypropylene, or a combination thereof.Type: ApplicationFiled: June 15, 2023Publication date: December 19, 2024Applicant: Polytex Fibers LLCInventors: Jacobo Bazbaz, Alberto Zaroli, Markus Kronigsfeld, Brian Walther
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Publication number: 20240401434Abstract: A shifting tool for use with an isolation valve. The shifting tool may include a mandrel and a first shifting assembly positioned about the mandrel. The first shifting assembly may include a shifting member engageable with a profile of the isolation valve to shift the isolation valve into at least one of an open position or a closed position, a sleeve engageable with the shifting member to prevent disengagement between the shifting member and the isolation valve, and a detent mechanism engageable with the shifting member to prevent disengagement between the sleeve and the shifting member. The detent mechanism may engage with the shifting member when the shifting tool initially engages with an isolation valve and relative movement of the shifting tool with respect to the isolation valve may disengage the detent mechanism from the shifting member when the detent mechanism reaches predetermined location within isolation valve.Type: ApplicationFiled: October 21, 2022Publication date: December 5, 2024Inventors: William Ryan Sisak, Bo Chen, Brian Walther
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Publication number: 20240368968Abstract: A redundant trigger section that actuates a device between operational positions in response to a controlled signal includes a housing including an internal through passage and a plurality of chambers formed in a wall of the housing. a pilot piston disposed within the internal through passage, an actuating piston connected to the pilot piston, and a plurality of triggers connected to the actuating piston. Upon receipt of the controlled signal by a first tubing pressure chamber of the plurality of chambers, at least one trigger of the plurality of triggers activates the actuating piston, which pushes the pilot piston within the internal through passage from an initial position to a final position.Type: ApplicationFiled: March 23, 2022Publication date: November 7, 2024Inventors: Maria Fernanda Tafur, Bo Chen, Yann Dufour, Brian Walther, Brad Swenson, Steven E. Buchanan
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Publication number: 20240353023Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.Type: ApplicationFiled: July 1, 2024Publication date: October 24, 2024Inventors: Bo Chen, Brian Walther
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Patent number: 12025238Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.Type: GrantFiled: February 17, 2021Date of Patent: July 2, 2024Assignee: Schlumberger Technology CorporationInventors: Bo Chen, Brian Walther
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Patent number: 11952864Abstract: An isolation valve includes a ball valve element, an actuation section to rotate the ball valve element, and a trigger section that actuates the actuation section in response to a pressure differential. The actuation section includes an actuation mandrel, a piston housing that at least partially encases the actuation mandrel, a collet piston, and a holding collet. The piston housing and the actuation mandrel define a hydraulic chamber, and the collet piston separates the hydraulic chamber into an upper hydraulic chamber and a lower hydraulic chamber. The holding collet supports the collet piston during a stroke of the actuation mandrel that is triggered by the trigger section. The collet piston is configured to assume a rest position on the actuation mandrel before and during the stroke of the actuation mandrel, and the collet piston is configured to disengage from the actuation mandrel after the stroke of the actuation mandrel.Type: GrantFiled: July 7, 2021Date of Patent: April 9, 2024Assignee: Schlumberger Technology CorporationInventors: Brian Walther, Bo Chen
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Publication number: 20230400118Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.Type: ApplicationFiled: August 25, 2023Publication date: December 14, 2023Inventors: Bo Chen, Brian Walther, Rannie Dong
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Patent number: 11774002Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.Type: GrantFiled: April 19, 2021Date of Patent: October 3, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Bo Chen, Brian Walther, Rannie Dong
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Publication number: 20230279737Abstract: An isolation valve includes a ball valve element, an actuation section to rotate the ball valve element, and a trigger section that actuates the actuation section in response to a pressure differential. The actuation section includes an actuation mandrel, a piston housing that at least partially encases the actuation mandrel, a collet piston, and a holding collet. The piston housing and the actuation mandrel define a hydraulic chamber, and the collet piston separates the hydraulic chamber into an upper hydraulic chamber and a lower hydraulic chamber. The holding collet supports the collet piston during a stroke of the actuation mandrel that is triggered by the trigger section. The collet piston is configured to assume a rest position on the actuation mandrel before and during the stroke of the actuation mandrel, and the collet piston is configured to disengage from the actuation mandrel after the stroke of the actuation mandrel.Type: ApplicationFiled: July 7, 2021Publication date: September 7, 2023Inventors: Brian Walther, Bo Chen
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Patent number: 11739612Abstract: An isolation valve system includes a well string having an isolation valve including a ball rotatably mounted to a pair of inserts for rotation about a fixed axis, an arm coupled to the ball at a position offset from the fixed axis, and a mandrel connected to an actuation end of the arm, the mandrel and the actuation end of the arm being disposed uphole of the ball. Via the actuation end of the arm, the mandrel forces rotation of the ball from a closed position to an open position by moving in a linear direction away from the ball, which allows flow of fluid along a through hole of the ball.Type: GrantFiled: September 16, 2019Date of Patent: August 29, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Cassius Elston, Brian Walther, Venkata Siva Reddy Battula, Ashish Sharma, Diana Orzechowski
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Publication number: 20230213112Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.Type: ApplicationFiled: April 19, 2021Publication date: July 6, 2023Inventors: Bo Chen, Brian Walther, Rannie Dong
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Publication number: 20230041944Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.Type: ApplicationFiled: February 17, 2021Publication date: February 9, 2023Inventors: Bo Chen, Brian Walther, Rannie Dong
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Patent number: 11332602Abstract: The disclosure relates to a tie resin formulation with excellent adhesion to polyethylene terephthalate (PET). The resin includes (A) an ethylene acrylate copolymer formed from ethylene and alkyl acrylate, where the ethylene acrylate copolymer has an acrylate content of 10 to 30 weight percent and an ethylene content of 90 to 70 weight percent based on the total weight of the ethylene acrylate copolymer and the acrylate content and (B) a transesterification catalyst; where the resin includes: 30 to 99.999 weight percent of the ethylene acrylate copolymer based on the total weight of the resin; 0.001 to 10 weight percent of the transesterification catalyst based on the total weight of the resin; and (C) 0 to 69.999 of a non-polar polyolefin based on the total weight of the resin.Type: GrantFiled: March 29, 2018Date of Patent: May 17, 2022Assignee: Dow Global Technologies LLCInventors: Andong Liu, Yunlong Guo, Yong Zheng, Hongyu Chen, Brian Walther, Yi Zhang
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Publication number: 20210388694Abstract: An isolation valve system includes a well string having an isolation valve including a ball rotatably mounted to a pair of inserts for rotation about a fixed axis, an arm coupled to the ball at a position offset from the fixed axis, and a mandrel connected to an actuation end of the arm, the mandrel and the actuation end of the arm being disposed uphole of the ball. Via the actuation end of the arm, the mandrel forces rotation of the ball from a closed position to an open position by moving in a linear direction away from the ball, which allows flow of fluid along a through hole of the ball.Type: ApplicationFiled: September 16, 2019Publication date: December 16, 2021Inventors: Cassius Elston, Brian Walther, Venkata Siva Reddy Battula, Ashish Sharma, Diana Orzechowski
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Publication number: 20210009795Abstract: The disclosure relates to a tie resin formulation with excellent adhesion to polyethylene terephthalate (PET). The resin includes (A) an ethylene acrylate copolymer formed from ethylene and alkyl acrylate, where the ethylene acrylate copolymer has an acrylate content of 10 to 30 weight percent and an ethylene content of 90 to 70 weight percent based on the total weight of the ethylene acrylate copolymer and the acrylate content and (B) a transesterification catalyst; where the resin includes: 30 to 99.999 weight percent of the ethylene acrylate copolymer based on the total weight of the resin; 0.001 to 10 weight percent of the transesterification catalyst based on the total weight of the resin; and (C) 0 to 69.999 of a non-polar polyolefin based on the total weight of the resin.Type: ApplicationFiled: March 29, 2018Publication date: January 14, 2021Applicant: Dow Global Technologies LLCInventors: Andong Liu, Yunlong Guo, Yong Zheng, Hongyu Chen, Brian Walther, Yi Zhang
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Publication number: 20200079883Abstract: A process to form a polymer composition comprising an ethylene-based polymer and a functionalized ethylene-based polymer, said process comprising the steps described herein, which include passing a polymer melt through at least one static mixer, and wherein the functionalized ethylene-based polymer, in melt form, is introduced into the polymer melt, before the polymer melt enters the static mixer.Type: ApplicationFiled: November 11, 2017Publication date: March 12, 2020Inventors: Brian Walther, Santosh S. Bawiskar, Jianping Pan