公开(公告)号：US12297929B2

公开(公告)日：2025-05-13

申请号：US18760634

申请日：2024-07-01

Applicant: Schlumberger Technology Corporation

Inventor： Bo Chen ,  Brian Walther

IPC: F16K31/163 ,  E21B21/10 ,  E21B23/00 ,  E21B34/10 ,  E21B34/14 ,  F15B15/06 ,  F16K17/04 ,  F16K31/122

Abstract: 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.

公开(公告)号：US12025238B2

公开(公告)日：2024-07-02

申请号：US17760114

申请日：2021-02-17

Applicant: Schlumberger Technology Corporation

Inventor： Bo Chen ,  Brian Walther

IPC: F16K31/163 ,  E21B21/10 ,  E21B23/00 ,  E21B34/10 ,  E21B34/14 ,  F15B15/06 ,  F16K17/04 ,  F16K31/122

CPC classification number: F16K31/163 ,  E21B21/10 ,  E21B23/004 ,  E21B34/10 ,  E21B34/103 ,  E21B34/14 ,  F15B15/06 ,  F16K31/122 ,  F16K17/04

Abstract: 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.

公开(公告)号：US20230041944A1

公开(公告)日：2023-02-09

申请号：US17760114

申请日：2021-02-17

Applicant: Schlumberger Technology Corporation

Inventor： Bo Chen ,  Brian Walther ,  Rannie Dong

IPC: F16K31/163 ,  E21B34/14

Abstract: 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.

公开(公告)号：US09658362B2

公开(公告)日：2017-05-23

申请号：US14319520

申请日：2014-06-30

Applicant: Schlumberger Technology Corporation

Inventor： Ramon Hernandez Marti ,  Bo Chen

IPC: G01V13/00 ,  E21B47/01 ,  G01V11/00

CPC classification number: G01V11/002 ,  E21B47/011 ,  G01V13/00 ,  Y10T29/49002

Abstract: The present disclosure introduces pressure-equalized packaging for electronic sensors utilized in conjunction with downhole tools and/or other extreme environments. Such sensors may be operable to detect, sense, and/or measure a parameter, such as may be associated with the downhole tool, or pressurized fluid in which the downhole tool is at least partially submerged, or a subterranean formation adjacent the downhole tool. A housing couples the sensor to a component of the downhole tool. The housing includes an equalizer operable to substantially equalize a first pressure internal to the housing with a second pressure external to the housing.