公开(公告)号：US11886206B2

公开(公告)日：2024-01-30

申请号：US17365457

申请日：2021-07-01

Applicant: Hydril USA Distribution LLC

Inventor： Michael James Connor, Jr. ,  Alexander McAuley ,  David Kindt ,  Zachary Stewart

IPC: E21B33/064 ,  G05D16/02 ,  E21B34/16 ,  F16K11/07 ,  F16K31/122 ,  E21B33/06 ,  F16K31/124

CPC classification number: G05D16/02 ,  E21B33/061 ,  E21B33/064 ,  E21B34/16 ,  F16K11/0716 ,  F16K31/1226 ,  F16K31/1245 ,  E21B2200/06

Abstract: A pressure regulator for a BOP stack includes a housing having an input port, an output port, and a pilot port and a regulator piston axially movable through the housing between an open position and a closed position. The regulator piston has an internal passage formed through its first axial end. When the regulator piston is in the open position, the internal passage is in fluid communication with the input and output ports. When the regulator piston is in the closed position, the internal passage is in fluid communication with the output port and fluidly isolated from the input port. A space with regulator fluid is also provided within the housing adjacent a second axial end of the regulator piston, opposite the first axial end, wherein the space is fluidly isolated from the input port and the output port in both the open position and the closed position.

公开(公告)号：US10240618B2

公开(公告)日：2019-03-26

申请号：US15171692

申请日：2016-06-02

Applicant: Hydril USA Distribution LLC

Inventor： Thomas David Beales ,  Michael James Connor, Jr.

IPC: F16D31/02 ,  F15B1/04 ,  F15B1/24 ,  E21B41/00 ,  F15B1/02 ,  F15B15/28 ,  G01F17/00 ,  E21B33/06 ,  E21B33/064

Abstract: A laser piston position sensor for determining the position of a piston within an accumulator, the laser piston position sensor configured to attach to an end of the accumulator, and the accumulator having an aperture in the end thereof exposing the piston within the accumulator to the laser piston position sensor. The laser piston position sensor including a sensor housing enclosing a cavity containing a low pressure gas, and defining an opening from the cavity toward the accumulator, a laser sensor positioned within the cavity for emitting a laser toward the piston of the accumulator via the opening in the sensor housing and the aperture in the accumulator, and a transparent lens positioned between the laser sensor and the accumulator to allow passage of the laser from the laser sensor to the piston, and to separate gases in the accumulator from gases in the cavity of the sensor housing.