公开(公告)号：US09989975B2

公开(公告)日：2018-06-05

申请号：US14938074

申请日：2015-11-11

Applicant: Hydril USA Distribution, LLC

Inventor： John S. Holmes ,  James Nolan

IPC: G05D7/00 ,  G05D7/06 ,  G05B15/02 ,  E21B34/16

CPC classification number: G05D7/0676 ,  E21B34/16 ,  G05B15/02

Abstract: Methods and systems for accurately measuring and monitoring accumulated volume of hydraulic fluid in a blowout preventer (BOP) system, specifically for a function of interest, are disclosed. One method includes initializing a state machine algorithm, the state machine algorithm responsive to a BOP function of interest being activated; measuring an initial hydraulic flow rate baseline and an initial pressure baseline to create a hydraulic impedance variable for use in the state machine algorithm; monitoring an aggregate hydraulic flow rate and pressure of the BOP system over time; applying the hydraulic impedance variable to negate BOP system hydraulic flows not related to the BOP function of interest; and applying the state machine algorithm to determine when the BOP function of interest has been completed responsive to a total accumulated volume of hydraulic fluid.

公开(公告)号：US10590726B1

公开(公告)日：2020-03-17

申请号：US16228065

申请日：2018-12-20

Applicant: Hydril USA Distribution LLC

Inventor： Alexander McAuley ,  Aaron Blinka ,  Amine Abou-Assaad ,  David Kindt ,  James Nolan

IPC: E21B33/035 ,  E21B33/038 ,  E21B33/064 ,  E21B41/04 ,  E21B33/06

Abstract: A plurality of PODs for a lower marine riser package (LMRP) is disclosed. At least a first subsea electronics module (SEM) and a second SEM are provided in a first POD of the plurality of PODs. At least a third SEM and a fourth SEM are provided in a second pod. The third SEM is redundant with the first SEM and the fourth SEM is redundant with the second SEM. At least one selector circuit is provided to transmit an SEM select signal that electrically activates or electrically deactivates the first SEM separately from the third SEM. As a result, each of the SEMs in the plurality of PODs may be separately activated or deactivated without a need to turn off fluid provided to hydraulic valves in the first and the second PODs that are controlled by corresponding SEMs.

公开(公告)号：US20160130905A1

公开(公告)日：2016-05-12

申请号：US14938074

申请日：2015-11-11

Applicant: Hydril USA Distribution, LLC

Inventor： John S. Holmes ,  James Nolan

IPC: E21B33/035 ,  G05B15/02 ,  G05D7/06 ,  E21B33/064

CPC classification number: G05D7/0676 ,  E21B34/16 ,  G05B15/02

Abstract: Methods and systems for accurately measuring and monitoring accumulated volume of hydraulic fluid in a blowout preventer (BOP) system, specifically for a function of interest, are disclosed. One method includes initializing a state machine algorithm, the state machine algorithm responsive to a BOP function of interest being activated; measuring an initial hydraulic flow rate baseline and an initial pressure baseline to create a hydraulic impedance variable for use in the state machine algorithm; monitoring an aggregate hydraulic flow rate and pressure of the BOP system over time; applying the hydraulic impedance variable to negate BOP system hydraulic flows not related to the BOP function of interest; and applying the state machine algorithm to determine when the BOP function of interest has been completed responsive to a total accumulated volume of hydraulic fluid.

Abstract translation: 公开了用于精确测量和监测防喷器（BOP）系统中的液压流体的累积体积的方法和系统，具体针对感兴趣的功能。 一种方法包括初始化状态机算法，响应于所激活的BOP功能的状态机算法被激活; 测量初始液压流量基线和初始压力基线，以创建用于状态机算法的液压阻抗变量; 随时间监控BOP系统的总液压流量和压力; 应用液压阻抗变量来否定与所关注的BOP功能无关的BOP系统水力流; 以及应用状态机算法以响应于液压流体的总累积体积来确定感兴趣的BOP功能何时完成。