Invention Grant
- Patent Title: System and method for monitoring the state of a choke valve in a managed pressure drilling system
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Application No.: US15756874Application Date: 2016-09-02
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Publication No.: US10895121B2Publication Date: 2021-01-19
- Inventor: Henrik Manum , Qin Li
- Applicant: STATOIL PETROLEUM AS
- Applicant Address: NO Stavanger
- Assignee: STATOIL PETROLEUM AS
- Current Assignee: STATOIL PETROLEUM AS
- Current Assignee Address: NO Stavanger
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: GB1515704.3 20150904
- International Application: PCT/NO2016/050181 WO 20160902
- International Announcement: WO2017/039458 WO 20170309
- Main IPC: E21B21/08
- IPC: E21B21/08 ; E21B21/10 ; F16K37/00 ; G01F1/74 ; G01F15/00 ; G01L13/00 ; G01L19/00 ; G01N9/36
Abstract:
A method of monitoring the state of a choke valve in a managed pressure drilling system using a valve state parameter to represent the state of the choke valve includes measuring the flow rate of a material across the choke valve, measuring the pressure differential of the material across the choke valve, obtaining a valve characteristic of the choke valve, and calculating the valve state parameter using the flow rate, the pressure differential and the valve characteristic.
Public/Granted literature
- US20180266198A1 SYSTEM AND METHOD FOR MONITORING THE STATE OF A CHOKE VALVE IN A MANAGED PRESSURE DRILLING SYSTEM Public/Granted day:2018-09-20
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