Invention Grant
- Patent Title: Discharge coefficient determination of a managed pressure drilling choke/valve
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Application No.: US14889709Application Date: 2014-05-12
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Publication No.: US10533386B2Publication Date: 2020-01-14
- Inventor: Gary Oddie , Ashley Bernard Johnson
- Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
- Applicant Address: US TX Sugar Land
- Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee Address: US TX Sugar Land
- International Application: PCT/US2014/037744 WO 20140512
- International Announcement: WO2014/183136 WO 20141113
- Main IPC: E21B21/08
- IPC: E21B21/08 ; G01F25/00 ; E21B21/10
Abstract:
A method is provided for determining a discharge coefficient of a managed pressure drilling choke/valve as a function of valve opening position. The method comprises: a flow of air/gas through the choke/valve; measuring a velocity of the air/gas flow at an inlet of the choke/valve; and measuring a pressure drop of the air/gas flow across the choke/valve.
Public/Granted literature
- US20160076322A1 DISCHARGE COEFFICIENT DETERMINATION OF A MANAGED PRESSURE DRILLING CHOKE/VALVE Public/Granted day:2016-03-17
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