Invention Grant
- Patent Title: Method and apparatus for precise control of wellbore fluid flow
- Patent Title (中): 精确控制井筒流体流动的方法和装置
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Application No.: US12884288Application Date: 2010-09-17
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Publication No.: US08757272B2Publication Date: 2014-06-24
- Inventor: Yawan Couturier , Donald G. Reitsma , Ossama R. Sehsah
- Applicant: Yawan Couturier , Donald G. Reitsma , Ossama R. Sehsah
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Agent Seongyoune Kang; Richard A. Fagin
- Main IPC: E21B34/06
- IPC: E21B34/06
Abstract:
A method for controlling flow of fluid from an annular space in a wellbore includes changing a flow restriction in a fluid flow discharge line from the wellbore annular space. The flow restriction is changed at a rate related to a difference between at least one of a selected fluid flow rate out of the wellbore and an actual fluid flow rate out of the wellbore, and a selected fluid pressure in the annular space and an actual pressure in the annular space.
Public/Granted literature
- US20120067591A1 METHOD AND APPARATUS FOR PRECISE CONTROL OF WELLBORE FLUID FLOW Public/Granted day:2012-03-22
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