Invention Grant
- Patent Title: Stage tool for wellbore cementing
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Application No.: US14808167Application Date: 2015-07-24
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Publication No.: US09650868B2Publication Date: 2017-05-16
- Inventor: Daniel Jon Themig , Christopher Denis Desranleau , James Fehr
- Applicant: PACKERS PLUS ENERGY SERVICES INC.
- Applicant Address: CA Calgary
- Assignee: Packers Plus Energy Services Inc.
- Current Assignee: Packers Plus Energy Services Inc.
- Current Assignee Address: CA Calgary
- Agency: Sprinkle IP Law Group
- Main IPC: E21B34/14
- IPC: E21B34/14 ; E21B34/00 ; E21B33/14 ; E21B34/10 ; E21B21/10

Abstract:
A stage tool for wellbore annular cementing may be opened for cementing by hydraulic actuation of a sliding sleeve valve from over a fluid port. After sufficient cement has been introduced, the stage tool fluid port can be closed by compressing two telescopically arranged parts of its tubular body to further overlap each other and overlie the fluid port. This permits the stage tool to be closed without employing a plug.
Public/Granted literature
- US20150330189A1 STAGE TOOL FOR WELLBORE CEMENTING Public/Granted day:2015-11-19
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