Invention Grant
- Patent Title: Down hole tool with adjustable fluid viscosity
- Patent Title (中): 井下工具具有可调节的流体粘度
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Application No.: US13898079Application Date: 2013-05-20
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Publication No.: US08820398B2Publication Date: 2014-09-02
- Inventor: Arley G. Lee
- Applicant: Smith International, Inc.
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Agency: Osha • Liang LLP
- Main IPC: E21B10/32
- IPC: E21B10/32 ; E21B31/113 ; E21B17/07
Abstract:
A down hole tool includes a tool body, a fluid cavity, a magnetorheological fluid disposed in the fluid cavity, and an electrical control unit in communication with the MR fluid. The electrical control unit is configured to adjust a viscosity of the MR fluid by varying a magnetic field.
Public/Granted literature
- US20130256031A1 DOWN HOLE TOOL WITH ADJUSTABLE FLUID VISCOSITY Public/Granted day:2013-10-03
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