Dual stripper assembly for slick cable
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United States of America Patent
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May 21, 2013
Grant Date -
Jan 27, 2011
app pub date -
May 11, 2010
filing date -
Jul 21, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The dual stripper device of the invention has a hollow body formed for coaxial connection to the wellhead which provides for unobstructed passage of a slick cable, such as a data transmitting cable which transmits data in real time to the well surface. Disposed coaxially within the hollow body is a resilient wiper element with an internal bore formed along its longitudinal axis for passage of the slick cable. A hydraulically actuated piston applies a compressive force to the wiper element so that a pressure seal is formed between the wiper element and the cable when the wiper element is sufficiently compressed by the piston. The seal can be maintained during dynamic movement of the slick cable through the wiper element. A mirror image backup wiper assembly can be actuated in the case of failure of the first wiper assembly.
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