Method and Apparatus for Launching Objects in Dual Gradient Systems
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United States of America Patent
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N/A
Issued Date -
Nov 7, 2013
app pub date -
May 1, 2013
filing date -
May 1, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An apparatus for launching objects, such as during casing cementing operations, in wells having dual gradient fluid systems or certain downhole internal diameter restrictions. A launching assembly is located below a dual gradient valve or other restriction. In one embodiment, control lines extend from the earth's surface to the launching assembly and control actuation of the launching assembly. In an alternative embodiment, a receptacle assembly is positioned above a dual gradient valve or other restriction, with control lines extending from the receptacle assembly to the launching assembly. A dart or other triggering object is launched from the earth's surface to the receptacle assembly in order to control actuation of the launching assembly.
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