FLUID CONTROL ASSEMBLIES, AND CORE BARREL AND OVERSHOT ASSEMBLIES COMPRISING SAME
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United States of America Patent
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app pub date -
Jan 29, 2016
filing date -
Jan 30, 2015
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Abstract
Fluid control assemblies including at least one ring. The fluid control assemblies are used within core barrel assemblies to: provide an indication that a core barrel assembly has reached a drilling position and is latched to a drill string; serve as a mechanical shut-off valve that restricts the flow of drilling fluid within a core barrel assembly; and/or serve as a grease seal at the connection between an inner tube cap and an inner tube that receives a core sample.
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