High torque and high capacity rotatable center core and floatable sealed body assemblies with universal RAM applications and method
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United States of America Patent
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Oct 28, 2003
Grant Date -
N/A
app pub date -
Nov 26, 2001
filing date -
Nov 26, 2001
priority date (Note) -
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Abstract
A high torque and high capacity rotatable center core and floatable sealed body assembly with universal ram applications and method for use in a drill string, including a central core assembly, connected between a swivel on its upper end and the drill string below, having a central passageway therethrough; a first outer assembly, having a central bore for slidably engagement around a portion of the central core assembly; a second outer assembly, having a central bore for slidably engaging around a portion of the central core assembly above the first outer assembly; a pair of opposing transverse bores in both the first and second outer assemblies, corresponding to transverse bores in the central core assembly; sleeve members for aligning the bores of the core assembly and the first and second outer assemblies; and rams positionable in the transverse bores in the first and second outer assemblies for sealing off the passageway in the central core assembly when moved to the sealing position.
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