Casing Fill and Circulation Tool with Metal Seal Featurel
AssigneeDrawWorks LP
InventorsAlbert Augustus Mullins, Matthew J. Hickl
Life of this patent
Estimating the term…
Abstract
A fill up and circulating tool has a threaded hub covered by a rapidly removable cover. The cover protects the threads from damage until a well kick occurs. When the well kicks the cover is rapidly removed and the fill up tool is brought down with the top drive to which it is connected. The top drive rotates the mandrel of the tool to make the threads up to a coupling on the uppermost stand of casing to provide a metal to metal seal that can resist a well kick coming up through the casing and around the outside of the fill up tool. The top drive system has a surface valve that can be closed quickly to contain the kick through the fill up tool.
Claims15
A fill and circulation tool assembly for running a tubular string to a subterranean location, comprising:
- a mandrel having a passage therethrough and an end connection for support for selective placement in the tubular string;
- a metal seal mounted to said mandrel for selective actuation against an interior wall of the tubular string to retain a pressure surge from the subterranean location.
Dependencies are inferred from the claim text.