Dual string tubing hanger
AssigneeBaker International Corporation
InventorTalmadge L. Crowe
Life of this patent
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Abstract
A hanger for supporting dual tubing strings in a well casing from hanger mandrels which can swivel to facilitate threadedly connecting each mandrel to its associated tubing string. The hanger includes an orienting sleeve for receiving safety shut-off valves, the sleeve being adapted to swivel with respect to the rest of the hanger, making it easier to assemble the hanger onto the running and setting tool used for setting the hanger in the casing.
Claims12
A tubing hanger adapted to be lowered in a well casing disposed in a well bore and to support a tubing string depending therefrom, comprising a body structure, supporting means carried by said body structure and engageable with the well casing to support said tubing hanger in the well casing, a tubular mandrel freely swivelly mounted in and supported by said body structure above said supporting means, the upper end of said mandrel terminating within said body structure, said mandrel having connecting means at its lower end adapted for connection to the upper end of a tubing string depending therefrom in response to rotation of said mandrel relative to said body structure and depending tubing string.
A tubing hanger adapted to be lowered in a well casing disposed in a well bore and to support a plurality of tubing strings depending therefrom, comprising a body structure, supporting means carried by said body structure and engageable with the well casing to support said tubing hanger in the well casing, a plurality of tubular mandrels freely swivelly mounted in and supported by said body structure above said supporting means, the upper end of said mandrels terminating within said body structure, each of said mandrels having connected means at its lower end adapted for connection to the upper end of an associated tubing string depending therefrom in response to rotation of the mandrel relative to said body structure and associated tubing string.
Dependencies are inferred from the claim text.