Tubing string hanger and tensioner assembly
AssigneeRobbins & Myers Energy Systems L.P.
InventorJavier Adolfo Garcia
Life of this patent
Estimating the term…
Abstract
An apparatus for supporting a rotatable tubing string in a well and for tensioning the tubing string includes a tubing head (12) and inner mandrel (34) positioned at least partially within the tubing head and supporting the tubing string. A bushing (32) is supported on the tubing head and engages the inner mandrel, such that the bushing and the inner mandrel rotate together. A tubing rotator (16) is provided for rotating the bushing, with a tubing rotator having a rotator mandrel connected to the bushing. A plurality of circumferentially spaced J-lock mechanisms (56) between the bushing and the inner mandrel are provided for tensioning the tubing string.
Claims21
An apparatus for supporting a rotatable tubing string in a well and tensioning the tubing string, comprising:
- a tubing head positioned at the surface of the well, the tubing head having at least one side port therein;
- inner mandrel positioned at least partially with the tubing head and supporting the tubing string;
- a bushing supported on the tubing head and engaging the mandrel, the bushing and the inner mandrel being rotatable together relative to the tubing head;
- a tubing rotator for rotating the bushing, the tubing rotator having a rotator mandrel rotatably connected to the bushing, and the tubing rotator being removable from the bushing and the tubing head while the bushing supports the tubing string;
- and
- plurality of circumferentially spaced pin-slot mechanisms acting between the bushing and the inner mandrel for maintaining tension in the tubing string.
An apparatus for supporting a rotatable tubing string in a well and tensioning the tubing string, comprising:
- a tubing head positioned at the surface of the well, the tubing head having at least one side port therein;
- inner mandrel positioned at least partially with the tubing head and supporting the tubing string;
- a non-rotatable outer head mandrel supported on the tubing head;
- a bushing supported on the outer head mandrel and engaging the mandrel, the bushing and the inner mandrel being rotatable together relative to the tubing head;
- a tubing rotator for rotating the bushing, the tubing rotator having a rotator mandrel rotatably connected to the bushing, and the tubing rotator being removable from the bushing and the tubing head while the bushing supports the tubing string;
- one or more tensioning mechanisms acting between the bushing and the inner mandrel for maintaining tension in the tubing string.
A method of supporting a rotatable tubing string in a well and tensioning the tubing string, comprising:
- positioning a tubing head at the surface of the well, the tubing head having at least one side port therein;
- positioning an inner mandrel at least partially with the tubing head and supporting the tubing string;
- supporting a bushing supported on the tubing head while engaging the inner mandrel, the bushing and the inner mandrel being rotatable together relative to the tubing head;
- rotating the bushing with a tubing rotator having a rotator mandrel rotatably connected to the bushing, and the tubing rotator being removable from the bushing and the tubing head while the bushing supports the tubing string;
- and
- providing one or more tensioning mechanisms acting between the bushing and the inner mandrel for maintaining tension in the tubing string.
Dependencies are inferred from the claim text.