Step-to-step wedge thread connections and related methods
AssigneeHydril Company
InventorsDavid Llewellyn Mallis, Gary Wayne Ward
Life of this patent
Estimating the term…
Abstract
A threaded connection includes a pin member comprising a first pin step and a second pin step, and pin wedge threads disposed on each of the first and second pin steps and a box member comprising a first box step and a second box step, and box wedge threads disposed on each of the first and second box steps, wherein an axial separation of the first and second pin steps differs from an axial separation of the first and second box steps.
Claims6
A method of making up a threaded connection, the method comprising:
- rotationally engaging a pin member having pin wedge threads with a box member having corresponding box wedge threads, wherein the pin and box wedge threads are formed on corresponding first and second pin and box steps of the pin and box members;
- engaging opposing pin and box stab flanks on the first and second step at different times during makeup of the threaded connection;
- and
- engaging opposing pin and box load flanks on the first and second step at different times during makeup of the threaded connection.
A method of making up a threaded connection, the method comprising:
- rotationally engaging a pin member having pin wedge threads with a box member having corresponding box wedge threads, wherein the pin and box wedge threads are formed on corresponding first and second pin and box steps of the pin and box members;
- engaging corresponding load flanks before stab flanks on the corresponding first pin and box steps;
- and
- engaging corresponding stab flanks before load flanks on the corresponding second pin and box steps.
A method of making up a threaded connection, the method comprising:
- rotationally engaging a pin member having pin wedge threads with a box member having corresponding box wedge threads, wherein the pin and box wedge threads are formed on corresponding first and second pin and box steps of the pin and box members;
- engaging corresponding stab flanks before load flanks on the corresponding first pin and box steps;
- and
- engaging corresponding load flanks before stab flanks on the corresponding second pin and box steps.
Dependencies are inferred from the claim text.