System for hydraulically expanding a liner hanger
AssigneeEnventure Global Technology, LLC
InventorMatthew Mark Godfrey
Life of this patent
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Abstract
A system includes a seal bushing that is locked into a pup joint, which is part of a liner assembly including an expandable liner hanger. The system also includes an expansion tool that is connected to a drill pipe. The expansion tool includes an expansion cone attached to the slick joint. The slick joint can slide within the bore of the seal bushing. A ball is dropped into the drill pipe and lands on a seat of the expansion tool to increase hydraulic pressure. The ball and the seal bushing can avoid pressurizing an entire liner connected below the pup joint. When the expansion cone moves through the liner hanger at least in part under the effect of pressure, the liner hanger is expanded and anchored to a base casing.
Claims15
A method for setting a liner assembly in a well, the method comprising:
- providing an expansion system comprising:
- a seal bushing including a tubular body, an internal seal, and an external seal;
- an expansion tool including a slick joint having an outer sealing surface that can slide within a through-bore of the seal bushing, and an expansion cone attached to the slick joint, wherein the expansion tool includes a through-bore, a seat provided in the through-bore of the expansion tool, and a lateral port connected to the through-bore of the expansion tool and located in an interval between the expansion cone and the seat;
- and
- wherein the slick joint is received in the through-bore of the seal bushing;
- positioning the expansion cone in an expandable liner hanger;
- connecting a pup joint to the liner hanger, the pup joint having a groove;
- engaging each of a plurality of dogs in the groove;
- connecting the pup joint to a liner;
- expanding the expandable liner hanger in a well;
- and
- retrieving the expansion system from the well.
A system for setting a liner assembly in a well, the system comprising:
- a seal bushing including:
- a tubular body, and
- internal and external seals;
- and
- an expansion tool including:
- a slick joint having an outer sealing surface that can slide within a through-bore of the seal bushing, and
- an expansion cone attached to the slick joint,
- wherein the expansion tool includes a through-bore, a seat provided in the through-bore of the expansion tool, and a lateral port connected to the through-bore of the expansion tool and located in an interval between the expansion cone and the seat;
- wherein the slick joint is received in the through-bore of the seal bushing.
Dependencies are inferred from the claim text.