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US 10,119,361 B2Granted
Window assembly with bypass restrictor
AssigneeHalliburton Energy Services, Inc.
InventorsStuart Alexander Telfer, William Shuan Renshaw
Life of this patent
Estimating the term…
Abstract
In some aspects, a downhole assembly is provided that can include a window joint positioned within a tubular element and a bypass restrictor. The bypass restrictor can be positioned in an annulus between an outer surface of the window joint and an inner surface of the tubular element. The bypass restrictor can restrict the flow of a pressurized fluid via the annulus from a first end to a second end of a wiper plug.
Claims14
A downhole assembly for cementing operations, the assembly comprising:
- a window joint having an opening radially extending through the window joint, the window joint positionable within a tubular element of a casing string;
- and
- a bypass restrictor positionable adjacent to the opening and in an annulus between an outer surface of the window joint and an inner surface of the tubular element, the bypass restrictor operable for restricting a flow of a pressurized fluid via the opening and the annulus from a first end to a second end of a wiper plug,
- wherein the bypass restrictor is fixed relative to the window joint in a downhole environment.
1 more element
A downhole assembly comprising:
- a tubular element;
- a wiper plug having a first end, a second end, and at least one radial wiper conforming to a cross-sectional area of an interior of the tubular element, the wiper operable for pushing cement slurry contacting the second end through the tubular element in response to a pressure communicated to the first end by a pressurized fluid;
- a window joint positioned within the tubular element and having an opening radially extending through the window joint, the radial wiper of the wiper plug conforming to a cross-sectional area bounded by an inner surface of the window joint and an inner surface of the tubular element, the wiper plug further operable for pushing the cement slurry through the window joint;
- and
- a bypass restrictor positioned adjacent to the opening and in an annulus between an outer surface of the window joint and the inner surface of the tubular element, the bypass restrictor operable for reducing an amount of the pressurized fluid flowing from the first end to the second end through the opening and the annulus,
- wherein the bypass restrictor is a material selected from the group consisting of a filler material positioned in the annulus, a layer of grease, a layer of resin, a layer of epoxy, a layer of hardened foam, and a layer of swellable material.
3 more elements
A method comprising:
- running a tubular element into a wellbore, the tubular element containing a window joint positioned within the tubular element and a bypass restrictor positioned in an annulus between an outer surface of the window joint and an inner surface of the tubular element;
- propelling, via a pressurized fluid in contact with a wiper plug, the wiper plug through the tubular element through an inner region between the inner surface of the tubular element and an inner surface of the window joint;
- reducing, via the bypass restrictor, an amount of pressurized fluid bypassing the wiper plug and the inner region via the annulus;
- and
- introducing a setting fluid to the bypass restrictor in the annulus, the setting fluid causing a material in the bypass restrictor to swell for reducing the amount of pressurized fluid bypassing the wiper plug and the inner region via the annulus.
2 more elements
Dependencies are inferred from the claim text.