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US 10,883,334 B2Granted
Multi-segmented plug
AssigneeHalliburton Energy Services, Inc.
InventorsBo Gao, Lonnie C. Helms, David Li
Life of this patent
Estimating the term…
Abstract
A plug for use in a cementing operation in a borehole includes a tail segment and a nose segment separate from the tail segment. The plug also includes a coupler configured to couple the tail segment to the nose segment, in which the tail segment is movable with respect to the nose segment.
Claims17
A plug for use in a cementing operation in a borehole, the plug comprising:
- a tail segment comprising a concave lower portion and a shoulder configured to contact and engage with a downhole component that is separate from the plug;
- a nose segment separate from the tail segment;
- and
- a coupler configured to couple the tail segment to the nose segment, wherein the coupler is movable with respect to at least one of the nose segment and the tail segment, and wherein the tail segment is movable with respect to the nose segment.
1 more element
A system for performing a multi-stage cementing operation in a borehole having a borehole wall, the system comprising:
- a casing string comprising:
- an upper portion;
- a lower portion;
- and
- a stage tool coupled between the upper portion and the lower portion;
- and
- a multi-segmented plug comprising a tail segment movably coupled to a nose segment and configured to land within the stage tool, the tail segment configured to contact and engage with the stage tool.
4 more elements
A method of performing a multi-stage cementing operation in a borehole, the method comprising:
- running a stage tool connected between an upper portion and a lower portion of a casing string;
- landing the casing string at a particular depth within the borehole;
- pumping first stage cement through the casing string and the stage tool and into an annulus between the casing string and a borehole wall;
- moving a sleeve of a packer assembly of the stage tool to set the packer assembly by landing a multi-segmented plug within the stage tool and applying pressure to a tail segment of the multi-segmented plug, the tail segment engaged with a set collar of the packer assembly;
- and
- pumping second stage cement through the upper portion of the casing string and into the annulus through ports within the stage tool.
3 more elements
Dependencies are inferred from the claim text.