Dual wiper plug system
AssigneeSmith International, Inc.
InventorsJames HALL, Cem MONUR
Life of this patent
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Abstract
A dual wiper plug system having a first wiper including a first body having a first bore therethrough, and at least one wiper fin disposed around the body, a second wiper disposed axially above the first wiper, the second wiper including a second body having a second bore therethrough and a first shoulder formed on the inner surface of the second body, and at least one wiper fin disposed around the body, and a first collet ring coupled to the first wiper and including at least one collet finger extending axially upward, and a collet head disposed on an upper end of the collet finger and configured to engage the first shoulder of the second body.
Claims30
A dual wiper plug system comprising:
- a first wiper comprising:
- a first body having a first bore therethrough;
- and
- at least one wiper fin disposed around the body;
- a second wiper disposed axially above the first wiper, the second wiper comprising:
- a second body having a second bore therethrough and a first shoulder formed on the inner surface of the second body;
- and
- at least one wiper fin disposed around the body;
- and
- a first collet ring coupled to the first wiper and comprising:
- at least one collet finger extending axially upward;
- and
- a collet head disposed on an upper end of the collet finger and configured to engage the first shoulder of the second body.
A method of using a dual wiper plug system, the method comprising:
- running the dual wiper plug system coupled to a running tool into a well, the dual wiper
- plug system comprising:
- a first wiper coupled to a second wiper with a first collet device;
- and
- a second wiper coupled to the running tool with a second collet device;
- securing the dual wiper plug system proximate an upper end of a liner;
- dropping a first pump down plug into the dual wiper plug system;
- decoupling the first wiper from the second wiper comprising disengaging the first collet device;
- dropping a second pump down plug into the dual wiper plug system;
- and
- decoupling the second wiper from the running tool comprising disengaging the second collet device.
A landing collar comprising:
- a housing;
- a first sleeve configured to receive a lead wiper plug, wherein the first sleeve comprises at least one bypass port;
- and
- at least one latching mechanism configured to couple the first sleeve to an inner wall of the housing,
- wherein the at least one latching mechanism comprises a c-ring coupled to the housing and a landing insert disposed within the c-ring.
Dependencies are inferred from the claim text.