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US 2010/0147537 A1Published application
Multilateral expandable seal
AssigneeSmith International, Inc.
InventorEuan Docherty
Life of this patent
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Abstract
A system for sealingly engaging multiple downhole tubulars that includes a first downhole tubular comprising an end for receiving a second downhole tubular; a guide assembly disposed on an end of the second tubular; and a swellable seal disposed on an outer surface of the guide assembly, wherein after the first tubular receives the second tubular, the swellable seal is activated to form an expanded circumferential seal between the first tubular and the second tubular is disclosed.
Claims20
A system for sealingly engaging multiple downhole tubulars, comprising:
- a first downhole tubular comprising an end for receiving a second downhole tubular;
- a guide assembly disposed on an end of the second tubular;
- and
- a swellable seal disposed on an outer surface of the guide assembly, wherein after the first tubular receives the second tubular, the swellable seal is activated to form an expanded circumferential seal between the first tubular and the second tubular.
1 more element
A method of sealing tubulars in a wellbore comprising:
- drilling a main wellbore;
- forming a branch wellbore in hydraulic communication with the main wellbore;
- placing a first tubular in the branch wellbore;
- running a second tubular into the main wellbore, wherein the second tubular comprises:
- a guide assembly disposed on a distal end of the second tubular;
- and
- a swellable seal disposed on an outer surface of the guide assembly;
- directing the second tubular toward the first tubular until the guide assembly penetrates the first tubular;
- and
- activating the swellable seal to form a hydraulic seal between the first tubular and the second tubular.
7 more elements
Dependencies are inferred from the claim text.