Sealed multilateral junction system

Details Sealed multilateral junction system Sealed multilateral junction system

E - Fixed Constructions

21

B

E21B 17/08 (2006.01) E21B 29/06 (2006.01) E21B 41/00 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2425036

A sealed multilateral junction system provides fluid isolation between intersecting wellbores in a subterranean well. In a described embodiment, a method of forming a wellbore junction includes the steps of sealing a tubular string in a branch wellbore to a tubular structure in a parent wellbore. The tubular string may be secured to the tubular structure utilizing a flange which is larger in size than a window formed in the tubular structure. The flange may be sealed to the tubular structure about the window by a metal to metal seal or by adhering the flange to the tubular structure.

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