Expandable tubular with port valve

Details Expandable tubular with port valve Expandable tubular with port valve

2006-12-26

2006-12-26

Bagnell, David (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S206000, C166S373000

Reexamination Certificate

active

07152687

ABSTRACT:
A ported expandable tubing having an outer valve sleeve which closes the ports upon tubing expansion. An elastomeric sealing member may be carried between the tubing and the valve sleeve to improve closing of the ports. The elastomeric sealing member may be shaped and positioned to operate as a check valve before tubing expansion. Various fluids may be flowed from the ported tubing into a borehole, or from the borehole into the ported tubing, before tubing expansion. After expansion, the ports are closed by residual clamping forces between the sleeve and tubing. By applying sufficient internal pressure to overcome the clamping forces, fluids can be flowed from the tubing into the borehole after expansion.

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patent: 2 366 581 (2002-03-01), None

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