Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2006-02-07
2008-12-02
Bomar, Shane (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S207000, C166S242800
Reexamination Certificate
active
07458422
ABSTRACT:
A liner is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. After expansion a cement retainer positioned at the bottom of the expanded liner and the sliding sleeve located either above the mounting location of the liner in the casing shoe or in the liner below the mounted top section allow cement to be delivered outside the expanded liner and the displaced wellbore fluid to return into the casing through so that the liner can be cemented. The cement retainer can be delivered with either the liner or the expansion tools to allow expansion and cementing in a single trip. A shifting tool can be run on the expansion string to actuate the sliding sleeve and if necessary to allow for cement to be pumped from the drill string into the annulus through the sliding sleeve. The cement retainer can be milled out in a separate trip.
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Adam Mark K.
Carmody Michael A.
Jabs Mathew J.
Jiral Dennis G.
O'Brien Robert S.
Baker Hughes Incorporated
Bomar Shane
Rosenblatt Steve
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