Wells – Processes – Placing or shifting well part
Reexamination Certificate
2008-11-24
2010-11-30
Bagnell, David J (Department: 3676)
Wells
Processes
Placing or shifting well part
C166S285000
Reexamination Certificate
active
07841417
ABSTRACT:
A method of sealing an annulus formed between a casing string and a surface in a well includes: positioning a seal element in the annulus, a swellable material of the seal element being positioned between the casing string and the surface; and flowing cement through a channel formed between the swellable material and the casing string. A method of sealing in a well includes the steps of: positioning an annular seal element comprising a swellable material in the well; and flowing cement into at least one channel formed longitudinally through the seal element. A method of sealing an annulus between two casing strings includes: providing multiple arcuate segments, each of the segments comprising a swellable material; and installing the segments in the annulus, each of the segments thereby occupying a respective circumferential portion of the annulus.
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Allison David B.
Bozeman Timothy
MacDonald Michael
Sevre Alf K.
Webb Earl
Bagnell David J
Halliburton Energy Service,s Inc.
Michener Blake
Smith Marlin R.
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