principle
after the expandable profile pipe is run to planned interval, a ball is dropped and pressure is built to expand the pipe. then, a mechanical tool is run to regulate the pipe id and form a single diameter. finally, the expandable profile pipe expands tightly on the wellbore or casing and isolates the trouble formation or damaged casing.
features
-
achieves equal id to the isolated or patched wellbore.
-
the operation procedure is simple and the tool performance is reliable.
-
can stabilize the wellbore without cementation.
specifications
|
max o.d. before expansion
|
i.d. after expansion
|
expansion rate
|
burst
|
collapse
|
|
mm
|
in.
|
mm
|
in.
|
/
|
mpa
|
psi
|
mpa
|
psi
|
|
194
|
7.638
|
215.9
|
8-1/2
|
20～25%
|
35
|
5,000
|
10
|
1,450
|
|
225
|
8.858
|
241.3
|
9-1/2
|
35
|
5,000
|
8
|
1,150
|
|
250
|
11.417
|
311.15
|
12-1/4
|
30
|
4,350
|
6
|
850
|
|
