|
|
| model yfz-a mechanical stage collar |
|
| |
features
-
anti-rotation mechanism protects the closing sleeve from damage while drilling out the opening and closing seats.
-
no fluid trapping while opening and closing the ports.
-
all internal parts are made of easily drillable material.
-
a pump-down opening plug can be used for a continuous two-stage cementing operation.
specifications
|
casing size
|
max o.d.
|
min.i.d.
|
overall length
|
|
in.
|
mm
|
mm
|
mm
|
in.
|
mm
|
in
|
|
7
|
208
|
8.189
|
157
|
6.181
|
1140
|
44.882
|
|
7-5/8
|
230
|
9.055
|
174.2
|
6.858
|
1140
|
44.882
|
|
9-5/8
|
282.5
|
11.122
|
220.5
|
8.681
|
1170
|
46.063
|
|
10-3/4
|
310
|
12.205
|
252
|
9.921
|
1211
|
47.677
|
|
13-3/8
|
384
|
15.118
|
315
|
12.402
|
1211
|
47.677
|
|
|
|
