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Stage collars
Hydraulic stage collars/Mechanical stage collars
1. Mechanical stage collars
The mechanical Stage Cementer features inner-closing struction, in which the circulation ports are opened with free-fall or pumping-down plug. The closing plug drives the closing sleeve to shut the circulation ports.
Technical Parameters
|
Specifications, mm (in) |
Φ139.7 (5-1/2") |
Φ177.8 (7") |
Φ244.5 (9-5/8") |
|
Max O.D., mm |
Φ170 |
Φ208 |
Φ283 |
|
Drill-out I.D., mm |
Φ122 |
Φ155 |
Φ220 |
|
Overall Length, mm |
1082 |
1182 |
1222 |
|
Rated Load, t |
140 |
170 |
210 |
|
Sealing capacity, MPa |
25 |
25 |
25 |
|
Opening Pressure, MPa |
7 |
7 |
7 |
|
Closing Pressure, MPa |
5 |
5 |
5 |
|
Lower Sliding Sleeve I.D., mm |
Φ85 |
Φ115 |
Φ176 |
|
Upper Sliding Sleeve I.D., mm |
Φ95 |
Φ125 |
Φ197 |
2. Hydraulic Stage collars
Hydraulic Stage Cementer features inner closing structure, opening through pressure difference. The closing plug
drives the closing sleeve down and then shut circulation ports.
Technical Parameters:
|
Specifications, (in) |
5 1/2" |
7" |
9 5/8" |
13 3/8" |
|
Max O.D., mm |
Φ170 |
Φ208 |
Φ283 |
Φ381 |
|
Drill-out I.D., mm |
Φ122 |
Φ155 |
Φ220 |
Φ315 |
|
Overall Length, mm |
1082 |
1182 |
1222 |
1280 |
|
Rated Load, t |
140 |
170 |
210 |
300 |
|
Sealing capacity, MPa |
25 |
25 |
25 |
25 |
|
Opening Pressure, MPa |
13 |
13 |
13 |
14 |
|
Closing Pressure, MPa |
5 |
5 |
5 |
5 |
|
Lower Sliding Sleeve I.D., mm |
Φ85 |
Φ115 |
Φ176 |
Φ203 |
|
Upper Sliding Sleeve I.D., mm |
Φ95 |
Φ125 |
Φ197 |
Φ285 |
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