stage collars/Hydraulic stage collars/Mechanical stage collars/Stage tools
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 (5½")
|
Φ177.8 (7")
|
Φ244.5 (9?")
|
|
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
|