SHANDONG SAIGAO GROUP CORPORATION
SHANDONG SAIGAO GROUP CORPORATION

MSC-A Mechanical Stage Cementing Collar

MSC-A mechanical stage cementer designed with inner-closing structure, in which the circulation ports are opened with free-fall or pumping-down opening plug. The closing plug drivers the closing sleeve to shut the circulation ports.


Features of MSC-A Mechanical Stage Cementing Collar

1. With inner-closing structure, the stage cementer can bring permanent self-locking after closing.

2. No fluid trapping and compression while opening and closing circulation ports.

3. The I.D.of upper/lower sub is the same as that of casing, but smallerthan that ofclosing sleeve, which can minimize chances of damages to the closing sleeve.

4. The inner parts are made of easily drillable rubber/aluminum material. Both the opening and closing seats have anti-rotation mechanism for easy drillout.

5. With pumping-down opening plug, it is used in the operation of continuous cementing.


Technical Parameters of MSC-A Mechanical Stage Cementing Collar

Specifications, mm (in)

0139.7 (5-1/2 ")

0177.8 (7")

0244.5 (9-5/8')

MaxO.D., mm

0170

d>208

0283

Drill-out I.D., MM

0122

0)155

0220

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,MPs

5

5

5

Lower Sliding Sleeve I.D., mm

085

(P115

0176

Upper Sliding Sleeve I.D., Mm

095

(P125

0197


PRODUCT
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