MSC-A Mechanical Stage Tool
The MSC-A Mechanical Stage Tool features inner-closing configuration, 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.
Features:
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With inner-closing structure, the MSC-A stage tool can bring permanent self-locking after closing
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The pressure-relief design prevents fluid trapping and compression between the opening device and the closing plug during the closing phase of the tool’s operation.
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The I.D. of upper/lower sub is the same with that of casing, but smaller than that of closing sleeve, which can minimize chances of damages to the closing sleeve.
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The inner seats are made of an easily drill-able nitrile rubber / aluminum material. Both the opening and closing seats lock against rotation for easy drill-out.
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With pumping-down plug, it’s used in the operation of continuous cementing.
Cementing Equipment 