Enables stage cementing operations through use of a mechanically operated port system Applications
Features and Benefits
The Weatherford Eliminator® M Stage Tool Models 751E, 752E, 751PD, and 752PD facilitate stage cementing through use of a mechanically opened port system.
For two-stage cementing operations, the first-stage cement slurry is pumped and displaced. To open the stage tool ports, a free-fall opening cone is dropped, and pressure is applied once the cone reaches the stage tool. The pressure shifts an internal unitary sleeve downward and aligns the ports on the sleeve with ports on the external stage tool body. Flow is then established with the annulus, and the second stage is pumped. A closing plug is pumped down the casing and is bumped on a closing seat. The bumping pressure releases locking lugs, moves the unitary sleeve downward, and closes the stage tool ports.
For three-stage operations, an additional free-fall cone and flexible closing plug are used once the second stage is complete.
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