Stage Tool
TMOT stage-cementing systems provide cement integrity in wells that require selective zonal isolation. Two-stage cementing techniques are the most common of the multiple-stage cementing techniques, but a three-stage method can be used. They are the tools of choice when drilling requirements call for proven technology and low risk.
Multiple-stage cementing tools are recommended for the following circumstances:
- Wells where the hydrostatic head of the cement is greater than the formation
- pressure in some intervals but no other intervals
- Heavier-weight cement would be required in the high-pressure formation sections
- to maintain control of the well
- When only certain portions of the wellbore require zonal isolation
In downhole conditions that require different slurry blends to address unique challenges to each segment and achieve the intended zonal-isolation integrity
Description
Performance Features
- No welds are used on any portion of the tool
- Robust locking mechanism
- Consistent shifting pressure
- Adjustable shifting pressure
- Externally installed, noninterfering shear pins
- PDC drillable
- Tools can be made from material grades up to 135,000 psi minimum yield, including material
- suitable for sour gas service
- Standard seals rated for °15- to °400+ F and
- suitable for sour service and high pressure gas
Options
- Metal to Metal Seals for high pressures (15,000 psi) and temperatures
- Plug sets are available for three different cementing applications
- Tools can be manufactured with premium connections, special clearance outside diameters and special alloys for any application