3 Stage – Mechanical-Hydraulic Stage Collar

Top-Co Products' stage cementing equipment allows for 2 and 3 stage cement jobs.

This reduces breakdown of weak formations due to high hydrostatic pressure from a tall column of cement and allows for effective zonal isolation around lost circulation zones. It also assists in selectively placing cement over specific casing intervals. Stage collars are available in different casing grades, weights, and thread connections.

Making it better

Stage cementing equipment designed for effective cement placement.

The Type 683 - 3-Stage Cementing system is comprised of a lower string Hydraulic stage collar (T690), and an upper string Mechanical stage collar that are run at varied depths in the casing string to allow a 3 stage cementing operation to be carried out. Since the tools are mechanically and Hydraulically opened, this system can only be used where the upper string tool in the well is placed at an inclination <25°.


Boasts a robust locking mechanism

Consistent shifting pressure

Standard tools are furnished with API L-80 material suitable for sour gas service

Tools can be manufactured in various material grades (L-80 to 140ksi materials)

Standard seals rated for -15°F to +400°F and suitable for sour service and high pressure gas environments

PDC Drillable

Plugsets for various different cementing applications available

*Second stage (Hydraulic tool) contingency opening dart is not standard, it must be purchased as optional equipment*

Tools can be manufactured with premium connectionsand special clearance outside diameters


Type 683 - 3-Stage Cementing MECH-HYD Download