API 5CT Oilfield Cementing Tools Hydraulic Double Stage Cementing Collar
Hydraulic stage collar meets the challenges of cementing holes at any angle with a hydraulically opened port system.
Stage collar designed specifically for horizontal completion.
It is specifically used for Primary cementing in deep vertical or high deviated horizontal-well conditions.
It reduces total hydrostatic pressureon weak formations to prevent lost circulation during cementing.
Clear surface indications of opening and closing pressures provide safer and more efficient operations.
The opening pressure of the stage collar can be adjusted at rig site to meet well requirements, providing operational flexibility.
The Double Stage Cementing Collar provides an effective, economical way to cement one or more specific casing intervals or to cement upper zone saft era lower zone has been cemented.
The operation of the collar is simple and reliable. It features a double locking mechanism consisting of a snapring lock and ball lock system to assure that the ports are permanently locked closed after cementing is completed. Internal parts are designed to lock to prevent rotation during drill out and are constructed of easily drillable materials.
Parameter of Double Stage Cementing Collar:
Specifications, (in) | 5 1/2" | 7" | 9 5/8" | 13 3/8" |
Max O.D., mm | 170 | 208 | 283 | 381 |
Drill-out I.D., mm | 122 | 155 | 220 | 315 |
Overall Length, mm | 1082 | 1182 | 1222 | 1280 |
Rated Load, t | 140 | 170 | 210 | 300 |
Sealing capacity, MPa | 25 | 25 | 25 | 25 |
Opening Pressure, MPa | 13 | 13 | 13 | 14 |
Closing Pressure, MPa | 5 | 5 | 5 | 5 |
Lower Sliding Sleeve I.D., mm | 85 | 115 | 176 | 203 |
Upper Sliding Sleeve I.D., mm | 95 | 125 | 197 | 285 |


Other products we supply:
1. API 6A Gate Valves - style FC, FLS-R, Wellhead equipment and X'mas tree.
2. API 8A/8C Tubular Handling Tools,
3. Mud pump and Mud pump expendables.
4. API 16C Choke and Kill Manifolds,
5. Drilling hose, hydraulic hose, high pressure union, kill & choke line hose,
6. Spare parts for oilfield equipment which are interchangeable with most of the well-known OEM equipment.