Michanical/Hydraulic Stage Cementing Collar with Plug (DV collar)

• After-sales Service: Yes
• Warranty: 1 Year
• Thread: Btc/Ltc/Stc
• Material: L80/N80
• Model: Michanical/Hydraulic
• Certificate: API
• Model NO.: Hydraulic Stage Cementing Collar
• Size: 9 5/8" 7"
• Transport Package: Wooden Case
• Specification: API
• Trademark: Zhongshi
• Origin: Puyang China
• HS Code: 84314310
• Production Capacity: 50PCS Per Month

Product Description

Stage Cementer features inner-clothing configuration, opening through pressure difference. The closing plug drives the closing sleeve to shut the circulation ports.

Hydraulic Stage Cementing Collar
 
Feature
1.Hydraulic type
2.Top/Closing Plug and First Stage/Flexible Plug
3.Battle Plate/Free Fall Opening Device/Battle Plate
4.Available in sizes 5-1/2" to 13-3/8"
5.API 5CT specification
 
Product Advantage
1. Hydraulic stage collar meets the challenges of cementing holes at any angle with a hydraulically opened port system. 
2. Stage collar designed specifically for horizontal completion.
3. It is specifically used for Primary cementing in deep vertical or high deviated horizontal-well conditions. 
4. It reduces total hydrostatic pressureon weak formations to prevent lost circulation during cementing.
5. Clear surface indications of opening and closing pressures provide safer and more efficient operations. 
6. The opening pressure of the stage collar can be adjusted at rig site to meet well requirements, providing operational flexibility.
 
Technical Parameter

Size, in	5 1/2"	7"	9 5/8"	13 3/8"
Max O.D., mm	Φ170	Φ208	Φ283	Φ381
Drill-out I.D., mm	Φ122	Φ155	Φ220	Φ315
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	Φ85	Φ115	Φ176	Φ203
Upper Sliding Sleeve I.D., mm	Φ95	Φ125	Φ197	Φ285