Oilfield Hydraulic/Michanical Cementing Two Stage Collar (DV collar)

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 Year
• Model NO.: 5", 5 1/2", 7", 9 5/8", 13 3/8", 20"
• Certification: API, ISO
• Power Source: Hydraulic
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Crude Oil
• Structure: Vertical
• Material: Cast Steel
• Model: Mechanical/Hydralic
• Grade: L80, N80
• Thread Connection: Btc, Ltc Stc
• Power Type: Diesel
• Transmission System: Hydraulic
• Transport Package: Wooden Box
• Specification: 5 1/2", 7", 9 5/8", 13 3/8"
• Trademark: zhongshi
• Origin: China
• HS Code: 8413
• Production Capacity: 5000

Product Description

Model DCFZ-A hydraulic stage tool is a special tool used to complete the cementing operation in two times. Mainly used in the following circumstances,
 
1.1. Excessive injection of cement at one shot.
1.2. The formation cannot bear the gigantic fluid pressure. 
1.3. Packoff special strata. 
1.4. Avoid the occurrence of annual air channeling after the cementing job.
1.5. The considerable temperature difference between the upper and lower section makes it rather difficult to adjust the slurry performance.
1.6. Two-stage cementing for deviated and horizontal wells
 

Specification (in)	95/8²(Φ244.5)
Opening Pressure (MPa)	14~16
Closing Pressure (MPa)	5
Sealing Capacity (MPa)	25
Rated Load (t)	238
Connection thread	API 9 5/8² BTC
Max. OD. (mm) ))	282.5
Drill-out ID. (mm)	220.5
Overall Length (mm)	930
Length of first-stage plug (mm)	400
Length of Closing plug (mm)	286