API Casing Cement Stage Collars for Oilfield

• Customization: Available
• Color: Red
• Spec: 7′′& 9 5/8′′ & 13 3/8′′
• Model NO.: 7" & 9 5/8" & 13 3/8"
• Name: Casing Stage Collar
• Markings: Available
• Sample: Available
• Transport Package: Wood Cases
• Specification: 7′′& 9 5/8′′&13 3/8′′
• Trademark: zhongshi
• Origin: China
• HS Code: 843143100
• Production Capacity: 2000PCS/Month

Product Description

                                            API casing cement stage collars for oilfield


Drill-out free stage cementing collar features inner closing structure,opening through pressure difference.The closing plug drives the closing sleeve down and then shuts circulating ports. 
Features:
1.Opening pressure can be adjusted and it is not subjective to hole angle or mud properties for operation.
2.The pressure-relief design prevents fluid trapping and compression during the closing phase of the tool's operation.
3.The I.D.of upper/lower sub is the same as that of casing ,but smaller than that of closing sleeve,which can minimize chances of damages to the closing sleeve.
4.The inner seats are made of an easily drillable butyronitrile rubber/aluminum material.Both the opening and closing seats lock against rotation for easy drill-out.
 


hydraulic type stage collar
The DCFZ-A hydraulic stage cementing collar features inner closing structure,opening through pressure difference.The closing plug drives the closing sleeve down and then shuts circulating ports  
 

Specification,in	7"
Opening Pressure,MPa	16~18
Opening Acting Force,KN	96~102
Closing Pressure,MPa	5
Closing Acting Force,KN	97
Sealing Capacity,MPa	25
Rated Load,t	180
Connection thread	7" VAM TOP
Max. OD.,mm ))	208
Drill-out ID.,mm	157
Overall Length,mm	1115
Length of first-stage plug,mm	320
Length of Closing plug,mm	280
Length of free-fall opening plug, mm	310

 
 

Features:

1. Opening pressure can be adjusted and it is not subjective to hole angle.

2. The pressure-relief design prevents fluid trapping and compression during the closing phase of the tool's operation.

3. The I.D of upper/lower sub is the same as that of casing, but smaller than that of closing sleeve, which can minimize chances of damages to the closing sleeve.

4. The inner seats are made of an easily drillable butyronitrile rubber / aluminum material. Both the opening and closing seats lock against rotation for easy drill-out.













 

 

Technical Parameters:

Specifications, (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