Oilfield Hydraulic (Mechanical) Stage Tools / Two Stage Collars

• Certification: API
• Surface Treatment: Spray-Paint
• Centralizer Type: Stage Tool
• Structure: Two Stage Collar
• Material: Cast Steel
• Type: Stage Collar
• Model NO.: Stage collar
• Connection Thread: Btc
• Transport Package: Standard Export Packing
• Specification: 5 1/2" --- 13 3/8"
• Trademark: MED
• Origin: China
• Production Capacity: 10000 PCS/Year

Product Description

Oilfield Hydraulic (Mechanical) Stage Tools  Two Stage Collars
1. Introduction
Stage tool (collar) is a kind of mechanical tool used to complete cementing operation into two times. It mainly consists of two-stage coupling (body), first-stage plug, shut-off baffle, free-fall opening plug and closing plug.

2. Characteristics
1) It adopts out-closing structure and locking device on the closing sleeve. The lock is reliable after closing.
2) The liquid would not occur in the loculum when opening or closing.
3) The I.D. of upper/lower sub should be the same as that of casing, it can protect the body of stage collar from damaging when the bit going down and doing drill-out operation.
4) All the accessories are made of the drillable rubber or aluminum material. They have the function of anti-rotation ,it can make the drill out easy.
5) Pumping-down plug can be used to carry out continuous process.

3. Parameters

Specifications, (in)	5 1/2"	7"	9 5/8"	13 3/8"
Max OD, mm	Φ170	Φ208	Φ283	Φ381
Drill-out ID, 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 ID, mm	Φ85	Φ115	Φ176	Φ203
Upper Sliding Sleeve ID, mm	Φ95	Φ125	Φ197	Φ285