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Puyang Zhongshi Group Co., Ltd.

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Province/State:Shaanxi

Country/Region:china

Contact Person:MrsLiza

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API casing cementing accessories manufactures

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Brand Name :ZS

Model Number :5 1/2" to 13 3/8"

Certification :API

Place of Origin :China,Henan

MOQ :1

Price :Negotiable

Payment Terms :T/T

Supply Ability :1000sets/month

Delivery Time :15 work days

Packaging Details :Metal or wooden case

Application :Oilfile Drilling

Material :Alloy steel

Usage :Cementing

Warranty :1 Year

Core Components :Bearing, Pressure vessel

Model :Hydraulic

Processing Type :Forging

COLOR :Customised

Weight(kg) :30

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Casing Stage Collar

The stage collar is a mechanical device utilized for two-stage cementing operations. It primarily comprises a two-stage coupling body, a first-stage plug, a baffle plate, and either a free fall opening plug (for non-continuous processes) or a pump-down opening plug (for continuous processes), along with a closing plug. Its purpose is to facilitate efficient and controlled cementing processes.

1. The closing sleeve of the stage collar is equipped with an out-closing structure and a locking device to ensure secure engagement once closed.
2. The stage collar is designed to prevent the accumulation of liquid in the loculum, a small compartment or chamber, during opening or closing. This prevents any liquid from obstructing or interfering with the proper functioning of the stage collar during operation.
3. It is essential for the inner diameter (i.d.) of the upper and lower sub of the stage collar to match that of the casing in order to protect its body during drill-out operations when the drill bit goes down. This matching i.d. creates a protective barrier, mitigating the risk of potential damage.
4. All accessories of the stage collar, such as drillable rubber or aluminum materials, are designed to be anti-rotational and facilitate easy drill-out processes.
5. The stage collar can be equipped with a pumping-down plug, enabling efficient execution of continuous processes.

PRODUCT SPECIFICATIONS

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