Oil Well Cementing Rubber Top/Bottom Plugs for Oilfield

• Certification: ISO 9001:2000
• Surface Treatment: Without Processing
• Centralizer Type: Plug
• Structure: Fins
• Material: Rubber
• Type: Cementing Plug
• Model NO.: 5-1/2
• Raw Material: NBR(Nitrile Rubber Buna)
• Model: Top/Bottom
• Rotating: No
• PDC Drillable: Yes
• Transport Package: Wooden Case
• Specification: 6 5/8
• Trademark: MED
• Origin: China
• Production Capacity: 500/Month

Product Description

oil well cementing  rubber top/bottom  plugs for  oilfield

1) Product Introduction:

Types Available: Conventional standard plugs and non-rotating plugs are available;

Standard: API

Specifications: 4 1/2''---20''. More special sizes or combination are available as requested.

Material: Rubbers and Phenolic Resins.

Conventional and Non Rotating Cementing Plug. We manufactures Cementing Plugs from high-performance special phenolic resin materials. These Cementing Plugs are specially designed with a positive wiping action to ensure that the casing is clean, we have both conventional standard plugs and non-rotating plugs.


Top Plugs:
The top cementing plug is designed to exert continuous pressure on the casing wall. The core is made of special materials such as aluminium or phenolic depending on the application and well conditions. The tapered base fits the cavity of the bottom plug initiating a positive seal. A solid rubber top plug is also available.


Bottom Plugs
Like the Top Cementing Plug, the fins and tail section provide positive wiping action. Fins also serve as a seal while cementing. The core of the bottom plug also made of special materials such as Aluminium or Phenolic depending on the application and well conditions. A rubber diaphragm at the top of bottom plugs ruptures after the plug is seated allowing cement to flow through.

Application

Our cementing plugs are specially designed with a positive wiping action to ensure that the casing is clean.

The top cementing plugs is designed to exert continous pressure on the casing wall.

The fins and tail section of bottom plugs provide positive wiping action. Fins also serve as a seal while cementing. 

 

2) Structure:

The core is made of aluminum or phenolic resins, depending on the application and well conditions.

The plug is made of high performance materials such as rubbers or phenolic resins. 

3) Using Method:

Place bottom plug before injecting cement, and pump the scrape to clean the well-wall. After all is set, build the pressure of 2-4MPa till the rubber diaphragm is broken, and thus circulation is formed. Then inject the cement, place the top plug, pump, set the pressure, and well cementation comes to an end.

 

Casing size(in)	Casing weight range		Wiper Fin O.D
	mm	in	mm	in
4 1/2"	14.14-17.26	9.50-11.60	110	4.331
5"	17.11-35.86	11.50-24.10	122	4.803
5 1/2"	20.83-39.88	14.00-26.80	135	5.315
7"	25.30-56.55	17.00-38.00	170	6.693
7 5/8"	35.72-63.69	24.00-42.00	185	7.283
9 5/8"	53.57-79.62	36.00-53.50	235	9.252
10 3/4"	60.27-97.77	40.50-65.70	260	10.236
13 3/8"	71.43-107.15	48.00-72.00	333	13.110
20"	139.89-197.93	94.00-133.00	498	19.606