API Top and Bottom Cementing Plug / Non-rotating Cement Plug
API Top and Bottom Cementing Plug / Non-rotating Cement Plug
Structure:
There are two kinds of cementing plug: conventional cementing plug and special cementing plug. Conventional cementing plug is divided into top plug and bottom plug. Special plug has top/middle/bottom plug used in two-stage cementing, drill pipe plug and hollow plug used in drilling liner cementing and composite plug used in composite casing.
1) Types Available: Conventional standard plugs and non-rotating plugs are available;
2) Standard: API
3) API and ISO certified
4) Specifications: 4 1/2''---20''. More special sizes or combination are available as requested.
5) Material: Rubbers and Phenolic Resins.
6) 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.
7) 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.
8) 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.
9) Parameter:
Casing
Size(in) |
Casing Weight Range |
Wiper Fin O.D |
Working
Temperature |
Working
Pressure |
Burst
Pressure |
Hardness |
| mm |
in |
mm |
in |
| 4 1/2" |
14.14-17.26 |
9.50-11.60 |
110 |
4.331 |
-30ºC to
150ºC |
≥15MP |
1MP-2MP |
75-95 |
| 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 |
| 13 3/8" |
71.43-107.15 |
48.00-72.00 |
333 |
13.11 |
-30ºC to
150ºC |
≥10MP |
| 20" |
139.89-197.93 |
94.00-133.00 |
498 |
19.606 |
Feature:
1. Special materials designed for easy drill out with PDC bits
2. Normal and non-rotating type can be available
3. The non-rotating type can save the drilling time
4. Size: 4 1/2"--20".
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