Top Plug
Product Description
| Free-fall Opening Plug |
1. The shut-off baffle is installed in the casing collar, one joint above the float collar.
1.
| First-Stage Plug |
The first-stage plug is used to isolate the first-stage cement and drilling fluid. On the end of displacement，the first-stage plug lands and effects a seal against the shut-off baffle.
3. Featuring streamline shape and filled with lead, the free-fall opening plug can quickly free-fall to the lower sliding sleeve. When pressure is applied to the casing, it can open the circulation ports.
| Shut-Off Baffle |
4. The closing plug is used to isolate the second-stage cement and drilling fluid. When running to the upper sliding sleeve, it effect a seal in the stage cementer. Pressure is applied to the casing and the circulation ports are closed.
5. The pump-down opening plug is used for continuous cementing operation and in deviated wells. It can open the circulation ports directly and quickly, whereas the free-fall opening plug needs longer time waiting for falling.
| Pumping-Down Opening Plug |
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Technical Data Sheet
| Size of Casing | O. D. | Overall Length | Type |
| (mm/inch) | (mm/inch) | Top~Bottom | |
| | | (mm/inch) | |
| 139.7(5-1/2) | 134(5-9/32) | 250(9-27/32) | Rotary |
| 177.8(7) | 170(6-11/16) | 235/260(9-1/4 \ 10-1/4) | |
| 244.5(9-5/8) | 232(9-1/8) | 274(10-25/32) | Non-Rotary |
| 339.7(13-3/8) | 325(12-51/64) | 355(13-63/64) | |
| When ordering or requesting quotation, if size out of above specification, pls. specify clearly. | |||