Oilfield Conventional Cementing Rubber Plugs
Non-Rotary Cementing/Wiper Plugs (Polyurethane)
This plug is used to separate the cement slurry from other fluids,
reduce contamination, and maintain predictable slurry
performance and to clean various waste in the wall of the casing.
Two types of cementing plugs are typically used on a cementing
operation. The bottom plug is launched ahead of the cement slurry
to minimize contamination by fluids inside the casing prior to
cementing. A diaphragm in the plug body ruptures under 250~400psi
easily to allow the cement slurry to pass through after the plug
reaches the landing collar. The top plug has a solid body that
provides positive indication of contact with the landing collar and
bottom plug through an increase in pump pressure. This plug is
tested strictly every batch by pressure chambers at different
required pressure and temperature.
Oilfield Conventional Cementing Rubber Plugs Specification
| Inch size | Bore Dia
(mm) | Main body diameter(mm) | MM O.D(mm) | Labial ministry diameter(mm) | Length
(mm) |
|
|
|
| Rubber | Polyurethane | Rubber | Polyurethane | Rubber | Polyurethane |
| 101 | ≥40 | 77~80 | 72~75 | 101~104 | 96~99 | 94~97 | 89~92 | 100~190 |
| 114 | 80~83 | 75~78 | 114~116 | 109~111 | 108~110 | 102~105 |
| 127 | ≥50 | 90~93 | 87~90 | 127~130 | 122~125 | 120~123 | 115~118 | 120~210 |
| 140 | 100~103 | 97~100 | 140~145 | 135~140 | 130~ 135 | 125~130 |
| 178 | ≥70 | 130~135 | 125~130 | 178~183 | 173~175 | 168~173 | 163~168 | 150~240 |
| 194 | 145~150 | 140~145 | 194~201 | 189~196 | 182~189 | 177~184 |
| 219 | 168~173 | 163~168 | 219~223 | 214~218 | 210~214 | 205~209 | 180~260 |
| 244 | 192~197 | 187~192 | 244~249 | 239~243 | 234~239 | 229~234 |
| 273 | 210~214 | 205~209 | 273~279 | 268~273 | 262~268 | 257~263 | 220~300 |
| 298 | 236~243 | 231~238 | 298~305 | 293~297 | 286~293 | 281~288 |
| 340 | 264~272 | 259~267 | 340~348 | 335~343 | 326~334 | 321~329 | 260~350 |
| 508 | ≥100 | 424~435 | 419~430 | 508~519 | 503~514 | 490~501 | 485~496 | 360~450 |
