stage collar colar de estágio
| Creator: | |
| Language pair: | angol - portugál |
| Discipline: | Kőolajipar/tudomány |
| Definition / notes: | stage collar {provide a means for cement slurry to be displaced higher in the annulus immediately following the primary cement job. A series of differently sized rubber plugs pumped down inside the casing open and then later close the sliding valves.} |
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