| Share | Phrase |
|---|
| 27.37% | entrap air [perform operation] |
| 14.97% | line [manner] entrap |
| 14.15% | entrap between casing |
| 13.02% | entrap product [perform operation] |
| 12.93% | entrap bubble [perform operation] |
| 8.49% | entrap in oil |
| 5.03% | entrap fluid [perform operation] |
| 3.99% | entrap gas [perform operation] |