Synonym: Behind-Casing Cross-Flow = Channeling
Specific type of Downhole cross-flow occurring behind the casing through:
| Open space between casing and rocks (no cement filling) |
| Channels and fractures in cement, filling the space between casing and rocks |
| Gaps between cement sheath and rocks due to poor cement-rocks bond |
| Gaps between cement sheath and casing due to poor cement-casing bond |
Fissure network in rocks behind cement sheath |
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| Fig. 1. Example of Behind-Casing Cross-Flow captured by the temperature and noise logs (courtesy of TGT) |
See Also
Petroleum Industry / Upstream / Petroleum Well / Well Performance Complications / Downhole cross-flow
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