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| open space between casing and rocks |
| channels and fractures in cement, filling the space between casing and rocks |
| gaps between cement and rocks due to poor cement-rocks bond |
| gaps between cement and casing due to poor cement-casing bond |
fissure network in rocks behind cement |
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| Fig. 1. Example of Behind-Casing Cross-Flow captured by the temperature and noise logs (courtesy of TGT Oilfield Services) |
See Also
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Petroleum Industry / Upstream / Petroleum Well / Downhole cross-flow
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