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Case Study - 8: Blistering in a Down-hole Tubing |
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| Type of Failure | A down hole tubing of steel coated with epoxy showing blistering in producing wells |
| Material | Stainless Steel 316 |
| Environment | Oil field environment, formation well
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| Observation |
Epoxy coat failure by blistering |
| Reasons |
Pigments in epoxy binder absorb water forming bubbles on the substrate. The bubbles burst and expose the steel substrate.
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| Remedy |
The surface needs to be re coated. Use pigments which are water
repellent. |
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