Research Article
Corrosion Reason Analysis of 13Cr110 Tubing in an Injection and Production Well of the Suqiao Gas Storage Group
Table 2
Metallographic analysis results of tubing samples.
| | Samples | Nonmetallic inclusion | Metallurgical structure | Grain size | | A | B | C | D | | Thin | Thick | Thin | Thick | Thin | Thick | Thin | Thick |
| | 84# | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 0.5 | 0 | Tempered martensite | Level 9.0 | | 258# | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 0.5 | 0 | Tempered martensite | Level 9.0 | | 259# | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 0.5 | 0 | Tempered martensite | Level 9.0 | | 364# | 0.5 | 0 | 0.5 | 0 | 0 | 0 | 0.5 | 0 | Tempered martensite | Level 9.0 |
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