Corrosion Reason Analysis of 13Cr110 Tubing in an Injection and Production Well of the Suqiao Gas Storage Group

Figure 5

Surface morphologies of samples before and after the test ((a) before test, (b) gas phase without oxygen, (c) gas phase with oxygen, (d) liquid phase without oxygen, and (e) liquid phase with oxygen).

(a)

(b)

(c)

(d)

(e)