Research Article
Study on the Influence of Pulse Current Cathodic Protection Parameters of Oil Well Casing
Table 4
Data difference between cathodic protection potentials in Figure
7 and in Figure
6.
| | | 500 Hz | 1500 Hz | 2500 Hz | 3500 Hz | 4500 Hz | 5500 Hz |
| | Reference electrode 1 mV | −11 | −43 | −15 | −47 | 73 | 60 | | Reference electrode 2 mV | 22 | 41.6 | 71.7 | 75.9 | 52.6 | 8.9 | | Reference electrode 3 mV | 6.5 | −5.8 | 20.7 | 49.4 | 48.2 | 10.6 | | Reference electrode 4 mV | 14.9 | 0.6 | 30.1 | 43.3 | 55.1 | 7.1 |
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