Research Article
Fault Diagnosis Method and Application of ESP Well Based on SPC Rules and Real-Time Data Fusion
Table 3
Multiparameter fault analysis table of ESP well.
| Working condition type | Fr | MC | MT | V | PIP | POP | PD | PIT | WT | TP | F |
| Normal | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Shaft breakage | 0 | −2 | 1 | 0 | 1 | −1 | −2 | 1 | −1 | −1 | −1 | Tubing leakage | 0 | 0 | 1 | −1 | 1 | −1 | −1 | 1 | −1 | −1 | −1 | Pump plugging | 0 | −1 | 1 | 0 | 1 | −1 | −1 | 1 | 0 | −1 | −1 | Perforation plugging | 0 | −1 | 1 | 0 | −1 | −1 | 1 | 1 | 0 | −1 | −1 | Water-cut rise | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | −1 | −1 | Wellhead shut-in | 0 | −2 | 1 | 0 | 2 | 2 | 2 | 1 | −1 | 2 | −2 | Reservoir pressure increase | 0 | 0 | 0 | 0 | 1 | 1 | −1 | 1 | 1 | 1 | 1 | Gas influence | 0 | −1 | 0 | −1 | 1 | −1 | −1 | 1 | −1 | −1 | −1 | Pump wear | 0 | −1 | 1 | 0 | 1 | −1 | −1 | 1 | 0 | −1 | −1 | Frequency increase | 1 | 2 | 2 | 1 | −2 | 2 | 2 | 1 | 1 | 2 | 2 | Choke stab | 0 | 0 | 0 | 0 | −2 | −2 | −2 | −1 | 0 | −2 | 2 | Pump reverse | −1 | −1 | 1 | 0 | 1 | −1 | −1 | 1 | 0 | −1 | −1 | Tubing plugged | 0 | −1 | 1 | 0 | 1 | 1 | −1 | 1 | −1 | −1 | −1 |
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