Research Article
Fault Diagnosis Method and Application of ESP Well Based on SPC Rules and Real-Time Data Fusion
Table 5
Weighting factor
of 14 working condition types.
| Working condition type | Fr | MC | MT | V | PIP | POP | PD | PIT | WT | TP | F |
| Normal | 0 | 0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0 | 0.1 | 0.1 | 0.2 | Shaft breakage | 0.1 | 0.05 | 0.2 | 0 | 0.1 | 0.05 | 0.05 | 0.05 | 0.05 | 0.2 | 0.15 | Tubing leakage | 0.1 | 0.15 | 0.1 | 0.1 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.15 | 0.15 | Pump plugging | 0.1 | 0.2 | 0.05 | 0.1 | 0.1 | 0.05 | 0.05 | 0.05 | 0.1 | 0.15 | 0.05 | Perforation plugging | 0.05 | 0.1 | 0.05 | 0.05 | 0.15 | 0.15 | 0.1 | 0.1 | 0.1 | 0.05 | 0.1 | Water-cut rise | 0.05 | 0.2 | 0.05 | 0.05 | 0.05 | 0.15 | 0.05 | 0.1 | 0.05 | 0.1 | 0.15 | Wellhead shut-in | 0 | 0.05 | 0.05 | 0.05 | 0.15 | 0.2 | 0.15 | 0.05 | 0.15 | 0.05 | 0.1 | Reservoir pressure increase | 0.05 | 0.05 | 0.1 | 0.05 | 0.15 | 0.01 | 0.05 | 0.15 | 0.15 | 0.1 | 0.05 | Gas influence | 0.1 | 0.05 | 0.1 | 0.05 | 0.15 | 0.15 | 0.2 | 0.15 | 0 | 0 | 0.05 | Pump wear | 0.1 | 0.2 | 0.1 | 0.1 | 0.05 | 0.05 | 0.05 | 0.1 | 0.15 | 0.05 | 0.05 | Frequency increase | 0.3 | 0.05 | 0.05 | 0.05 | 0.1 | 0.1 | 0.1 | 0.05 | 0 | 0.1 | 0.1 | Choke stab | 0 | 0.05 | 0.05 | 0.05 | 0.2 | 0.15 | 0.2 | 0.05 | 0 | 0.15 | 0.1 | Pump reverse | 0.05 | 0.1 | 0.15 | 0.1 | 0.05 | 0.15 | 0.1 | 0.1 | 0.05 | 0.05 | 0.1 | Tubing plugged | 0 | 0.05 | 0.1 | 0.05 | 0.15 | 0.15 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
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